stack/packages/cli/tests/stack-copy.test.mjs

import test from 'node:test';
import assert from 'node:assert/strict';
import {execFileSync,spawnSync,spawn} from 'node:child_process';
import {symlinkSync,unlinkSync,mkdtempSync,mkdirSync,writeFileSync,readFileSync,cpSync,rmSync,renameSync,chmodSync,existsSync,statSync,readdirSync,lstatSync,readlinkSync} from 'node:fs';
import {createHash} from 'node:crypto';
import {tmpdir} from 'node:os';
import {join,dirname} from 'node:path';
import {fileURLToPath} from 'node:url';
import {once} from 'node:events';
import {createServer} from 'node:net';
import {createOwnedRunner} from './fixtures/owned-child.mjs';
import {pathToFileURL} from 'node:url';
import {fixture,notifyConfig,BUSINESSES} from './helpers.mjs';
import {reserveOrg,activateOrg} from '../../business/src/org-registry.mjs';
import {writeDeployment} from '../src/deployment.mjs';
import {fakeOidc} from '../../webui/tests/helpers/fake-oidc.mjs';
const ROOT=fileURLToPath(new URL('../../..',import.meta.url)).replace(/\/$/,'');
const git=(cwd,...args)=>execFileSync('git',['-c','user.name=fixture','-c','user.email=fixture@invalid','-c','commit.gpgsign=false','-c','core.hooksPath=/dev/null','-C',cwd,...args],{encoding:'utf8'}).trim();
export function setup(t, realPin=false){
 const root=mkdtempSync(join(tmpdir(),'stack-copy-')),repo=join(root,'repo'),copies=join(root,'copies'),bin=join(root,'bin');
 const runner=createOwnedRunner(t,()=>env);
 t.after(async()=>{
  await runner.close();
  execFileSync('chmod',['-R','u+w',root]);rmSync(root,{recursive:true,force:true});
 });
 mkdirSync(repo);mkdirSync(bin);
 // A linked node_modules (a deploy tree) is not a directory to .gitignore's node_modules/; npm ci makes the copy's own.
 const tracked=execFileSync('git',['-C',ROOT,'ls-files','-co','--exclude-standard','--','scripts','packages','adapters','roles','tools/unslop-hook','RELEASE','package.json','package-lock.json',':!packages/*/tests',':!scripts/foundation',':(exclude,glob)**/node_modules'],{encoding:'utf8'}).trim().split('\n');
 for(const f of tracked)if(existsSync(join(ROOT,f)))cpSync(join(ROOT,f),join(repo,f));
 // Lightweight npm-ci fixture; real pin/host/proof integration is tested separately.
 const pkg={name:'copy-fixture',version:'1.0.0'};
 if(!realPin){writeFileSync(join(repo,'package.json'),JSON.stringify(pkg));
 writeFileSync(join(repo,'package-lock.json'),JSON.stringify({name:pkg.name,version:pkg.version,lockfileVersion:3,packages:{'':pkg}}));}
 else {for(const f of ['package.json','package-lock.json'])cpSync(join(ROOT,f),join(repo,f));}
 git(repo,'init','-q','-b','refactor');git(repo,'config','gc.auto','0');git(repo,'add','.');git(repo,'commit','-qm','fixture');
 const id=git(repo,'rev-parse','HEAD');git(repo,'update-ref','refs/remotes/origin/refactor',id);
 const env={PATH:`${bin}:${dirname(process.execPath)}:/usr/bin:/bin`,HOME:root,XDG_DATA_HOME:join(root,'data'),XDG_CONFIG_HOME:join(root,'config')};
 const search=join(root,'unit-search');mkdirSync(search);
 const analyze=body=>{writeFileSync(join(bin,'systemd-analyze'),'#!/bin/sh\n'+body);chmodSync(join(bin,'systemd-analyze'),0o755);};
 analyze(`printf '%s\\n' '${search}'\n`);
 const runChild=runner.run;
 const fake=body=>{writeFileSync(join(bin,'systemctl'),'#!/bin/bash\n'+body);chmodSync(join(bin,'systemctl'),0o755)};
 const run=(script,args=[])=>runChild(join(repo,'scripts',script),args);
 return {root,repo,copies,bin,id,env,run,runChild,fake,search,analyze};
}
// Row 66: a session launched from a pinned copy reads each harness module's files from the copy,
// so every path a module names under its REPO (adapter, mounts, bundle sources) is in COPY_PATHS.
test('a copy carries every file the harness modules read from it',async t=>{
 const s=setup(t);assert.equal((await s.run('stack-copy.sh',['copy',s.id,'--copies',s.copies])).status,0);
 const copy=join(s.copies,s.id),paths=[];
 for(const kind of ['pi','claude-code']){
  const m=await import(pathToFileURL(join(copy,'packages','plugins','harness',kind,'index.mjs')).href);
  // pi's mounts() resolves node_modules, which this fixture copy lacks; its unslop mounts are its
  // bundle sources, so the sources stand in for them.
  paths.push(m.adapter(),...(kind==='pi'?Object.values(m.bundle().sources):m.mounts({env:{}}).map(x=>x.src)));
 }
 assert.equal(paths.filter(p=>p.includes('/tools/unslop-hook/')).length,6,paths.join('\n'));
 for(const p of paths){assert.ok(p.startsWith(copy+'/'),p);assert.ok(existsSync(p),p);}
});
test('shared copy: npm ci, pushed reachability, readonly/existing copy, webui delegation',async t=>{
 const s=setup(t),r=(await s.run('stack-copy.sh',['copy',s.id,'--copies',s.copies]));assert.equal(r.status,0,r.stderr);
 const copy=join(s.copies,s.id);assert.equal(statSync(copy).mode&0o777,0o555);
 assert.deepEqual(JSON.parse(readFileSync(join(copy,'.stack-build.json'),'utf8')), {commit:s.id}); assert.equal(statSync(join(copy,'.stack-build.json')).mode&0o222,0);
 for(const f of ['scripts/mosaic','adapters/pi/adapter.sh','packages/queue/src/cli.mjs','package.json','package-lock.json','packages/tasks/requirements.json','packages/project/src/index.mjs','packages/library/src/index.mjs','packages/project/schemas/project.schema.json','packages/project/templates/north-star.md','packages/plugins/src/kinds.mjs','packages/plugins/src/loader.mjs','packages/processing-control/src/state.mjs','packages/processing-control/src/containers.mjs','packages/processing-control/src/effects.mjs'])assert.ok(existsSync(join(copy,f)),f);
 const npm=join(s.bin,'npm');writeFileSync(npm,'#!/bin/sh\nexit 99\n');chmodSync(npm,0o755);
 const existing=(await s.run('webui-service.sh',['copy',s.id,'--copies',s.copies]));assert.equal(existing.status,0);assert.equal(existing.stdout,`exists: ${copy}\n`);unlinkSync(npm);
 git(s.repo,'update-ref','refs/remotes/origin/refactor',git(s.repo,'hash-object','-w','package.json'));
 const denied=(await s.run('stack-copy.sh',['copy',s.id,'--copies',s.copies]));assert.notEqual(denied.status,0);assert.match(denied.stderr,/origin\/refactor/);
});
test('wrapper preserves Q81 lease and marker, rejects foreign/symlink; check uses effective roots',async t=>{
 const s=setup(t);assert.equal((await s.run('stack-copy.sh',['copy',s.id,'--copies',s.copies])).status,0);
 const wrapper=join(s.bin,'mosaic'),marker='# mosaic-cli wrapper (Q81, agents/sage/work/q81/mosaic-cli.sh)';
 const lease=`[ "\${1:-}" = __lease-capability ] && exec "${s.bin}/mosaic-old" "$@"`;
 writeFileSync(wrapper,`#!/usr/bin/env bash\n${marker}\n${lease}\nexec "/old/scripts/mosaic" "$@"\n`);
 assert.equal((await s.run('stack-copy.sh',['wrapper',s.id,'--copies',s.copies,'--bin',s.bin])).status,0);
 const lines=readFileSync(wrapper,'utf8').trimEnd().split('\n');
 assert.equal(lines[1],marker);
 assert.equal(lines[2],`# CLI runs from pinned copy: ${join(s.copies,s.id)}`);
 assert.equal(lines[3],'# The Q81 lease probe still answers at mosaic-old.');
 assert.equal(lines.at(-1),`exec "${join(s.copies,s.id)}/scripts/mosaic" "$@"`);
 assert.match(readFileSync(wrapper,'utf8'),new RegExp(s.id));assert.ok(readFileSync(wrapper,'utf8').includes(lease));
 const old=join(s.bin,'mosaic-old');writeFileSync(old,'#!/bin/sh\nprintf \"legacy:%s\\n\" \"$1\"\n');chmodSync(old,0o755);
 assert.equal(spawnSync(wrapper,['__lease-capability'],{env:s.env,encoding:'utf8'}).stdout,'legacy:__lease-capability\n');
 const copy=join(s.copies,s.id);s.fake(`case "$*" in *mosaic-bus*) echo 'LoadState=loaded'; echo 'WorkingDirectory=${copy}'; echo 'ExecStart={ path=${copy}/scripts/mosaic ; argv[]=${copy}/scripts/mosaic bus start mosaic-stack --pm ; }';; *) echo 'LoadState=loaded'; echo 'WorkingDirectory=${copy}'; echo 'ExecStart={ path=/usr/bin/node ; argv[]=/usr/bin/node ${copy}/packages/webui/src/cli.mjs serve ; }';; esac\n`);
 assert.equal((await s.run('stack-copy.sh',['check','--copies',s.copies,'--bin',s.bin])).status,0);
 s.fake(`echo 'LoadState=loaded'; echo 'WorkingDirectory=${copy}';case \"$*\" in *mosaic-bus*)echo 'ExecStart={ path=/other/scripts/mosaic ; argv[]=/other/scripts/mosaic bus start demo ; }';; *)echo 'ExecStart={ path=/usr/bin/node ; argv[]=/usr/bin/node ${copy}/packages/webui/src/cli.mjs serve ; }';;esac\n`);
 assert.equal((await s.run('stack-copy.sh',['check','--copies',s.copies,'--bin',s.bin])).status,1,'effective ExecStart mismatch');
 s.fake(`echo 'LoadState=loaded'; echo 'WorkingDirectory=/other';\n`);assert.equal((await s.run('stack-copy.sh',['check','--copies',s.copies,'--bin',s.bin])).status,1);
 const foreign=`#!/usr/bin/env bash\n# foreign wrapper\n${lease}\nexec \"${copy}/scripts/mosaic\" \"$@\"\n`;writeFileSync(wrapper,foreign);
 // Restore matching effective roots: only the foreign marker refuses check.
 s.fake(`echo 'LoadState=loaded';echo 'WorkingDirectory=${copy}';case "$*" in *mosaic-bus*) echo 'ExecStart={ path=${copy}/scripts/mosaic ; argv[]=${copy}/scripts/mosaic bus start demo ; }';; *)echo 'ExecStart={ path=/usr/bin/node ; argv[]=/usr/bin/node ${copy}/packages/webui/src/cli.mjs serve ; }';;esac\n`);
 assert.equal((await s.run('stack-copy.sh',['check','--copies',s.copies,'--bin',s.bin])).status,1);
 assert.notEqual((await s.run('stack-copy.sh',['wrapper',s.id,'--copies',s.copies,'--bin',s.bin])).status,0);assert.equal(readFileSync(wrapper,'utf8'),foreign);
 const backing=join(s.bin,'backing');writeFileSync(backing,`#!/usr/bin/env bash\n${marker}\n${lease}\nexec \"/old/scripts/mosaic\" \"$@\"\n`);unlinkSync(wrapper);symlinkSync(backing,wrapper);assert.notEqual((await s.run('stack-copy.sh',['wrapper',s.id,'--copies',s.copies,'--bin',s.bin])).status,0);
});
test('row 190 N6: check --instance passes only when the wrapper exports the instance\'s MOSAIC_CONFIG',async t=>{
 const s=setup(t);assert.equal((await s.run('stack-copy.sh',['copy',s.id,'--copies',s.copies])).status,0);
 const boot=(await s.run('bootstrap.sh',['--instance','alpha']));assert.equal(boot.status,0,boot.stderr);
 const copy=join(s.copies,s.id),wrapper=join(s.bin,'mosaic-alpha'),cfg=join(s.root,'.config','mosaic-alpha','config.json');
 const w=(await s.run('stack-copy.sh',['wrapper',s.id,'--instance','alpha','--copies',s.copies,'--bin',s.bin]));assert.equal(w.status,0,w.stderr);
 s.fake(`echo 'LoadState=loaded';echo 'WorkingDirectory=${copy}';case "$*" in *mosaic-bus-alpha@demo*) echo 'ExecStart={ path=${copy}/scripts/mosaic ; argv[]=${copy}/scripts/mosaic bus start demo ; }';; *mosaic-webui-alpha*) echo 'ExecStart={ path=/usr/bin/node ; argv[]=/usr/bin/node ${copy}/packages/webui/src/cli.mjs serve ; }';; *) exit 1;; esac\n`);
 const check=async()=>(await s.run('stack-copy.sh',['check','--instance','alpha','--copies',s.copies,'--bin',s.bin,'--business','demo']));
 const good=readFileSync(wrapper,'utf8');assert.equal(good.split('\n')[3],`export MOSAIC_CONFIG='${cfg}'`);
 let r=await check();assert.equal(r.status,0,r.stdout+r.stderr);assert.equal(r.stdout,`bus: ${copy}\nConsole: ${copy}\nCLI: ${copy}\n`);
 for(const [label,text] of [
  ['another config',good.replace(`export MOSAIC_CONFIG='${cfg}'`,`export MOSAIC_CONFIG='${join(s.root,'.config','mosaic-beta','config.json')}'`)],
  ['no config line',good.replace(`export MOSAIC_CONFIG='${cfg}'\n`,'')],
 ]){
  writeFileSync(wrapper,text);r=await check();
  assert.equal(r.status,1,label);assert.equal(r.stdout,`bus: ${copy}\nConsole: ${copy}\nCLI: ${copy} (MOSAIC_CONFIG mismatch)\n`,label);
 }
});
test('bus unit copy/pm pins, install refuses all busy states and failed reads, drop-in refusal',async t=>{
 const s=setup(t);assert.equal((await s.run('stack-copy.sh',['copy',s.id,'--copies',s.copies])).status,0);
 const args=['--copy',s.id,'--copies',s.copies,'--pm'];
 const render=(await s.run('bus-service.sh',['render',...args]));assert.equal(render.status,0,render.stderr);assert.match(render.stdout,new RegExp(`WorkingDirectory=${s.copies}/${s.id}`));assert.match(render.stdout,/bus start %i --pm/);
 const units=join(s.root,'units');
 for(const state of ['active','activating','deactivating','reloading']){s.fake(`echo '[email protected] loaded ${state} running fixture';\n`);const r=(await s.run('bus-service.sh',['install',...args,'--dir',units,'--no-reload']));assert.notEqual(r.status,0,state);assert.ok(!existsSync(units));}
 s.fake('exit 1\n');assert.notEqual((await s.run('bus-service.sh',['install',...args,'--dir',units,'--no-reload'])).status,0);assert.ok(!existsSync(units));
 const dropdir=join(s.search,'[email protected]');mkdirSync(dropdir);const drop=join(dropdir,'pm.conf');writeFileSync(drop,'[Service]\nExecStart=elsewhere\n');
 s.fake(`case "$*" in *list-units*) echo '[email protected] loaded inactive dead fixture';; *)exit 99;; esac\n`);
 const refused=(await s.run('bus-service.sh',['install',...args,'--dir',units,'--no-reload']));assert.notEqual(refused.status,0);assert.ok(refused.stderr.includes(drop));assert.ok(!existsSync(units));
 writeFileSync(drop,'[Service]\nEnvironment=SAFE=1\n');assert.equal((await s.run('bus-service.sh',['install',...args,'--dir',units,'--no-reload'])).status,0);
});


test('missing package manifest refuses before npm; npm failure removes the unpublished temp copy', async t=>{
 const s=setup(t);git(s.repo,'rm','package.json');git(s.repo,'commit','-qm','missing package');const id=git(s.repo,'rev-parse','HEAD');git(s.repo,'update-ref','refs/remotes/origin/refactor',id);
 const npm=join(s.bin,'npm'),called=join(s.root,'npm-called');writeFileSync(npm,`#!/bin/bash\necho called > '${called}'\nexit 1\n`);chmodSync(npm,0o755);
 const r=(await s.run('stack-copy.sh',['copy',id,'--copies',s.copies]));assert.notEqual(r.status,0);assert.match(r.stderr,/package.json/);assert.ok(!existsSync(called));assert.ok(!existsSync(join(s.copies,id)));
 git(s.repo,'reset','--hard',s.id);git(s.repo,'update-ref','refs/remotes/origin/refactor',s.id);
 const tar=join(s.bin,'tar');writeFileSync(tar,'#!/bin/sh\n/usr/bin/tar \"$@\" || exit $?\nfor a; do dest=\"$a\"; done\nrm \"$dest/package.json\"\n');chmodSync(tar,0o755);
 const absent=(await s.run('stack-copy.sh',['copy',s.id,'--copies',s.copies]));assert.notEqual(absent.status,0);assert.match(absent.stderr,/package.json.*missing/);assert.ok(!existsSync(called));unlinkSync(tar);
 const fail=(await s.run('stack-copy.sh',['copy',s.id,'--copies',s.copies]));assert.notEqual(fail.status,0);assert.match(fail.stderr,/npm ci failed/);assert.ok(existsSync(called));assert.deepEqual(execFileSync('ls',['-A',s.copies],{encoding:'utf8'}),'');
});


async function until(fn,ms=10000){const end=Date.now()+ms;while(Date.now()<end){if(fn())return;await new Promise(r=>setTimeout(r,25));}throw Error('fixture startup timed out');}
async function childResult(command,args,env,input){
 const p=spawn(command,args,{env,stdio:['pipe','pipe','pipe']});let stdout='',stderr='';
 p.stdout.on('data',c=>stdout+=c);p.stderr.on('data',c=>stderr+=c);p.stdin.end(input);
 const timer=setTimeout(()=>p.kill('SIGKILL'),15000);
 try{const [status]=await once(p,'close');return {status,stdout,stderr};}finally{clearTimeout(timer)}
}
test('real pinned install loads bus and Console; the Console starts only with --sso and its deployed prerequisites; same-copy mosaic talk passes proof, other trees refuse', {timeout:180000},async t=>{
 const s=setup(t,true);
 const copied=(await s.run('stack-copy.sh',['copy',s.id,'--copies',s.copies]));assert.equal(copied.status,0,copied.stderr);
 const root=join(s.copies,s.id),url=f=>pathToFileURL(join(root,f)).href;
 const {checkEnginePin}=await import(url('packages/conversation/src/pi-pin.mjs'));assert.equal(checkEnginePin(root).version,'0.85.1');
 const home=join(s.root,'home'),f=fixture(home),configDir=join(home,'.config','mosaic-pin');
 mkdirSync(join(home,'.config'),{recursive:true});renameSync(join(home,'config'),configDir);chmodSync(configDir,0o700);
 writeFileSync(join(f.dataRoot,'instance.json'),JSON.stringify({instanceVersion:1,name:'pin'}));
 const ctx={configDir,dataRoot:f.dataRoot,instance:'pin'};
 const acme=await reserveOrg(ctx,'acme');await activateOrg(ctx,'acme');notifyConfig(acme.root,'acme',null);
 const demo=await reserveOrg(ctx,'demo');await activateOrg(ctx,'demo');
 // Only synthetic configuration, no inherited credentials/agent environment.
 const env={...s.env,HOME:home,MOSAIC_CONFIG:join(configDir,'config.json'),MOSAIC_ROLES_DIR:f.roles};
 const host=spawn(join(root,'scripts/mosaic'),['bus','start','acme'],{env,stdio:['ignore','pipe','pipe']});let hostOut='',hostErr='';
 host.stdout.on('data',c=>hostOut+=c);host.stderr.on('data',c=>hostErr+=c);
 try{await until(()=>hostOut.includes('\"org\":\"acme\"')||host.exitCode!==null);assert.match(hostOut,/\"org\":\"acme\"/,hostErr);}
 finally{if(host.exitCode===null&&host.signalCode===null){const done=once(host,'close');const stop=spawnSync(join(root,'scripts/mosaic'),['bus','stop','acme'],{env,encoding:'utf8'});assert.equal(stop.status,0,stop.stderr);await done;}}
 // The copy is stamped (M3): its Console starts only with --sso, console.sso and its slot, .deployed and accounts.json.
 const serveArgs=sso=>[join(root,'packages/webui/src/cli.mjs'),'serve','--port','0','--business','acme','--board','http://127.0.0.1:9',...(sso?['--sso']:[])];
 const op=await fakeOidc();t.after(()=>op.close());const iss=op.issuer('a');
 const ca=join(s.root,'ca.pem');writeFileSync(ca,op.cert);const webEnv={...env,NODE_EXTRA_CA_CERTS:ca};
 const startRefused=async(sso,why)=>{const r=await childResult(process.execPath,serveArgs(sso),webEnv,'');assert.equal(r.status,2,r.stderr);assert.match(r.stderr,why);assert.doesNotMatch(r.stdout,/Mosaic Console:/);};
 await startRefused(false,/stamped build serve requires --sso/);
 await startRefused(true,/\.deployed is missing or invalid/);
 writeDeployment({dataRoot:f.dataRoot},configDir);
 await startRefused(true,/accounts file not found/);
 writeFileSync(join(configDir,'accounts.json'),JSON.stringify({accountsVersion:1,revision:1,users:[{id:'u-000000000001',subjects:[{provider:'a',sub:'owner'}],name:'Owner',instanceRole:'operator',state:'active',authGen:1,created:'2026-11-10T00:00:00Z'}],memberships:[],invites:[]}),{mode:0o600});
 await startRefused(true,/must be a configured provider/);
 const config=JSON.parse(readFileSync(env.MOSAIC_CONFIG,'utf8'));
 config.console={sso:{publicOrigin:'https://console.test',providers:[{id:'a',issuer:iss.issuer,clientId:iss.clientId,clientSecret:{slot:'a'},algs:['RS256'],subjects:[{sub:'owner',name:'Owner'}]}]}};
 writeFileSync(env.MOSAIC_CONFIG,JSON.stringify(config));
 await startRefused(true,/client secret slot is missing/);
 mkdirSync(join(configDir,'secrets','mosaic-stack'),{recursive:true,mode:0o700});
 const slot=join(configDir,'secrets','mosaic-stack','a');writeFileSync(slot,iss.clientSecret,{mode:0o600});chmodSync(slot,0o600);
 const web=spawn(process.execPath,serveArgs(true),{env:webEnv,stdio:['ignore','pipe','pipe']});let webOut='',webErr='';
 web.stdout.on('data',c=>webOut+=c);web.stderr.on('data',c=>webErr+=c);
 try{await until(()=>/Mosaic Console: http:/.test(webOut)||web.exitCode!==null);const port=webOut.match(/127\.0\.0\.1:(\d+)/)?.[1];assert.ok(port,webErr);assert.equal((await fetch(`http://127.0.0.1:${port}/healthz`)).status,200);}
 finally{if(web.exitCode===null&&web.signalCode===null){const done=once(web,'close');web.kill();await done;}}
 // The production runtime derives cliPath. Only agent ancestry is mocked;
 // readProcess passes through for tester.mjs (row 110).
 // real pid/start/argv/nonce and the runtime's entry-path binding remain intact.
 const proofScript=join(s.root,'proof-runtime.mjs');
 writeFileSync(proofScript,`
 import {mock} from 'node:test';
 const humanURL=${JSON.stringify(url('packages/bus/src/human.mjs'))};
 const real=await import(humanURL);
 mock.module(humanURL,{namedExports:{readProcess:real.readProcess,verifyHuman:(proof,options)=>real.verifyHuman(proof,{...options,readProcess:pid=>({...real.readProcess(pid),ppid:1})})}});
 const {startBroker}=await import(${JSON.stringify(url('packages/bus/src/runtime.mjs'))});
 const runtime=await startBroker({dataRoot:${JSON.stringify(demo.root)},businesses:${JSON.stringify(BUSINESSES)}});
 const broker=runtime.broker;
 const pm=broker.bindLaunch({business:'demo',role:'pm',run:'pm-fixture',harness:'pi'});broker.request(pm,{verb:'role.claim'});
 const request=broker.request.bind(broker);broker.request=(cap,r)=>{const result=request(cap,r);if(r.verb==='message.send'&&r.args.to==='pm')request(pm,{verb:'message.send',args:{to:'human',body:'same-copy reply',in_reply_to:result.id}});return result;};
 process.on('SIGTERM',async()=>{await runtime.close();process.exit(0)});
 console.log('proof runtime ready');
 `);
 const proof=spawn(process.execPath,['--experimental-test-module-mocks',proofScript],{env,stdio:['ignore','pipe','pipe']});let proofOut='',proofErr='';
 proof.stdout.on('data',c=>proofOut+=c);proof.stderr.on('data',c=>proofErr+=c);
 const socket=join(demo.root,'bus','broker.sock');
 try{
  await until(()=>proofOut.includes('proof runtime ready')||proof.exitCode!==null);assert.match(proofOut,/proof runtime ready/,proofErr);
  const result=await childResult(join(root,'scripts/mosaic'),['talk','pm','hello','--business','demo','--wait','1'],env);
  assert.equal(result.status,0,result.stderr);assert.match(result.stdout,/sent .* to pm/);assert.match(result.stdout,/same-copy reply/);
  for(const other of [ROOT,join(s.root,'other-copy')]){
   if(other!==ROOT)cpSync(join(root,'packages'),join(other,'packages'),{recursive:true});
   const result=await childResult(process.execPath,[join(other,'packages/bus/src/human-cli.mjs'),socket],env,JSON.stringify({business:'demo',verb:'inbox'})+'\n');
   assert.notEqual(result.status,0);assert.equal(result.stderr.trim(),'human-required');
  }
 }finally{if(proof.exitCode===null&&proof.signalCode===null){const done=once(proof,'close');proof.kill('SIGTERM');await done;}}
});


test('bus status reads effective copy/pm/drop-ins without writes; check refuses an overridden ExecStart',async t=>{
 const s=setup(t);assert.equal((await s.run('stack-copy.sh',['copy',s.id,'--copies',s.copies])).status,0);
 const copy=join(s.copies,s.id),drop=join(s.root,'pm.conf');
 const rows=`LoadState=loaded\nWorkingDirectory=${copy}\nExecStart={ path=${copy}/scripts/mosaic ; argv[]=${copy}/scripts/mosaic bus start demo --pm ; }\nDropInPaths=${drop}\n`;
 s.fake(`case "$*" in *show*) cat <<'ROWS'\n${rows}ROWS\n;; *is-active*) echo inactive;; *is-enabled*) echo disabled;; *)exit 99;;esac\n`);
 const status=(await s.run('bus-service.sh',['status','demo']));assert.equal(status.status,0,status.stderr);assert.match(status.stdout,new RegExp(`copy: ${s.id}`));assert.match(status.stdout,/pm: on/);assert.ok(status.stdout.includes(drop));
});


test('drop-ins in either override field and malformed metadata refuse; uninstall also checks --no-reload',async t=>{
 const s=setup(t),units=join(s.root,'units'),dropdir=join(s.search,'[email protected]');mkdirSync(dropdir);const drop=join(dropdir,'override.conf');
 for(const field of ['ExecStart','WorkingDirectory']){
  writeFileSync(drop,`[Service]\n${field}=override\n`);
  s.fake(`case "$*" in *list-units*) echo '[email protected] loaded inactive dead fixture';; *)exit 99;;esac\n`);
  const r=(await s.run('bus-service.sh',['install','--dir',units,'--no-reload']));assert.notEqual(r.status,0);assert.ok(r.stderr.includes(drop));assert.ok(!existsSync(units));
 }
 s.fake('exit 0\n');s.analyze('exit 0\n');const unknown=(await s.run('bus-service.sh',['install','--dir',units,'--no-reload']));assert.notEqual(unknown.status,0);assert.match(unknown.stderr,/unknown/);
 mkdirSync(units);const file=join(units,'[email protected]');writeFileSync(file,'unchanged');
 s.fake("echo '[email protected] loaded active running fixture'\n");assert.notEqual((await s.run('bus-service.sh',['uninstall','--dir',units,'--no-reload'])).status,0);assert.equal(readFileSync(file,'utf8'),'unchanged');
});


test('install never shows a template name on systemd 261; template drop-ins still refuse',async t=>{
 const s=setup(t),units=join(s.root,'units'),calls=join(s.root,'systemctl-calls');
 s.fake(`echo "$*" >> '${calls}'\ncase "$*" in *show*[email protected]*) echo 'neither a valid invocation ID nor unit name' >&2; exit 1;; *list-units*) echo '[email protected] loaded inactive dead fixture';; *)exit 99;; esac\n`);
 const result=(await s.run('bus-service.sh',['install','--dir',units,'--no-reload']));assert.equal(result.status,0,result.stderr);
 assert.doesNotMatch(readFileSync(calls,'utf8'),/show mosaic-bus@\.service/);
 // This rejection arm is deliberately exercised; it is not a dead show reply.
 assert.equal(spawnSync(join(s.bin,'systemctl'),['--user','show','[email protected]'],{env:s.env}).status,1);
 const dropdir=join(s.search,'[email protected]');mkdirSync(dropdir);const file=join(dropdir,'pm.conf');writeFileSync(file,'[Service]\nExecStart=override\n');
 const before=readFileSync(join(units,'[email protected]'),'utf8');
 const denied=(await s.run('bus-service.sh',['install','--dir',units,'--no-reload']));assert.notEqual(denied.status,0);assert.ok(denied.stderr.includes(file));assert.equal(readFileSync(join(units,'[email protected]'),'utf8'),before);
});
test('unlisted instance drop-in is found in another unit lookup directory; path discovery errors refuse',async t=>{
 const s=setup(t),units=join(s.root,'units'),second=join(s.root,'second-search');mkdirSync(second);
 const dropdir=join(second,'[email protected]');mkdirSync(dropdir);const file=join(dropdir,'cwd.conf');writeFileSync(file,'[Service]\nWorkingDirectory=/other\n');
 s.analyze(`printf '%s\\n' '${s.search}' '${second}'\n`);
 s.fake("case \"$*\" in *list-units*) echo '[email protected] loaded inactive dead fixture';; *)exit 99;; esac\n");
 const denied=(await s.run('bus-service.sh',['install','--dir',units,'--no-reload']));assert.notEqual(denied.status,0);assert.ok(denied.stderr.includes(file));assert.ok(!existsSync(units));
 s.analyze('exit 1\n');const failed=(await s.run('bus-service.sh',['install','--dir',units,'--no-reload']));assert.notEqual(failed.status,0);assert.match(failed.stderr,/unit-paths failed/);assert.ok(!existsSync(units));
});

// Row 108: inherited drop-ins apply even without a loaded bus instance.
for(const name of ['mosaic-.service.d','service.d'])test(`inherited ${name} override refuses without changing the unit`,async t=>{
 const s=setup(t),units=join(s.root,'units');mkdirSync(units);
 const target=join(units,'[email protected]');writeFileSync(target,'previous unit bytes');
 s.fake('exit 0\n');
 const dropdir=join(s.search,name);mkdirSync(dropdir);const file=join(dropdir,'override.conf');
 for(const field of ['WorkingDirectory','ExecStart']){
  writeFileSync(file,`[Service]\n${field}=/other\n`);
  const denied=(await s.run('bus-service.sh',['install','--dir',units,'--no-reload']));
  assert.equal(denied.status,1,denied.stderr);assert.ok(denied.stderr.includes(file));assert.equal(readFileSync(target,'utf8'),'previous unit bytes');
 }
 writeFileSync(file,'[Service]\nEnvironment=SAFE=1\n');
 const allowed=(await s.run('bus-service.sh',['install','--dir',units,'--no-reload']));assert.equal(allowed.status,0,allowed.stderr);
});
test('inherited drop-in unreadable directory or file refuses before writing',async t=>{
 const s=setup(t),units=join(s.root,'units');mkdirSync(units);const target=join(units,'[email protected]');writeFileSync(target,'previous unit bytes');s.fake('exit 0\n');
 const dropdir=join(s.search,'service.d');symlinkSync(join(s.root,'absent-dir'),dropdir);
 const dir=(await s.run('bus-service.sh',['install','--dir',units,'--no-reload']));assert.equal(dir.status,1);assert.ok(dir.stderr.includes(dropdir));assert.equal(readFileSync(target,'utf8'),'previous unit bytes');
 unlinkSync(dropdir);mkdirSync(dropdir);const file=join(dropdir,'broken.conf');symlinkSync(join(s.root,'absent-file'),file);
 const broken=(await s.run('bus-service.sh',['install','--dir',units,'--no-reload']));assert.equal(broken.status,1);assert.ok(broken.stderr.includes(file));assert.equal(readFileSync(target,'utf8'),'previous unit bytes');
});
// Row 232: every file of a copy with its mode and bytes, for the byte-identical comparison.
function tree(dir){
 const out=[];
 const walk=rel=>{for(const e of readdirSync(join(dir,rel),{withFileTypes:true}).sort((a,b)=>a.name<b.name?-1:1)){
  const r=rel?`${rel}/${e.name}`:e.name,st=lstatSync(join(dir,r));
  if(e.isDirectory()){out.push(`d ${(st.mode&0o7777).toString(8)} ${r}`);walk(r);}
  else if(e.isSymbolicLink())out.push(`l ${r} ${readlinkSync(join(dir,r))}`);
  else out.push(`f ${(st.mode&0o7777).toString(8)} ${r} ${createHash('sha256').update(readFileSync(join(dir,r))).digest('hex')}`);
 }};
 walk('');return out;
}
test('row 232: copy --bundle copies a SHA the bundle\'s refactor reaches, byte-identical to copy SHA, and refuses the rest',async t=>{
 const s=setup(t),tmp=join(s.root,'t');mkdirSync(tmp);s.env.TMPDIR=tmp;
 const good=join(s.root,'good.bundle');git(s.repo,'bundle','create','-q',good,'refactor');
 const a=join(s.root,'copies-a'),b=join(s.root,'copies-b');
 let r=(await s.run('stack-copy.sh',['copy',s.id,'--copies',a]));assert.equal(r.status,0,r.stderr);
 r=(await s.run('stack-copy.sh',['copy','--bundle',good,s.id,'--copies',b]));assert.equal(r.status,0,r.stderr);
 const sum=createHash('sha256').update(readFileSync(good)).digest('hex'),release=git(s.repo,'show',`${s.id}:RELEASE`);
 assert.equal(r.stdout,`copied: ${join(b,s.id)}\nrelease: ${release}\nbundle sha256: ${sum}\n`);
 assert.deepEqual(tree(join(b,s.id)),tree(join(a,s.id)));
 assert.equal(statSync(join(b,s.id)).mode&0o777,0o555);
 const left=()=>readdirSync(tmp).filter(f=>f.startsWith('tmp.'));
 assert.deepEqual(left(),[],'the bundle\'s temporary repository is removed');
 // A second run finds the copy and still names the release.
 r=(await s.run('stack-copy.sh',['copy','--bundle',good,s.id,'--copies',b]));assert.equal(r.status,0,r.stderr);
 assert.equal(r.stdout,`exists: ${join(b,s.id)}\nrelease: ${release}\nbundle sha256: ${sum}\n`);
 // A relative bundle path works from the caller's directory.
 const c=join(s.root,'copies-c');
 r=await s.runChild(join(s.repo,'scripts','stack-copy.sh'),['copy','--bundle','good.bundle',s.id,'--copies',c],{cwd:s.root});
 assert.equal(r.status,0,r.stderr);assert.deepEqual(tree(join(c,s.id)),tree(join(a,s.id)));
 // A commit on another branch of the bundle: the bundle carries it, refactor does not reach it.
 const side=git(s.repo,'commit-tree','-p',s.id,'-m','side',`${s.id}^{tree}`);git(s.repo,'update-ref','refs/heads/side',side);
 const both=join(s.root,'both.bundle');git(s.repo,'bundle','create','-q',both,'refactor','side');
 const only=join(s.root,'side.bundle');git(s.repo,'bundle','create','-q',only,'side');
 const corrupt=join(s.root,'corrupt.bundle'),bytes=readFileSync(good);bytes[bytes.length-30]^=0xff;writeFileSync(corrupt,bytes);
 const cut=join(s.root,'cut.bundle');writeFileSync(cut,readFileSync(good).subarray(0,200));
 const junk=join(s.root,'junk.bundle');writeFileSync(junk,'# v2 git bundle\nnot a ref line\n\n');
 const d=join(s.root,'copies-d');
 for(const [label,bundle,id,re] of [
  ['not reachable',both,side,/not reachable from the bundle's refs\/heads\/refactor/],
  ['no refactor',only,side,/no refs\/heads\/refactor/],
  // verify reads the header and prerequisites; a damaged pack fails the fetch's own check.
  ['not a bundle',junk,s.id,/git bundle verify failed/],
  ['corrupt pack',corrupt,s.id,/cannot fetch/],
  ['truncated pack',cut,s.id,/cannot fetch/],
  ['absent',join(s.root,'none.bundle'),s.id,/bundle is absent/],
  ['short id',good,s.id.slice(0,12),/full 40-character commit id/],
 ]){
  r=(await s.run('stack-copy.sh',['copy','--bundle',bundle,id,'--copies',d]));
  assert.equal(r.status,1,label);assert.match(r.stderr,re,label);assert.equal(r.stdout,'',label);
  assert.ok(!existsSync(join(d,id)),label);assert.deepEqual(left(),[],label);
  if(existsSync(d))assert.deepEqual(readdirSync(d),[],label);
 }
 const link=join(s.root,'link.bundle');symlinkSync(good,link);
 r=(await s.run('stack-copy.sh',['copy','--bundle',link,s.id,'--copies',d]));assert.equal(r.status,1);assert.match(r.stderr,/symlink/);
 for(const args of [['copy','--bundle',good,s.id,'--allow-worktree'],['copy','--bundle',good],['copy','--bundle'],['wrapper','--bundle',good,s.id],['check','--units','system'],['copy',s.id,'--units','external'],['copy',s.id,'--create']])
  assert.equal((await s.run('stack-copy.sh',args)).status,4,args.join(' '));
});
test('row 232: wrapper --create writes the first wrapper only, the same bytes wrapper ID writes, and refuses over any file',async t=>{
 const s=setup(t);assert.equal((await s.run('stack-copy.sh',['copy',s.id,'--copies',s.copies])).status,0);
 const wrapper=join(s.bin,'mosaic'),root=join(s.copies,s.id);
 let r=(await s.run('stack-copy.sh',['wrapper',s.id,'--copies',s.copies,'--bin',s.bin]));
 assert.equal(r.status,1);assert.match(r.stderr,/wrapper is absent/,'no --create keeps the missing-wrapper refusal');assert.ok(!existsSync(wrapper));
 r=(await s.run('stack-copy.sh',['wrapper',s.id,'--copies',s.copies,'--bin',s.bin,'--create']));assert.equal(r.status,0,r.stderr);
 assert.equal(r.stdout,`wrapper: ${root}\n`);
 const created=readFileSync(wrapper,'utf8');assert.equal(statSync(wrapper).mode&0o777,0o755);
 r=(await s.run('stack-copy.sh',['wrapper',s.id,'--copies',s.copies,'--bin',s.bin]));assert.equal(r.status,0,r.stderr);
 assert.equal(r.stdout,`wrapper: ${root}\n`);assert.equal(readFileSync(wrapper,'utf8'),created,'wrapper ID writes the same bytes');
 const foreign='#!/bin/sh\n# not ours\n';
 for(const [label,make] of [['own wrapper',()=>{}],['foreign file',()=>writeFileSync(wrapper,foreign)],['symlink',()=>{rmSync(wrapper);symlinkSync(join(s.root,'elsewhere'),wrapper);}]]){
  make();const before=existsSync(wrapper)||label==='symlink'?(label==='symlink'?readlinkSync(wrapper):readFileSync(wrapper,'utf8')):null;
  r=(await s.run('stack-copy.sh',['wrapper',s.id,'--copies',s.copies,'--bin',s.bin,'--create']));
  assert.equal(r.status,1,label);assert.match(r.stderr,/--create and a wrapper exists/,label);
  assert.equal(label==='symlink'?readlinkSync(wrapper):readFileSync(wrapper,'utf8'),before,label);
  assert.deepEqual(readdirSync(s.bin).filter(f=>f.startsWith('.')),[],`${label}: no temporary file left`);
 }
 // A named instance: --create writes mosaic-NAME as wrapper --instance does, once.
 assert.equal((await s.run('bootstrap.sh',['--instance','alpha'])).status,0);
 const named=join(s.bin,'mosaic-alpha');
 r=(await s.run('stack-copy.sh',['wrapper',s.id,'--instance','alpha','--copies',s.copies,'--bin',s.bin,'--create']));assert.equal(r.status,0,r.stderr);
 const first=readFileSync(named,'utf8');
 r=(await s.run('stack-copy.sh',['wrapper',s.id,'--instance','alpha','--copies',s.copies,'--bin',s.bin]));assert.equal(r.status,0,r.stderr);
 assert.equal(readFileSync(named,'utf8'),first);
 r=(await s.run('stack-copy.sh',['wrapper',s.id,'--instance','alpha','--copies',s.copies,'--bin',s.bin,'--create']));
 assert.equal(r.status,1);assert.match(r.stderr,/--create and a wrapper exists/);assert.equal(readFileSync(named,'utf8'),first);
});
test('row 232: check --units external reads the system units, the default reads the user units',async t=>{
 const s=setup(t);assert.equal((await s.run('stack-copy.sh',['copy',s.id,'--copies',s.copies])).status,0);
 assert.equal((await s.run('stack-copy.sh',['wrapper',s.id,'--copies',s.copies,'--bin',s.bin,'--create'])).status,0);
 const copy=join(s.copies,s.id),argv=join(s.root,'argv.log');
 s.fake(`echo "$*" >> '${argv}'; echo 'LoadState=loaded'; echo 'WorkingDirectory=${copy}'; case "$*" in *mosaic-bus*) echo 'ExecStart={ path=${copy}/scripts/mosaic ; argv[]=${copy}/scripts/mosaic bus start mosaic-stack --pm ; }';; *) echo 'ExecStart={ path=/usr/bin/node ; argv[]=/usr/bin/node ${copy}/packages/webui/src/cli.mjs serve ; }';; esac\n`);
 const want=`bus: ${copy}\nConsole: ${copy}\nCLI: ${copy}\n`;
 let r=(await s.run('stack-copy.sh',['check','--copies',s.copies,'--bin',s.bin,'--units','external']));assert.equal(r.status,0,r.stderr);assert.equal(r.stdout,want);
 assert.deepEqual(readFileSync(argv,'utf8').trimEnd().split('\n'),[
  'show [email protected] -p LoadState -p WorkingDirectory -p ExecStart',
  'show mosaic-webui.service -p LoadState -p WorkingDirectory -p ExecStart']);
 rmSync(argv);
 for(const args of [[],['--units','user']]){
  r=(await s.run('stack-copy.sh',['check','--copies',s.copies,'--bin',s.bin,...args]));assert.equal(r.status,0,r.stderr);assert.equal(r.stdout,want);
  assert.deepEqual(readFileSync(argv,'utf8').trimEnd().split('\n'),[
   '--user show [email protected] -p LoadState -p WorkingDirectory -p ExecStart',
   '--user show mosaic-webui.service -p LoadState -p WorkingDirectory -p ExecStart']);
  rmSync(argv);
 }
});

// Rename r2 "Selector scopes and parser matrix": check takes --org as --business, each spelling once, both only
// with one value; a refused selector reads no unit, and --org is refused outside check as --business is.
test('rename r2: check takes --org as --business, once per spelling, and refuses before any unit read',async t=>{
 const s=setup(t);assert.equal((await s.run('stack-copy.sh',['copy',s.id,'--copies',s.copies])).status,0);
 assert.equal((await s.run('stack-copy.sh',['wrapper',s.id,'--copies',s.copies,'--bin',s.bin,'--create'])).status,0);
 const copy=join(s.copies,s.id),argv=join(s.root,'argv.log'),base=['check','--copies',s.copies,'--bin',s.bin];
 s.fake(`echo "$*" >> '${argv}'; echo 'LoadState=loaded'; echo 'WorkingDirectory=${copy}'; case "$*" in *mosaic-bus*) echo 'ExecStart={ path=${copy}/scripts/mosaic ; argv[]=${copy}/scripts/mosaic bus start demo ; }';; *) echo 'ExecStart={ path=/usr/bin/node ; argv[]=/usr/bin/node ${copy}/packages/webui/src/cli.mjs serve ; }';; esac\n`);
 const shows=b=>[`--user show mosaic-bus@${b}.service -p LoadState -p WorkingDirectory -p ExecStart`,'--user show mosaic-webui.service -p LoadState -p WorkingDirectory -p ExecStart'];
 for(const sel of [['--business','demo'],['--org','demo'],['--business','demo','--org','demo'],['--org','demo','--business','demo'],['--org','demo','--units','user']]){
  const r=await s.run('stack-copy.sh',[...base,...sel]);
  assert.equal(r.status,0,sel.join(' ')+r.stderr);assert.equal(r.stdout,`bus: ${copy}\nConsole: ${copy}\nCLI: ${copy}\n`,sel.join(' '));
  assert.deepEqual(readFileSync(argv,'utf8').trimEnd().split('\n'),shows('demo'),sel.join(' '));rmSync(argv);
 }
 // The selector may come before the other options too.
 let r=await s.run('stack-copy.sh',['check','--org','demo','--copies',s.copies,'--bin',s.bin]);assert.equal(r.status,0,r.stderr);
 assert.deepEqual(readFileSync(argv,'utf8').trimEnd().split('\n'),shows('demo'));rmSync(argv);
 for(const [sel,status,message] of [
  [['--business','demo','--org','beta'],4,'--business demo and --org beta conflict'],
  [['--org','beta','--business','demo'],4,'--org beta and --business demo conflict'],
  [['--business','demo','--business','demo'],4,'--business given twice'],
  [['--org','demo','--org','demo'],4,'--org given twice'],
  [['--org','demo','--business','demo','--org','demo'],4,'--org given twice'],
  [['--org'],4,'--org needs one value'],
  [['--business'],4,'--business needs one value'],
  [['--org',''],4,'--org needs one value'],
  [['--org','--units','user'],4,'--org needs one value, not --units'],
  [['--business','-x'],4,'--business needs one value, not -x'],
  [['--org','Demo'],1,'--org Demo is not valid'],
  [['--business','demo_x'],1,'--business demo_x is not valid'],
  [['--org','-demo'],4,'--org needs one value, not -demo'],
 ]){
  r=await s.run('stack-copy.sh',[...base,...sel]);
  assert.equal(r.status,status,sel.join(' '));assert.equal(r.stderr,`stack-copy: ${message}\n`,sel.join(' '));assert.equal(r.stdout,'',sel.join(' '));
  assert.ok(!existsSync(argv),`${sel.join(' ')} reads no unit`);
 }
 // Positional text after a selector value stays a usage error; --org outside check is one too.
 for(const args of [[...base,'--org','demo','beta'],['copy',s.id,'--copies',s.copies,'--org','demo'],['wrapper',s.id,'--copies',s.copies,'--bin',s.bin,'--org','demo'],['copy',s.id,'--business','demo']]){
  r=await s.run('stack-copy.sh',args);assert.equal(r.status,4,args.join(' '));assert.match(r.stderr,/^usage: stack-copy\.sh /,args.join(' '));
  assert.ok(!existsSync(argv),args.join(' '));
 }
});
test('rename r2: check --instance takes --org for its business and still needs one selector',async t=>{
 const s=setup(t);assert.equal((await s.run('stack-copy.sh',['copy',s.id,'--copies',s.copies])).status,0);
 assert.equal((await s.run('bootstrap.sh',['--instance','alpha'])).status,0);
 assert.equal((await s.run('stack-copy.sh',['wrapper',s.id,'--instance','alpha','--copies',s.copies,'--bin',s.bin])).status,0);
 const copy=join(s.copies,s.id),argv=join(s.root,'argv.log'),base=['check','--instance','alpha','--copies',s.copies,'--bin',s.bin];
 s.fake(`echo "$*" >> '${argv}'; echo 'LoadState=loaded';echo 'WorkingDirectory=${copy}';case "$*" in *mosaic-bus-alpha@demo*) echo 'ExecStart={ path=${copy}/scripts/mosaic ; argv[]=${copy}/scripts/mosaic bus start demo ; }';; *mosaic-webui-alpha*) echo 'ExecStart={ path=/usr/bin/node ; argv[]=/usr/bin/node ${copy}/packages/webui/src/cli.mjs serve ; }';; *) exit 1;; esac\n`);
 for(const sel of [['--org','demo'],['--business','demo','--org','demo']]){
  const r=await s.run('stack-copy.sh',[...base,...sel]);assert.equal(r.status,0,sel.join(' ')+r.stderr);
  assert.equal(r.stdout,`bus: ${copy}\nConsole: ${copy}\nCLI: ${copy}\n`,sel.join(' '));
  assert.equal(readFileSync(argv,'utf8').split('\n')[0],'--user show [email protected] -p LoadState -p WorkingDirectory -p ExecStart',sel.join(' '));rmSync(argv);
 }
 const r=await s.run('stack-copy.sh',base);assert.equal(r.status,4);assert.match(r.stderr,/^usage: stack-copy\.sh /);assert.ok(!existsSync(argv));
});

test('Vikunja 614: bundle and checkout copy leave an unreadable caller directory before find',async t=>{
 const s=setup(t),cwd=join(s.root,'unreadable');mkdirSync(cwd);
 const bundle=join(s.root,'release.bundle');git(s.repo,'bundle','create','-q',bundle,'refactor');
 // Enter while searchable, then reproduce a cwd inherited across a uid drop:
 // the caller can neither read nor search it. Absolute bundle lookup must work.
 const enter='cd "$1" && chmod 000 . && [ ! -r . ] && [ ! -x . ] && shift && exec "$@"';
 for(const [name,args] of [['bundle',['copy','--bundle',bundle,s.id]],['checkout',['copy',s.id]]]){
  const copies=join(s.root,`copies-${name}`);
  try{
   const r=await s.runChild('/bin/sh',['-c',enter,'stack-copy-cwd',cwd,join(s.repo,'scripts','stack-copy.sh'),...args,'--copies',copies]);
   assert.equal(statSync(cwd).mode&0o555,0,'the inherited cwd is neither readable nor searchable');
   assert.equal(r.status,0,r.stdout+r.stderr);
   assert.doesNotMatch(r.stderr,/Failed to (restore initial working|change) directory|Permission denied/);
   assert.ok(existsSync(join(copies,s.id,'scripts','mosaic')));
   assert.equal(statSync(join(copies,s.id)).mode&0o777,0o555);
  }finally{
   // Restore even after a failed assertion/mutant, before setup's recursive cleanup.
   chmodSync(cwd,0o700);
  }
 }
});

//643: the owned npm child announces readiness and waits for this parent. A
// synchronous runner cannot service that signal; no elapsed-time guess releases it.
test('copy waits for owned child completion after its readiness signal', {timeout:30000}, async t=>{
 const s=setup(t),path=join(s.root,'ready.sock'),sockets=new Set();
 let ready;
 const announced=new Promise(resolve=>{ready=resolve});
 const server=createServer(socket=>{sockets.add(socket);socket.on('error',()=>{});socket.once('close',()=>sockets.delete(socket));ready(socket)});
 await new Promise((resolve,reject)=>{server.once('error',reject);server.listen(path,resolve)});
 t.after(async()=>{for(const socket of sockets)socket.destroy();await new Promise(resolve=>server.close(resolve))});
 const npm=join(s.bin,'npm');
 const program=`const s=require('node:net').connect(${JSON.stringify(path)});s.on('error',()=>process.exit(1));s.once('data',()=>s.end());`;
 writeFileSync(npm,`#!/bin/sh\nexec '${process.execPath}' -e '${program.replaceAll("'", "'\\''")}'\n`);chmodSync(npm,0o755);
 const copying=s.run('stack-copy.sh',['copy',s.id,'--copies',s.copies]);
 const socket=await Promise.race([announced,copying.then(r=>{throw Error(`copy exited before readiness: ${r.status}`)})]);
 assert.ok(!existsSync(join(s.copies,s.id)),'no copy is published while npm is held');
 socket.write('continue');
 const result=await copying;
 assert.equal(result.status,0,result.stderr);
 assert.equal(statSync(join(s.copies,s.id)).mode&0o777,0o555);
});