// scripts/stack-release.sh (D1, #1659). Design, the T table and the mutants:
// agents/darkwing/work/queue-162/BUILD.md. Every run uses a temp data root, temp units and stand-in
// systemctl, journalctl and systemd-analyze on PATH; nothing here reads ~/.mosaic-dev or a live unit.
import test, {after} from 'node:test';
import assert from 'node:assert/strict';
import {execFileSync,spawn,spawnSync} from 'node:child_process';
import {mkdtempSync,mkdirSync,writeFileSync,readFileSync,appendFileSync,cpSync,rmSync,chmodSync,existsSync,statSync,lstatSync,symlinkSync,linkSync,readdirSync,realpathSync} from 'node:fs';
import {createServer} from 'node:http';
import {createHash} from 'node:crypto';
import {DatabaseSync} from 'node:sqlite';
import {tmpdir} from 'node:os';
import {join,dirname,basename} from 'node:path';
import {fileURLToPath,pathToFileURL} from 'node:url';
import {once} from 'node:events';

const ROOT=fileURLToPath(new URL('../../..',import.meta.url)).replace(/\/$/,'');
const NODE=process.execPath;
const MARKER='# mosaic-cli wrapper (Q81, agents/sage/work/q81/mosaic-cli.sh)';
const BUS='mosaic-bus@acme.service',CON='mosaic-webui.service';
const git=(cwd,...args)=>execFileSync('git',['-c','user.name=fixture','-c','user.email=fixture@invalid','-c','commit.gpgsign=false','-c','core.hooksPath=/dev/null','-C',cwd,...args],{encoding:'utf8'}).trim();
const script=(fn)=>`#!${NODE}\n(${fn})();\n`;

// --- Stand-ins. Each is serialized into its own file, so it uses only process and its own scope. ---

// systemctl --user: unit state in $SD_STATE/units.json, every call in calls.log. A bus start runs
// holder.cjs (the store held open in WAL mode, writer.lock, host.json) and, with --pm in the unit's
// ExecStart, writes the `launched` journal line and the launches entry unless a pm-<copy> fault
// names another case. Faults are files in $SD_STATE/faults named for the copy they hit.
function systemctl(){
 const fs=process.getBuiltinModule('node:fs'),path=process.getBuiltinModule('node:path'),cp=process.getBuiltinModule('node:child_process'),crypto=process.getBuiltinModule('node:crypto');
 const sd=process.env.SD_STATE,data=process.env.SD_DATA,unitDir=path.join(process.env.XDG_CONFIG_HOME,'systemd','user');
 const args=process.argv.slice(2).filter((a)=>a!=='--user'),[verb,...rest]=args;
 fs.appendFileSync(path.join(sd,'calls.log'),args.join(' ')+'\n');
 const faultFile=(n)=>path.join(sd,'faults',n),fault=(n)=>fs.existsSync(faultFile(n));
 const stFile=path.join(sd,'units.json');
 const load=()=>{try{return JSON.parse(fs.readFileSync(stFile,'utf8'))}catch{return {}}};
 const save=(s)=>{fs.writeFileSync(stFile+'.tmp',JSON.stringify(s));fs.renameSync(stFile+'.tmp',stFile)};
 const sleep=(ms)=>Atomics.wait(new Int32Array(new SharedArrayBuffer(4)),0,0,ms);
 const alive=(pid)=>{try{const s=fs.readFileSync(`/proc/${pid}/stat`,'utf8');return s[s.lastIndexOf(')')+2]!=='Z'}catch{return false}};
 const isBus=(u)=>/^mosaic-bus@[a-z0-9-]+\.service$/.test(u),inst=(u)=>u.slice('mosaic-bus@'.length,-'.service'.length);
 const unitFile=(u)=>{
  const main=isBus(u)?'mosaic-bus@.service':u,file=path.join(unitDir,main);
  if(!fs.existsSync(file))return null;
  const drops=[];
  for(const d of isBus(u)?[main+'.d',u+'.d']:[u+'.d']){const dir=path.join(unitDir,d);if(fs.existsSync(dir))for(const f of fs.readdirSync(dir).sort())if(f.endsWith('.conf'))drops.push(path.join(dir,f))}
  const r={wd:'',exec:'',env:[],drops};
  for(const f of [file,...drops])for(let line of fs.readFileSync(f,'utf8').split('\n')){
   line=line.replace(/%i/g,isBus(u)?inst(u):'').replace(/%h/g,process.env.HOME);
   const m=/^(WorkingDirectory|ExecStart|Environment)=(.*)$/.exec(line);if(!m)continue;
   if(m[1]==='WorkingDirectory')r.wd=m[2];else if(m[1]==='ExecStart'){if(m[2])r.exec=m[2]}else r.env.push(m[2]);
  }
  return r;
 };
 const snap=(ev)=>{
  const dir=path.join(data,'bus'),files={};
  try{for(const n of fs.readdirSync(dir).sort()){const p=path.join(dir,n),st=fs.statSync(p);if(st.isFile())files[n]=[st.size,st.mtimeMs,crypto.createHash('sha256').update(fs.readFileSync(p)).digest('hex')]}}catch{}
  fs.appendFileSync(path.join(sd,'snap.jsonl'),JSON.stringify({ev,files})+'\n');
 };
 const pm=(b,id,pid,off)=>{
  let mode='';try{mode=fs.readFileSync(faultFile(`pm-${id}`),'utf8').trim()}catch{}
  const now=Date.now()-off*1000,epoch=Math.floor(now/1000),at=new Date(now).toISOString(),run=`run-${pid}`,unit=`mosaic-bus@${b}.service`;
  const line=(text)=>fs.appendFileSync(path.join(sd,'journal.jsonl'),JSON.stringify({epoch,unit,text})+'\n');
  const ok=()=>line(`launched pm-${b}: run ${run}, claude opus`);
  const lf=path.join(sd,'launches.json');let list=[];try{list=JSON.parse(fs.readFileSync(lf,'utf8'))}catch{}
  const entry=(o)=>list.push({run,business:b,live:true,startedAt:at,...o});
  line(`bus host up: business ${b}, socket /fixture/bus.sock, notifier off`);
  switch(mode){
   case 'none':break;
   case 'two':ok();line(`launched pm-${b}: run ${run}b, claude opus`);entry({});break;
   case 'badword':line(`launched pm-${b}: job ${run}, claude opus`);entry({});break;
   case 'notlisted':ok();break;
   case 'early':ok();entry({startedAt:new Date(now-3600e3).toISOString()});break;
   case 'human':entry({run:`human-${pid}`});break;
   case 'other':ok();entry({business:'other'});break;
   case 'dead':ok();entry({live:false});break;
   default:ok();entry({});
  }
  fs.writeFileSync(lf,JSON.stringify(list));
 };
 if(verb==='show'){
  const u=rest[0],props=[];for(let i=1;i<rest.length;i++)if(rest[i]==='-p')props.push(rest[++i]);
  const f=unitFile(u),st=load()[u]||{},id=f?path.basename(f.wd):'';
  for(const p of props){
   if(p==='LoadState')console.log(`LoadState=${f?'loaded':'not-found'}`);
   else if(p==='WorkingDirectory')console.log(`WorkingDirectory=${f?f.wd+(!isBus(u)&&fault(`check-${id}`)?'-moved':''):''}`);
   else if(p==='ExecStart')console.log(f&&f.exec?`ExecStart={ path=${f.exec.split(' ')[0]} ; argv[]=${f.exec} ; ignore_errors=no ; start_time=[n/a] ; stop_time=[n/a] ; pid=0 ; code=(null) ; status=0/0 }`:'ExecStart=');
   else if(p==='Environment')console.log(`Environment=${f?f.env.join(' '):''}`);
   else if(p==='MainPID')console.log(`MainPID=${st.pid||0}`);
   else if(p==='DropInPaths')console.log(`DropInPaths=${f?f.drops.join(' '):''}`);
  }
  process.exit(0);
 }
 if(verb==='is-active'){
  const q=rest[0]==='--quiet',u=q?rest[1]:rest[0];let s=(load()[u]||{}).state||'inactive';
  // bus-stops-after N (T29): the next N bus checks answer the real state, every later one answers
  // inactive, and units.json stays as it is, as if the bus stopped between two checks.
  if(isBus(u)&&fault('bus-stops-after')){const n=Number(fs.readFileSync(faultFile('bus-stops-after'),'utf8'));if(n>0)fs.writeFileSync(faultFile('bus-stops-after'),String(n-1));else s='inactive'}
  if(!q)console.log(s);process.exit(s==='active'?0:3);
 }
 if(verb==='is-enabled'){console.log('disabled');process.exit(1)}
 if(verb==='daemon-reload')process.exit(0);
 if(verb==='list-units'){
  if(fault('list-fails'))process.exit(1);
  const pats=rest.filter((a)=>!a.startsWith('--')).map((p)=>new RegExp('^'+p.replace(/\./g,'\\.').replace(/\*/g,'.*')+'$'));
  for(const [u,s] of Object.entries(load()))if(pats.some((re)=>re.test(u)))console.log(`${u} loaded ${s.state} ${s.state==='active'?'running':'dead'} fixture`);
  process.exit(0);
 }
 if(verb==='start'){
  const u=rest[0],f=unitFile(u);if(!f){console.error(`Unit ${u} not found.`);process.exit(5)}
  const s=load(),id=path.basename(f.wd);
  if(!isBus(u)){s[u]={state:'active',pid:null,wd:f.wd};save(s);process.exit(0)}
  if(fault(`start-dies-${id}`)){s[u]={state:'failed',pid:null,wd:f.wd};save(s);process.exit(0)}
  // Row 185 (T48): the copy's start writes one event before the holder opens the store, so the
  // store differs from a backup the run took before the start. The close leaves no -wal.
  if(fault(`start-writes-row-${id}`)){
   const db=new (process.getBuiltinModule('node:sqlite').DatabaseSync)(path.join(data,'bus','bus.sqlite'));
   db.prepare('INSERT INTO events (at) VALUES (?)').run('2999-01-01T00:00:00.000Z');db.close();
  }
  snap('start');
  const off=process.env.SD_CLOCK_OFFSET||'0';
  // The holder must not inherit stack-release.sh's lock (fd 9) or any other fd above 2.
  const close='for fd in /proc/self/fd/*; do n=${fd##*/}; [ "$n" -gt 2 ] && eval "exec $n>&-" 2>/dev/null; done; exec "$@"';
  const ch=cp.spawn('bash',['-c',close,'holder',process.execPath,path.join(__dirname,'..','holder.cjs'),data,inst(u),sd,off],{detached:true,stdio:'ignore'});
  ch.unref();
  fs.appendFileSync(path.join(sd,'pids.log'),ch.pid+'\n');
  const ready=path.join(sd,`ready-${ch.pid}`),end=Date.now()+10000;
  while(!fs.existsSync(ready)){if(Date.now()>end){console.error('fixture holder did not start');process.exit(1)}sleep(20)}
  s[u]={state:'active',pid:ch.pid,wd:f.wd};save(s);
  if(f.exec.split(' ').slice(1).includes('--pm'))pm(inst(u),id,ch.pid,Number(off));
  process.exit(0);
 }
 if(verb==='stop'){
  const u=rest[0],s=load(),st=s[u];
  if(st&&st.pid){
   try{process.kill(st.pid,'SIGTERM')}catch{}
   const end=Date.now()+10000;while(alive(st.pid)&&Date.now()<end)sleep(20);
   if(alive(st.pid))try{process.kill(st.pid,'SIGKILL')}catch{}
  }
  if(st){s[u]={...st,state:'inactive',pid:null};save(s)}
  if(isBus(u)){
   // One-shot: the stop leaves an empty -wal or -shm beside the store, as an unclean close would.
   for(const [name,ext] of [['stop-leaves-wal','-wal'],['stop-leaves-shm','-shm']])if(fault(name)){fs.rmSync(faultFile(name));fs.writeFileSync(path.join(data,'bus','bus.sqlite'+ext),'')}
   // One-shot (T45): the stop writes one row after any STAMP into the table the fault names, as a
   // write the bus made between rollback's count and its stop would. The close leaves no -wal.
   if(fault('stop-writes-row')){
    const t=fs.readFileSync(faultFile('stop-writes-row'),'utf8');fs.rmSync(faultFile('stop-writes-row'));
    const db=new (process.getBuiltinModule('node:sqlite').DatabaseSync)(path.join(data,'bus','bus.sqlite'));
    db.exec(`CREATE TABLE IF NOT EXISTS ${t} (seq INTEGER PRIMARY KEY, at TEXT NOT NULL)`);
    db.prepare(`INSERT INTO ${t} (at) VALUES (?)`).run('2999-01-01T00:00:00.000Z');db.close();
   }
   snap('stop');
  }
  process.exit(0);
 }
 console.error(`fixture systemctl: unsupported: ${args.join(' ')}`);process.exit(1);
}

// journalctl --user -u UNIT --since @EPOCH -o cat. A bare local time gets exit 1, as M35 needs.
function journalctl(){
 const fs=process.getBuiltinModule('node:fs'),path=process.getBuiltinModule('node:path');
 const sd=process.env.SD_STATE,a=process.argv.slice(2);let unit='',since='';
 for(let i=0;i<a.length;i++){if(a[i]==='-u')unit=a[++i];else if(a[i]==='--since')since=a[++i]}
 fs.appendFileSync(path.join(sd,'journal-since.log'),since+'\n');
 if(fs.existsSync(path.join(sd,'faults','journal-fails')))process.exit(1);
 let from;
 if(/^@\d+$/.test(since))from=Number(since.slice(1));
 else{const m=/^(\d{4}-\d\d-\d\d) (\d\d:\d\d:\d\d) UTC$/.exec(since);if(!m)process.exit(1);from=Date.parse(`${m[1]}T${m[2]}Z`)/1000}
 let lines=[];try{lines=fs.readFileSync(path.join(sd,'journal.jsonl'),'utf8').split('\n').filter(Boolean).map((l)=>JSON.parse(l))}catch{}
 for(const o of lines)if(o.unit===unit&&o.epoch>=from)console.log(o.text);
}

function systemdAnalyze(){
 const fs=process.getBuiltinModule('node:fs'),path=process.getBuiltinModule('node:path');
 if(process.argv[2]!=='--user'||process.argv[3]!=='unit-paths')process.exit(1);
 console.log(path.join(process.env.XDG_CONFIG_HOME,'systemd','user'));
 // The unit-path fault adds its text as one more path, as T28's relative path needs.
 const extra=path.join(process.env.SD_STATE,'faults','unit-path');
 if(fs.existsSync(extra))console.log(fs.readFileSync(extra,'utf8'));
}

// The bus host: holds the store open in WAL mode until SIGTERM, as the broker does.
function holder(){
 const fs=process.getBuiltinModule('node:fs'),path=process.getBuiltinModule('node:path'),{DatabaseSync}=process.getBuiltinModule('node:sqlite');
 const [data,business,sd,offset]=process.argv.slice(2),bus=path.join(data,'bus');
 fs.mkdirSync(bus,{recursive:true,mode:0o700});
 const db=new DatabaseSync(path.join(bus,'bus.sqlite'));
 if(!db.prepare("SELECT count(*) AS n FROM sqlite_master WHERE name='meta'").get().n){
  db.exec('PRAGMA journal_mode=WAL');
  db.exec('CREATE TABLE meta (key TEXT PRIMARY KEY, value TEXT NOT NULL)');
  db.exec('CREATE TABLE events (id INTEGER PRIMARY KEY, at TEXT NOT NULL)');
  db.prepare("INSERT INTO meta VALUES ('schema_version', '3g')").run();
 }
 fs.writeFileSync(path.join(bus,'writer.lock'),String(process.pid));
 const at=new Date(Date.now()-Number(offset||0)*1000).toISOString(),host=path.join(sd,'host.json');
 fs.writeFileSync(host+'.tmp',JSON.stringify({host:{business,pid:process.pid,live:true,startedAt:at,notifier:'ok'},boot:{ok:true,business,at}}));
 fs.renameSync(host+'.tmp',host);
 process.on('SIGTERM',()=>{db.close();fs.rmSync(path.join(bus,'writer.lock'),{force:true});process.exit(0)});
 fs.writeFileSync(path.join(sd,`ready-${process.pid}`),'');
 setInterval(()=>{},1<<30);
}

// A copy's scripts/mosaic: bus status and launches list from what the holder and systemctl wrote.
function mosaicStub(){
 const fs=process.getBuiltinModule('node:fs'),path=process.getBuiltinModule('node:path');
 const id=path.basename(path.resolve(__dirname,'..')),sd=process.env.SD_STATE,a=process.argv.slice(2).join(' ');
 const fault=(n)=>fs.existsSync(path.join(sd,'faults',n));
 const alive=(pid)=>{try{const s=fs.readFileSync(`/proc/${pid}/stat`,'utf8');return s[s.lastIndexOf(')')+2]!=='Z'}catch{return false}};
 if(a==='bus status --json'){
  if(fault(`status-${id}`))process.exit(1);
  let s={host:null,boot:null};
  try{s=JSON.parse(fs.readFileSync(path.join(sd,'host.json'),'utf8'));s.host.live=alive(s.host.pid)}catch{}
  console.log(JSON.stringify(s));
 }else if(a==='bus status')console.log(`bus: fixture status for ${id}`);
 else if(a==='launches list --json'){
  if(fault(`launches-${id}`))process.exit(1);
  let l=[];try{l=JSON.parse(fs.readFileSync(path.join(sd,'launches.json'),'utf8'))}catch{}
  console.log(JSON.stringify(l));
 }else{console.error(`fixture mosaic: ${a}`);process.exit(4)}
}

// A copy's migrate-schema.mjs: records the backups it saw, then sets 3h, or 3h-partial and exit 1.
function migrateStub(){
 const fs=process.getBuiltinModule('node:fs'),path=process.getBuiltinModule('node:path'),{DatabaseSync}=process.getBuiltinModule('node:sqlite');
 const data=process.argv[2],sd=process.env.SD_STATE,dir=path.join(data,'backups','stack');
 const backups=fs.existsSync(dir)?fs.readdirSync(dir).sort().map((name)=>({name,sums:fs.existsSync(path.join(dir,name,'SHA256SUMS'))})):[];
 fs.writeFileSync(path.join(sd,'migrate.json'),JSON.stringify({backups}));
 const fail=fs.existsSync(path.join(sd,'faults','migrate-fails'));
 const db=new DatabaseSync(path.join(data,'bus','bus.sqlite'));
 db.prepare("UPDATE meta SET value=? WHERE key='schema_version'").run(fail?'3h-partial':'3h');db.close();
 if(fail)process.exit(1);
 console.log('fixture migrate: 3h');
}

// --- The module fixture: one repo, its copies and the stand-ins, shared by every test. ---

const base=realpathSync(mkdtempSync(join(tmpdir(),'stack-release-')));
after(()=>{execFileSync('chmod',['-R','u+w',base]);rmSync(base,{recursive:true,force:true})});
const repo=join(base,'repo'),COPIES=join(base,'copies'),SBIN=join(base,'sbin');
mkdirSync(repo);mkdirSync(COPIES);mkdirSync(SBIN);
writeFileSync(join(base,'package.json'),'{"type":"commonjs"}\n');
const tracked=execFileSync('git',['-C',ROOT,'ls-files','-co','--exclude-standard','--','scripts','packages','adapters','roles','RELEASE','package.json','package-lock.json',':!packages/*/tests',':!scripts/foundation'],{encoding:'utf8'}).trim().split('\n');
for(const f of tracked)if(existsSync(join(ROOT,f)))cpSync(join(ROOT,f),join(repo,f));
const pkg={name:'copy-fixture',version:'1.0.0'};
writeFileSync(join(repo,'package.json'),JSON.stringify(pkg));
writeFileSync(join(repo,'package-lock.json'),JSON.stringify({name:pkg.name,version:pkg.version,lockfileVersion:3,packages:{'':pkg}}));
git(repo,'init','-q','-b','refactor');git(repo,'config','gc.auto','0');git(repo,'add','.');git(repo,'commit','-qm','fixture');
const commit=(msg)=>{git(repo,'commit','-q','--allow-empty','-m',msg);return git(repo,'rev-parse','HEAD')};
// refactor: F A B C1 C, then M merging side branch S (from A). U sits on a branch nothing reaches.
const F=git(repo,'rev-parse','HEAD'),A=commit('row 901: A'),B=commit('row 902: B'),C1=commit('row 903: C1'),C=commit('row 904: C');
git(repo,'checkout','-q','-b','side',A);const S=commit('row 905: S');
git(repo,'checkout','-q','-b','unreached',A);const U=commit('row 906: U');
git(repo,'checkout','-q','refactor');git(repo,'merge','-q','--no-ff','-m','merge side','side');
const M=git(repo,'rev-parse','HEAD');git(repo,'update-ref','refs/remotes/origin/refactor',M);
// `to` false leaves out the `to:` lines (C1); a string puts that value in each one (A). The --plan
// steps line can't be read from either (T27).
const storeText=(v,froms,to=true)=>`export const SCHEMA_VERSION = '${v}';\nexport const MIGRATIONS = [\n${froms.map((f,i)=>`  {\n    from: '${f}',\n${to===false?'':`    to: '${to===true?froms[i+1]??v:to}',\n`}    run() {},\n  },\n`).join('')}];\n`;
// Plug-in kinds (row 169): C1 and C know the harness kind, as a copy at or past c216f47db does. The
// rest have it under another name, as ca15d73e9 has no harness kind. Every copy has the real business
// loader and roles, which the tool imports to read the business file.
const KINDS_NEW=readFileSync(join(repo,'packages','plugins','src','kinds.mjs'),'utf8');
const KINDS_OLD=KINDS_NEW.replace('\n  harness: Object.freeze({','\n  "harness-before-c216f47db": Object.freeze({');
assert.notEqual(KINDS_OLD,KINDS_NEW);
for(const [id,store] of [[F,'// a copy from before SCHEMA_VERSION\n'],[A,storeText('3g',['3f'],'3x')],[B,storeText('3g',['3f'])],[C1,storeText('3g',['3f'],false)],[C,storeText('3h',['3f','3g'])],[S,storeText('3g',['3f'])],[U,storeText('3g',['3f'])]]){
 const d=join(COPIES,id);
 for(const [f,text,mode] of [['scripts/mosaic',script(mosaicStub),0o755],['packages/webui/src/cli.mjs',[B,C1,C].includes(id)?"// fixture Console, never run\n// serve accepts '--tester-port'\n// serve accepts '--proof-header' (row 178)\n":'// fixture Console before tester listener, never run\n',0o644],['packages/bus/src/store.mjs',store,0o644],['packages/bus/src/migrate-schema.mjs',`(${migrateStub})();\n`,0o644],['packages/plugins/src/kinds.mjs',[C1,C].includes(id)?KINDS_NEW:KINDS_OLD,0o644]]){
  mkdirSync(dirname(join(d,f)),{recursive:true});writeFileSync(join(d,f),text,{mode});
 }
 for(const p of ['packages/business/src','roles'])cpSync(join(repo,p),join(d,p),{recursive:true});
 execFileSync('chmod',['-R','a-w',d]);
}
for(const [name,fn] of [['systemctl',systemctl],['journalctl',journalctl],['systemd-analyze',systemdAnalyze]])writeFileSync(join(SBIN,name),script(fn),{mode:0o755});
writeFileSync(join(base,'holder.cjs'),`(${holder})();\n`);
const SR=join(repo,'scripts','stack-release.sh');

// --- Per-test roots and helpers ---

const sha=(f)=>createHash('sha256').update(readFileSync(f)).digest('hex');
const lines=(f)=>existsSync(f)?readFileSync(f,'utf8').split('\n').filter(Boolean):[];
const calls=(e)=>lines(join(e.sd,'calls.log'));
const startsStops=(e,from)=>calls(e).slice(from).filter((c)=>/^(start|stop) /.test(c));
const logLines=(e)=>lines(e.log).map((l)=>JSON.parse(l));
const pointer=(e)=>existsSync(e.pointer)?JSON.parse(readFileSync(e.pointer,'utf8')):null;
const units=(e)=>JSON.parse(readFileSync(join(e.sd,'units.json'),'utf8'));
const snaps=(e)=>lines(join(e.sd,'snap.jsonl')).map((l)=>JSON.parse(l));
const fault=(e,name,text='')=>writeFileSync(join(e.sd,'faults',name),text);
const sysctl=(e,...a)=>execFileSync(join(SBIN,'systemctl'),['--user',...a],{env:e.env,encoding:'utf8'});
const edit=(f,from,to)=>{const s=readFileSync(f,'utf8');assert.ok(s.includes(from),`${f} has no ${from}`);writeFileSync(f,s.replace(from,to))};
const posts=(e)=>readdirSync(e.data).filter((n)=>n.startsWith('bus.post-attempt-'));
const backupSum=(e,act)=>readFileSync(join(e.data,'backups','stack',act,'SHA256SUMS'),'utf8').split(' ')[0];
const commitLines=(range)=>git(repo,'log','--oneline','--no-merges','--max-count=200',range).split('\n').map((l)=>`  ${l}`);
// The units, the wrapper, the pointer and the store, by sha256.
const fp=(e)=>({bus:sha(join(e.units,'mosaic-bus@.service')),console:sha(join(e.units,CON)),wrapper:sha(join(e.bin,'mosaic')),pointer:existsSync(e.pointer)?sha(e.pointer):null,store:sha(e.store)});
// The schema version: readOnly while the holder has the store open, immutable when it is stopped.
function storeVersion(file,held){
 const db=held?new DatabaseSync(file,{readOnly:true}):new DatabaseSync(pathToFileURL(file).href+'?immutable=1',{readOnly:true});
 try{return db.prepare("SELECT value FROM meta WHERE key='schema_version'").get().value}finally{db.close()}
}
// Every file and directory under p with size and mtime: T23 and T16 compare it before and after.
function tree(p){
 const out=[];
 const walk=(q)=>{let st;try{st=statSync(q)}catch{return}out.push(st.isDirectory()?`${q}/`:`${q} ${st.size} ${st.mtimeMs}`);if(st.isDirectory())for(const n of readdirSync(q).sort())walk(join(q,n))};
 walk(p);return out;
}
// T17: what a run may never remove.
const kept=(e)=>[...tree(join(e.data,'backups','stack')),...tree(join(e.state,'stack-rollback')),...posts(e).flatMap((n)=>tree(join(e.data,n))),...tree(COPIES)].map((l)=>l.replace(/ .*/,''));

// The business file (row 169): the committed example made loadable, as acme, with `plugins` when given.
const EXAMPLE=readFileSync(join(repo,'packages','business','examples','mosaic-stack.example.json'),'utf8');
function biz(e,plugins){
 const b=JSON.parse(EXAMPLE);let n=0;
 const walk=(o)=>{for(const [k,v] of Object.entries(o)){if(k==='botId')o[k]=++n;else if(v==='YYYY-MM-DD')o[k]='2027-01-01';else if(v&&typeof v==='object')walk(v)}};
 walk(b);b.id='acme';if(plugins!==undefined)b.plugins=plugins;
 const f=join(dirname(e.cfg),'businesses','acme.json');mkdirSync(dirname(f),{recursive:true});
 writeFileSync(f,JSON.stringify(b,null,2)+'\n',{mode:0o600});chmodSync(f,0o600);
}

async function mk(t){
 const root=realpathSync(mkdtempSync(join(tmpdir(),'sr-')));
 const e={root,data:join(root,'data'),bin:join(root,'bin'),sd:join(root,'sd'),units:join(root,'xcfg','systemd','user'),cfg:join(root,'cfg','config.json'),claude:join(root,'claude-bin','claude')};
 Object.assign(e,{state:join(e.data,'state'),pointer:join(e.data,'state','stack-active.json'),log:join(e.data,'state','stack-activation-log.jsonl'),store:join(e.data,'bus','bus.sqlite'),lock:join(e.data,'state','stack-release.lock')});
 for(const d of [join(root,'home'),dirname(e.cfg),join(e.data,'bus'),e.bin,dirname(e.claude),join(e.sd,'faults'),e.units,join(root,'xdata')])mkdirSync(d,{recursive:true});
 chmodSync(join(e.data,'bus'),0o700);
 writeFileSync(e.cfg,JSON.stringify({configVersion:1,environment:'development',dataRoot:e.data,execution:{backend:'docker',provider:'zai',model:'glm-5.3-flash',adapter:'mock'}}));
 biz(e);
 writeFileSync(join(e.bin,'mosaic'),`#!/usr/bin/env bash\n${MARKER}\n[ "\${1:-}" = __lease-capability ] && exec "${e.bin}/mosaic-old" "$@"\nexec "/old/scripts/mosaic" "$@"\n`,{mode:0o755});
 writeFileSync(join(e.bin,'mosaic-old'),'#!/bin/sh\nexit 0\n',{mode:0o755});
 writeFileSync(e.claude,'#!/bin/sh\necho "9.9.9 (Claude Code fixture)"\n',{mode:0o755});
 e.env={PATH:`${SBIN}:${dirname(NODE)}:/usr/bin:/bin`,HOME:join(root,'home'),XDG_CONFIG_HOME:join(root,'xcfg'),XDG_DATA_HOME:join(root,'xdata'),MOSAIC_CONFIG:e.cfg,SD_STATE:e.sd,SD_DATA:e.data,TMPDIR:tmpdir()};
 // The Console's /healthz: 200 while the stand-in has it active and no healthz-<copy> fault names its copy.
 const server=createServer((q,r)=>{
  let st={};try{st=units(e)[CON]||{}}catch{}
  const ok=q.url==='/healthz'&&st.state==='active'&&!existsSync(join(e.sd,'faults',`healthz-${basename(st.wd||'')}`));
  r.writeHead(ok?200:500);r.end();
 });
 server.listen(0,'127.0.0.1');await once(server,'listening');e.port=String(server.address().port);
 t.after(()=>{
  for(const pid of lines(join(e.sd,'pids.log')).map(Number)){
   try{if(readFileSync(`/proc/${pid}/cmdline`,'utf8').includes(join(base,'holder.cjs')))process.kill(pid,'SIGKILL')}catch{}
  }
  server.close();execFileSync('chmod',['-R','u+w',root]);rmSync(root,{recursive:true,force:true});
 });
 return e;
}

async function run(e,...args){
 const before=existsSync(e.data)?kept(e):[];
 const ch=spawn('bash',[e.sr??SR,...args,'--copies',COPIES,'--bin',e.bin],{env:e.env,stdio:['ignore','pipe','pipe']});
 let out='',err='';ch.stdout.on('data',(d)=>{out+=d});ch.stderr.on('data',(d)=>{err+=d});
 const timer=setTimeout(()=>ch.kill('SIGKILL'),120000);
 const [code]=await once(ch,'close');clearTimeout(timer);
 const now=new Set(kept(e));
 for(const p of before)assert.ok(now.has(p),`T17: ${args.join(' ')} removed ${p}`);
 return {code,out,err};
}

// The stack on copy `copy` for business acme, both units active. pointer: adopt (a real adopt and
// its log line), hand (written here, no log) or none. Snapshots start after the seed.
async function seed(e,{copy=B,pm=false,store='3g',pointer:how='adopt'}={}){
 const db=new DatabaseSync(e.store);
 db.exec('PRAGMA journal_mode=WAL');
 db.exec('CREATE TABLE meta (key TEXT PRIMARY KEY, value TEXT NOT NULL)');
 db.exec('CREATE TABLE events (id INTEGER PRIMARY KEY, at TEXT NOT NULL)');
 db.prepare("INSERT INTO meta VALUES ('schema_version', ?)").run(store);
 for(let i=0;i<3;i++)db.prepare('INSERT INTO events (at) VALUES (?)').run(`2000-01-01T00:00:0${i}.000Z`);
 db.close();
 const sh=(name,...a)=>execFileSync('bash',[join(repo,'scripts',name),...a],{env:e.env,encoding:'utf8',stdio:['ignore','pipe','pipe']});
 sh('bus-service.sh','install','--copy',copy,'--copies',COPIES,...(pm?['--pm']:[]),'--claude',e.claude);
 sh('webui-service.sh','install','--copy',copy,'--copies',COPIES,'--port',e.port,'--business','acme');
 sh('stack-copy.sh','wrapper',copy,'--copies',COPIES,'--bin',e.bin);
 // The seeded host started two minutes ago, so its boot status and PM run predate any run's start.
 execFileSync(join(SBIN,'systemctl'),['--user','start',BUS],{env:{...e.env,SD_CLOCK_OFFSET:'120'}});
 sysctl(e,'start',CON);
 if(how==='adopt'){const r=await run(e,'adopt','acme');assert.equal(r.code,0,r.err)}
 else if(how==='hand'){
  mkdirSync(e.state,{recursive:true});
  writeFileSync(e.pointer,JSON.stringify({copy,business:'acme',pm,claude:e.claude,console:['--port',e.port,'--business','acme'],schema:'3g',activation:'manual',at:'2026-10-18T00:00:00Z'})+'\n');
 }
 writeFileSync(join(e.sd,'snap.jsonl'),'');
}

const rolledBack=(code,to=B)=>`stack-release: ${code}; rolled back to ${to}, which passed the gate\n`;
const planBackup=(e)=>`backup: the run backs up the stopped store to ${e.data}/backups/stack/<activation>/ before any migration`;
const planNoBackup='backup: none; the run rolls back before the backup';
const planTail=(e,to,pm=false)=>[`bus: scripts/bus-service.sh install --copy ${to} --copies ${COPIES}${pm?' --pm':''} --claude ${e.claude}`,'proof: off',`Console: scripts/webui-service.sh install --copy ${to} --copies ${COPIES} --port ${e.port} --business acme`,`CLI: scripts/stack-copy.sh wrapper ${to} --copies ${COPIES} --bin ${e.bin}`];

// --- The T table ---

test('T1 adopt writes the pointer from the units once; a failing check refuses check-failed',async(t)=>{
 const e=await mk(t);await seed(e,{pointer:'none'});
 const r=await run(e,'adopt','acme');assert.equal(r.code,0,r.err);
 assert.equal(r.out,`adopted ${B} for acme (pm 0, schema 3g)\n`);
 const {at,activation,...p}=pointer(e);
 assert.deepEqual(p,{copy:B,business:'acme',pm:false,claude:e.claude,console:['--port',e.port,'--business','acme'],schema:'3g'});
 assert.match(activation,new RegExp(`^\\d{8}T\\d{6}Z-${B.slice(0,12)}$`));assert.match(at,/^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\dZ$/);
 assert.deepEqual(logLines(e).map((l)=>[l.op,l.from,l.to,l.result]),[['adopt',null,B,'ok']]);
 const again=await run(e,'adopt','acme');assert.equal(again.code,3);
 assert.equal(again.err,`stack-release: refusing already-adopted: ${e.pointer} exists (copy ${B})\n`);
 assert.equal(logLines(e).at(-1).code,'already-adopted');
 const f=await mk(t);await seed(f,{pointer:'none'});fault(f,`check-${B}`);
 const bad=await run(f,'adopt','acme');assert.equal(bad.code,3);
 assert.match(bad.err,/^stack-release: refusing check-failed: stack-copy.sh check did not pass:\nbus: /);
 assert.equal(pointer(f),null);
});

test('T2 activate installs exactly the pointer\'s pm, claude and Console flags',async(t)=>{
 const e=await mk(t);await seed(e);
 const r=await run(e,'activate',C1,'acme');assert.equal(r.code,0,r.err+r.out);
 assert.ok(r.out.endsWith(`stack-release: activate ok: ${C1} is live for acme\n`),r.out);
 const bus=readFileSync(join(e.units,'mosaic-bus@.service'),'utf8').split('\n'),con=readFileSync(join(e.units,CON),'utf8').split('\n');
 assert.ok(bus.includes(`ExecStart=${COPIES}/${C1}/scripts/mosaic bus start %i`),bus.join('\n'));
 assert.ok(bus.includes(`Environment=MOSAIC_CLAUDE_BIN=${e.claude}`));
 const exec=con.find((l)=>l.startsWith('ExecStart='));
 assert.ok(exec.endsWith(` ${COPIES}/${C1}/packages/webui/src/cli.mjs serve --checkout ${repo} --port ${e.port} --business acme`),exec);
 assert.equal(readFileSync(join(e.bin,'mosaic'),'utf8').trimEnd().split('\n').at(-1),`exec "${COPIES}/${C1}/scripts/mosaic" "$@"`);
 const {at,activation,...p}=pointer(e);
 assert.deepEqual(p,{copy:C1,business:'acme',pm:false,claude:e.claude,console:['--port',e.port,'--business','acme'],schema:'3g'});
});

test('T3 a hand-edited unit refuses unit-flags-drift, names the difference and changes nothing',async(t)=>{
 const cases=[
  ['pm',(e)=>edit(join(e.units,'mosaic-bus@.service'),' bus start %i\n',' bus start %i --pm\n'),()=>'  pm: pointer 0, unit 1'],
  ['claude',(e)=>{const d=join(e.units,`${BUS}.d`);mkdirSync(d);writeFileSync(join(d,'claude.conf'),'[Service]\nEnvironment=MOSAIC_CLAUDE_BIN=/opt/other/claude\n')},(e)=>`  claude: pointer ${e.claude}, unit /opt/other/claude`],
  ['console',(e)=>edit(join(e.units,CON),'--business acme\n','--business acme --board http://127.0.0.1:9\n'),(e)=>`  console: pointer --port ${e.port} --business acme, unit --port ${e.port} --business acme --board http://127.0.0.1:9`],
 ];
 for(const [name,change,line] of cases)await t.test(name,async(t)=>{
  const e=await mk(t);await seed(e);change(e);
  const before=fp(e),n=calls(e).length,logs=logLines(e).length;
  const r=await run(e,'activate',C1,'acme');assert.equal(r.code,3);
  assert.equal(r.err,`stack-release: refusing unit-flags-drift: the units differ from the pointer; settle it first:\n${line(e)}\n`);
  assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);
  assert.equal(logLines(e).length,logs+1);assert.equal(logLines(e).at(-1).code,'unit-flags-drift');
 });
});

test('T4 each item 3 refusal changes nothing and logs one line with its code',async(t)=>{
 const setUnit=(e,u,state)=>{const s=units(e);s[u]={...(s[u]||{pid:null,wd:''}),state};writeFileSync(join(e.sd,'units.json'),JSON.stringify(s))};
 const cases=[
  ['copy-missing',()=>M,()=>`no copy ${M} in ${COPIES}`],
  ['copy-unreachable',()=>U,()=>`${U} is not reachable from refactor and origin/refactor`],
  ['copy-schema-unknown',()=>F,()=>`cannot read SCHEMA_VERSION and its chain from ${COPIES}/${F}/packages/bus/src/store.mjs`],
  ['already-active',()=>B,()=>`${B} is the pointer's copy`],
  ['instance-busy',(e)=>{setUnit(e,'mosaic-bus@other.service','active');return C1},()=>'mosaic-bus@other.service is active; the copy and wrapper switch reach it too','another business active'],
  ['instance-busy',(e)=>{setUnit(e,BUS,'activating');return C1},()=>`${BUS} is activating`,'this business activating'],
  ['drop-in-override',(e)=>{const d=join(e.units,`${BUS}.d`);mkdirSync(d);writeFileSync(join(d,'override.conf'),'[Service]\nWorkingDirectory=/elsewhere\n');return C1},(e)=>`${join(e.units,`${BUS}.d`,'override.conf')} overrides ExecStart or WorkingDirectory; the operator removes it as in TOOLS.md step 4`],
  ['no-pointer',()=>C1,(e)=>`no ${e.pointer}; run adopt first`,'',{pointer:'none'}],
 ];
 for(const [code,setup,msg,label,opts] of cases)await t.test(label?`${code} (${label})`:code,async(t)=>{
  const e=await mk(t);await seed(e,opts);const id=setup(e);
  const before=fp(e),n=calls(e).length,logs=logLines(e).length;
  const r=await run(e,'activate',id,'acme');assert.equal(r.code,3,r.err);
  assert.equal(r.err,`stack-release: refusing ${code}: ${msg(e)}\n`);
  assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);
  assert.equal(logLines(e).length,logs+1);assert.deepEqual([logLines(e).at(-1).result,logLines(e).at(-1).code],['refused',code]);
 });
});

test('T5 an activate with no migration stops the Console then the bus, installs, starts the bus then the Console',async(t)=>{
 const e=await mk(t);await seed(e);const n=calls(e).length;
 const r=await run(e,'activate',C1,'acme');assert.equal(r.code,0,r.err);
 assert.deepEqual(startsStops(e,n),[`stop ${CON}`,`stop ${BUS}`,`start ${BUS}`,`start ${CON}`]);
 const c=calls(e).slice(n),reload=c.indexOf('daemon-reload');
 assert.ok(reload>c.indexOf(`stop ${BUS}`)&&reload<c.indexOf(`start ${BUS}`),'daemon-reload between the stops and the starts');
 assert.equal(pointer(e).copy,C1);assert.equal(units(e)[BUS].wd,join(COPIES,C1));
 // Row 185: a same-schema activate backs up the stopped store too (T47 checks the backup).
 assert.deepEqual(readdirSync(join(e.data,'backups','stack')),[pointer(e).activation]);
 const l=logLines(e).slice(-2);assert.deepEqual(l.map((x)=>[x.op,x.from,x.to,x.result]),[['activate',B,C1,'started'],['activate',B,C1,'ok']]);
});

test('T6 a migration without --migrate rolls back with migration-needs-flag',async(t)=>{
 const e=await mk(t);await seed(e);const before=fp(e);
 const r=await run(e,'activate',C,'acme','--timeout','3');assert.equal(r.code,1,r.out);
 assert.equal(r.err,rolledBack('migration-needs-flag'));
 assert.deepEqual(fp(e),before);
 assert.deepEqual([units(e)[BUS].state,units(e)[BUS].wd,units(e)[CON].state],['active',join(COPIES,B),'active']);
 const l=logLines(e).at(-1);assert.deepEqual([l.result,l.code,l.rollback],['gate-failed','migration-needs-flag','ok']);
 assert.equal(storeVersion(e.store,true),'3g');assert.ok(!existsSync(join(e.data,'backups','stack')));
});

test('T7 --migrate takes the backup before the migration runs',async(t)=>{
 const e=await mk(t);await seed(e);const before=fp(e);
 const r=await run(e,'activate',C,'acme','--migrate');assert.equal(r.code,0,r.err+r.out);
 const act=pointer(e).activation;
 assert.deepEqual(JSON.parse(readFileSync(join(e.sd,'migrate.json'),'utf8')),{backups:[{name:act,sums:true}]});
 assert.equal(backupSum(e,act),before.store);
 assert.deepEqual([pointer(e).copy,pointer(e).schema],[C,'3h']);assert.equal(storeVersion(e.store,true),'3h');
 assert.equal(logLines(e).at(-1).backup,act);
});

test('T8 a failed migration restores the backup and keeps the store it replaced',async(t)=>{
 const e=await mk(t);await seed(e);const before=fp(e);fault(e,'migrate-fails');
 const r=await run(e,'activate',C,'acme','--migrate','--timeout','3');assert.equal(r.code,1,r.out);
 assert.equal(r.err,rolledBack('migrate-failed'));
 assert.equal(posts(e).length,1);assert.equal(storeVersion(join(e.data,posts(e)[0],'bus.sqlite'),false),'3h-partial');
 const act=logLines(e).at(-1).activation;
 assert.equal(sha(e.store),backupSum(e,act));assert.equal(sha(e.store),before.store);
 assert.deepEqual(fp(e),before);assert.equal(units(e)[BUS].wd,join(COPIES,B));
});

test('T9 a store outside the target\'s chain rolls back with store-newer',async(t)=>{
 const e=await mk(t);await seed(e,{store:'3z'});const before=fp(e);
 const r=await run(e,'activate',C,'acme','--migrate','--timeout','3');assert.equal(r.code,1,r.out);
 assert.equal(r.err,rolledBack('store-newer'));
 assert.deepEqual(fp(e),before);assert.equal(storeVersion(e.store,true),'3z');assert.ok(!existsSync(join(e.data,'backups','stack')));
});

test('T10 each gate check failing alone rolls back and puts every file back',async(t)=>{
 const cases=[['units-inactive',`start-dies-${C1}`],['bus-status',`status-${C1}`],['healthz',`healthz-${C1}`],['copy-check',`check-${C1}`],['pm-launch-unconfirmed',`pm-${C1}`,'none']];
 for(const [code,name,text] of cases)await t.test(code,async(t)=>{
  const pm=code==='pm-launch-unconfirmed',e=await mk(t);await seed(e,{pm});fault(e,name,text);
  const before=fp(e);
  const r=await run(e,'activate',C1,'acme',...(pm?['--pm']:[]),'--timeout','3');assert.equal(r.code,1,r.out+r.err);
  assert.equal(r.err,rolledBack(code));assert.ok(r.out.includes(`stack-release: gate failed on ${C1}: ${code}`),r.out);
  assert.deepEqual(fp(e),before);
  assert.deepEqual([units(e)[BUS].state,units(e)[BUS].wd],['active',join(COPIES,B)]);
  const l=logLines(e).at(-1);assert.deepEqual([l.result,l.code,l.rollback],['gate-failed',code,'ok']);
 });
});

test('T10b the PM check needs exactly one launched line for a live run of this start',async(t)=>{
 const cases=[
  ['no launched line','none',/\(no launched line since the start\)/],
  ['two lines','two',/\(2 launched lines since the start\)/],
  ['a changed word','badword',/\(the launched line does not parse: launched pm-acme: job run-\d+, claude opus\)/],
  ['run not in launches list','notlisted',/\(run run-\d+ is not in launches list\)/],
  ['run started before the start','early',/\(run run-\d+ started before this start\)/],
  ['a human launch with no journal line','human',/\(no launched line since the start\)/],
  ['run for another business','other',/\(run run-\d+ is for other\)/],
  ['run not live','dead',/\(run run-\d+ is not live\)/],
 ];
 for(const [name,mode,why] of cases)await t.test(name,async(t)=>{
  const e=await mk(t);await seed(e,{pm:true});fault(e,`pm-${C1}`,mode);
  const r=await run(e,'activate',C1,'acme','--pm','--timeout','3');assert.equal(r.code,1,r.out+r.err);
  assert.equal(r.err,rolledBack('pm-launch-unconfirmed'));
  const gate=r.out.split('\n').find((l)=>l.startsWith(`stack-release: gate failed on ${C1}: pm-launch-unconfirmed`));
  assert.ok(gate,r.out);assert.match(gate,why);
 });
 await t.test('one well-formed line and a live run pass',async(t)=>{
  const e=await mk(t);await seed(e,{pm:true});
  const r=await run(e,'activate',C1,'acme','--pm');assert.equal(r.code,0,r.out+r.err);
  assert.ok(readFileSync(join(e.units,'mosaic-bus@.service'),'utf8').includes(`ExecStart=${COPIES}/${C1}/scripts/mosaic bus start %i --pm\n`));
  assert.match(lines(join(e.sd,'journal-since.log')).at(-1),/^@\d+$/);
  assert.equal(pointer(e).pm,true);
 });
});

test('T11 a rollback whose gate fails too: rollback-failed, exit 2, both units stopped, no retry',async(t)=>{
 const e=await mk(t);await seed(e);fault(e,`healthz-${C1}`);fault(e,`healthz-${B}`);const n=calls(e).length;
 const r=await run(e,'activate',C1,'acme','--timeout','3');assert.equal(r.code,2,r.out+r.err);
 const l=logLines(e).at(-1),rs=join(e.state,'stack-rollback',l.activation);
 assert.equal(r.err,`stack-release: rollback-failed: the run failed with healthz and the rollback with healthz; both units are stopped. Rollback set: ${rs}, backup ${join(e.data,'backups','stack',l.activation)}\n`);
 assert.deepEqual([l.result,l.code,l.rollback,l.rollbackCode],['rollback-failed','healthz','failed','healthz']);
 // Row 185: the same-schema backup is named and was not restored, so no post-attempt store.
 assert.equal(l.backup,l.activation);assert.equal(posts(e).length,0);
 assert.deepEqual([units(e)[BUS].state,units(e)[CON].state],['inactive','inactive']);
 const ss=startsStops(e,n);
 assert.deepEqual(ss.filter((c)=>c.startsWith('start ')),[`start ${BUS}`,`start ${CON}`,`start ${BUS}`,`start ${CON}`]);
 assert.deepEqual(ss.slice(-2),[`stop ${CON}`,`stop ${BUS}`]);
 assert.equal(pointer(e).copy,B);
});

test('T12 rollback takes the previous copy from the log',async(t)=>{
 const e=await mk(t);await seed(e);
 assert.equal((await run(e,'activate',C1,'acme')).code,0);
 const r=await run(e,'rollback','acme');assert.equal(r.code,0,r.out+r.err);
 assert.ok(r.out.endsWith(`stack-release: rollback ok: ${B} is live for acme\n`),r.out);
 assert.equal(pointer(e).copy,B);
 const l=logLines(e).at(-1);assert.deepEqual([l.op,l.from,l.to,l.result],['rollback',C1,B,'ok']);
});

test('T13 a rollback across a migration needs --restore, then restores and goes live',async(t)=>{
 const e=await mk(t);await seed(e);
 assert.equal((await run(e,'activate',C,'acme','--migrate')).code,0);const act=pointer(e).activation,storeC=sha(e.store);
 const no=await run(e,'rollback','acme');assert.equal(no.code,3);
 assert.equal(no.err,`stack-release: refusing schema-differs: the store is at 3h and ${B} expects 3g; pass --restore ACTIVATION\n`);
 const r=await run(e,'rollback','acme','--restore',act);assert.equal(r.code,0,r.out+r.err);
 const o=join(e.data,'backups','stack',act);
 assert.match(r.out,new RegExp(`^restore: ${o}; the store now in place moves to ${e.data}/bus\\.post-attempt-\\d{8}T\\d{6}Z and is kept; 0 event\\(s\\) were written after the backup\\n`));
 assert.deepEqual([pointer(e).copy,pointer(e).schema],[B,'3g']);assert.equal(storeVersion(e.store,true),'3g');
 assert.equal(sha(e.store),backupSum(e,act));
 assert.equal(posts(e).length,1);assert.equal(sha(join(e.data,posts(e)[0],'bus.sqlite')),storeC);
 assert.equal(logLines(e).at(-1).backup,act);
});

test('T14 events written after the backup need --events N with the right N',async(t)=>{
 const e=await mk(t);await seed(e);
 assert.equal((await run(e,'activate',C,'acme','--migrate')).code,0);const act=pointer(e).activation;
 const db=new DatabaseSync(e.store);for(let i=0;i<2;i++)db.prepare('INSERT INTO events (at) VALUES (?)').run('2999-01-01T00:00:00.000Z');db.close();
 const want='stack-release: refusing post-backup-events: 2 event(s) were written after the backup; Jason decides, then --events 2\n';
 for(const extra of [[],['--events','1']]){
  const before=fp(e),r=await run(e,'rollback','acme','--restore',act,...extra);
  assert.equal(r.code,3,extra.join(' '));assert.equal(r.err,want);assert.deepEqual(fp(e),before);
 }
 const r=await run(e,'rollback','acme','--restore',act,'--events','2');assert.equal(r.code,0,r.out+r.err);
 assert.match(r.out,/; 2 event\(s\) were written after the backup\n/);
 assert.deepEqual([pointer(e).copy,pointer(e).schema],[B,'3g']);
});

test('T14b a rollback --restore whose gate fails stops both units and skips item 6',async(t)=>{
 const e=await mk(t);await seed(e);
 assert.equal((await run(e,'activate',C,'acme','--migrate')).code,0);const act=pointer(e).activation,storeC=sha(e.store),before=fp(e);
 fault(e,`healthz-${B}`);const n=calls(e).length;
 const r=await run(e,'rollback','acme','--restore',act,'--timeout','3');assert.equal(r.code,2,r.out+r.err);
 const l=logLines(e).at(-1),rs=join(e.state,'stack-rollback',l.activation),post=join(e.data,posts(e)[0]);
 assert.equal(r.err,`stack-release: rollback-failed: the run failed with healthz and the rollback with not-attempted; both units are stopped. Rollback set: ${rs}, backup ${join(e.data,'backups','stack',act)}, post-attempt store ${post}\n`);
 assert.deepEqual([l.result,l.code,l.rollbackCode],['rollback-failed','healthz','not-attempted']);
 assert.deepEqual([units(e)[BUS].state,units(e)[CON].state],['inactive','inactive']);
 assert.equal(posts(e).length,1);assert.equal(sha(join(post,'bus.sqlite')),storeC);assert.equal(sha(e.store),backupSum(e,act));
 assert.deepEqual(startsStops(e,n).filter((c)=>c.startsWith('start ')),[`start ${BUS}`,`start ${CON}`]);
 assert.equal(pointer(e).copy,C);assert.equal(sha(e.pointer),before.pointer);
});

test('T14c a rollback without --restore whose gate fails runs item 6',async(t)=>{
 const e=await mk(t);await seed(e);
 assert.equal((await run(e,'activate',C1,'acme')).code,0);const before=fp(e);
 fault(e,`healthz-${B}`);
 const r=await run(e,'rollback','acme','--timeout','3');assert.equal(r.code,1,r.out+r.err);
 assert.equal(r.err,rolledBack('healthz',C1));
 const l=logLines(e).at(-1);assert.deepEqual([l.op,l.result,l.code,l.rollback],['rollback','gate-failed','healthz','ok']);
 assert.deepEqual(fp(e),before);assert.deepEqual([units(e)[BUS].state,units(e)[BUS].wd],['active',join(COPIES,C1)]);
 assert.deepEqual(readdirSync(join(e.data,'bus')).filter((n)=>n.startsWith('bus.sqlite')).sort(),['bus.sqlite','bus.sqlite-shm','bus.sqlite-wal']);
});

test('T15 --plan names the migration and the restore and changes nothing',async(t)=>{
 const e=await mk(t);await seed(e);
 const quiet=async(...args)=>{
  const before=fp(e),n=calls(e).length,logs=logLines(e).length,r=await run(e,...args);
  assert.equal(r.code,0,r.err);assert.equal(r.err,'');
  assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);assert.equal(logLines(e).length,logs);
  return r.out;
 };
 assert.ok((await quiet('activate',C,'acme','--plan')).includes('needs: --migrate (not given; the run would roll back with migration-needs-flag)\n'));
 assert.equal((await run(e,'activate',C,'acme','--migrate')).code,0);const act=pointer(e).activation;
 assert.equal(await quiet('rollback','acme','--plan'),[
  'plan: rollback for acme',`from: ${C}`,`to: ${B}`,
  'store schema: 3h (read from the store the running bus holds)','target schema: 3g',
  `restore: the store must go back to 3g; needs --restore ${act}`,
  'commits: the run takes away 2 (newest first, at most 200):',...commitLines(`${B}..${C}`),
  ...planTail(e,B),''].join('\n'));
});

test('T26 --plan lists the commits an activate adds, after the migration lines',async(t)=>{
 const e=await mk(t);await seed(e);
 const head=(mig)=>['plan: activate for acme',`from: ${B}`,`to: ${C}`,'store schema: 3g (read from the store the running bus holds)','target schema: 3h',
  'migration: 3g to 3h, after a backup of the stopped store','migration steps: 3g to 3h',`needs: --migrate (${mig})`,'needs: Jason present for this run (decision 96 condition 2)'];
 const adds=commitLines(`${B}..${C}`);
 assert.equal(adds.length,2);assert.match(adds[0],/^ {2}[0-9a-f]{7,} row 904: C$/);assert.match(adds[1],/^ {2}[0-9a-f]{7,} row 903: C1$/);
 for(const [flags,mig,backup] of [[[],'not given; the run would roll back with migration-needs-flag',planNoBackup],[['--migrate'],'given',planBackup(e)]]){
  const r=await run(e,'activate',C,'acme','--plan',...flags);assert.equal(r.code,0,r.err);
  assert.equal(r.out,[...head(mig),backup,'commits: the run adds 2 (newest first, at most 200):',...adds,...planTail(e,C),''].join('\n'));
 }
 const same=await run(e,'activate',C1,'acme','--plan');assert.equal(same.code,0,same.err);
 assert.ok(same.out.includes(`target schema: 3g\nmigration: none; the store is at the target's version\n${planBackup(e)}\ncommits: the run adds 1 (newest first, at most 200):\n`),same.out);
});

test('T27 --plan names each migration step, or says the steps cannot be read',async(t)=>{
 const e=await mk(t);await seed(e,{store:'3f',pointer:'hand'});
 const two=await run(e,'activate',C,'acme','--plan');assert.equal(two.code,0,two.err);
 assert.ok(two.out.includes('\nmigration: 3f to 3h, after a backup of the stopped store\nmigration steps: 3f to 3g, 3g to 3h\nneeds: --migrate'),two.out);
 const none=await run(e,'activate',C1,'acme','--plan');assert.equal(none.code,0,none.err);
 assert.ok(none.out.includes(`\nmigration: 3f to 3g, after a backup of the stopped store\nmigration steps: cannot be read from ${COPIES}/${C1}/packages/bus/src/store.mjs\nneeds: --migrate`),none.out);
 const short=await run(e,'activate',A,'acme','--plan');assert.equal(short.code,0,short.err);
 assert.ok(short.out.includes(`\nmigration: 3f to 3g, after a backup of the stopped store\nmigration steps: cannot be read from ${COPIES}/${A}/packages/bus/src/store.mjs\nneeds: --migrate`),short.out);
});

test('T25 --plan refuses copies-unrelated when neither copy is an ancestor of the other',async(t)=>{
 const e=await mk(t);await seed(e,{pointer:'hand'});
 const r=await run(e,'activate',S,'acme','--plan');assert.equal(r.code,3);
 assert.equal(r.err,`stack-release: refusing copies-unrelated: neither ${B} nor ${S} is an ancestor of the other, so the plan cannot list the commits\n`);
 assert.equal(r.out,'');assert.ok(!existsSync(e.log));assert.ok(!existsSync(e.lock));
});

test('T23 --plan reads the store without changing a file, stopped or held',async(t)=>{
 const want=['target schema: 3h','migration: 3g to 3h, after a backup of the stopped store','migration steps: 3g to 3h','needs: --migrate (not given; the run would roll back with migration-needs-flag)','needs: Jason present for this run (decision 96 condition 2)'];
 for(const [name,stop,src] of [['stopped store',true,'read from the stopped store'],['held store',false,'read from the store the running bus holds']])await t.test(name,async(t)=>{
  const e=await mk(t);await seed(e,{pointer:'hand'});if(stop)sysctl(e,'stop',BUS);
  const before=tree(e.data),units0=[sha(join(e.units,'mosaic-bus@.service')),sha(join(e.units,CON)),sha(join(e.bin,'mosaic'))],store0=sha(e.store);
  const r=await run(e,'activate',C,'acme','--plan');assert.equal(r.code,0,r.err);
  const out=r.out.split('\n');
  assert.ok(out.includes(`store schema: 3g (${src})`),r.out);
  assert.deepEqual(out.slice(out.indexOf('target schema: 3h'),out.indexOf('target schema: 3h')+5),want);
  assert.deepEqual(tree(e.data),before);assert.equal(sha(e.store),store0);
  assert.deepEqual([sha(join(e.units,'mosaic-bus@.service')),sha(join(e.units,CON)),sha(join(e.bin,'mosaic'))],units0);
  assert.ok(!existsSync(e.log));assert.ok(!existsSync(e.lock));
  if(stop)assert.deepEqual(readdirSync(join(e.data,'bus')),['bus.sqlite']);
 });
});

test('T24 business-mismatch and capture-failed refuse with exit 3; a short id is a usage error',async(t)=>{
 const e=await mk(t);await seed(e);
 let n=calls(e).length,logs=logLines(e).length;
 const r=await run(e,'activate',C1,'other');assert.equal(r.code,3);
 assert.equal(r.err,'stack-release: refusing business-mismatch: the pointer is for acme\n');
 assert.equal(logLines(e).length,logs+1);assert.equal(logLines(e).at(-1).code,'business-mismatch');assert.deepEqual(startsStops(e,n),[]);
 const sets=join(e.state,'stack-rollback');mkdirSync(sets);chmodSync(sets,0o555);
 n=calls(e).length;logs=logLines(e).length;const before=fp(e);
 const c=await run(e,'activate',C1,'acme');assert.equal(c.code,3);
 assert.match(c.err,new RegExp(`^stack-release: refusing capture-failed: could not write the rollback set ${sets}/\\d{8}T\\d{6}Z-${C1.slice(0,12)}; nothing was stopped\\n$`));
 const l=logLines(e).slice(logs);
 assert.deepEqual(l.map((x)=>[x.result,x.code]),[['started',undefined],['refused','capture-failed']]);assert.equal(l[0].activation,l[1].activation);
 assert.deepEqual(startsStops(e,n),[]);assert.deepEqual(fp(e),before);
 const s=await run(e,'status','acme');assert.equal(s.code,0,s.err);assert.ok(!s.out.includes('interrupted run'),s.out);
 logs=logLines(e).length;
 const u=await run(e,'activate','abc123','acme');assert.equal(u.code,4);assert.match(u.err,/^usage: stack-release.sh adopt BUSINESS\n/);
 assert.equal(logLines(e).length,logs);
});

test('T16 status prints the pointer, the log, the check, bus status and drift, and writes nothing',async(t)=>{
 const e=await mk(t);await seed(e);
 const before=tree(e.data),fp0=fp(e);
 const r=await run(e,'status','acme');assert.equal(r.code,0,r.err);
 const copy=join(COPIES,B);
 assert.equal(r.out,[
  `pointer: ${e.pointer}`,...readFileSync(e.pointer,'utf8').trimEnd().split('\n').map((l)=>`  ${l}`),
  'log (last five lines):',...lines(e.log).map((l)=>`  ${l}`),
  'check:',`  bus: ${copy}`,`  Console: ${copy}`,`  CLI: ${copy}`,'  result: pass',
  'bus status:',`  bus: fixture status for ${B}`,
  'unit flags: match the pointer',
  'drift: 4 commit(s) on refactor since the pointer\'s copy',''].join('\n'));
 assert.deepEqual(tree(e.data),before);assert.deepEqual(fp(e),fp0);
});

test('T19 a started line with no final line: status shows it and every changing verb refuses',async(t)=>{
 const e=await mk(t);await seed(e);
 const act=`20261018T000000Z-${C1.slice(0,12)}`;
 appendFileSync(e.log,JSON.stringify({at:'2026-10-18T00:00:00Z',op:'activate',from:B,to:C1,backup:null,activation:act,result:'started'})+'\n');
 const s=await run(e,'status','acme');assert.equal(s.code,0);
 assert.ok(s.out.includes(`interrupted run: ${act} (started, no final line; Jason or Mos settles it)\n`),s.out);
 for(const args of [['adopt','acme'],['activate',C1,'acme'],['rollback','acme']]){
  const before=fp(e),n=calls(e).length,r=await run(e,...args);
  assert.equal(r.code,3,args.join(' '));
  assert.equal(r.err,`stack-release: refusing interrupted-run: activation ${act} started and has no final line; Jason or Mos settles it (status shows it)\n`);
  assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);
 }
});

test('T20 a held run lock refuses run-locked without a log line; status and --plan still run',async(t)=>{
 const e=await mk(t);await seed(e);
 const h=spawn('flock',[e.lock,'sleep','30'],{detached:true,stdio:'ignore'});
 t.after(()=>{try{process.kill(-h.pid,'SIGKILL')}catch{}});
 const end=Date.now()+10000;
 while(spawnSync('flock',['-n',e.lock,'true']).status!==1){assert.ok(Date.now()<end,'the lock holder did not take the lock');await new Promise((r)=>setTimeout(r,50))}
 for(const args of [['adopt','acme'],['activate',C1,'acme'],['rollback','acme']]){
  const before=fp(e),logs=logLines(e).length,r=await run(e,...args);
  assert.equal(r.code,3,args.join(' '));
  assert.equal(r.err,`stack-release: refusing run-locked: another stack-release run holds ${e.lock}\n`);
  assert.equal(logLines(e).length,logs);assert.deepEqual(fp(e),before);
 }
 assert.equal((await run(e,'status','acme')).code,0);
 const p=await run(e,'activate',C1,'acme','--plan');assert.equal(p.code,0,p.err);
});

test('T21 a bus unit with no MOSAIC_CLAUDE_BIN: adopt and activate refuse no-claude-pin',async(t)=>{
 const drop=(e)=>edit(join(e.units,'mosaic-bus@.service'),`Environment=MOSAIC_CLAUDE_BIN=${e.claude}\n`,'');
 const want=`stack-release: refusing no-claude-pin: ${BUS} has no MOSAIC_CLAUDE_BIN\n`;
 const a=await mk(t);await seed(a,{pointer:'none'});drop(a);
 const r=await run(a,'adopt','acme');assert.equal(r.code,3);assert.equal(r.err,want);assert.equal(pointer(a),null);
 const b=await mk(t);await seed(b);drop(b);const before=fp(b),n=calls(b).length;
 const s=await run(b,'activate',C1,'acme');assert.equal(s.code,3);assert.equal(s.err,want);
 assert.deepEqual(fp(b),before);assert.deepEqual(startsStops(b,n),[]);
});

test('T22 the stopped store read: a -wal or -shm refuses store-unclean and is left alone; a clean read adds no file',async(t)=>{
 for(const ext of ['-wal','-shm'])await t.test(`bus.sqlite${ext}`,async(t)=>{
  const e=await mk(t);await seed(e);fault(e,`stop-leaves${ext}`);
  const r=await run(e,'activate',C1,'acme','--timeout','3');assert.equal(r.code,1,r.out+r.err);
  assert.equal(r.err,rolledBack('store-unclean'));
  assert.ok(r.out.includes(`stack-release: ${e.store}${ext} is present; the store is left as it is for Jason or Mos\n`),r.out);
  const s=snaps(e),first=s[0],start=s.find((x)=>x.ev==='start');
  assert.equal(first.ev,'stop');assert.ok(`bus.sqlite${ext}` in first.files,JSON.stringify(first));
  assert.deepEqual(start.files,first.files);
 });
 await t.test('clean',async(t)=>{
  const e=await mk(t);await seed(e);
  const r=await run(e,'activate',C1,'acme');assert.equal(r.code,0,r.out+r.err);
  const s=snaps(e),stop=s.find((x)=>x.ev==='stop'),start=s.find((x)=>x.ev==='start');
  assert.deepEqual(Object.keys(stop.files),['bus.sqlite']);assert.deepEqual(start.files,stop.files);
 });
});

// --- Row 166 (#1663): docs/plans/2026-10-18_stack-release-hardening.md items 1 to 4 ---

test('T28 a unit path, drop-in directory or drop-in file that cannot be read, or a relative unit path, refuses drop-in-override before any stop',async(t)=>{
 const cases=[
  ['unit path',(e)=>[e.units,`cannot inspect unit path ${e.units}`]],
  ['drop-in directory',(e)=>{const d=join(e.units,`${BUS}.d`);mkdirSync(d);writeFileSync(join(d,'note.conf'),'[Service]\n');return [d,`cannot inspect drop-ins ${d}`]}],
  ['drop-in file',(e)=>{const d=join(e.units,`${BUS}.d`),f=join(d,'claude.conf');mkdirSync(d);writeFileSync(f,'[Service]\n');return [f,`cannot read drop-in ${f}`]}],
 ];
 for(const [name,make] of cases)await t.test(name,async(t)=>{
  const e=await mk(t);await seed(e);
  const [p,msg]=make(e),before=fp(e),n=calls(e).length,logs=logLines(e).length,mode=statSync(p).mode&0o7777;
  chmodSync(p,0);
  let r;try{r=await run(e,'activate',C1,'acme')}finally{chmodSync(p,mode)}
  assert.equal(r.code,3,r.out+r.err);assert.equal(r.err,`stack-release: refusing drop-in-override: ${msg}\n`);
  assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);
  assert.deepEqual([units(e)[BUS].state,units(e)[CON].state],['active','active']);
  assert.equal(logLines(e).length,logs+1);assert.equal(logLines(e).at(-1).code,'drop-in-override');
 });
 // install_guard refuses a unit path that isn't absolute, so the precheck does too.
 await t.test('relative unit path',async(t)=>{
  const e=await mk(t);await seed(e);fault(e,'unit-path','systemd/user');
  const before=fp(e),n=calls(e).length,logs=logLines(e).length;
  const r=await run(e,'activate',C1,'acme');assert.equal(r.code,3,r.out+r.err);
  assert.equal(r.err,'stack-release: refusing drop-in-override: invalid systemd unit path systemd/user\n');
  assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);
  assert.deepEqual([units(e)[BUS].state,units(e)[CON].state],['active','active']);
  assert.equal(logLines(e).length,logs+1);assert.equal(logLines(e).at(-1).code,'drop-in-override');
 });
});

test('T29 a bus that stops during the held-store read: --plan says so, rollback --restore refuses restore-mismatch',async(t)=>{
 await t.test('--plan',async(t)=>{
  const e=await mk(t);await seed(e);fault(e,'bus-stops-after','1');
  const before=fp(e),logs=logLines(e).length;
  const r=await run(e,'activate',C,'acme','--plan');assert.equal(r.code,0,r.err);assert.equal(r.err,'');
  assert.equal(r.out,['plan: activate for acme',`from: ${B}`,`to: ${C}`,
   'store schema: unknown (the bus stopped during the read, so the store state changed; run --plan again)','target schema: 3h',planBackup(e),
   'commits: the run adds 2 (newest first, at most 200):',...commitLines(`${B}..${C}`),...planTail(e,C),''].join('\n'));
  assert.deepEqual(fp(e),before);assert.equal(logLines(e).length,logs);
 });
 await t.test('rollback --restore',async(t)=>{
  const e=await mk(t);await seed(e);
  assert.equal((await run(e,'activate',C,'acme','--migrate')).code,0);const act=pointer(e).activation;
  const stamp=readFileSync(join(e.data,'backups','stack',act,'STAMP'),'utf8').replace(/\n+$/,'');
  fault(e,'bus-stops-after','1');const before=fp(e),n=calls(e).length;
  const r=await run(e,'rollback','acme','--restore',act);assert.equal(r.code,3,r.out+r.err);
  assert.equal(r.err,`stack-release: refusing restore-mismatch: the bus stopped while the events after ${stamp} were counted, so the store state changed; nothing was stopped\n`);
  assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);assert.equal(posts(e).length,0);
  assert.equal(logLines(e).at(-1).code,'restore-mismatch');
 });
});

test('T30 a copy check that agrees on another copy fails the gate with copy-check and rolls back',async(t)=>{
 const e=await mk(t);await seed(e);
 // A repo of its own, so the stand-in check replaces stack-copy.sh for this test only. Sourced, the
 // stand-in is the real script; run with `check`, it reports all three on the pointer's copy.
 const own=join(e.root,'repo');cpSync(repo,own,{recursive:true});
 const sc=join(own,'scripts','stack-copy.sh'),at=join(COPIES,B);cpSync(sc,join(own,'scripts','stack-copy.real.sh'));
 writeFileSync(sc,`#!/usr/bin/env bash\nreal="$(dirname "\${BASH_SOURCE[0]}")/stack-copy.real.sh"\nif [ "\${BASH_SOURCE[0]}" != "$0" ]; then source "$real"; return 0; fi\nif [ "\${1:-}" = check ]; then printf 'bus: %s\\nConsole: %s\\nCLI: %s\\n' '${at}' '${at}' '${at}'; exit 0; fi\nexec bash "$real" "$@"\n`);
 e.sr=join(own,'scripts','stack-release.sh');
 const r=await run(e,'activate',C1,'acme','--timeout','3');assert.equal(r.code,1,r.out+r.err);
 assert.equal(r.err,rolledBack('copy-check'));
 assert.ok(r.out.includes(`stack-release: gate failed on ${C1}: copy-check (the bus, Console and CLI agree on ${at}, not ${join(COPIES,C1)})\n`),r.out);
 const l=logLines(e).at(-1);assert.deepEqual([l.op,l.result,l.code,l.rollback],['activate','gate-failed','copy-check','ok']);
 assert.equal(pointer(e).copy,B);assert.deepEqual([units(e)[BUS].state,units(e)[BUS].wd],['active',at]);
});

test('T31 a quoted or escaped Environment= or ExecStart= is unreadable: refusals by name, nothing read from /a',async(t)=>{
 const forms=[
  ['Environment double quotes',(e)=>edit(join(e.units,'mosaic-bus@.service'),`Environment=MOSAIC_CLAUDE_BIN=${e.claude}\n`,'Environment="MOSAIC_CLAUDE_BIN=/a b/claude"\n')],
  ['Environment single quotes',(e)=>edit(join(e.units,'mosaic-bus@.service'),`Environment=MOSAIC_CLAUDE_BIN=${e.claude}\n`,'Environment=\'MOSAIC_CLAUDE_BIN=/a b/claude\'\n')],
  ['Environment backslash',(e)=>edit(join(e.units,'mosaic-bus@.service'),`Environment=MOSAIC_CLAUDE_BIN=${e.claude}\n`,'Environment=MOSAIC_CLAUDE_BIN=/a\\ b/claude\n')],
  ['ExecStart quotes',(e)=>edit(join(e.units,'mosaic-bus@.service'),' bus start %i\n',' bus start %i "--pm"\n')],
  ['Console ExecStart quotes',(e)=>edit(join(e.units,CON),' --business acme\n',' --business "acme"\n')],
 ];
 for(const [name,change] of forms)await t.test(name,async(t)=>{
  const e=await mk(t);await seed(e);change(e);const before=fp(e),n=calls(e).length;
  const r=await run(e,'activate',C1,'acme');assert.equal(r.code,3,r.out+r.err);
  assert.equal(r.err,`stack-release: refusing unit-flags-drift: cannot read ${BUS} or ${CON}\n`);
  assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);
  const s=await run(e,'status','acme');assert.equal(s.code,0,s.err);assert.ok(s.out.includes('unit flags: cannot read the units\n'),s.out);
  const a=await mk(t);await seed(a,{pointer:'none'});change(a);
  const d=await run(a,'adopt','acme');assert.equal(d.code,3,d.out+d.err);
  assert.equal(d.err,`stack-release: refusing check-failed: cannot read ${BUS} or ${CON}\n`);assert.equal(pointer(a),null);
  for(const x of [r,d])assert.ok(!x.err.includes('/a'),x.err);
 });
});

// --- Row 169 (#1666): docs/plans/2026-10-19_pm-after-harness.md items 1 to 4 ---

const HARNESS={harness:['claude-code']};
const busUnit=(e)=>readFileSync(join(e.units,'mosaic-bus@.service'),'utf8');
const execLine=(to,pm)=>`ExecStart=${COPIES}/${to}/scripts/mosaic bus start %i${pm?' --pm':''}\n`;
const sinceLines=(e)=>lines(join(e.sd,'journal-since.log')).length;
const PENDING_MSG='the pointer is pending (activate --pm-after-harness); run pm-on or rollback first';
// The stack after phase 1: seeded on B with --pm, then activate C1 --pm-after-harness.
async function pending(e){
 await seed(e,{pm:true});
 const r=await run(e,'activate',C1,'acme','--pm-after-harness');assert.equal(r.code,0,r.out+r.err);
}
// A refusal before anything stops: exit 3, the message, no file changed, no start or stop, one log line.
async function refused(e,args,code,msg){
 const before=fp(e),n=calls(e).length,logs=logLines(e).length;
 const r=await run(e,...args);assert.equal(r.code,3,r.out+r.err);(e.outs??=[]).push(r.out,r.err);
 assert.equal(r.err,`stack-release: refusing ${code}: ${msg}\n`);
 assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);
 assert.equal(logLines(e).length,logs+1);assert.deepEqual([logLines(e).at(-1).result,logLines(e).at(-1).code],['refused',code]);
}

test('T32 item 1: --pm-after-harness refuses a target without harness or a file that sets it, and passes without the PM',async(t)=>{
 await t.test('usage: not with --pm, and only for activate',async(t)=>{
  const e=await mk(t);await seed(e,{pm:true});const logs=logLines(e).length;
  for(const args of [['activate',C1,'acme','--pm','--pm-after-harness'],['activate',C1,'acme','--pm-after-harness','--pm'],['rollback','acme','--pm-after-harness'],['pm-on','acme','--pm-after-harness']]){
   const r=await run(e,...args);assert.equal(r.code,4,args.join(' '));assert.match(r.err,/^usage: stack-release.sh adopt BUSINESS\n/);
  }
  assert.equal(logLines(e).length,logs);
 });
 await t.test('pm-after-harness-target',async(t)=>{
  const e=await mk(t);await seed(e,{pm:true});
  await refused(e,['activate',A,'acme','--pm-after-harness'],'pm-after-harness-target',`${A} has no harness plug-in kind, so there is nothing to wait for; use --pm`);
 });
 await t.test('pm-after-harness-set',async(t)=>{
  const e=await mk(t);await seed(e,{pm:true});
  for(const [h,shown] of [[['claude-code'],'["claude-code"]'],[[],'[]']]){
   biz(e,{harness:h});
   await refused(e,['activate',C1,'acme','--pm-after-harness'],'pm-after-harness-set',`the business file already sets harness ${shown}; use --pm`);
  }
 });
 await t.test('a pointer without pm',async(t)=>{
  const e=await mk(t);await seed(e);
  await refused(e,['activate',C1,'acme','--pm-after-harness'],'unit-flags-drift','the units differ from the pointer; settle it first:\n  pm: pointer 0, --pm-after-harness needs a pointer with pm 1');
 });
 await t.test('phase 1 installs without --pm, skips pm_launched and writes the pending pointer',async(t)=>{
  const e=await mk(t);await seed(e,{pm:true});const since=sinceLines(e),n=calls(e).length;
  const r=await run(e,'activate',C1,'acme','--pm-after-harness');assert.equal(r.code,0,r.out+r.err);
  assert.ok(r.out.endsWith(`stack-release: activate ok: ${C1} is live for acme without its PM; the PM is pending: Jason's plugins set of harness, then pm-on\n`),r.out);
  assert.ok(busUnit(e).includes(execLine(C1,false)),busUnit(e));
  assert.equal(sinceLines(e),since);
  assert.deepEqual(startsStops(e,n),[`stop ${CON}`,`stop ${BUS}`,`start ${BUS}`,`start ${CON}`]);
  const {at,activation,...p}=pointer(e);
  assert.deepEqual(p,{copy:C1,business:'acme',pm:false,pmPending:true,claude:e.claude,console:['--port',e.port,'--business','acme'],schema:'3g'});
  const l=logLines(e).at(-1);assert.deepEqual([l.op,l.from,l.to,l.result,l.pm],['activate',B,C1,'ok','pending']);
 });
});

test('T33 item 2: read_pointer takes pmPending only as true beside pm false; a pending pointer refuses activate and shows in status',async(t)=>{
 await t.test('read_pointer',async(t)=>{
  const e=await mk(t);await seed(e);const good=pointer(e);
  for(const bad of [{pmPending:false},{pmPending:'true'},{pmPending:1},{pmPending:null},{pm:true,pmPending:true}]){
   writeFileSync(e.pointer,JSON.stringify({...good,...bad})+'\n');
   const before=fp(e),n=calls(e).length,logs=logLines(e).length;
   for(const args of [['activate',C1,'acme'],['status','acme']]){
    const r=await run(e,...args);assert.equal(r.code,1,`${JSON.stringify(bad)} ${args[0]}`);
    assert.ok(r.err.endsWith(`stack-release: ${e.pointer} is unreadable; Jason or Mos settles it\n`),r.err);
   }
   assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);assert.equal(logLines(e).length,logs);
  }
 });
 await t.test('pm-pending, already-adopted and the status line',async(t)=>{
  const e=await mk(t);await pending(e);
  for(const args of [['activate',C,'acme','--migrate'],['activate',C,'acme','--pm','--migrate'],['activate',C1,'acme','--pm-after-harness']])await refused(e,args,'pm-pending',PENDING_MSG);
  await refused(e,['adopt','acme'],'already-adopted',`${e.pointer} exists (copy ${C1})`);
  const before=tree(e.data),r=await run(e,'status','acme');assert.equal(r.code,0,r.err);
  const out=r.out.split('\n');
  assert.deepEqual(out.slice(0,3),[`pointer: ${e.pointer}`,`  ${readFileSync(e.pointer,'utf8').trimEnd()}`,'pm: pending (activate --pm-after-harness); next: Jason\'s plugins set of harness, then stack-release.sh pm-on acme']);
  assert.ok(out.includes('unit flags: match the pointer'),r.out);
  assert.deepEqual(tree(e.data),before);
 });
});

test('T34 item 3: pm-on refuses before any stop, passes with the PM, or puts the phase-1 bus back',async(t)=>{
 await t.test('not-pending',async(t)=>{
  const e=await mk(t);await seed(e,{pm:true});biz(e,HARNESS);
  await refused(e,['pm-on','acme'],'not-pending','the pointer is not pending; pm-on follows activate --pm-after-harness');
 });
 await t.test('harness-unset',async(t)=>{
  const e=await mk(t);await pending(e);
  await refused(e,['pm-on','acme'],'harness-unset','the business file sets no harness; Jason sets it with plugins set first');
  biz(e,{harness:[]});
  await refused(e,['pm-on','acme'],'harness-unset','the business file\'s harness is [], not a non-empty list');
 });
 await t.test('a launched line passes: the bus alone restarts with --pm',async(t)=>{
  const e=await mk(t);await pending(e);biz(e,HARNESS);
  const since=sinceLines(e),n=calls(e).length,con=sha(join(e.units,CON)),act=pointer(e).activation;
  const r=await run(e,'pm-on','acme');assert.equal(r.code,0,r.out+r.err);
  assert.ok(r.out.endsWith(`stack-release: pm-on ok: the PM is live on ${C1} for acme\n`),r.out);
  assert.deepEqual(startsStops(e,n),[`stop ${BUS}`,`start ${BUS}`]);
  assert.ok(busUnit(e).includes(execLine(C1,true)),busUnit(e));assert.equal(sha(join(e.units,CON)),con);
  assert.equal(sinceLines(e),since+1);assert.match(lines(join(e.sd,'journal-since.log')).at(-1),/^@\d+$/);
  const {at,activation,...p}=pointer(e);assert.notEqual(activation,act);
  assert.deepEqual(p,{copy:C1,business:'acme',pm:true,claude:e.claude,console:['--port',e.port,'--business','acme'],schema:'3g'});
  const l=logLines(e).at(-1);assert.deepEqual([l.op,l.to,l.result,l.pm,l.activation],['pm-on',C1,'ok','on',activation]);
  const s=await run(e,'status','acme');assert.equal(s.code,0,s.err);assert.ok(!s.out.includes('pm: pending'),s.out);
 });
 await t.test('a failed pm_launched puts the phase-1 unit back: exit 1, still pending',async(t)=>{
  const e=await mk(t);await pending(e);biz(e,HARNESS);fault(e,`pm-${C1}`,'none');
  const before=fp(e),p0=readFileSync(e.pointer,'utf8'),n=calls(e).length;
  const r=await run(e,'pm-on','acme','--timeout','3');assert.equal(r.code,1,r.out+r.err);
  const l=logLines(e).at(-1),rs=join(e.state,'stack-rollback',l.activation);
  assert.equal(r.err,`stack-release: pm-on failed with pm-launch-unconfirmed (no launched line since the start); the bus runs ${C1} without its PM again and passed the phase-1 gate, and the pointer stays pending. Fix harness with plugins set, then run pm-on again. Rollback set: ${rs}\n`);
  assert.deepEqual([l.op,l.result,l.code,l.why],['pm-on','pm-on-failed','pm-launch-unconfirmed','no launched line since the start']);
  assert.deepEqual(fp(e),before);assert.ok(busUnit(e).includes(execLine(C1,false)));
  assert.equal(readFileSync(e.pointer,'utf8'),p0);
  assert.deepEqual([units(e)[BUS].state,units(e)[BUS].wd,units(e)[CON].state],['active',join(COPIES,C1),'active']);
  assert.deepEqual(startsStops(e,n),[`stop ${BUS}`,`start ${BUS}`,`stop ${BUS}`,`start ${BUS}`]);
 });
 await t.test('a failed phase-1 gate too: pm-on-down, exit 2, both units stopped',async(t)=>{
  const e=await mk(t);await pending(e);biz(e,HARNESS);fault(e,`healthz-${C1}`);
  const p0=readFileSync(e.pointer,'utf8'),store=sha(e.store);
  const r=await run(e,'pm-on','acme','--timeout','3');assert.equal(r.code,2,r.out+r.err);
  const l=logLines(e).at(-1),rs=join(e.state,'stack-rollback',l.activation);
  assert.equal(r.err,`stack-release: pm-on-down: pm-on failed with healthz and the phase-1 bus with healthz; both units are stopped. Rollback set: ${rs}\n`);
  assert.deepEqual([l.result,l.code,l.phase1],['pm-on-down','healthz','healthz']);
  assert.deepEqual([units(e)[BUS].state,units(e)[CON].state],['inactive','inactive']);
  assert.equal(readFileSync(e.pointer,'utf8'),p0);assert.equal(sha(e.store),store);
  assert.ok(busUnit(e).includes(execLine(C1,false)));
 });
});

test('T35 item 4: rollback from pending installs --pm; a plug-in kind the target lacks refuses by name',async(t)=>{
 await t.test('rollback from pending gates pm_launched on the old copy',async(t)=>{
  const e=await mk(t);await pending(e);const since=sinceLines(e);
  const r=await run(e,'rollback','acme');assert.equal(r.code,0,r.out+r.err);
  assert.ok(busUnit(e).includes(execLine(B,true)),busUnit(e));
  assert.equal(sinceLines(e),since+1);
  const {at,activation,...p}=pointer(e);
  assert.deepEqual(p,{copy:B,business:'acme',pm:true,claude:e.claude,console:['--port',e.port,'--business','acme'],schema:'3g'});
 });
 await t.test('after the harness set, rollback refuses until harness is gone',async(t)=>{
  const e=await mk(t);await pending(e);biz(e,HARNESS);
  assert.equal((await run(e,'pm-on','acme')).code,0);
  await refused(e,['rollback','acme'],'unknown-kind-for-target',`the business file names plug-in kind(s) harness, which ${B} does not know; set each to null with plugins set through the live bus first`);
  biz(e);
  const r=await run(e,'rollback','acme');assert.equal(r.code,0,r.out+r.err);
  assert.ok(busUnit(e).includes(execLine(B,true)));assert.deepEqual([pointer(e).copy,pointer(e).pm],[B,true]);
 });
 await t.test('activate names every kind the target lacks',async(t)=>{
  const e=await mk(t);await seed(e);
  biz(e,{...HARNESS,widget:{}});
  await refused(e,['activate',A,'acme'],'unknown-kind-for-target',`the business file names plug-in kind(s) harness widget, which ${A} does not know`);
  await refused(e,['activate',C1,'acme'],'unknown-kind-for-target',`the business file names plug-in kind(s) widget, which ${C1} does not know`);
 });
});

test('T36 --plan shows the pending state and lists the row 169 refusals it can see',async(t)=>{
 const e=await mk(t);await seed(e,{pm:true});
 const quiet=async(code,...args)=>{
  const before=fp(e),n=calls(e).length,logs=logLines(e).length,r=await run(e,...args);
  assert.equal(r.code,code,r.out+r.err);assert.equal(r.err,'');
  assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);assert.equal(logLines(e).length,logs);
  return r.out.split('\n');
 };
 let out=await quiet(0,'activate',C1,'acme','--pm-after-harness','--plan');
 assert.deepEqual(out.slice(-6),['pm: the bus starts without --pm and the PM stays pending; next: Jason\'s plugins set of harness, then pm-on',...planTail(e,C1),'']);
 biz(e,HARNESS);
 out=await quiet(3,'activate',A,'acme','--pm-after-harness','--plan');
 assert.deepEqual(out.slice(-7),['pm: the bus starts without --pm and the PM stays pending; next: Jason\'s plugins set of harness, then pm-on',...planTail(e,A),`refuses unknown-kind-for-target: the business file names plug-in kind(s) harness, which ${A} does not know`,'']);
 out=await quiet(3,'activate',C1,'acme','--pm-after-harness','--plan');
 assert.equal(out.at(-2),'refuses pm-after-harness-set: the business file already sets harness ["claude-code"]; use --pm');
 biz(e);assert.equal((await run(e,'activate',C1,'acme','--pm-after-harness')).code,0);
 out=await quiet(3,'activate',C,'acme','--plan');
 assert.deepEqual(out.slice(-7),['pm: the pointer is pending (activate --pm-after-harness); the bus runs without its PM',...planTail(e,C,true),`refuses pm-pending: ${PENDING_MSG}`,'']);
 out=await quiet(0,'rollback','acme','--plan');
 assert.deepEqual(out.slice(-6),['pm: the pointer is pending (activate --pm-after-harness); the bus runs without its PM',...planTail(e,B,true),'']);
});

// Row 176 test 11: supported and older Console copies deliberately differ from the checkout.
const testerFlags=(e,port='7333')=>['--port',e.port,'--business','acme','--tester-port',port];
const consoleText=(e)=>readFileSync(join(e.units,CON),'utf8');
const stepText=(e)=>readFileSync(join(e.state,'stack-rollback',pointer(e).activation,'steps.log'),'utf8');

test('T37 tester-port activate writes pointer and unit, replaces the port, and supported re-pin and rollback keep it',async(t)=>{
 const e=await mk(t);await seed(e);
 let r=await run(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);
 assert.deepEqual(pointer(e).console,testerFlags(e));assert.match(consoleText(e),/--tester-port 7333(?:\n|$)/);
 r=await run(e,'status','acme');assert.equal(r.code,0,r.err);assert.match(r.out,/unit flags: match the pointer/);
 r=await run(e,'activate',B,'acme','--tester-port','7334');assert.equal(r.code,0,r.out+r.err);
 assert.deepEqual(pointer(e).console,testerFlags(e,'7334'));
 assert.match(consoleText(e),/--tester-port 7334(?:\n|$)/);assert.doesNotMatch(consoleText(e),/--tester-port 7333/);
 assert.equal((consoleText(e).match(/--tester-port/g)||[]).length,1);
 r=await run(e,'activate',C1,'acme','--plan');assert.equal(r.code,0,r.out+r.err);assert.match(r.out,/Console: .*--tester-port 7334/);
 r=await run(e,'activate',C1,'acme');assert.equal(r.code,0,r.out+r.err);assert.deepEqual(pointer(e).console,testerFlags(e,'7334'));
 r=await run(e,'rollback','acme');assert.equal(r.code,0,r.out+r.err);assert.equal(pointer(e).copy,B);
 assert.deepEqual(pointer(e).console,testerFlags(e,'7334'));assert.match(consoleText(e),/--tester-port 7334(?:\n|$)/);
});

test('T38 tester-port rollback to unsupported target drops flag in plan, steps, unit and pointer',async(t)=>{
 const e=await mk(t);await seed(e,{copy:A});
 let r=await run(e,'activate',B,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);
 const before=fp(e),n=calls(e).length;
 r=await run(e,'rollback','acme','--plan');assert.equal(r.code,0,r.out+r.err);
 assert.match(r.out,/drop[^\n]*--tester-port 7333/i);assert.doesNotMatch(r.out.split('\n').find((l)=>l.startsWith('Console: ')),/--tester-port/);
 assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);
 r=await run(e,'rollback','acme');assert.equal(r.code,0,r.out+r.err);assert.equal(pointer(e).copy,A);
 assert.deepEqual(pointer(e).console,['--port',e.port,'--business','acme']);assert.doesNotMatch(consoleText(e),/--tester-port/);
 assert.match(stepText(e),/drop[^\n]*--tester-port 7333/i);
});

test('T39 tester-port explicit unsupported target reads target copy and refuses before stopping either unit',async(t)=>{
 const e=await mk(t);await seed(e);const before=fp(e),n=calls(e).length;
 const r=await run(e,'activate',A,'acme','--tester-port','7333');assert.equal(r.code,3,r.out+r.err);
 assert.match(r.err,/refusing tester-port-target:/);assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);
 assert.equal(units(e)[BUS].state,'active');assert.equal(units(e)[CON].state,'active');
 // The repository's Console accepts the flag while A's Console does not: probing REPO fails this test.
 assert.match(readFileSync(join(repo,'packages/webui/src/cli.mjs'),'utf8'),/--tester-port/);
});

test('T40 tester-port invalid values refuse exit 4 before stopping, including tunnel and main ports',async(t)=>{
 const e=await mk(t);await seed(e);const before=fp(e),n=calls(e).length;
 for(const value of ['7332',e.port,'1023','65536','x','7333.5']){
  const r=await run(e,'activate',C1,'acme','--tester-port',value);assert.equal(r.code,4,`${value}: ${r.out}${r.err}`);
  assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);
 }
});

test('T41 tester-port inherited activate to unsupported target drops it and retains drift refusal and failed-run recovery',async(t)=>{
 const e=await mk(t);await seed(e);
 let r=await run(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);
 r=await run(e,'activate',A,'acme','--plan');assert.equal(r.code,0,r.out+r.err);assert.match(r.out,/drop[^\n]*--tester-port 7333/i);
 fault(e,`check-${A}`);const before=fp(e);
 r=await run(e,'activate',A,'acme','--timeout','3');assert.equal(r.code,1,r.out+r.err);assert.deepEqual(fp(e),before);
 rmSync(join(e.sd,'faults',`check-${A}`));
 edit(join(e.units,CON),'--tester-port 7333','--tester-port 7334');const n=calls(e).length;
 r=await run(e,'activate',A,'acme');assert.equal(r.code,3,r.out+r.err);assert.match(r.err,/unit-flags-drift/);assert.deepEqual(startsStops(e,n),[]);
 edit(join(e.units,CON),'--tester-port 7334','--tester-port 7333');
 r=await run(e,'activate',A,'acme');assert.equal(r.code,0,r.out+r.err);
 assert.deepEqual(pointer(e).console,['--port',e.port,'--business','acme']);assert.doesNotMatch(consoleText(e),/--tester-port/);
 assert.match(stepText(e),/drop[^\n]*--tester-port 7333/i);
});

test('T42 tester-port pm-on preserves pointer Console flags',async(t)=>{
 const e=await mk(t);await seed(e,{pm:true});
 let r=await run(e,'activate',C1,'acme','--pm-after-harness','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);
 biz(e,HARNESS);
 r=await run(e,'pm-on','acme');assert.equal(r.code,0,r.out+r.err);
 assert.deepEqual(pointer(e).console,testerFlags(e));assert.match(consoleText(e),/--tester-port 7333(?:\n|$)/);
});

// Row 180 item 1 (P19 391): a date stand-in prints one second for every call that names a time,
// so each run below starts in that second, as two runs within one real second do. Calls for
// +%s (the gate's start mark) pass through, so each gate still reads only its own start.
function pinClock(e){
 const dir=join(e.root,'clock'),second=Math.floor(Date.now()/1000);mkdirSync(dir);
 writeFileSync(join(dir,'date'),`#!/bin/sh\ncase "$*" in *%s*) exec /usr/bin/date "$@" ;; esac\nexec /usr/bin/date -d @${second} "$@"\n`,{mode:0o755});
 e.env={...e.env,PATH:`${dir}:${e.env.PATH}`};
 return execFileSync(join(dir,'date'),['-u','+%Y%m%dT%H%M%SZ'],{env:e.env,encoding:'utf8'}).trim();
}
const rollbackSets=(e)=>readdirSync(join(e.state,'stack-rollback')).sort();

test('T43 row 180 item 1: runs in one second get distinct activation ids, rollback sets and post-attempt stores',async(t)=>{
 await t.test('activate then pm-on on the same copy',async(t)=>{
  const e=await mk(t);await seed(e,{pm:true});const sec=pinClock(e),id=`${sec}-${C1.slice(0,12)}`;
  let r=await run(e,'activate',C1,'acme','--pm-after-harness');assert.equal(r.code,0,r.out+r.err);
  assert.equal(pointer(e).activation,id);
  biz(e,HARNESS);
  r=await run(e,'pm-on','acme');assert.equal(r.code,0,r.out+r.err);
  assert.equal(pointer(e).activation,`${id}-1`);
  assert.deepEqual(logLines(e).slice(-4).map((l)=>[l.op,l.result,l.activation]),[['activate','started',id],['activate','ok',id],['pm-on','started',`${id}-1`],['pm-on','ok',`${id}-1`]]);
  assert.deepEqual(rollbackSets(e),[id,`${id}-1`]);
  for(const a of [id,`${id}-1`])assert.ok(existsSync(join(e.state,'stack-rollback',a,'SHA256SUMS')),a);
 });
 await t.test('two restores: an old-form id and a suffixed one, each with its own post-attempt store',async(t)=>{
  const e=await mk(t);await seed(e);const sec=pinClock(e),c=`${sec}-${C.slice(0,12)}`,b=`${sec}-${B.slice(0,12)}`;
  for(const [act,restore] of [[c,b],[`${c}-1`,`${b}-1`]]){
   let r=await run(e,'activate',C,'acme','--migrate');assert.equal(r.code,0,r.out+r.err);assert.equal(pointer(e).activation,act);
   assert.ok(existsSync(join(e.data,'backups','stack',act,'SHA256SUMS')),act);
   r=await run(e,'rollback','acme','--restore',act);assert.equal(r.code,0,r.out+r.err);
   const post=join(e.data,`bus.post-attempt-${sec}${restore.slice(b.length)}`);
   assert.ok(r.out.startsWith(`restore: ${join(e.data,'backups','stack',act)}; the store now in place moves to ${post} and is kept; 0 event(s) were written after the backup\n`),r.out);
   assert.deepEqual([pointer(e).copy,pointer(e).activation,pointer(e).schema],[B,restore,'3g']);
   assert.equal(logLines(e).at(-1).backup,act);
  }
  assert.deepEqual(posts(e).sort(),[`bus.post-attempt-${sec}`,`bus.post-attempt-${sec}-1`]);
  assert.deepEqual(readdirSync(join(e.data,'backups','stack')).sort(),[c,`${c}-1`]);
  assert.deepEqual(rollbackSets(e),[c,`${c}-1`,b,`${b}-1`].sort());
 });
 await t.test('adopt takes the next free id too',async(t)=>{
  const e=await mk(t);await seed(e,{pointer:'none'});const id=`${pinClock(e)}-${B.slice(0,12)}`;
  mkdirSync(join(e.state,'stack-rollback',id),{recursive:true});
  const r=await run(e,'adopt','acme');assert.equal(r.code,0,r.out+r.err);
  assert.equal(pointer(e).activation,`${id}-1`);
  assert.deepEqual(logLines(e).map((l)=>[l.op,l.result,l.activation]),[['adopt','ok',`${id}-1`]]);
 });
 await t.test('all ten names taken: capture-failed before anything stops, and the log line names no activation',async(t)=>{
  const e=await mk(t);await seed(e);const sec=pinClock(e),id=`${sec}-${C1.slice(0,12)}`;
  // A rollback set, a backup or a post-attempt store each takes a name.
  for(const s of ['','-1','-2','-3','-4','-5','-6','-7'])mkdirSync(join(e.state,'stack-rollback',`${id}${s}`),{recursive:true});
  mkdirSync(join(e.data,'backups','stack',`${id}-8`),{recursive:true});writeFileSync(join(e.data,`bus.post-attempt-${sec}-9`),'');
  await refused(e,['activate',C1,'acme'],'capture-failed',`every activation id for ${id} is taken; nothing was stopped`);
  assert.equal(logLines(e).at(-1).activation,null);
 });
 await t.test('--restore takes an id with or without -1 to -9 and nothing else',async(t)=>{
  const e=await mk(t);await seed(e);const id=`20261020T013708Z-${B.slice(0,12)}`;
  for(const bad of [`${id}-0`,`${id}-10`,`${id}-a`,`${id}-`,`${id}1`]){
   const r=await run(e,'rollback','acme','--restore',bad,'--plan');assert.equal(r.code,4,bad);
  }
  for(const good of [id,`${id}-1`,`${id}-9`]){
   const r=await run(e,'rollback','acme','--restore',good,'--plan');assert.notEqual(r.code,4,`${good}: ${r.err}`);
  }
 });
});

test('T44 row 180 item 2: --plan lists tester-port-invalid and tester-port-target with its other refusals',async(t)=>{
 const usageText=async(e)=>(await run(e,'--help')).err;
 await t.test('a bad tester port',async(t)=>{
  const e=await mk(t);await seed(e,{pm:true});biz(e,HARNESS);
  const before=fp(e),n=calls(e).length,logs=logLines(e).length,p0=readFileSync(e.pointer,'utf8');
  const rule=(port,main)=>`--tester-port ${port} is not a whole port from 1024 to 65535 other than 7332${main?` and the Console's --port ${main}`:''}`;
  // The fixture's Console has --port e.port; a pointer without --port has the default 7332, which
  // the reason names once. --plan reads the pointer's flags and not the units, so only it changes.
  const noPort=()=>{const q=JSON.parse(p0);q.console=q.console.filter((f,i,a)=>f!=='--port'&&a[i-1]!=='--port');writeFileSync(e.pointer,JSON.stringify(q)+'\n')};
  for(const [port,reason,edit] of [['80',rule('80',e.port)],[e.port,rule(e.port,e.port)],['80',rule('80'),noPort],['7332',rule('7332'),noPort]]){
   if(edit)edit();
   const r=await run(e,'activate',C1,'acme','--pm-after-harness','--plan','--tester-port',port);
   assert.equal(r.code,3,r.out+r.err);assert.equal(r.err,'');
   assert.deepEqual(r.out.split('\n').filter((l)=>l.startsWith('refuses ')),[`refuses tester-port-invalid: ${reason}`,'refuses pm-after-harness-set: the business file already sets harness ["claude-code"]; use --pm']);
   const u=await run(e,'activate',C1,'acme','--pm-after-harness','--tester-port',port);
   assert.equal(u.code,4,u.out+u.err);assert.equal(u.out,'');assert.equal(u.err,await usageText(e));
   writeFileSync(e.pointer,p0);
  }
  assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);assert.equal(logLines(e).length,logs);
 });
 await t.test('without --plan a bad port is usage before any pointer read',async(t)=>{
  // parse_opts checks it, so a host with no pointer gets usage and not no-pointer (exit 3, a log line).
  const e=await mk(t);await seed(e,{pointer:'none'});
  const n=calls(e).length,u=await run(e,'activate',C1,'acme','--tester-port','80');
  assert.equal(u.code,4,u.out+u.err);assert.equal(u.out,'');assert.equal(u.err,await usageText(e));
  assert.deepEqual(logLines(e),[]);assert.deepEqual(startsStops(e,n),[]);
 });
 await t.test('a target Console without --tester-port',async(t)=>{
  const e=await mk(t);await seed(e);biz(e,HARNESS);
  const before=fp(e),n=calls(e).length,logs=logLines(e).length;
  const r=await run(e,'activate',A,'acme','--tester-port','7333','--plan');
  assert.equal(r.code,3,r.out+r.err);assert.equal(r.err,'');
  assert.deepEqual(r.out.split('\n').filter((l)=>l.startsWith('refuses ')),[`refuses tester-port-target: ${A}'s Console does not support --tester-port`,`refuses unknown-kind-for-target: the business file names plug-in kind(s) harness, which ${A} does not know`]);
  assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);assert.equal(logLines(e).length,logs);
  await refused(e,['activate',A,'acme','--tester-port','7333'],'tester-port-target',`${A}'s Console does not support --tester-port`);
 });
});

// Row 181 (#1679, P19 390): COUNTED and STORE_JS as the script under test has them. The fixture
// tables carry only seq and at, which is all the count reads.
const srText=readFileSync(SR,'utf8');
const COUNTED=/^COUNTED="([^"]*)"$/m.exec(srText)[1].split(' ');
const STORE_JS=/^STORE_JS='([\s\S]*?)'$/m.exec(srText)[1];
// sage-1163's list 2, written out so that a table dropped from the script's COUNTED fails T45 as
// well as T46.
const LISTED=['role_claims','thread_claims','decision_events','messages','deliveries','task_snapshots','projects','threads','thread_opens','instance_names','usage_records'];
const LATE='2999-01-01T00:00:00.000Z';
const addRow=(file,table,at=LATE)=>{const db=new DatabaseSync(file);db.exec(`CREATE TABLE IF NOT EXISTS ${table} (seq INTEGER PRIMARY KEY, at TEXT NOT NULL)`);db.prepare(`INSERT INTO ${table} (at) VALUES (?)`).run(at);db.close()};

test('T45 row 181 items 2 and 3: the restore guard counts events and every COUNTED table',async(t)=>{
 await t.test('both modes count events and each listed table, and a table the store lacks counts 0',async(t)=>{
  const d=mkdtempSync(join(tmpdir(),'sr181-'));t.after(()=>rmSync(d,{recursive:true,force:true}));
  const stamp='2020-01-01T00:00:00.000Z',count=(f,mode)=>execFileSync(NODE,['-e',STORE_JS,'--',mode,f,stamp,COUNTED.join(' ')],{encoding:'utf8'});
  const store=(name,rows,tables=rows)=>{
   const f=join(d,name);for(const x of ['events',...tables])addRow(f,x,'2000-01-01T00:00:00.000Z');for(const x of rows)addRow(f,x);return f;
  };
  const both=(f,want)=>{const s=sha(f);for(const mode of ['count','heldcount'])assert.equal(count(f,mode),want,`${basename(f)} ${mode}`);assert.equal(sha(f),s);assert.deepEqual(readdirSync(d).filter((n)=>n.startsWith(`${basename(f)}-`)),[])};
  for(const x of LISTED)both(store(`${x}.sqlite`,['events',x]),`2\t1 event(s), 1 ${x} row(s)\n`);
  both(store('brief.sqlite',['events','usage_records','instance_names']),'3\t1 event(s), 1 instance_names row(s), 1 usage_records row(s)\n');
  // A 3f store: no usage_records table, and nothing to refuse.
  both(store('3f.sqlite',['events'],['events','instance_names']),'1\t1 event(s)\n');
  both(store('none.sqlite',[],['instance_names']),'0\t0 event(s)\n');
 });
 for(const x of ['instance_names','usage_records'])await t.test(`one ${x} row and no event refuses before any stop; --events 1 restores`,async(t)=>{
  const e=await mk(t);await seed(e);
  assert.equal((await run(e,'activate',C,'acme','--migrate')).code,0);const act=pointer(e).activation;
  addRow(e.store,x);
  const want=`stack-release: refusing post-backup-events: 0 event(s), 1 ${x} row(s) were written after the backup; Jason decides, then --events 1\n`;
  for(const extra of [[],['--events','2']]){
   const before=fp(e),n=calls(e).length,r=await run(e,'rollback','acme','--restore',act,...extra);
   assert.equal(r.code,3,extra.join(' '));assert.equal(r.err,want);assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);
  }
  const r=await run(e,'rollback','acme','--restore',act,'--events','1');assert.equal(r.code,0,r.out+r.err);
  assert.ok(r.out.includes(`; 0 event(s), 1 ${x} row(s) were written after the backup\n`),r.out);
  assert.deepEqual([pointer(e).copy,pointer(e).schema],[B,'3g']);assert.equal(sha(e.store),backupSum(e,act));
 });
 await t.test('a listed table that cannot be read refuses restore-mismatch before any stop',async(t)=>{
  const e=await mk(t);await seed(e);
  assert.equal((await run(e,'activate',C,'acme','--migrate')).code,0);const act=pointer(e).activation;
  const stamp=readFileSync(join(e.data,'backups','stack',act,'STAMP'),'utf8').replace(/\n+$/,'');
  const db=new DatabaseSync(e.store);db.exec('CREATE TABLE usage_records (seq INTEGER PRIMARY KEY)');db.close();
  const before=fp(e),n=calls(e).length,r=await run(e,'rollback','acme','--restore',act);
  assert.equal(r.code,3,r.out+r.err);assert.ok(r.err.endsWith(`stack-release: refusing restore-mismatch: cannot count the rows after ${stamp}\n`),r.err);
  assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);assert.equal(logLines(e).at(-1).code,'restore-mismatch');
 });
 await t.test('the in-run recount counts the listed tables too',async(t)=>{
  const e=await mk(t);await seed(e);
  assert.equal((await run(e,'activate',C,'acme','--migrate')).code,0);const act=pointer(e).activation;
  fault(e,'stop-writes-row','thread_opens');
  const r=await run(e,'rollback','acme','--restore',act);assert.equal(r.code,1,r.out+r.err);
  assert.equal(r.err,rolledBack('post-backup-events',C));
  assert.ok(r.out.includes('; 0 event(s) were written after the backup\n'),r.out);
  assert.deepEqual([pointer(e).copy,pointer(e).schema],[C,'3h']);assert.equal(posts(e).length,0);
  const l=logLines(e).at(-1);assert.deepEqual([l.result,l.code,l.rollback],['gate-failed','post-backup-events','ok']);
 });
});

test('T46 row 181 item 4: every table in the bus schema is in exactly one of four lists',()=>{
 // The schema a target copy's store gets. Lists 1 and 2 come from the script, so a table added to
 // COUNTED or dropped from it shows here. Row 181's BUILD.md names each writer.
 const db=new DatabaseSync(':memory:');db.exec(readFileSync(join(ROOT,'packages','bus','schema.sql'),'utf8'));
 const tables=db.prepare("SELECT name FROM sqlite_master WHERE type='table' ORDER BY name").all().map((r)=>r.name);
 const hasAt=(n)=>db.prepare(`SELECT count(*) AS n FROM pragma_table_info(?) WHERE name='at'`).get(n).n===1;
 const always={decisions:'decision.raise writes action.allowed in the same transaction'};
 const untimed={
  meta:'key and value only; its one UPDATE is the migration step',
  message_threads:'no time column; each row goes with a messages row, which is counted',
  sqlite_sequence:'SQLite\'s own AUTOINCREMENT table',
  task_comment_cursors:'no time column; a restore drops its advances uncounted (BUILD.md)',
 };
 const lists=[['events'],COUNTED,Object.keys(always),Object.keys(untimed)],all=lists.flat();
 assert.equal(new Set(all).size,all.length,`a table is in two lists: ${all.filter((n,i)=>all.indexOf(n)!==i)}`);
 assert.deepEqual(tables.filter((n)=>!all.includes(n)),[],'tables in no list');
 assert.deepEqual(all.filter((n)=>!tables.includes(n)),[],'listed tables the schema lacks');
 for(const n of lists.slice(0,3).flat())assert.ok(hasAt(n),`${n} has at`);
 for(const n of lists[3])assert.ok(!hasAt(n),`${n} has no at`);
 db.close();
});

// Row 185 (#1683): every activate with a store backs it up under its activation id, before any
// migration. Only a backup taken before a migration (TAKEN) is restored after a gate failure.
test('T47 row 185 test 1: a same-schema activate leaves a whole backup and the log line names it',async(t)=>{
 const e=await mk(t);await seed(e);const before=fp(e);
 const r=await run(e,'activate',C1,'acme');assert.equal(r.code,0,r.out+r.err);
 const act=pointer(e).activation,o=join(e.data,'backups','stack',act);
 assert.ok(r.out.includes(`backup: ${o}\n`),r.out);
 for(const f of ['SHA256SUMS','DATA_ROOT','SCHEMA','STAMP'])assert.ok(existsSync(join(o,f)),f);
 assert.equal(readFileSync(join(o,'DATA_ROOT'),'utf8'),`${e.data}\n`);
 assert.equal(readFileSync(join(o,'SCHEMA'),'utf8'),`${storeVersion(e.store,true)}\n`);assert.equal(storeVersion(e.store,true),'3g');
 assert.match(readFileSync(join(o,'STAMP'),'utf8'),/^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\d\.\d{3}Z\n$/);
 assert.equal(backupSum(e,act),before.store);
 const l=logLines(e).at(-1);assert.deepEqual([l.op,l.result,l.activation,l.backup],['activate','ok',act,act]);
});

test('T48 row 185 test 2: a gate failure on a same-schema activate rolls back without a restore',async(t)=>{
 const e=await mk(t);await seed(e);const before=fp(e);
 fault(e,`start-writes-row-${C1}`);fault(e,`healthz-${C1}`);
 const r=await run(e,'activate',C1,'acme','--timeout','3');assert.equal(r.code,1,r.out+r.err);
 assert.equal(r.err,rolledBack('healthz'));
 const l=logLines(e).at(-1),act=l.activation;
 assert.deepEqual([l.result,l.code,l.rollback,l.backup],['gate-failed','healthz','ok',act]);
 // The store as the target's bus left it when the rollback stopped it, after the failed gate.
 const failed=snaps(e).filter((x)=>x.ev==='stop').at(-1).files['bus.sqlite'][2];
 assert.notEqual(failed,backupSum(e,act),'the target start wrote a row after the backup');
 assert.equal(sha(e.store),failed);assert.equal(posts(e).length,0);
 assert.deepEqual({...fp(e),store:before.store},before);assert.equal(units(e)[BUS].wd,join(COPIES,B));
});

test('T49 row 185 test 3: a same-schema rollback --restore restores, or refuses rows written after STAMP',async(t)=>{
 await t.test('no rows after STAMP: restores and goes live',async(t)=>{
  const e=await mk(t);await seed(e);
  assert.equal((await run(e,'activate',C1,'acme')).code,0);const act=pointer(e).activation,storeC1=sha(e.store);
  const r=await run(e,'rollback','acme','--restore',act);assert.equal(r.code,0,r.out+r.err);
  assert.ok(r.out.startsWith(`restore: ${join(e.data,'backups','stack',act)}; the store now in place moves to `),r.out);
  assert.ok(r.out.includes('; 0 event(s) were written after the backup\n'),r.out);
  assert.deepEqual([pointer(e).copy,pointer(e).schema],[B,'3g']);assert.equal(sha(e.store),backupSum(e,act));
  assert.equal(posts(e).length,1);assert.equal(sha(join(e.data,posts(e)[0],'bus.sqlite')),storeC1);
  assert.equal(logLines(e).at(-1).backup,act);
 });
 await t.test('one instance_names row after STAMP refuses post-backup-events; --events 1 restores',async(t)=>{
  const e=await mk(t);await seed(e);
  assert.equal((await run(e,'activate',C1,'acme')).code,0);const act=pointer(e).activation;
  addRow(e.store,'instance_names');
  const before=fp(e),n=calls(e).length,no=await run(e,'rollback','acme','--restore',act);
  assert.equal(no.code,3,no.out+no.err);
  assert.equal(no.err,'stack-release: refusing post-backup-events: 0 event(s), 1 instance_names row(s) were written after the backup; Jason decides, then --events 1\n');
  assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);
  const r=await run(e,'rollback','acme','--restore',act,'--events','1');assert.equal(r.code,0,r.out+r.err);
  assert.deepEqual([pointer(e).copy,pointer(e).schema],[B,'3g']);assert.equal(sha(e.store),backupSum(e,act));
 });
});

test('T50 row 185 test 4: activate --plan prints the backup line and writes nothing',async(t)=>{
 const e=await mk(t);await seed(e);
 const before=fp(e),data=tree(e.data),n=calls(e).length,logs=logLines(e).length;
 const r=await run(e,'activate',C1,'acme','--plan');assert.equal(r.code,0,r.err);assert.equal(r.err,'');
 assert.deepEqual(r.out.split('\n').filter((x)=>x.startsWith('backup: ')),[planBackup(e)]);
 assert.deepEqual(fp(e),before);assert.deepEqual(tree(e.data),data);assert.deepEqual(startsStops(e,n),[]);assert.equal(logLines(e).length,logs);
 assert.ok(!existsSync(join(e.data,'backups')));
 // Rollback is unchanged: it takes no backup, so its plan has no backup line.
 assert.equal((await run(e,'activate',C1,'acme')).code,0);
 const rb=await run(e,'rollback','acme','--plan');assert.equal(rb.code,0,rb.err);
 assert.deepEqual(rb.out.split('\n').filter((x)=>x.startsWith('backup')),[]);
});

test('T51 row 185 test 5: an activate with no store file takes no backup',async(t)=>{
 const e=await mk(t);await seed(e);
 sysctl(e,'stop',BUS);for(const f of readdirSync(join(e.data,'bus')))rmSync(join(e.data,'bus',f));
 const p=await run(e,'activate',C1,'acme','--plan');assert.equal(p.code,0,p.err);
 assert.deepEqual(p.out.split('\n').filter((x)=>x.startsWith('backup')),['backup: none; there is no store file']);
 const r=await run(e,'activate',C1,'acme');assert.equal(r.code,0,r.out+r.err);
 assert.ok(!existsSync(join(e.data,'backups')));assert.ok(!r.out.includes('backup: '),r.out);
 const l=logLines(e).at(-1);assert.deepEqual([l.result,l.backup],['ok',null]);
});

// Row 186 (#1684): the activate plan prints the backup line only when the run reaches backup_store.
// Each case plans, checks nothing was written, then runs and checks a backup exists exactly when the plan said so.
test('T52 row 186: the activate plan\'s backup line says what the run will do',async(t)=>{
 const newer='migration: none possible; 3z is not in 3h\'s migration chain, so the run would roll back with store-newer';
 const cases=[
  ['same schema','3g',C1,[],'migration: none; the store is at the target\'s version',true,0],
  ['same schema with --migrate','3g',C1,['--migrate'],'migration: none; the store is at the target\'s version',true,0],
  ['in chain with --migrate','3g',C,['--migrate'],'needs: --migrate (given)',true,0],
  ['in chain without --migrate','3g',C,[],'needs: --migrate (not given; the run would roll back with migration-needs-flag)',false,1],
  ['outside the chain','3z',C,[],newer,false,1],
  ['outside the chain with --migrate','3z',C,['--migrate'],newer,false,1],
 ];
 for(const [name,store,to,flags,why,backup,code] of cases)await t.test(name,async(t)=>{
  const e=await mk(t);await seed(e,{store});
  const before=fp(e),data=tree(e.data),n=calls(e).length,logs=logLines(e).length;
  const p=await run(e,'activate',to,'acme','--plan',...flags);assert.equal(p.code,0,p.err);assert.equal(p.err,'');
  const out=p.out.split('\n');assert.ok(out.includes(why),p.out);
  assert.deepEqual(out.filter((x)=>x.startsWith('backup')),[backup?planBackup(e):planNoBackup]);
  assert.deepEqual(fp(e),before);assert.deepEqual(tree(e.data),data);assert.deepEqual(startsStops(e,n),[]);assert.equal(logLines(e).length,logs);
  assert.ok(!existsSync(join(e.data,'backups')));
  const r=await run(e,'activate',to,'acme',...flags,'--timeout','3');assert.equal(r.code,code,r.out+r.err);
  assert.equal(existsSync(join(e.data,'backups','stack')),backup);assert.equal(logLines(e).at(-1).backup??null,backup?logLines(e).at(-1).activation:null);
 });
});

// Row 178: proof metadata uses temp fixture files, never the installed slot.
async function seedProof(e) {
 await seed(e);
 const file=join(e.root,'proof.fixture');writeFileSync(file,'fixture_proxy_proof_012345678901234567890123456789',{mode:0o600});
 const extra=['--public-host','console.example','--auth-header','x-user','--allow-user','jason','--proof-header','x-console-proof','--proof-file',file];
 const p=pointer(e);p.console.push(...extra);writeFileSync(e.pointer,JSON.stringify(p)+'\n');
 const unit=join(e.units,CON);edit(unit,` --business acme\n`,` --business acme ${extra.join(' ')}\n`);
 return p.console;
}
test('T178 proxy proof header and path survive re-pin and rollback unchanged in the pointer and unit',async t=>{
 const e=await mk(t),expected=await seedProof(e);
 let r=await run(e,'activate',C1,'acme');assert.equal(r.code,0,r.out+r.err);
 assert.deepEqual(pointer(e).console,expected);assert.ok(consoleText(e).includes(expected.join(' ')));
 r=await run(e,'rollback','acme');assert.equal(r.code,0,r.out+r.err);
 assert.equal(pointer(e).copy,B);assert.deepEqual(pointer(e).console,expected);assert.ok(consoleText(e).includes(expected.join(' ')));
});
test('T178 proxy proof pair survives a tester-port replacement as well',async t=>{
 const e=await mk(t),expected=await seedProof(e);
 const r=await run(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);
 assert.deepEqual(pointer(e).console,[...expected,'--tester-port','7333']);
 assert.ok(consoleText(e).includes([...expected,'--tester-port','7333'].join(' ')));
});

// Row 187 (#1685): activate sets, carries and drops the proof pair. Every proof file here holds
// SENTINEL, which no output, unit, pointer, log or steps log may hold (brief test 8), and an
// inotify watch counts each open or read of it, which must stay 0: the script checks the file
// with lstat and stat only. Python's ctypes reaches inotify(7); node's fs.watch has no IN_ACCESS.
const SENTINEL='row187_sentinel_proof_value_0123456789abcdef';
const PREVIEW=['--public-host','console.example','--auth-header','x-user','--allow-user','jason'];
const WATCH=`import ctypes,os,select,struct,sys
libc=ctypes.CDLL(None,use_errno=True)
fd=libc.inotify_init1(0)
if fd<0 or libc.inotify_add_watch(fd,os.fsencode(sys.argv[1]),0x21)<0:sys.exit(2)
print('ready',flush=True)
n=0
def drain(t):
 global n
 while select.select([fd],[],[],t)[0]:
  b=os.read(fd,65536);i=0
  while i<len(b):n+=1;i+=16+struct.unpack_from('iIII',b,i)[3]
  t=0
while True:
 r=select.select([fd,0],[],[])[0]
 if fd in r:drain(0)
 if 0 in r and not os.read(0,1):break
drain(0)
print(n,flush=True)`;
// A subtest that fails before noLeak leaves its watches running; they end with the file.
const WATCHERS=new Set();
after(()=>{for(const ch of WATCHERS)ch.kill('SIGKILL')});
// A proof file under dir (e.root, outside the data root, unless given), with its read watch running.
async function proofFile(e,name='proof.187',mode=0o600,dir=e.root){
 const f=join(dir,name);writeFileSync(f,SENTINEL+'\n',{mode});chmodSync(f,mode);
 const ch=spawn('python3',['-I','-c',WATCH,f],{stdio:['pipe','pipe','inherit']});
 let out='';ch.stdout.on('data',(d)=>{out+=d});
 await new Promise((res,rej)=>{ch.stdout.on('data',()=>{if(out.startsWith('ready\n'))res()});ch.on('error',rej);ch.on('close',(c)=>rej(new Error(`inotify watch exited ${c}`)))});
 WATCHERS.add(ch);ch.on('close',()=>WATCHERS.delete(ch));
 (e.watches??=[]).push(async()=>{ch.stdin.end();if(ch.exitCode===null)await once(ch,'close');return Number(out.split('\n')[1])});
 return f;
}
async function prun(e,...args){const r=await run(e,...args);(e.outs??=[]).push(r.out,r.err);return r}
// Brief test 8 and the read mutant, at the end of each case.
async function noLeak(e){
 const hits=[];
 const walk=(q)=>{let st;try{st=lstatSync(q)}catch{return}if(st.isDirectory()){for(const n of readdirSync(q))walk(join(q,n))}else if(st.isFile()&&readFileSync(q).includes(SENTINEL))hits.push(q)};
 for(const d of [e.data,e.units,e.sd,e.bin])walk(d);
 (e.outs??[]).forEach((o,i)=>{if(o.includes(SENTINEL))hits.push(`run output ${i}`)});
 assert.deepEqual(hits,[]);
 for(const stop of e.watches??[])assert.equal(await stop(),0,'the run opened or read the proof file');
}
// The seeded stack with the preview flags, and any flags in more, in the pointer and the Console unit.
async function seedPreview(e,opts,more=[]){
 await seed(e,opts);
 const p=pointer(e);p.console.push(...PREVIEW,...more);writeFileSync(e.pointer,JSON.stringify(p)+'\n');
 edit(join(e.units,CON),' --business acme\n',` --business acme ${[...PREVIEW,...more].join(' ')}\n`);
 return p.console;
}
const pair=(f,h='x-console-proof')=>['--proof-header',h,'--proof-file',f];
const conExec=(e)=>consoleText(e).split('\n').find((l)=>l.startsWith('ExecStart='));
// --plan: exit code, nothing written, nothing started or stopped, no log line; the output lines.
async function planOnly(e,code,...args){
 const before=fp(e),data=tree(e.data),n=calls(e).length,logs=logLines(e).length;
 const r=await prun(e,...args,'--plan');assert.equal(r.code,code,r.out+r.err);assert.equal(r.err,'');
 assert.deepEqual(fp(e),before);assert.deepEqual(tree(e.data),data);assert.deepEqual(startsStops(e,n),[]);assert.equal(logLines(e).length,logs);
 return r.out.split('\n');
}
const proofLines=(out)=>out.filter((l)=>l.startsWith('proof:'));
const CARRY_MSG=(to)=>`${to}'s Console does not support --proof-header, which the pointer's Console flags carry; give --no-proof to drop the pair`;
const HEADER_MSG=(h)=>`--proof-header ${h} must be a header name of a-z, 0-9 and - (64 at most, lowercased) other than host, origin, x-mosaic-tester and the --auth-header value`;

test('T53 row 187: activate sets, carries and drops the proof pair',async(t)=>{
 await t.test('tests 1 and 9: the pair goes after the preview flags, before --send and the kept --tester-port, as the unit renders it; a new pair replaces it',async(t)=>{
  const e=await mk(t),base=await seedPreview(e,undefined,['--send']),f=await proofFile(e),g=await proofFile(e,'proof2.187',0o400);
  const pre=base.slice(0,-1);
  let r=await prun(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);
  const out=await planOnly(e,0,'activate',C1,'acme',...pair(f));
  assert.deepEqual(proofLines(out),[`proof: on, header x-console-proof, file ${f}`]);
  assert.ok(out.find((l)=>l.startsWith('Console: ')).endsWith(` ${PREVIEW.join(' ')} ${pair(f).join(' ')} --send --tester-port 7333`));
  r=await prun(e,'activate',C1,'acme',...pair(f));assert.equal(r.code,0,r.out+r.err);
  assert.deepEqual(pointer(e).console,[...pre,...pair(f),'--send','--tester-port','7333']);
  assert.ok(conExec(e).endsWith(` --checkout ${repo} ${[...pre,...pair(f),'--send','--tester-port','7333'].join(' ')}`),conExec(e));
  r=await prun(e,'status','acme');assert.equal(r.code,0,r.err);assert.match(r.out,/unit flags: match the pointer/);
  r=await prun(e,'activate',C1,'acme',...pair(g,'X-Proof-Two'));assert.equal(r.code,0,r.out+r.err);
  assert.deepEqual(pointer(e).console,[...pre,...pair(g,'X-Proof-Two'),'--send','--tester-port','7333']);
  r=await prun(e,'status','acme');assert.equal(r.code,0,r.err);assert.match(r.out,/unit flags: match the pointer/);
  assert.equal(conExec(e).match(/--proof-header/g).length,1);assert.ok(!conExec(e).includes(f));
  await noLeak(e);
 });
 await t.test('tests 2 and 3: an activate of the live copy writes the pair; a later activate and a rollback carry it',async(t)=>{
  const e=await mk(t),base=await seedPreview(e),f=await proofFile(e);
  let r=await prun(e,'activate',B,'acme',...pair(f));assert.equal(r.code,0,r.out+r.err);
  assert.equal(pointer(e).copy,B);assert.deepEqual(pointer(e).console,[...base,...pair(f)]);assert.ok(conExec(e).endsWith(pair(f).join(' ')));
  assert.deepEqual(proofLines(await planOnly(e,0,'activate',C1,'acme')),['proof: carried, header x-console-proof']);
  r=await prun(e,'activate',C1,'acme');assert.equal(r.code,0,r.out+r.err);
  assert.equal(pointer(e).copy,C1);assert.deepEqual(pointer(e).console,[...base,...pair(f)]);assert.ok(conExec(e).endsWith(pair(f).join(' ')));
  assert.deepEqual(proofLines(await planOnly(e,0,'rollback','acme')),['proof: carried, header x-console-proof']);
  r=await prun(e,'rollback','acme');assert.equal(r.code,0,r.out+r.err);
  assert.equal(pointer(e).copy,B);assert.deepEqual(pointer(e).console,[...base,...pair(f)]);assert.ok(conExec(e).endsWith(pair(f).join(' ')));
  await noLeak(e);
 });
 await t.test('test 2: only a pair change may name the live copy; the log keeps from and to, and rollback still goes to the earlier copy',async(t)=>{
  const e=await mk(t),base=await seedPreview(e),f=await proofFile(e);
  await refused(e,['activate',B,'acme'],'already-active',`${B} is the pointer's copy`);
  await refused(e,['activate',B,'acme','--no-proof'],'already-active',`${B} is the pointer's copy`);
  await refused(e,['activate',B,'acme','--tester-port','7333'],'already-active',`${B} is the pointer's copy`);
  let r=await prun(e,'activate',C1,'acme');assert.equal(r.code,0,r.out+r.err);
  r=await prun(e,'activate',C1,'acme',...pair(f));assert.equal(r.code,0,r.out+r.err);
  let l=logLines(e).at(-1);assert.deepEqual([l.op,l.from,l.to,l.result],['activate',C1,C1,'ok']);assert.ok(l.backup);
  assert.deepEqual(pointer(e).console,[...base,...pair(f)]);
  await refused(e,['activate',C1,'acme'],'already-active',`${C1} is the pointer's copy`);
  const out=await planOnly(e,0,'activate',C1,'acme','--no-proof');
  assert.deepEqual(proofLines(out),['proof: dropped; --no-proof drops header x-console-proof']);
  assert.ok(out.includes('commits: the run adds 0 (newest first, at most 200):'),out.join('\n'));
  r=await prun(e,'activate',C1,'acme','--no-proof');assert.equal(r.code,0,r.out+r.err);
  l=logLines(e).at(-1);assert.deepEqual([l.from,l.to,l.result],[C1,C1,'ok']);
  assert.equal(pointer(e).copy,C1);assert.deepEqual(pointer(e).console,base);assert.doesNotMatch(conExec(e),/--proof-/);
  r=await prun(e,'rollback','acme');assert.equal(r.code,0,r.out+r.err);assert.equal(pointer(e).copy,B);
  await noLeak(e);
 });
 await t.test('test 2: a live-copy activate says only the Console flags change, and backs up the stopped store before it installs',async(t)=>{
  const e=await mk(t),base=await seedPreview(e),f=await proofFile(e);
  const NOTE=`note: ${B} is the pointer's copy; the run re-pins it and only the Console flags change`;
  for(const args of [pair(f),['--no-proof']]){
   const out=await planOnly(e,0,'activate',B,'acme',...args);
   assert.deepEqual(out.filter((l)=>l.startsWith('note: ')),[NOTE]);assert.equal(out[out.indexOf(`to: ${B}`)+1],NOTE);
   assert.deepEqual(out.filter((l)=>l.startsWith('backup')),[planBackup(e)]);
   const sum=createHash('sha256').update(readFileSync(e.store)).digest('hex'),n=calls(e).length;
   const r=await prun(e,'activate',B,'acme',...args);assert.equal(r.code,0,r.out+r.err);
   const act=pointer(e).activation,l=logLines(e).at(-1);
   assert.deepEqual([l.from,l.to,l.result,l.backup],[B,B,'ok',act]);assert.equal(backupSum(e,act),sum);
   assert.deepEqual(startsStops(e,n),[`stop ${CON}`,`stop ${BUS}`,`start ${BUS}`,`start ${CON}`]);
   const steps=stepText(e),at=(x)=>steps.indexOf(x);
   assert.ok(at('stopped both units')>=0&&at('stopped both units')<at('backup: ')&&at('backup: ')<at(`installed `),steps);
   assert.deepEqual(pointer(e).console,args[0]==='--no-proof'?base:[...base,...pair(f)]);
  }
  assert.deepEqual(readdirSync(join(e.data,'backups','stack')).length,2);
  const out=await planOnly(e,0,'activate',C1,'acme');assert.deepEqual(out.filter((l)=>l.startsWith('note: ')),[]);
  await noLeak(e);
 });
 await t.test('test 3: pm-on keeps the pair',async(t)=>{
  const e=await mk(t),base=await seedPreview(e,{pm:true}),f=await proofFile(e);
  let r=await prun(e,'activate',C1,'acme','--pm-after-harness',...pair(f));assert.equal(r.code,0,r.out+r.err);
  biz(e,HARNESS);
  r=await prun(e,'pm-on','acme');assert.equal(r.code,0,r.out+r.err);
  assert.equal(pointer(e).pm,true);assert.deepEqual(pointer(e).console,[...base,...pair(f)]);assert.ok(conExec(e).endsWith(pair(f).join(' ')));
  await noLeak(e);
 });
 await t.test('test 4: --no-proof drops the pair from the pointer and the unit and says so; with no pair it says so and passes',async(t)=>{
  const e=await mk(t),base=await seedPreview(e),f=await proofFile(e);
  let r=await prun(e,'activate',B,'acme',...pair(f));assert.equal(r.code,0,r.out+r.err);
  assert.deepEqual(proofLines(await planOnly(e,0,'activate',C1,'acme','--no-proof')),['proof: dropped; --no-proof drops header x-console-proof']);
  r=await prun(e,'activate',C1,'acme','--no-proof');assert.equal(r.code,0,r.out+r.err);
  assert.deepEqual(pointer(e).console,base);assert.doesNotMatch(conExec(e),/--proof-/);
  assert.match(stepText(e),new RegExp(`drop --proof-header x-console-proof --proof-file ${f}; --no-proof was given\\n`));
  r=await prun(e,'status','acme');assert.equal(r.code,0,r.err);assert.match(r.out,/unit flags: match the pointer/);
  assert.deepEqual(proofLines(await planOnly(e,0,'activate',B,'acme','--no-proof')),['proof: off; --no-proof was given and the pointer holds no pair']);
  r=await prun(e,'activate',B,'acme','--no-proof');assert.equal(r.code,0,r.out+r.err);
  assert.deepEqual(pointer(e).console,base);assert.doesNotMatch(conExec(e),/--proof-/);
  assert.match(stepText(e),/--no-proof was given and the pointer holds no proof pair, so there is nothing to drop\n/);
  assert.deepEqual(proofLines(await planOnly(e,0,'activate',C1,'acme')),['proof: off']);
  await noLeak(e);
 });
 await t.test('test 5: each refusal exits 3 before anything stops',async(t)=>{
  const e=await mk(t);await seedPreview(e);
  const f=await proofFile(e),open=await proofFile(e,'open.187',0o644),loose=await proofFile(e,'loose.187',0o640);
  const link=join(e.root,'link.187');symlinkSync(f,link);
  const dir=join(e.root,'dir.187');mkdirSync(dir,{mode:0o700});
  const odd=join(e.root,'odd 187');writeFileSync(odd,SENTINEL+'\n',{mode:0o600});
  await refused(e,['activate',A,'acme',...pair(f)],'proof-target',`${A}'s Console does not support --proof-header`);
  for(const h of ['Host','origin','x-mosaic-tester','X-User','-lead','under_score','a'.repeat(65)]){
   await refused(e,['activate',C1,'acme',...pair(f,h)],'proof-header-invalid',HEADER_MSG(h));
  }
  const inCopies=join(COPIES,'proof-r187.187');writeFileSync(inCopies,SENTINEL+'\n',{mode:0o600});t.after(()=>rmSync(inCopies,{force:true}));
  await refused(e,['activate',C1,'acme',...pair(inCopies)],'proof-file-invalid',`--proof-file ${inCopies} is inside the repository or the copies`);
  rmSync(inCopies);
  for(const [p,why] of [['proof.187','is not an absolute path'],[odd,'holds a character outside [A-Za-z0-9/._+-]'],[link,'is a symlink'],[dir,'is not a regular file'],[join(e.root,'none.187'),'cannot be found'],[open,'has mode 644, not 600 or 400'],[loose,'has mode 640, not 600 or 400']]){
   await refused(e,['activate',C1,'acme',...pair(p)],'proof-file-invalid',`--proof-file ${p} ${why}`);
  }
  const g=await mk(t);await seed(g);const h=await proofFile(g);
  await refused(g,['activate',C1,'acme',...pair(h)],'proof-needs-preview','the proof pair needs --public-host, --auth-header and --allow-user in the Console flags; the run\'s flags lack --public-host --auth-header --allow-user');
  for(const x of [e,g])await noLeak(x);
 });
 await t.test('tests 5 and 9: --plan lists every proof refusal with the others and writes nothing',async(t)=>{
  const e=await mk(t);await seed(e);biz(e,HARNESS);const open=await proofFile(e,'open.187',0o644);
  const out=await planOnly(e,3,'activate',A,'acme',...pair(open,'host'));
  assert.deepEqual(proofLines(out),[`proof: on, header host, file ${open}`]);
  assert.deepEqual(out.filter((l)=>l.startsWith('refuses ')),[
   `refuses proof-target: ${A}'s Console does not support --proof-header`,
   'refuses proof-needs-preview: the proof pair needs --public-host, --auth-header and --allow-user in the Console flags; the run\'s flags lack --public-host --auth-header --allow-user',
   `refuses proof-header-invalid: ${HEADER_MSG('host')}`,
   `refuses proof-file-invalid: --proof-file ${open} has mode 644, not 600 or 400`,
   `refuses unknown-kind-for-target: the business file names plug-in kind(s) harness, which ${A} does not know`]);
  await noLeak(e);
 });
 await t.test('test 6: usage errors',async(t)=>{
  const e=await mk(t);await seedPreview(e);const f=await proofFile(e);
  const usageText=(await prun(e,'--help')).err,n=calls(e).length,logs=logLines(e).length,before=fp(e);
  for(const args of [['activate',C1,'acme','--proof-header','x-console-proof'],['activate',C1,'acme','--proof-file',f],['activate',C1,'acme','--proof-header','','--proof-file',f],
   ['activate',C1,'acme','--no-proof',...pair(f)],['activate',C1,'acme',...pair(f),'--no-proof'],['activate',C1,'acme','--no-proof','--proof-header','x-console-proof'],
   ['rollback','acme',...pair(f)],['rollback','acme','--no-proof'],['rollback','acme','--proof-header','x-console-proof'],['pm-on','acme',...pair(f)],['pm-on','acme','--no-proof'],['pm-on','acme','--proof-file',f],
   ['activate',C1,'acme','--plan','--proof-file',f]]){
   const r=await prun(e,...args);assert.equal(r.code,4,args.join(' '));assert.equal(r.out,'');assert.equal(r.err,usageText);
  }
  assert.match(usageText,/\[--proof-header NAME --proof-file PATH \| --no-proof\]/);
  assert.deepEqual(fp(e),before);assert.deepEqual(startsStops(e,n),[]);assert.equal(logLines(e).length,logs);
  await noLeak(e);
 });
 await t.test('test 7: a rollback to a copy without proof support drops the pair and says so',async(t)=>{
  const e=await mk(t),base=await seedPreview(e,{copy:A}),f=await proofFile(e);
  let r=await prun(e,'activate',B,'acme',...pair(f));assert.equal(r.code,0,r.out+r.err);
  const out=await planOnly(e,0,'rollback','acme');
  assert.deepEqual(proofLines(out),[`proof: dropped; ${A}'s Console does not support --proof-header, so the rollback drops header x-console-proof`]);
  assert.doesNotMatch(out.find((l)=>l.startsWith('Console: ')),/--proof-/);
  r=await prun(e,'rollback','acme');assert.equal(r.code,0,r.out+r.err);
  assert.equal(pointer(e).copy,A);assert.deepEqual(pointer(e).console,base);assert.doesNotMatch(conExec(e),/--proof-/);
  assert.match(stepText(e),new RegExp(`drop --proof-header x-console-proof --proof-file ${f}; the target Console does not support it\\n`));
  await noLeak(e);
 });
 await t.test('test 7: an activate to a copy without proof support refuses proof-target without --no-proof and passes with it',async(t)=>{
  const e=await mk(t),base=await seedPreview(e),f=await proofFile(e);
  let r=await prun(e,'activate',B,'acme',...pair(f));assert.equal(r.code,0,r.out+r.err);
  const out=await planOnly(e,3,'activate',A,'acme');
  assert.deepEqual(out.filter((l)=>l.startsWith('refuses ')),[`refuses proof-target: ${CARRY_MSG(A)}`]);
  await refused(e,['activate',A,'acme'],'proof-target',CARRY_MSG(A));
  assert.deepEqual(proofLines(await planOnly(e,0,'activate',A,'acme','--no-proof')),['proof: dropped; --no-proof drops header x-console-proof']);
  r=await prun(e,'activate',A,'acme','--no-proof');assert.equal(r.code,0,r.out+r.err);
  assert.equal(pointer(e).copy,A);assert.deepEqual(pointer(e).console,base);assert.doesNotMatch(conExec(e),/--proof-/);
  assert.match(stepText(e),/drop --proof-header x-console-proof [^\n]*; --no-proof was given\n/);
  await noLeak(e);
 });
});

// Row 188 (#1686, P19 409 and 410): the checks on a carried pair, and a proof file inside REPO.
// A file gone from its path keeps a hard link under e.root, so the inode and its read watch
// outlive the path: inotify sends IN_IGNORED, which the watch would count, when a watched inode goes.
const carried=['proof: carried, header x-console-proof'];
test('T54 row 188: a carried pair gets the proof file checks, and a proof file inside the repository refuses',async(t)=>{
 const changes=[
  ['chmod 644',(e,f)=>{chmodSync(f,0o644);return 'has mode 644, not 600 or 400'}],
  ['a symlink to a mode-600 file',async(e,f)=>{const g=await proofFile(e,'swap.188');linkSync(f,join(e.root,'kept.188'));rmSync(f);symlinkSync(g,f);return 'is a symlink'}],
  ['removal',(e,f)=>{linkSync(f,join(e.root,'kept.188'));rmSync(f);return 'cannot be found'}],
 ];
 for(const [name,change] of changes){
  await t.test(`test 1: an activate that carries the pair refuses after ${name}, in the plan and the run, before anything stops`,async(t)=>{
   const e=await mk(t),base=await seedPreview(e),f=await proofFile(e);
   const r=await prun(e,'activate',B,'acme',...pair(f));assert.equal(r.code,0,r.out+r.err);
   const why=`--proof-file ${f} ${await change(e,f)}`;
   const out=await planOnly(e,3,'activate',C1,'acme');
   assert.deepEqual(proofLines(out),carried);assert.deepEqual(out.filter((l)=>l.startsWith('refuses ')),[`refuses proof-file-invalid: ${why}`]);
   await refused(e,['activate',C1,'acme'],'proof-file-invalid',why);
   assert.equal(pointer(e).copy,B);assert.deepEqual(pointer(e).console,[...base,...pair(f)]);
   await noLeak(e);
  });
 }
 await t.test('test 2: a rollback that carries the pair refuses after chmod 644, in the plan and the run, before anything stops',async(t)=>{
  const e=await mk(t),base=await seedPreview(e),f=await proofFile(e);
  const r=await prun(e,'activate',C1,'acme',...pair(f));assert.equal(r.code,0,r.out+r.err);
  chmodSync(f,0o644);const why=`--proof-file ${f} has mode 644, not 600 or 400`;
  const out=await planOnly(e,3,'rollback','acme');
  assert.ok(out.includes(`to: ${B}`),out.join('\n'));
  assert.deepEqual(proofLines(out),carried);assert.deepEqual(out.filter((l)=>l.startsWith('refuses ')),[`refuses proof-file-invalid: ${why}`]);
  await refused(e,['rollback','acme'],'proof-file-invalid',why);
  assert.equal(pointer(e).copy,C1);assert.deepEqual(pointer(e).console,[...base,...pair(f)]);
  await noLeak(e);
 });
 // Tests 3 and 4: a mode-600 file of this uid, so only the realpath check can refuse it.
 const inRepo=async(t,e,dir)=>{t.after(()=>rmSync(dir,{recursive:true,force:true}));mkdirSync(dir);return proofFile(e,'proof.188',0o600,dir)};
 await t.test('test 3: a proof file inside the repository refuses, in the plan and the run, before anything stops',async(t)=>{
  const e=await mk(t);await seedPreview(e);const f=await inRepo(t,e,join(repo,'proof-r188'));
  const why=`--proof-file ${f} is inside the repository or the copies`;
  const out=await planOnly(e,3,'activate',C1,'acme',...pair(f));
  assert.deepEqual(out.filter((l)=>l.startsWith('refuses ')),[`refuses proof-file-invalid: ${why}`]);
  await refused(e,['activate',C1,'acme',...pair(f)],'proof-file-invalid',why);
  await noLeak(e);
 });
 await t.test('test 4: a path outside the repository through a directory symlink into it refuses on its realpath',async(t)=>{
  const e=await mk(t);await seedPreview(e);await inRepo(t,e,join(repo,'proof-r188'));
  const link=join(e.root,'repo-link.188');symlinkSync(join(repo,'proof-r188'),link);
  const f=join(link,'proof.188');assert.ok(!lstatSync(f).isSymbolicLink());assert.ok(!f.startsWith(`${repo}/`));
  const why=`--proof-file ${f} is inside the repository or the copies`;
  const out=await planOnly(e,3,'activate',C1,'acme',...pair(f));
  assert.deepEqual(out.filter((l)=>l.startsWith('refuses ')),[`refuses proof-file-invalid: ${why}`]);
  await refused(e,['activate',C1,'acme',...pair(f)],'proof-file-invalid',why);
  await noLeak(e);
 });
});

// --- rehearse (D2, row 163; the brief's "Stack rehearsal on a scratch root") ---
// Copies of their own in RCOPIES: the real scripts/mosaic, config loader, business loader, roles and
// mosaic-config.mjs, with stand-ins for the bus host (cli.mjs), the Console, the Store and
// migrate-schema.mjs. A rehearsal starts its processes with only HOME, PATH and MOSAIC_CONFIG, so
// the stand-ins take their faults from $HOME/faults and record what they did in $HOME.

// The bus host. bus start writes the store's writer.lock, a meta row in the store, and its state
// beside the scratch store, and prints the host-up line; without --no-launch it starts the PM, which here means a line in
// $HOME/starts.log and a sessions.json. bus status --json answers from that state.
function rHost(){
 const fs=process.getBuiltinModule('node:fs'),path=process.getBuiltinModule('node:path');
 const id=path.basename(path.resolve(import.meta.dirname,'..','..','..')),home=process.env.HOME,a=process.argv.slice(2);
 const fault=(n)=>fs.existsSync(path.join(home,'faults',n));
 const alive=(pid)=>{try{const s=fs.readFileSync(`/proc/${pid}/stat`,'utf8');return s[s.lastIndexOf(')')+2]!=='Z'}catch{return false}};
 const data=JSON.parse(fs.readFileSync(process.env.MOSAIC_CONFIG,'utf8')).dataRoot,state=path.join(data,'fixture-host.json');
 const flags=["--pm","--no-launch"];
 if(a.join(' ')==='bus status --json'){
  if(fault(`status-${id}`))process.exit(1);
  let s={host:null,boot:null};try{s=JSON.parse(fs.readFileSync(state,'utf8'));s.host.live=alive(s.host.pid)}catch{}
  if(fault('status-other-host')&&s.host)s.host.pid=process.ppid;
  console.log(JSON.stringify(s));process.exit(0);
 }
 if(a[0]!=='bus'||a[1]!=='start'||!a.slice(3).every((f)=>flags.includes(f))){console.error(`fixture host: ${a.join(' ')}`);process.exit(4)}
 fs.appendFileSync(path.join(home,'host-args.log'),`${a.join(' ')}\n`);
 if(fault(`host-fails-${id}`)){console.error('fixture host: refused');process.exit(1)}
 const b=a[2],off=a.includes('--no-launch'),lock=path.join(data,'bus','writer.lock'),at=new Date().toISOString();
 fs.writeFileSync(lock,String(process.pid),{flag:'wx'});
 const db=new (process.getBuiltinModule('node:sqlite').DatabaseSync)(path.join(data,'bus','bus.sqlite'));
 db.prepare("INSERT OR REPLACE INTO meta(key,value) VALUES('fixture_host_start',?)").run(at);db.close();
 fs.writeFileSync(state,JSON.stringify({host:{business:b,pid:process.pid,live:true,startedAt:at,notifier:'off'},boot:{ok:true,business:b,at}}));
 if(fault('host-launches-dir'))fs.mkdirSync(path.join(data,'launches'));
 // host-touches lists files a careless host would write: the live config, business file or backup.
 if(fault('host-touches'))for(const f of fs.readFileSync(path.join(home,'faults','host-touches'),'utf8').split('\n').filter(Boolean))fs.appendFileSync(f,'x');
 if(!off||fault('host-launches')){
  fs.appendFileSync(path.join(home,'starts.log'),`pm-${b}\n`);
  fs.mkdirSync(path.join(data,'bus-host'),{recursive:true});
  fs.writeFileSync(path.join(data,'bus-host','sessions.json'),JSON.stringify({sessionsVersion:1,sessions:[{pid:process.pid}]}));
 }
 console.log(`bus host up: business ${b}, socket ${path.join(data,'bus','broker.sock')}, notifier off${off?', launches disabled':''}`);
 process.on('SIGTERM',()=>{if(fault('host-ignores-term'))return;if(!fault('host-keeps-lock'))fs.rmSync(lock,{force:true});process.exit(0)});
 setInterval(()=>{},1<<30);
}

// The Console: serve on the given loopback port; /healthz answers 200 unless healthz-<copy> is set.
function rConsole(){
 const fs=process.getBuiltinModule('node:fs'),path=process.getBuiltinModule('node:path'),http=process.getBuiltinModule('node:http');
 const id=path.basename(path.resolve(import.meta.dirname,'..','..','..')),home=process.env.HOME,a=process.argv.slice(2);
 const fault=(n)=>fs.existsSync(path.join(home,'faults',n));
 fs.appendFileSync(path.join(home,'console-args.log'),`${a.join(' ')}\n`);
 if(a[0]!=='serve'){console.error('fixture Console: refused');process.exit(1)}
 const s=http.createServer((q,r)=>{r.writeHead(q.url==='/healthz'&&!fault(`healthz-${id}`)?200:500);r.end()});
 s.listen(Number(a[a.indexOf('--port')+1]),'127.0.0.1',()=>console.log(`Mosaic Console: http://127.0.0.1:${s.address().port}/\nBoard: fixture`));
 process.on('SIGTERM',()=>process.exit(0));
}

// migrate-schema.mjs: sets its copy's SCHEMA_VERSION, or exit 1 under migrate-fails.
function rMigrate(){
 const fs=process.getBuiltinModule('node:fs'),path=process.getBuiltinModule('node:path'),{DatabaseSync}=process.getBuiltinModule('node:sqlite');
 const home=process.env.HOME,data=process.argv[2];
 const v=/^export const SCHEMA_VERSION = '([A-Za-z0-9]+)';$/m.exec(fs.readFileSync(path.join(import.meta.dirname,'store.mjs'),'utf8'))[1];
 fs.appendFileSync(path.join(home,'migrate.log'),`${data}\n`);
 if(fs.existsSync(path.join(home,'faults','migrate-fails'))){console.error('fixture migrate: failed');process.exit(1)}
 const db=new DatabaseSync(path.join(data,'bus','bus.sqlite'));db.prepare("UPDATE meta SET value=? WHERE key='schema_version'").run(v);db.close();
 console.log(`bus schema ${v} ready`);
}

// The copy's Store: refuses a store at another version with schema-mismatch, as the real one does.
const rStore=(v,froms)=>`${storeText(v,froms)}import {DatabaseSync} from 'node:sqlite';
import {join} from 'node:path';
export class Store {
  constructor(root) {
    this.db = new DatabaseSync(join(root, 'bus', 'bus.sqlite'));
    if (this.db.prepare("SELECT value FROM meta WHERE key='schema_version'").get()?.value !== SCHEMA_VERSION) { this.db.close(); throw Error('schema-mismatch'); }
  }
  get(sql, ...args) { return this.db.prepare(sql).get(...args); }
  close() { this.db.close(); }
}
`;

// B (3g) and C (3h) have --no-launch. A is a copy from before row 163, whose host has no such flag.
// C1's scripts/mosaic runs B's host, as a copy-check failure needs.
const RCOPIES=join(base,'rcopies');mkdirSync(RCOPIES);
for(const [id,v,froms] of [[B,'3g',['3f']],[C,'3h',['3f','3g']],[A,'3g',['3f']],[C1,'3g',['3f']]]){
 const d=join(RCOPIES,id);
 for(const p of ['scripts/mosaic','scripts/mosaic-config.mjs','packages/cli/src/config.mjs','packages/cli/src/errors.mjs','packages/bus/src/business.mjs','packages/plugins/src/kinds.mjs','packages/business/src','roles'])cpSync(join(repo,p),join(d,p),{recursive:true});
 if(id===C1)writeFileSync(join(d,'scripts','mosaic'),`#!/usr/bin/env bash\nexec node "${join(RCOPIES,B,'packages','cli','src','cli.mjs')}" "$@"\n`,{mode:0o755});
 for(const [f,text] of [['packages/cli/src/cli.mjs',id===A?'// fixture host from before row 163\nprocess.exit(1);\n':script(rHost)],['packages/webui/src/cli.mjs',script(rConsole)],['packages/bus/src/store.mjs',rStore(v,froms)],['packages/bus/src/migrate-schema.mjs',script(rMigrate)],['packages/bus/src/broker.mjs','export class BusError extends Error { constructor(code) { super(code); this.code = code; } }\n']]){mkdirSync(dirname(join(d,f)),{recursive:true});writeFileSync(join(d,f),text)}
 execFileSync('chmod',['-R','a-w',d]);
}

const TESTER='7499';
const freePort=async()=>{const s=createServer();s.listen(0,'127.0.0.1');await once(s,'listening');const p=String(s.address().port);await new Promise((r)=>s.close(r));return p};
const rh=(e,...p)=>join(e.env.HOME,...p);
const rfault=(e,name)=>{mkdirSync(rh(e,'faults'),{recursive:true});writeFileSync(rh(e,'faults',name),'')};

// A root for one rehearsal: a stopped live store at `store`, a pointer by hand on `copy` with the
// Console on e.port and the tester listener on TESTER, and a backup as backup_store writes one.
// A rehearsal's leftovers, found by their scratch MOSAIC_CONFIG, are killed after the test.
async function rmk(t,{copy=B,store='3g'}={}){
 const e=await mk(t);
 t.after(()=>{
  for(const pid of readdirSync('/proc').filter((n)=>/^\d+$/.test(n)))
   try{if(readFileSync(`/proc/${pid}/environ`,'utf8').includes(`MOSAIC_CONFIG=${e.data}/rehearsals/`))process.kill(Number(pid),'SIGKILL')}catch{}
 });
 const db=new DatabaseSync(e.store);
 db.exec('PRAGMA journal_mode=WAL');
 db.exec('CREATE TABLE meta (key TEXT PRIMARY KEY, value TEXT NOT NULL)');
 db.exec('CREATE TABLE events (id INTEGER PRIMARY KEY, at TEXT NOT NULL)');
 db.prepare("INSERT INTO meta VALUES ('schema_version', ?)").run(store);
 for(let i=0;i<3;i++)db.prepare('INSERT INTO events (at) VALUES (?)').run(`2000-01-01T00:00:0${i}.000Z`);
 db.close();
 mkdirSync(e.state,{recursive:true});
 writeFileSync(e.pointer,JSON.stringify({copy,business:'acme',pm:true,claude:e.claude,console:['--port',e.port,'--business','acme','--tester-port',TESTER],schema:store,activation:'manual',at:'2026-10-20T00:00:00Z'})+'\n');
 e.act=`20261020T000000Z-${copy.slice(0,12)}`;e.backup=join(e.data,'backups','stack',e.act);
 mkdirSync(join(e.backup,'bus'),{recursive:true,mode:0o700});
 cpSync(e.store,join(e.backup,'bus','bus.sqlite'));
 writeFileSync(join(e.backup,'SHA256SUMS'),`${sha(e.store)}  bus.sqlite\n`);
 for(const [f,text] of [['DATA_ROOT',e.data],['SCHEMA',store],['STAMP','2026-10-20T00:00:00.000Z']])writeFileSync(join(e.backup,f),`${text}\n`);
 e.biz=join(dirname(e.cfg),'businesses','acme.json');
 return e;
}

// What a rehearsal may never change: the live store, config, business file, pointer and log, and
// the backup, by sha256 of every file.
const untouched=(e)=>JSON.stringify([...[e.store,e.cfg,e.biz,e.pointer].map((f)=>[f,sha(f)]),existsSync(e.log),...readdirSync(e.backup,{recursive:true}).sort().map((f)=>join(e.backup,f)).filter((f)=>statSync(f).isFile()).map((f)=>[f,sha(f)])]);

async function rehearse(e,id,...args){
 const ch=spawn('bash',[e.sr??SR,'rehearse',id,'acme',...args,'--copies',RCOPIES,'--bin',e.bin],{env:e.env,stdio:['ignore','pipe','pipe']});
 let out='',err='';ch.stdout.on('data',(d)=>{out+=d});ch.stderr.on('data',(d)=>{err+=d});
 e.during?.(ch);
 const timer=setTimeout(()=>ch.kill('SIGKILL'),120000);
 const [code]=await once(ch,'close');clearTimeout(timer);
 const m=/\nrehearsal directory: (.*)\n$/.exec(out);
 return {code,out,err,dir:m?m[1]:null,names:out.split('\n').filter((l)=>/^(PASS|FAIL) /.test(l)).map((l)=>l.replace(/^(PASS|FAIL) ([^:]*).*/,'$1 $2'))};
}
// A script of its own whose text has `from` replaced, for the guard tests. The replacement is a
// function so a shell "$$" in `to` stays as written.
function ownScript(e,from,to){
 const own=join(e.root,'repo');cpSync(repo,own,{recursive:true});
 e.sr=join(own,'scripts','stack-release.sh');
 const s=readFileSync(e.sr,'utf8');assert.ok(s.includes(from),`${e.sr} has no ${from}`);writeFileSync(e.sr,s.replace(from,()=>to));
}
const rDirs=(e)=>existsSync(join(e.data,'rehearsals'))?readdirSync(join(e.data,'rehearsals')):[];
const PRE=['PASS copy','PASS port','PASS backup','PASS scratch-root','PASS data-root-live','PASS sessions-live','PASS data-root-scratch','PASS notify-off','PASS tracker-configured','PASS credential-ref-live'];
const POST=['PASS console-stopped','PASS host-stopped','PASS host-released-store','PASS backup-unchanged','PASS live-config-unchanged'];

test('R1 rehearse passes on the same schema; the scratch root holds its files and the live files stay byte-identical',async(t)=>{
 const e=await rmk(t),before=untouched(e),port=await freePort();
 const r=await rehearse(e,B,'--backup',e.act,'--port',port,'--timeout','10');
 assert.equal(r.code,0,r.out+r.err);
 assert.deepEqual(r.names,[...PRE,'PASS migration','PASS gate','PASS no-session',...POST]);
 assert.ok(r.out.endsWith(`REHEARSAL_PASS\nrehearsal directory: ${r.dir}\n`),r.out);
 assert.equal(r.err,'');
 assert.equal(untouched(e),before);
 const R=r.dir;assert.equal(dirname(R),join(e.data,'rehearsals'));assert.match(basename(R),new RegExp(`^\\d{8}T\\d{6}Z-${B.slice(0,12)}$`));
 for(const d of [dirname(R),R,join(R,'placeholders'),join(R,'config')])assert.equal(statSync(d).mode&0o777,0o700,d);
 for(const f of ['steps.log','backup.before','live.before','business.diff','host.log','console.log','config/config.json','data/bus/bus.sqlite'])assert.ok(existsSync(join(R,f)),f);
 // The host wrote the scratch store, a copy: the backup has no such row.
 const metaOf=(f)=>{const db=new DatabaseSync(f,{readOnly:true});try{return db.prepare("SELECT value FROM meta WHERE key='fixture_host_start'").get()?.value}finally{db.close()}};
 assert.match(metaOf(join(R,'data','bus','bus.sqlite')),/^\d{4}-/);assert.equal(metaOf(join(e.backup,'bus','bus.sqlite')),undefined);
 // The scratch config differs from the live one only in dataRoot.
 assert.deepEqual(JSON.parse(readFileSync(join(R,'config','config.json'),'utf8')),{...JSON.parse(readFileSync(e.cfg,'utf8')),dataRoot:join(R,'data')});
 // The notifier config: binding null at 0600.
 const nf=join(R,'data','notify','acme','notify.json');
 assert.deepEqual(JSON.parse(readFileSync(nf,'utf8')),{notifyVersion:1,binding:null});assert.equal(statSync(nf).mode&0o777,0o600);
 // The scratch business: no tracker.* variable, and every reference a 0600 placeholder with its date kept.
 const live=JSON.parse(readFileSync(e.biz,'utf8')),sb=JSON.parse(readFileSync(join(R,'config','businesses','acme.json'),'utf8'));
 assert.ok(Object.keys(live.vars).some((k)=>k.startsWith('tracker.')));
 assert.deepEqual(Object.keys(sb.vars).filter((k)=>k.startsWith('tracker.')),[]);
 const refs=[...Object.entries(sb.roles).flatMap(([n,r])=>Object.entries(r.credentials??{}).map(([s,ref])=>[`${n}-${s}`,ref,live.roles[n].credentials[s]])),...Object.entries(sb.tracker.sync.credentials).map(([s,ref])=>[`@sync-${s}`,ref,live.tracker.sync.credentials[s]])];
 assert.ok(refs.length>=2);
 for(const [name,ref,old] of refs){
  const f=join(R,'placeholders',name);
  assert.deepEqual(ref,{...old,file:f});assert.equal(readFileSync(f,'utf8'),'rehearsal-placeholder-token');assert.equal(statSync(f).mode&0o777,0o600);
 }
 assert.deepEqual(readdirSync(join(R,'placeholders')).sort(),refs.map(([n])=>n).sort());
 // Everything else in the business is as it was.
 const strip=(b)=>{const c=structuredClone(b);for(const k of Object.keys(c.vars))if(k.startsWith('tracker.'))delete c.vars[k];for(const r of Object.values(c.roles))delete r.credentials;delete c.tracker.sync.credentials;return c};
 assert.deepEqual(strip(sb),strip(live));
 const diff=readFileSync(join(R,'business.diff'),'utf8');assert.match(diff,/^-.*"tracker\.baseUrl"/m);assert.match(diff,/^\+.*placeholders\/pm-/m);
 // The host ran with launches disabled and started no PM; the Console got no --send.
 assert.deepEqual(lines(rh(e,'host-args.log')),['bus start acme --no-launch']);
 assert.deepEqual(lines(rh(e,'console-args.log')),[`serve --port ${port} --business acme`]);
 assert.equal(existsSync(rh(e,'starts.log')),false);
 assert.equal(existsSync(join(R,'data','bus','writer.lock')),false);
 assert.deepEqual(lines(join(R,'steps.log')).map((l)=>l.replace(/^\S+ /,'')),r.out.split('\n').filter((l)=>/^(PASS|FAIL) |^REHEARSAL_/.test(l)));
});

test('R2 rehearse runs the migration checks when the schema differs; the live store stays at 3g',async(t)=>{
 const e=await rmk(t),before=untouched(e),port=await freePort();
 const r=await rehearse(e,C,'--backup',e.backup,'--port',port,'--timeout','10');
 assert.equal(r.code,0,r.out+r.err);
 assert.deepEqual(r.names,[...PRE,'PASS new-refuses-old-store','PASS migrate','PASS new-opens-migrated','PASS migrate-again','PASS old-refuses-migrated','PASS gate','PASS no-session',...POST]);
 assert.ok(r.out.includes('PASS migrate: 3g to 3h\n'),r.out);
 assert.equal(untouched(e),before);assert.equal(storeVersion(e.store,false),'3g');
 assert.equal(storeVersion(join(r.dir,'data','bus','bus.sqlite'),false),'3h');
 assert.equal(storeVersion(join(r.dir,'refuse','bus','bus.sqlite'),false),'3g');
 assert.deepEqual(lines(rh(e,'migrate.log')),[join(r.dir,'data'),join(r.dir,'data')]);
});

test('R3 a failing migration gives REHEARSAL_FAIL migrate and starts nothing',async(t)=>{
 const e=await rmk(t),before=untouched(e);rfault(e,'migrate-fails');
 const r=await rehearse(e,C,'--backup',e.act,'--port',await freePort(),'--timeout','3');
 assert.equal(r.code,1,r.out+r.err);
 assert.deepEqual(r.names,[...PRE,'PASS new-refuses-old-store','FAIL migrate','PASS backup-unchanged','PASS live-config-unchanged']);
 assert.ok(r.out.includes('FAIL migrate: migrate-schema.mjs exit 1: fixture migrate: failed\n'),r.out);
 assert.ok(r.out.endsWith(`REHEARSAL_FAIL\nrehearsal directory: ${r.dir}\n`),r.out);
 assert.equal(existsSync(rh(e,'host-args.log')),false);assert.equal(existsSync(rh(e,'console-args.log')),false);
 assert.equal(untouched(e),before);
});

test('R4 a host that does not start, does not answer status, reports another pid, launches anyway, makes a launches directory or keeps its lock each fails by name',async(t)=>{
 for(const [f,name,why] of [[`host-fails-${B}`,'host-up','exited'],[`status-${B}`,'bus-status','bus status failed'],['status-other-host','bus-status','the host this run started'],['host-launches','no-session','bus-host/sessions.json'],['host-launches-dir','no-session','found launches under'],['host-keeps-lock','host-released-store','writer.lock is still there']]){
  const e=await rmk(t),before=untouched(e);rfault(e,f);
  const r=await rehearse(e,B,'--backup',e.act,'--port',await freePort(),'--timeout','3');
  assert.equal(r.code,1,f+r.out+r.err);
  assert.ok(r.names.includes(`FAIL ${name}`),f+r.out);assert.equal(r.names.filter((n)=>n.startsWith('FAIL')).length,1,f+r.out);
  assert.ok(r.out.split('\n').some((l)=>l.startsWith(`FAIL ${name}: `)&&l.includes(why)),f+r.out);
  assert.ok(r.names.includes('PASS console-stopped')&&r.names.includes('PASS backup-unchanged'),f+r.out);
  assert.ok(r.out.endsWith(`REHEARSAL_FAIL\nrehearsal directory: ${r.dir}\n`),r.out);
  assert.equal(untouched(e),before);
 }
});

test('R5 a host that ignores SIGTERM gets SIGKILL and FAIL host-stopped',async(t)=>{
 const e=await rmk(t);rfault(e,'host-ignores-term');
 const r=await rehearse(e,B,'--backup',e.act,'--port',await freePort(),'--timeout','2');
 assert.equal(r.code,1,r.out+r.err);
 assert.ok(/^FAIL host-stopped: pid \d+ was still running 2s after SIGTERM; sent SIGKILL$/m.test(r.out),r.out);
});

test('R6 a Console that does not answer /healthz gives REHEARSAL_FAIL healthz',async(t)=>{
 const e=await rmk(t);rfault(e,`healthz-${B}`);
 const r=await rehearse(e,B,'--backup',e.act,'--port',await freePort(),'--timeout','3');
 assert.equal(r.code,1,r.out+r.err);
 assert.ok(r.out.includes('FAIL healthz: no answer within 3s\n'),r.out);
 assert.deepEqual(r.names.filter((n)=>n.startsWith('FAIL')),['FAIL healthz']);
});

test('R7 a host on another copy fails copy-match',async(t)=>{
 const e=await rmk(t);
 const r=await rehearse(e,C1,'--backup',e.act,'--port',await freePort(),'--timeout','3');
 assert.equal(r.code,1,r.out+r.err);
 assert.ok(r.out.includes(`FAIL copy-match: the host's command line is not ${join(RCOPIES,C1)}'s cli.mjs bus start acme --no-launch\n`),r.out);
});

test('R8 a scratch port in use or reserved refuses, and the rehearsal takes no other port',async(t)=>{
 const e=await rmk(t),before=untouched(e);
 const held=createServer();held.listen(0,'127.0.0.1');await once(held,'listening');t.after(()=>held.close());
 const p=String(held.address().port);
 const r=await rehearse(e,B,'--backup',e.act,'--port',p);
 assert.equal(r.code,1,r.out+r.err);
 assert.equal(r.out,`PASS copy: ${B}, schema 3g\nFAIL port-in-use: 127.0.0.1:${p} is in use; the rehearsal takes no other port\nREHEARSAL_FAIL\n`);
 for(const q of ['7332','7333',e.port,TESTER]){
  const s=await rehearse(e,B,'--backup',e.act,'--port',q);
  assert.equal(s.code,1,s.out+s.err);
  assert.equal(s.out,`PASS copy: ${B}, schema 3g\nFAIL port-reserved: --port ${q} is a live Console port (7332, 7333 and the pointer's: ${e.port} ${TESTER})\nREHEARSAL_FAIL\n`);
 }
 assert.deepEqual(rDirs(e),[]);assert.equal(existsSync(rh(e,'host-args.log')),false);assert.equal(existsSync(rh(e,'console-args.log')),false);
 assert.equal(untouched(e),before);
});

test('R9 mos-0963: a role reference left outside placeholders/, or left on an env variable, fails credential-ref-live before the host starts',async(t)=>{
 const e=await rmk(t);
 // The live pm gitea reference names a file that is there, as a live token would be.
 const tok=join(e.root,'live-gitea.token');writeFileSync(tok,'live-token-value',{mode:0o600});
 const b=JSON.parse(readFileSync(e.biz,'utf8'));b.roles.pm.credentials.gitea.file=tok;writeFileSync(e.biz,JSON.stringify(b,null,2)+'\n',{mode:0o600});
 const before=untouched(e);
 ownScript(e,'for(const [name,r] of Object.entries(b.roles??{})){strip(r?.vars);swap(name,r?.credentials)}','for(const [name,r] of Object.entries(b.roles??{})){strip(r?.vars);if(name!=="pm")swap(name,r?.credentials)}');
 const r=await rehearse(e,B,'--backup',e.act,'--port',await freePort(),'--timeout','3');
 assert.equal(r.code,1,r.out+r.err);
 assert.ok(r.out.includes(`FAIL credential-ref-live: pm gitea is ${tok}, not a file in ${join(r.dir,'placeholders')}\n`),r.out);
 assert.deepEqual(r.names.slice(-3),['FAIL credential-ref-live','PASS backup-unchanged','PASS live-config-unchanged']);
 assert.equal(existsSync(rh(e,'host-args.log')),false);assert.equal(existsSync(rh(e,'console-args.log')),false);
 assert.equal(untouched(e),before);
 // An env reference names no file at all; the guard says which variable it is.
 const f=await rmk(t);
 const fb=JSON.parse(readFileSync(f.biz,'utf8'));const {file,...rest}=fb.roles.pm.credentials.gitea;fb.roles.pm.credentials.gitea={...rest,env:'REHEARSAL_GITEA_TOKEN'};writeFileSync(f.biz,JSON.stringify(fb,null,2)+'\n',{mode:0o600});
 ownScript(f,'for(const [name,r] of Object.entries(b.roles??{})){strip(r?.vars);swap(name,r?.credentials)}','for(const [name,r] of Object.entries(b.roles??{})){strip(r?.vars);if(name!=="pm")swap(name,r?.credentials)}');
 const s=await rehearse(f,B,'--backup',f.act,'--port',await freePort(),'--timeout','3');
 assert.equal(s.code,1,s.out+s.err);
 assert.ok(s.out.includes('FAIL credential-ref-live: pm gitea is env REHEARSAL_GITEA_TOKEN\n'),s.out);
 assert.equal(existsSync(rh(f,'host-args.log')),false);
});

test('R10 mos-0962: a scratch business that still sets a tracker fails tracker-configured',async(t)=>{
 const e=await rmk(t);
 const proj=join(e.root,'project');mkdirSync(join(proj,'.mosaic'),{recursive:true});
 writeFileSync(join(proj,'.mosaic','project.json'),JSON.stringify({projectVersion:1,id:'stack',vars:{'tracker.project':7}}),{mode:0o600});
 const b=JSON.parse(readFileSync(e.biz,'utf8'));b.projects.stack.root=proj;writeFileSync(e.biz,JSON.stringify(b,null,2)+'\n',{mode:0o600});
 ownScript(e,'if(k.startsWith("tracker."))delete vars[k]','if(k.startsWith("tracker-kept."))delete vars[k]');
 const r=await rehearse(e,B,'--backup',e.act,'--port',await freePort(),'--timeout','3');
 assert.equal(r.code,1,r.out+r.err);
 assert.ok(r.out.includes('FAIL tracker-configured: bootConfig sets trackers for acme\n'),r.out);
 assert.equal(existsSync(rh(e,'host-args.log')),false);
});

test('R11 mos-0961: a scratch config on the live data root or on any root but the scratch one, or a sessions.json naming a running pid, refuses by name',async(t)=>{
 // mosaic-config already refuses the live path itself, which contains the scratch config directory;
 // the guard catches a path that reaches the live data root through a link.
 const e=await rmk(t),link=join(e.root,'live-link');symlinkSync(e.data,link);
 ownScript(e,'c.dataRoot=data;',`c.dataRoot=${JSON.stringify(link)};`);
 const r=await rehearse(e,B,'--backup',e.act,'--port',await freePort(),'--timeout','3');
 assert.equal(r.code,1,r.out+r.err);
 assert.ok(r.out.includes(`FAIL data-root-live: the scratch config names dataRoot ${link}, which resolves to the live data root ${e.data}\n`),r.out);
 assert.equal(existsSync(rh(e,'host-args.log')),false);
 // A root that is neither live nor this rehearsal's, and one that is not there.
 for(const [dir,made,msg] of [['other-root',true,(d,R)=>`the scratch config resolves to ${d}, not ${join(R,'data')}`],['no-root',false,(d)=>`${d} does not exist`]]){
  const g=await rmk(t),d=join(g.root,dir);if(made)mkdirSync(d);
  ownScript(g,'c.dataRoot=data;',`c.dataRoot=${JSON.stringify(d)};`);
  const q=await rehearse(g,B,'--backup',g.act,'--port',await freePort(),'--timeout','3');
  assert.equal(q.code,1,dir+q.out+q.err);
  assert.ok(q.out.includes(`FAIL data-root-scratch: ${msg(d,q.dir)}\n`),dir+q.out);
  assert.equal(existsSync(rh(g,'host-args.log')),false);
 }
 const f=await rmk(t);
 ownScript(f,`printf '{"notifyVersion":1,"binding":null}\\n' > "$R/data/notify/$BUSINESS/notify.json"`,`printf '{"notifyVersion":1,"binding":null}\\n' > "$R/data/notify/$BUSINESS/notify.json" && mkdir "$R/data/bus-host" && printf '{"sessionsVersion":1,"sessions":[{"pid":%s}]}\\n' "$$" > "$R/data/bus-host/sessions.json"`);
 const s=await rehearse(f,B,'--backup',f.act,'--port',await freePort(),'--timeout','3');
 assert.equal(s.code,1,s.out+s.err);
 assert.ok(/^FAIL sessions-live: \S+\/bus-host\/sessions\.json names running pid\(s\) \d+$/m.test(s.out),s.out);
 // The file is left as it was: the rehearsal never deletes it and retries.
 assert.ok(existsSync(join(s.dir,'data','bus-host','sessions.json')));
 assert.equal(existsSync(rh(f,'host-args.log')),false);
});

test('R12 mos-0962: a notifier config with a binding fails notify-off',async(t)=>{
 const e=await rmk(t);
 ownScript(e,`printf '{"notifyVersion":1,"binding":null}\\n'`,`printf '{"notifyVersion":1,"binding":"discord"}\\n'`);
 const r=await rehearse(e,B,'--backup',e.act,'--port',await freePort(),'--timeout','3');
 assert.equal(r.code,1,r.out+r.err);
 assert.ok(r.out.includes('FAIL notify-off: '),r.out);
 assert.equal(existsSync(rh(e,'host-args.log')),false);
});

test('R13 the pre-checks: an old copy, a backup that fails its sums, a missing backup or pointer, and usage',async(t)=>{
 const e=await rmk(t),before=untouched(e),port=await freePort();
 const old=await rehearse(e,A,'--backup',e.act,'--port',port);
 assert.equal(old.code,1);assert.equal(old.out,`FAIL copy-without-no-launch: ${A}'s bus host has no --no-launch flag\nREHEARSAL_FAIL\n`);
 const none=await rehearse(e,B,'--backup','20261020T000000Z-000000000000','--port',port);
 assert.equal(none.code,1);assert.ok(none.out.includes(`FAIL backup-missing: ${join(e.data,'backups','stack','20261020T000000Z-000000000000')} has no bus/bus.sqlite and SHA256SUMS\n`),none.out);
 const f=await rmk(t);appendFileSync(join(f.backup,'bus','bus.sqlite'),'x');
 const bad=await rehearse(f,B,'--backup',f.act,'--port',port);
 assert.equal(bad.code,1);assert.ok(bad.out.includes(`FAIL backup-sums: ${f.backup}/bus does not match its SHA256SUMS\n`),bad.out);
 const g=await rmk(t);rmSync(g.pointer);
 const np=await rehearse(g,B,'--backup',g.act,'--port',port);
 assert.equal(np.code,1);assert.match(np.out,/^FAIL no-pointer: /);
 for(const args of [['--port',port],['--backup',e.act],['--backup',e.act,'--port','80'],['--backup',e.act,'--port','70000'],['--backup','relative/dir','--port',port],['--backup',e.act,'--port',port,'--pm'],['--backup',e.act,'--port',port,'--plan']]){
  const u=await rehearse(e,B,...args);assert.equal(u.code,4,args.join(' ')+u.out+u.err);assert.match(u.err,/^usage: /);
 }
 assert.deepEqual([...rDirs(e),...rDirs(f),...rDirs(g)],[]);
 assert.equal(untouched(e),before);
});

test('R14 a host that writes the live config, the live business file or the backup fails the end check by name',async(t)=>{
 for(const [pick,name] of [[(e)=>e.cfg,'live-config-unchanged'],[(e)=>e.biz,'live-config-unchanged'],[(e)=>join(e.backup,'bus','bus.sqlite'),'backup-unchanged']]){
  const e=await rmk(t),f=pick(e);rfault(e,'host-touches');writeFileSync(rh(e,'faults','host-touches'),`${f}\n`);
  const r=await rehearse(e,B,'--backup',e.act,'--port',await freePort(),'--timeout','10');
  assert.equal(r.code,1,f+r.out+r.err);
  assert.deepEqual(r.names.filter((n)=>n.startsWith('FAIL')),[`FAIL ${name}`],f+r.out);
  assert.ok(r.names.includes('PASS gate')&&r.names.includes('PASS host-stopped'),f+r.out);
  assert.ok(r.out.endsWith(`REHEARSAL_FAIL\nrehearsal directory: ${r.dir}\n`),r.out);
 }
});

test('R15 a rehearsal stopped by TERM, INT or HUP fails signal and still stops the host and Console and runs the end checks',async(t)=>{
 for(const sig of ['SIGTERM','SIGINT','SIGHUP']){
  // The Console never answers /healthz, so the gate is still waiting when the signal comes.
  const e=await rmk(t);rfault(e,`healthz-${B}`);
  e.during=async(ch)=>{for(let i=0;i<200&&!existsSync(rh(e,'console-args.log'));i++)await new Promise((r)=>setTimeout(r,50));ch.kill(sig)};
  const r=await rehearse(e,B,'--backup',e.act,'--port',await freePort(),'--timeout','30');
  assert.equal(r.code,1,sig+r.out+r.err);
  assert.deepEqual(r.names,[...PRE,'PASS migration','FAIL signal','PASS console-stopped','PASS host-stopped','PASS host-released-store','PASS backup-unchanged','PASS live-config-unchanged'],sig+r.out);
  assert.ok(r.out.includes('FAIL signal: the rehearsal was interrupted\n'),r.out);
  assert.ok(r.out.endsWith(`REHEARSAL_FAIL\nrehearsal directory: ${r.dir}\n`),r.out);
  const pid=JSON.parse(readFileSync(join(r.dir,'data','fixture-host.json'),'utf8')).host.pid;
  assert.equal(existsSync(`/proc/${pid}`),false,`${sig}: host pid ${pid} is still there`);
 }
});