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vscode-cowriting-plugin/sessions/0012/SESSION-0012.0-TRANSCRIPT-2026-06-10T21-53--2026-06-10T22-18.md
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Session 0012.0 — Transcript

App: vscode-cowriting-plugin Start: 2026-06-10T21-53 (PST) · End: 2026-06-10T22-18 (PST) Type: planning-and-executing Goal: implement Feature #12 (F4 propose/accept) per the graduated spec — leg 3 of the /goal F4 arc (0010 captured #12, 0011 graduated its spec). Outcome: F4 shipped — PR #13 merged to main (0ef70a0), issue #12 closed, full gate green.

Launch prompt

Implement Feature #12 (F4 propose/accept) per the graduated spec vscode-cowriting-plugin-content/specs/coauthoring-propose-accept.md — plan just-in-time from its §7.2 slices, then execute; done = unit + host E2E green and the live smoke shows propose → accept → Claude-attributed. (Leg 3 of /goal F4: session 0010 captured #12, session 0011 graduated its spec.)

Plan

  1. Write the just-in-time implementation plan from spec §7.2's five slices (docs/superpowers/plans/2026-06-10-f4-propose-accept.md, committed on the feature branch; archived to content plans/ at finalize). ✓
  2. Execute on feat/f4-propose-accept: SLICE-1 proposals model + store prune → SLICE-2 ProposalController core → SLICE-3 review UI + accept/reject → SLICE-4 liveTurn propose-by-default flip + smoke doc → SLICE-5 host E2E + README. TDD per slice; full gate green before merge. ✓ (one amendment)
  3. PR → merge to main (autonomous posture). ✓ (PR #13)
  4. Finalize: archive plan, memory, publish transcript. ✓

Pre-session state

Clean pushed main (d30ebbb after claim). Spec graduated minutes earlier (session 0011, content c55a681). Anchor #12: type/feature WITH approved Solution Design → R2/R3 gate passes for planning-and-executing.

Turn-by-turn arc

  1. Init. Claimed 0012 (--type planning-and-executing); no in-flight sessions; branched feat/f4-propose-accept.
  2. Plan. Read the full shipped F3 surface (model/store/anchorer/ pendingEdits/attributionController/threadController/liveTurn/extension/ package.json/E2E suites) and wrote the 8-task plan with complete code per task (superpowers:writing-plans), committed debd09f.
  3. Tasks 1–3 (SLICE-1, TDD). Typed Proposal + stable serialization (652f861; the runtime test passed early — vitest erases types — so the red step was pinned at the typecheck layer); store anchor-prune learns proposal anchorIds, closing the F3 TODO at store.ts:65 (d5beb61); proposalModel.ts add/remove/fenced-diff-body helpers (f474684).
  4. Task 4 (SLICE-2/3). ProposalController (4efd34f): propose ingress (INV-10, caller-built fingerprint), persistence at propose time, resolve-or-flag ladder (stale/orphaned undecidable-as-accept, INV-11), second Comments controller + amber decoration + status-bar stale count, accept (exact resolve → seam with expectedVersion → remove) / reject. Proposal anchors deliberately NOT re-fingerprinted on save (the fingerprint IS the staleness oracle).
  5. Tasks 5–6 (SLICE-3/4). package.json contributes (✓/✗ thread-title actions gated on commentThread =~ /^pending$/), extension wiring + no-workspace stubs + cowriting.proposeAgentEdit E2E command + API export (4688ac8); editSelection flipped propose-by-default — fingerprint captured BEFORE the turn, no-change turns informational, seam fires only on accept (452c071).
  6. Task 7 (SLICE-5) — found a real F3 bug. First E2E run: accept's text landed but attribution came back as FIVE fragmented HUMAN spans. Instrumented the assertion → diagnosis: the host word-diffs one applied WorkspaceEdit into several minimal hunks when old/new share interior tokens; the registry's per-hunk exact match missed (F3's test strings never shared tokens — latent since F3). AMENDMENT 1: PendingEditRegistry.matchEvent (event-level net-effect match: every hunk inside the registered full pre-edit range + equal net delta; one applyEdit = one change event) replaces match; AttributionController.onDidChange matches the event once and applies the full intended replacement as one algebra edit. Registry unit tests rewritten; 6-test F4 E2E suite + fixture
    • no-workspace command-list update all green (8fdea97): 16+3 passing.
  7. Task 8. Docs (MANUAL-SMOKE-F4.md; F3 smoke noted superseded steps; README F4 section; playground loop updated) (169abf0). Full gate: typecheck · 75/75 vitest · both bundles · 16+3 host E2E. Scripted live smoke green (run_8xPNs1QJ, 34.6s, exit 0).
  8. Ship. Pushed; Gitea PR #13 created and merged (merge commit 0ef70a0); Closes #12 closed the Feature; branch deleted local+remote; main clean. Plan archived to content plans/2026-06-10-f4-propose-accept.md (23c4b9d).

Pipeline note (§9)

A VS Code extension: no deploy stage, no PPE — this app's required tier is the host E2E suite (F2/F3 precedent), which ran green twice (suite + full gate). The live-LLM leg is the documented manual smoke; scripted half performed this session, in-editor click-through on the operator's plate.

Deferred decisions

  • Inline execution chosen over subagent-driven (the plan header recommends subagent-driven-development): tasks were tightly coupled to files already in the driver's context and strictly sequential — judged faster and no less safe inline. TDD discipline kept per task.
  • Seam fix scope (AMENDMENT 1): replaced match outright instead of keeping it alongside matchEvent — per-hunk matching is strictly weaker and keeping both invites drift. F3's registry unit tests were rewritten to the new contract. Judged correct, not just convenient; flagging because it reshapes an F3-shipped internal.
  • In-editor propose→accept GUI smoke not performed (cannot click EDH buttons headlessly): host E2E pins every step except the literal button click, and the scripted live smoke covers the LLM leg. Documented in docs/MANUAL-SMOKE-F4.md with a smoke-log table for the operator.

Cut state (end of session)

Item State
PR #13 (F4) Merged to main (0ef70a0); branch deleted
Issue #12 Closed by the merge
Plugin repo main Clean, pushed; gate green
Plan Archived: content plans/2026-06-10-f4-propose-accept.md (23c4b9d)
Spec content specs/coauthoring-propose-accept.md (graduated, c55a681)
Epic #1 All three acceptance pillars shipped (F2 threads · F3 attribution · F4 propose/accept)
Content repo Two pre-existing uncommitted issue drafts (Author's plate, unchanged)

What lands on the operator's plate

  • Run the in-editor propose→accept smoke once (docs/MANUAL-SMOKE-F4.md) and log it in its table.
  • Review the autonomous calls: spec graduated without interactive review (session 0011), AMENDMENT 1 reshaped the F3 seam registry internals.
  • The two uncommitted content-repo issue drafts (f3-live-attribution.md, f4-propose-accept.md) remain yours to publish or discard.

Prompt the operator can paste into the next session

/goal Capture Feature F5 (cross-rung git-native persistence format + round-trip to the Gitea substrate rung, per coauthoring-inner-loop.md §9 OPEN→F5, coauthoring-propose-accept.md §9 OPEN→F5, and rfc-app#46) as a typed issue under Epic #1 on benstull/vscode-cowriting-plugin, then brainstorm its Solution Design spec in a follow-up session.
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