test(mosaic): gate #797 ledger upgrade-survival + harden manifest parity (#791)

Fold the Mos-elevated #797 Runtime-Ledger survival sentinel into #791 PR1 and
harden the .txt-format parity test per the accepted-format conditions.

- framework-manifest.txt: annotate the existing fleet/run/** operator carve-out
  to name the #797 ledger (fleet/run/sessions/) so it reads as load-bearing.
  The glob already matches the #797 spec exactly — no location divergence.
- HARD GATE (test-upgrade-manifest-guard.sh): seed a populated ledger
  (events.ndjson journal + ledger.json projection, 0600 under 0700) as an
  operator sentinel; assert byte-identical + mtime-unchanged + dir-perms
  unchanged after a keep-mode upgrade. Relabel the prune check as the explicit
  negative control. 48 -> 58 checks.
- Parity (manifest-parity.spec.ts): add format-edge fixtures driven through
  BOTH resolvers via MANIFEST_FILE — comments/blanks/whitespace, duplicate and
  overlapping globs (deny-wins), section/glob-ordering independence, and an
  explicit UNKNOWN->operator negative probe; add ledger probe paths.
- manifest.spec.ts: isolate the carve-out's load-bearing value with a resolver
  red->green — under a hypothetical fleet/** framework glob, the ledger is
  pruned WITHOUT the fleet/run/** carve-out and protected WITH it (deny-wins).

Gates: typecheck, lint, format:check green; mosaic vitest 1069 passed;
HARD GATE 58/58; migration 21/21. Commits forward on 34e55d4a (no rebase).

Part of #791
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

packages/mosaic/framework/framework-manifest.txt

@@ -75,6 +75,11 @@ tools/_lib/credentials.json
 fleet/roster.yaml
 fleet/roster.json
 fleet/agents/**
+# Runtime state, incl. the #797 Runtime Session Ledger at fleet/run/sessions/
+# (events.ndjson journal + ledger.json projection). This carve-out is the
+# mechanism that makes the ledger upgrade-safe: an upgrade that wiped it would
+# defeat its reason to exist. The HARD GATE (test-upgrade-manifest-guard.sh)
+# proves a populated ledger survives byte-identical + mtime-unchanged.
 fleet/run/**
 fleet/backlog/**
 fleet/roles.local/**

packages/mosaic/framework/tools/quality/scripts/test-upgrade-manifest-guard.sh

@@ -27,7 +27,8 @@ SECRET='SUPER-SECRET-TOKEN-do-not-log-3f9a'
 seed_home() {
   local H="$1"
   mkdir -p "$H/agents" "$H/policy" "$H/memory" "$H/tools/_lib" \
-           "$H/fleet/agents" "$H/harvester" "$H/unknown-operator-dir" "$H/guides"
+           "$H/fleet/agents" "$H/fleet/run/sessions" "$H/harvester" \
+           "$H/unknown-operator-dir" "$H/guides"
   printf '# persona\n' > "$H/SOUL.md"          # marks a recognized existing install → keep mode
   printf 'MODEL=opus\n' > "$H/agents/coder0.conf"
   printf '# operator policy\n' > "$H/policy/custom.md"
@@ -39,6 +40,23 @@ seed_home() {
   printf '# harvester SOP\n' > "$H/harvester/sop.md"
   printf 'operator data the manifest never anticipated\n' > "$H/unknown-operator-dir/x"
   printf 'version: 1\nagents:\n  - name: mine\n' > "$H/fleet/my-fleet.yaml"
+
+  # #797 Runtime Session Ledger (Mos-elevated to a #791 PR1 merge-blocker): a
+  # populated ledger under fleet/run/sessions/ must survive the upgrade — a
+  # runtime ledger an upgrade rsync can wipe is worthless. Seed it exactly as
+  # #797 writes it: a non-empty append journal + a non-empty compacted
+  # projection, files 0600 under a 0700 dir.
+  printf '%s\n%s\n%s\n' \
+    '{"seq":1,"kind":"session.spawn","node":"sess-42","generation":7}' \
+    '{"seq":2,"kind":"lease.grant","node":"sess-42","lease":"web1"}' \
+    '{"seq":3,"kind":"dispatch.create","from":"sess-42","to":"disp-9"}' \
+    > "$H/fleet/run/sessions/events.ndjson"
+  printf '%s\n' \
+    '{"generation":7,"nodes":[{"id":"sess-42","kind":"session"}],"edges":[{"from":"sess-42","to":"disp-9","kind":"dispatch"}]}' \
+    > "$H/fleet/run/sessions/ledger.json"
+  chmod 0700 "$H/fleet/run" "$H/fleet/run/sessions"
+  chmod 0600 "$H/fleet/run/sessions/events.ndjson" "$H/fleet/run/sessions/ledger.json"
+
   # A retired framework file inside a shipped subtree (absent from source) — must be pruned.
   printf '# retired guide\n' > "$H/guides/RETIRED-OLD-GUIDE.md"
   echo 3 > "$H/.framework-version"
@@ -55,6 +73,9 @@ OPERATOR_SENTINELS=(
   "harvester/sop.md"
   "unknown-operator-dir/x"
   "fleet/my-fleet.yaml"
+  # #797 Runtime Session Ledger — populated journal + projection must survive.
+  "fleet/run/sessions/events.ndjson"
+  "fleet/run/sessions/ledger.json"
 )
 
 run_matrix() {
@@ -69,6 +90,10 @@ run_matrix() {
     stat -c %Y "$H/$rel" > "$E/$(echo "$rel" | tr / _).mt"
   done
 
+  # Snapshot the ledger directory permission bits (#797 assert: perms unchanged).
+  local before_dirperm after_dirperm
+  before_dirperm=$(stat -c %a "$H/fleet/run/sessions")
+
   # The upgrade under test (keep + sync-only = the `mosaic update` reseed path).
   MOSAIC_HOME="$H" MOSAIC_INSTALL_MODE=keep MOSAIC_SYNC_ONLY=1 "$@" bash "$INSTALL" >"$OUT" 2>&1
 
@@ -84,10 +109,18 @@ run_matrix() {
       "[ '$before_mt' = '$after_mt' ]"
   done
 
-  # Positive controls: the framework tree still updates, retired file pruned.
-  chk "[$label] framework file present after upgrade (guides synced)" \
+  # #797 assert 7: the ledger directory's permission bits are unchanged.
+  after_dirperm=$(stat -c %a "$H/fleet/run/sessions" 2>/dev/null || echo MISSING)
+  chk "[$label] ledger dir perms unchanged (#797): $before_dirperm" \
+    "[ '$before_dirperm' = '$after_dirperm' ]"
+
+  # Positive controls / negative controls — prove the test discriminates: the
+  # upgrade DOES write and prune framework-owned paths, so the operator sentinels
+  # (incl. the #797 ledger) survive because of the manifest, not because the
+  # upgrade is a no-op.
+  chk "[$label] positive control: framework file present after upgrade (guides synced)" \
     "[ -f '$H/guides/E2E-DELIVERY.md' ]"
-  chk "[$label] retired framework file inside a subtree is pruned" \
+  chk "[$label] negative control: retired framework file inside a subtree IS pruned" \
     "[ ! -f '$H/guides/RETIRED-OLD-GUIDE.md' ]"
   chk "[$label] manifest itself is installed" "[ -f '$H/framework-manifest.txt' ]"
 

packages/mosaic/src/framework/manifest-parity.spec.ts

@@ -1,9 +1,15 @@
-import { describe, it, expect } from 'vitest';
+import { afterAll, describe, it, expect } from 'vitest';
 import { execFileSync } from 'node:child_process';
-import { existsSync } from 'node:fs';
+import { existsSync, mkdtempSync, rmSync, writeFileSync } from 'node:fs';
+import { tmpdir } from 'node:os';
 import { join } from 'node:path';
 import { fileURLToPath } from 'node:url';
-import { loadManifest, resolveOwnership, frameworkSubtreeRoots } from './manifest.js';
+import {
+  loadManifest,
+  parseManifest,
+  resolveOwnership,
+  frameworkSubtreeRoots,
+} from './manifest.js';
 
 /**
  * Bash ↔ TS parity (#791, §6.1).
@@ -34,6 +40,14 @@ function bashResolve(relPath: string): string {
   }).trim();
 }
 
+/** Drive the bash resolver against an arbitrary manifest file (MANIFEST_FILE override). */
+function bashResolveWith(manifestFile: string, relPath: string): string {
+  return execFileSync('bash', [MANIFEST_SH, 'resolve', relPath], {
+    encoding: 'utf-8',
+    env: { ...process.env, MANIFEST_FILE: manifestFile },
+  }).trim();
+}
+
 function bashSubtreeRoots(): string[] {
   return execFileSync('bash', [MANIFEST_SH, 'subtree-roots'], { encoding: 'utf-8' })
     .split('\n')
@@ -75,6 +89,9 @@ const PROBE_PATHS = [
   'fleet/roster.json',
   'fleet/agents/coder0.env',
   'fleet/run/coder0.hb',
+  // #797 Runtime Session Ledger — must resolve operator on both paths.
+  'fleet/run/sessions/events.ndjson',
+  'fleet/run/sessions/ledger.json',
   'fleet/backlog/data.db',
   'fleet/roles.local/custom.md',
   // unanticipated → operator (fail-safe)
@@ -106,3 +123,130 @@ describe.skipIf(!hasBash)('bash ↔ TS manifest parity (§6.1)', () => {
     expect(bashSubtreeRoots().sort()).toEqual(frameworkSubtreeRoots(manifest).sort());
   });
 });
+
+/**
+ * Format-safety parity (#791, Decision 1 — the `.txt` line-oriented format is
+ * accepted only because both resolvers agree on the format edge cases a hand-
+ * edited text file invites: comments, blank lines, stray whitespace, duplicate
+ * and overlapping globs (where deny-wins must resolve), and section ordering.
+ * Each fixture is driven through BOTH resolvers (bash via MANIFEST_FILE, TS via
+ * parseManifest) and must agree AND land on the expected ownership. Any
+ * divergence here means the format itself is unsafe and must be fixed/converted.
+ */
+describe.skipIf(!hasBash)('bash ↔ TS manifest format-edge parity (§6.1, Decision 1)', () => {
+  const tmp = mkdtempSync(join(tmpdir(), 'mf-parity-'));
+  afterAll(() => rmSync(tmp, { recursive: true, force: true }));
+
+  let fixtureSeq = 0;
+  function writeFixture(text: string): string {
+    const file = join(tmp, `manifest-${fixtureSeq++}.txt`);
+    writeFileSync(file, text);
+    return file;
+  }
+
+  // Both resolvers must agree, and on the expected value, for every probe.
+  function expectParity(text: string, cases: ReadonlyArray<readonly [string, string]>): void {
+    const file = writeFixture(text);
+    const manifest = parseManifest(text);
+    for (const [path, expected] of cases) {
+      const ts = resolveOwnership(manifest, path);
+      const bash = bashResolveWith(file, path);
+      expect(bash, `bash disagrees with TS on ${path}`).toBe(ts);
+      expect(ts, `ownership of ${path}`).toBe(expected);
+    }
+  }
+
+  it('tolerates comments, blank lines, and leading/trailing whitespace identically', () => {
+    // Entries and headers are padded with spaces/tabs; comments and blanks are
+    // interleaved. Both resolvers must trim and ignore them the same way.
+    const text = [
+      '# leading comment',
+      '   ',
+      '\t[framework]  ',
+      '   tools/**   ',
+      '# mid-section comment',
+      '',
+      '\tguides/**\t',
+      '  [operator] ',
+      '\ttools/_lib/credentials.json  ',
+      '*.local.md',
+      '',
+    ].join('\n');
+    expectParity(text, [
+      ['tools/git/pr-create.sh', 'framework'],
+      ['guides/E2E-DELIVERY.md', 'framework'],
+      ['tools/_lib/credentials.json', 'operator'], // deny-wins carve-out inside tools/**
+      ['SOUL.local.md', 'operator'],
+      ['nowhere/unknown.md', 'operator'], // negative probe: matches NO rule → operator
+    ]);
+  });
+
+  it('resolves deny-wins for overlapping and duplicate globs identically', () => {
+    // Framework claims tools/** (twice) and the overlapping tools/git/**;
+    // operator carves out tools/_lib/**. Operator must win the overlap on both.
+    const text = [
+      '[framework]',
+      'tools/**',
+      'tools/**', // duplicate — must not change resolution
+      'tools/git/**', // overlaps tools/**
+      '[operator]',
+      'tools/_lib/**',
+    ].join('\n');
+    expectParity(text, [
+      ['tools/git/pr-create.sh', 'framework'],
+      ['tools/other.sh', 'framework'],
+      ['tools/_lib/credentials.json', 'operator'], // deny-wins over both framework globs
+      ['tools/_lib/nested/deep.json', 'operator'],
+    ]);
+  });
+
+  it('is independent of section and glob ordering', () => {
+    // Same rule set, operator section first and entries reordered. Resolution
+    // must be identical because deny-wins checks all operator globs before any
+    // framework glob — order within or between sections cannot matter.
+    const forward = [
+      '[framework]',
+      'guides/**',
+      'tools/**',
+      '[operator]',
+      'tools/_lib/credentials.json',
+      '*.local.md',
+    ].join('\n');
+    const reversed = [
+      '[operator]',
+      '*.local.md',
+      'tools/_lib/credentials.json',
+      '[framework]',
+      'tools/**',
+      'guides/**',
+    ].join('\n');
+    const probes: ReadonlyArray<readonly [string, string]> = [
+      ['tools/git/pr-create.sh', 'framework'],
+      ['guides/E2E-DELIVERY.md', 'framework'],
+      ['tools/_lib/credentials.json', 'operator'],
+      ['SOUL.local.md', 'operator'],
+      ['unanticipated/path.md', 'operator'],
+    ];
+    expectParity(forward, probes);
+    expectParity(reversed, probes);
+    // And the two orderings agree path-for-path on both resolvers.
+    const fFile = writeFixture(forward);
+    const rFile = writeFixture(reversed);
+    for (const [path] of probes) {
+      expect(bashResolveWith(fFile, path)).toBe(bashResolveWith(rFile, path));
+    }
+  });
+
+  it('defaults an unmatched path to operator on both resolvers (UNKNOWN → operator)', () => {
+    // A manifest that names only a narrow framework slice. Everything else —
+    // including paths under no rule at all — must fail safe to operator.
+    const text = ['[framework]', 'guides/**', '[operator]', 'agents/**'].join('\n');
+    expectParity(text, [
+      ['guides/x.md', 'framework'],
+      ['agents/coder0.conf', 'operator'],
+      ['totally/unlisted/file.txt', 'operator'], // negative probe
+      ['fleet/run/sessions/ledger.json', 'operator'], // unlisted → operator
+      ['README.md', 'operator'],
+    ]);
+  });
+});

packages/mosaic/src/framework/manifest.spec.ts

@@ -154,6 +154,46 @@ describe('planPrune (pure prune planner)', () => {
   });
 });
 
+// The #797 Runtime Session Ledger lives at fleet/run/sessions/. Today it is safe
+// twice over: it matches the explicit `fleet/run/**` operator carve-out AND, even
+// without it, the UNKNOWN→operator fail-safe. This test isolates the CARVE-OUT's
+// load-bearing value by simulating a future framework author who broadens fleet
+// ownership to `fleet/**`: without the operator carve-out the ledger would resolve
+// framework and be pruned; deny-wins is what keeps it protected. If deleting the
+// `fleet/run/**` line ever stops turning this test red, the carve-out has silently
+// stopped mattering — which is exactly the #797 regression we are gating against.
+describe('fleet/run/** carve-out is load-bearing for the #797 ledger (deny-wins)', () => {
+  const LEDGER = ['fleet/run/sessions/events.ndjson', 'fleet/run/sessions/ledger.json'];
+  // A framework that (hypothetically) ships all of fleet/** as a subtree.
+  const withoutCarveOut: FrameworkManifest = {
+    framework: ['fleet/**'],
+    operator: [],
+  };
+  const withCarveOut: FrameworkManifest = {
+    framework: ['fleet/**'],
+    operator: ['fleet/run/**'],
+  };
+
+  it('RED without the carve-out: the ledger resolves framework and is pruned', () => {
+    for (const p of LEDGER) expect(resolveOwnership(withoutCarveOut, p)).toBe('framework');
+    const del = planPrune({ manifest: withoutCarveOut, targetPaths: LEDGER, sourcePaths: [] });
+    expect(del.sort()).toEqual([...LEDGER].sort());
+  });
+
+  it('GREEN with the carve-out: deny-wins makes the ledger operator and unprunable', () => {
+    for (const p of LEDGER) expect(resolveOwnership(withCarveOut, p)).toBe('operator');
+    const del = planPrune({ manifest: withCarveOut, targetPaths: LEDGER, sourcePaths: [] });
+    expect(del).toEqual([]);
+  });
+
+  it('the SHIPPED manifest reserves fleet/run/** so the ledger is operator-owned', () => {
+    const shipped = loadManifest(FRAMEWORK_ROOT);
+    for (const p of LEDGER) expect(resolveOwnership(shipped, p)).toBe('operator');
+    // And it is structurally unreachable by pruning even if it were in a subtree.
+    expect(planPrune({ manifest: shipped, targetPaths: LEDGER, sourcePaths: [] })).toEqual([]);
+  });
+});
+
 describe('frameworkSubtreeRoots', () => {
   it('returns only the /** subtree roots, not single-file entries', () => {
     const m = parseManifest(SAMPLE);