[shhdwi]

Rebuilt on current main. Main now uploads only learnings committed at HEAD and already keeps learnings that look like they hold a secret on the laptop, so this PR is just the two pieces that were still missing.

What changes

• Deleted learnings come down from the web. If a learning or skill was at HEAD at the last sync on the same branch and isn't anymore, it's sent as removed. That covers a deleted file, and one now kept back because it looks like it holds a secret. Switching branches never takes anything down.
• The server hears how many were kept back. The count of learnings kept back for a secret is sent as held, so the server can show it.
• Sync at the end of each turn. The Stop hook starts a background sync, so a learning committed mid-session reaches the team at the end of that turn. The turn's skill runs and searches go with it, instead of waiting for the next session.

The server already accepts removed and held.

Also: a Windows lock fix. On Windows, opening a lock file that another process is still deleting fails with EPERM or EBUSY instead of EEXIST, and withLock treated that as an error. That broke the "real processes writing skills.json" test on Windows CI in 2 of 3 runs, and it can drop a real user's skill update. It's now treated as a lock someone else holds (Windows only), with a unit test in test/lock-held.test.ts.

Tested

• New test in test/trail-cloud.test.ts:
  • A deleted file stays up until the delete is committed, then comes down, and only once.
  • A learning that picks up a secret comes down and is counted as held, and the key never leaves the laptop.
  • A branch switch takes nothing down.
• Full suite: 3999/4010 pass. Two failures are the known graft-to-trail tests that only fail on this machine. The third is a compaction test that passes on its own (5/5), so it's flaky under load.
• End to end on a sandbox laptop against a local server: I committed a learning and synced (status kept), then deleted it, committed and synced again (status removed).

🤖 Generated with Claude Code

[trailhq-graft]

🌱 graft blast radius

3 areas changed → 6 areas can be affected. 65 dependent symbols, depth 2.
Tests: Stop Event has tests the diff did not touch; 2 areas updated their tests.
Tag: @anirudhkumar-nanonets — 4 of 9 areas · Rushabh Nagda — Workspace Sync, Cloud Pairing

flowchart TB
  A0(("Skill State Management<br/>36 symbols"))
  A1(("Initialization<br/>9 symbols"))
  A2(("Claude Integration<br/>8 symbols"))
  A3(("Trace Logging<br/>7 symbols"))
  A4(("Cloud Pairing<br/>3 symbols"))
  AX(("1 smaller area<br/>2 symbols"))
  classDef reached fill:#D9EDF3,stroke:#3AA7C9,stroke-width:1.5px,color:#0E313C;
  class A0,A1,A2,A3,A4 reached;
  classDef tail fill:#EEF2F3,stroke:#9AA4A9,stroke-width:1px,color:#3A4247;
  class AX tail;

Loading

Can be affected	Symbols	Nearest hop	Reached from
Skill State Management	36	src/skills/lesson-gate.ts:L165-L172 markLessonReceiptUsed — calls, depth 1	File Locking
Initialization	9	src/init/init-record.ts:L354-L366 updateInitRecord — calls, depth 1	File Locking
Claude Integration	8	src/claude/hooks.ts:L480-L560 main — calls, depth 1	Stop Event, File Locking
Trace Logging	7	src/trace/housekeeping.ts:L70-L85 housekeeping — calls, depth 1	File Locking
Cloud Pairing	3	src/cloud/other-repos.ts:L102-L135 setUpPicked — calls, depth 1	Workspace Sync
CLI	2	src/cli.ts:L2139-L2213 workspaceCommand — calls, depth 1	Workspace Sync

Who knows this code — 2 people across 9 areas

Area	Who knows it
Workspace Sync · changed	Rushabh Nagda — 2 commits, last 2d ago · @anirudhkumar-nanonets — 1 commit, last 10d ago
Claude Integration · affected	@anirudhkumar-nanonets — 16 commits, last yesterday
Cloud Pairing · affected	Rushabh Nagda — 1 commit, last 3d ago · @anirudhkumar-nanonets — 1 commit, last 10d ago
CLI · affected	@anirudhkumar-nanonets — 61 commits, last yesterday
File Locking · changed	only you — nobody else has touched these files
Stop Event · changed	only you — nobody else has touched these files
Skill State Management · affected	only you — nobody else has touched these files
Initialization · affected	only you — nobody else has touched these files
…1 further area

Ownership is git history over each area's own files, weighted towards recent work (120-day half-life). Merge commits and bots are dropped, and you are dropped from your own PR. A name with no @ has no GitHub handle in its commit email — tag them by hand, or add a .mailmap entry. A suggestion from history, not a CODEOWNERS rule.

All 65 dependent symbols, grouped by area

Skill State Management — 36 symbols in 13 files

• src/skills/lesson-gate.ts:L165-L172 — markLessonReceiptUsed (calls, depth 1)
  167: withLock(path, () => {
• src/skills/receipts.ts:L102-L109 — markReceiptUsed (calls, depth 1)
  104: withLock(path, () => {
• src/skills/settings.ts:L69-L81 — update (calls, depth 1)
  71: const done = withLock(path, () => {
• src/skills/state.ts:L95-L112 — updateSkillState (calls, depth 1)
  98: const done = withLock(path, () => {
• src/skills/store-fs.ts:L84-L89 — tryStoreLock (calls, depth 1)
  88: return withLock(join(skillsDir(env), '.store'), fn, waitMs);
• src/skills/update-gate.ts:L179-L186 — markUpdateReceiptUsed (calls, depth 1)
  181: withLock(path, () => {
• src/skills/value-line.ts:L131-L146 — updateValue (calls, depth 1)
  135: const done = withLock(path, () => {
• src/skills/lesson-gate.ts:L254-L317 — keepLessonCli (calls, depth 2)
• src/skills/lesson-gate.ts:L186-L203 — lessonGatePre (calls, depth 2)
• src/skills/lesson-gate.ts:L240-L251 — startWorked (calls, depth 2)
• src/skills/offer-retire.ts:L47-L57 — noteFiring (calls, depth 2)
• src/skills/save-gate.ts:L288-L362 — cliAdd (calls, depth 2)
• src/skills/save-gate.ts:L71-L76 — saveGateFor (calls, depth 2)
• src/skills/settings.ts:L158-L163 — noteGovernor (calls, depth 2)
• src/skills/settings.ts:L138-L148 — noteSkillsStarted (calls, depth 2)
• src/skills/settings.ts:L152-L156 — pauseRepo (calls, depth 2)
• src/skills/settings.ts:L111-L122 — setOffers (calls, depth 2)
• src/skills/settings.ts:L124-L129 — setSkillOff (calls, depth 2)
• src/skills/settings.ts:L103-L108 — setSkills (calls, depth 2)
• src/skills/staleness.ts:L92-L123 — cueFlush (calls, depth 2)
• src/skills/staleness.ts:L150-L160 — markMissingSaid (calls, depth 2)
• src/skills/staleness.ts:L135-L147 — markUnusedSaid (calls, depth 2)
• src/skills/state.ts:L117-L124 — change (calls, depth 2)
• src/skills/store-fs.ts:L167-L184 — startSkill (calls, depth 2)
• src/skills/store-fs.ts:L75-L81 — underStoreLock (calls, depth 2)
• src/skills/store-held.ts:L112-L118 — dropHeld (calls, depth 2)
• src/skills/store-held.ts:L103-L110 — markHeldShown (calls, depth 2)
• src/skills/store.ts:L252-L277 — moveStatus (calls, depth 2)
• src/skills/update-gate.ts:L274-L344 — cliUpdate (calls, depth 2)
• src/skills/update-gate.ts:L214-L228 — updateGate (calls, depth 2)
• src/skills/value-line.ts:L177-L186 — markValueSaid (calls, depth 2)
• src/skills/value-line.ts:L152-L164 — noteValue (calls, depth 2)
• src/skills/versions.ts:L261-L308 — adoptIfCopied (calls, depth 2)
• src/skills/versions.ts:L104-L106 — clearPending (calls, depth 2)
• src/skills/versions.ts:L119-L199 — commitLocked (calls, depth 2)
• src/skills/versions.ts:L228-L254 — writeProposal (calls, depth 2)

Initialization — 9 symbols in 7 files

• src/init/init-record.ts:L354-L366 — updateInitRecord (calls, depth 1)
  358: const done = withLock(path, () => {
• src/init/keep.ts:L372-L385 — claimKeep (calls, depth 1)
  374: const done = withLock(path, () => {
• src/init/candidates.ts:L207-L224 — seedNeverShown (calls, depth 2)
• src/init/handover.ts:L55-L90 — initHandover (calls, depth 2)
• src/init/keep.ts:L183-L251 — keepItems (calls, depth 2)
• src/init/keep.ts:L326-L369 — keepCommand (calls, depth 2)
• src/init/look-back-mine.ts:L118-L213 — lookBack (calls, depth 2)
• src/init/miners.ts:L129-L129 — WallsAdd (references, depth 2)
• src/init/run.ts:L183-L370 — finishLookBack (calls, depth 2)

Claude Integration — 8 symbols in 7 files

• src/claude/hooks.ts:L480-L560 — main (calls, depth 1)
  554: if (event === 'stop') { await handleStopEvent(input, dir); return; }
• src/claude/post-bash.ts:L168-L185 — postToolOffer (calls, depth 2)
• src/claude/prompt-skills.ts:L73-L109 — promptSkills (calls, depth 2)
• src/claude/start-init.ts:L49-L65 — keptNotice (calls, depth 2)
• src/claude/start-skills.ts:L76-L92 — sessionStartSkillsRun (calls, depth 2)
• src/claude/stop-skills.ts:L220-L226 — notePool (calls, depth 2)
• src/claude/stop-skills.ts:L52-L68 — stopSkillsRun (calls, depth 2)
  65: hookError('stop', e, env);
• src/claude/walls-hook.ts:L139-L194 — wallsAtStop (calls, depth 2)

Trace Logging — 7 symbols in 5 files

• src/trace/housekeeping.ts:L70-L85 — housekeeping (calls, depth 1)
  76: withLock(mark, () => {
• src/trace/pool.ts:L76-L101 — notePoolDay (calls, depth 1)
  80: const done = withLock(path, () => {
• src/trace/run-sheets.ts:L52-L57 — updateIndex (calls, depth 1)
  53: withLock(indexPath(env), () => {
• src/trace/skill-session.ts:L215-L246 — withSkillSession (calls, depth 1)
  218: const done = withLock(path, () => {
• src/trace/wall-state.ts:L217-L238 — noteWalls (calls, depth 1)
  225: const r = withLock(path, () => {
• src/trace/run-sheets.ts:L110-L137 — pruneRunSheets (calls, depth 2)
• src/trace/run-sheets.ts:L60-L95 — writeRunSheet (calls, depth 2)

…5 further symbols not listed.

Test signal per changed area — 2 ✓ · 1 ⚠

Reached = a node under a test path has a resolved edge into the changed symbol. It undercounts anything called indirectly — through a CLI, a spawned process or a dynamic import — so read a low ratio as “look here”, never as a coverage gate.

• ✓ File Locking — 2 of 2 reached · 1 test file changed here: test/lock-held.test.ts
• ✓ Workspace Sync — 2 of 3 reached · 1 test file changed here: test/trail-cloud.test.ts
  • not reached: currentBranch
• ⚠ Stop Event — 1 of 1 reached · 1 test file reaches it, none changed here

65 test suites also reference this code

85 symbols, kept out of the diagram and the table so they cannot crowd out the areas a reviewer has to look at.

• test/claude-hooks-1b-review-trust.test.ts
• test/claude-hooks-1b.test.ts
• test/claude-journeys-2.test.ts
• test/claude-journeys-3.test.ts
• test/claude-journeys-update.test.ts
• test/claude-post-bash-walls.test.ts
• test/claude-start-skills-1b.test.ts
• test/claude-stop-moments.test.ts
• test/claude-stop.test.ts
• test/cli-1b.test.ts
• test/cli-skills.test.ts
• test/init-b6-review.test.ts
• test/init-keep-cli-review.test.ts
• test/init-keep-cli.test.ts
• test/init-keep-gate-1b.test.ts
• test/init-keep-shell-noise.test.ts
• test/init-keep.test.ts
• test/init-miners.test.ts
• test/init-record.test.ts
• test/init-relay-review.test.ts
• …45 more

_{graft blast · origin/main...HEAD · depth 2 · 6 changed files}

Open the interactive graph → — click an area to see its dependent symbols at file:line.