add sessions/0012/SESSION-0012.0-TRANSCRIPT-2026-06-10T21-53--2026-06-10T22-18.md + replace placeholder/variant SESSION-0012.0-TRANSCRIPT-2026-06-10T21-53--INPROGRESS.md

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Ben Stull
2026-06-10 22:18:56 -07:00
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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 13 (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 56 (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.
```
@@ -1,23 +0,0 @@
# Session 0012.0 — Transcript
> App: vscode-cowriting-plugin
> Start: 2026-06-10T21-53 (PST)
> Type: planning-and-executing
> Status: **PLACEHOLDER — claimed at session start; finalized at session end.**
>
> This file reserves session ID 0012 for vscode-cowriting-plugin. The driver replaces this
> body with the full transcript and renames the file to its final
> SESSION-0012.0-TRANSCRIPT-2026-06-10T21-53--<end>.md form at session end.
## 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.)
```
## Deferred decisions
_Autonomous-mode low-confidence calls the driver made and would have
liked operator input on. Appended as the session runs; surfaced at
finalize. Empty if none._