vscode-cowriting-plugin/sessions/0059/SESSION-0059.0-TRANSCRIPT-2026-06-26T06-01--2026-06-26T08-32.md

Session 0059.0 — Transcript

App: vscode-cowriting-plugin Start: 2026-06-26T06-01 (PST) End: 2026-06-26T08-32 (PST) Type: planning-and-executing Posture: autonomous (yolo) Status: FINALIZED

Launch prompt

Plan-and-execute #64 (F12 inline editable proposed-change diff in the Markdown editor) from the graduated spec specs/coauthoring-inline-editor-diff.md, in isolated worktree vscode-cowriting-plugin-s58 (branch s58-inline-editor-diff), opened straight off brainstorming session 0058.

Plan

Implement #64 per spec: optimistic-apply the proposed change into the editor buffer (editable, tinted insertions + struck-red deletion hints), accept = finalize-in-place / reject = revert-in-place, Accept ▾/Reject ▾ (+ Accept-all /Reject-all) from both editor (CodeLens+QuickPick) and webview. Reverses INV-10/INV-32; INV-48..54. Implementation plan: docs/superpowers/plans/2026-06-26-inline-editor-diff.md.

Outcome — SHIPPED

#64 (F12) shipped to main — PR #66 squash 7b98249, issue auto-closed. Worktree built, subagent-driven (fresh implementer per task + two-stage review), adversarial final review, then merged through the concurrent #65 landing.

Turn-by-turn arc

1. Init — claimed session 0059 (0057 still in-flight; isolated worktree made it §5.4-safe). Synced worktree, npm ci, green baseline (242 unit).
2. Plan — read the whole subsystem (proposalController, trackChangesModel, attributionController, trackChangesPreview, preview.ts/css, extension.ts, package.json, E2E harness); wrote an 8-task TDD plan. Surfaced a spec refinement: optimistic apply must re-anchor the proposal to the applied text
   • store Proposal.original (F4's fp.text is the original, gone once applied).
3. Execute (subagent-driven, sonnet implementers):
   • T1 Proposal.original (model) — bea9fd5.
   • T2 setProposalApplied re-anchor helper — 92ff4dd.
   • T3 seam landBaseline opt + signalLanded — 6d54963. Surfaced the host-E2E was blocked by a macOS UNIX-socket-length EINVAL (the long worktree path). Fixed by pinning --user-data-dir to a short /tmp path (930b4ab) → host-E2E now launches from a worktree.
   • T4 optimisticApply/finalizeInPlace/revertInPlace/rejectAll — ddbbb7a (subagent caught a real keyOf vs uri.toString() test bug).
   • T5 EditorProposalController + pure decorationPlan — 8c6e782+e599284 (subagent added a setTimeout(0) apply-debounce for the batch race; updated 5 existing E2E for the INV-10 reversal — verified legitimate, not weakened).
   • T6 render-once INV-50 reconciliation — 6529332; I added a coloring- alignment fix (landedSpans via toLanded) the subagent's note flagged — 3805323.
   • T7 webview Accept ▾/Reject ▾ + dropdown + rejectAllProposals — f4594da.
4. Adversarial final review (opus subagent) — found a CRITICAL (revert target clobbered on save+reload, in-memory applied empty post-reload) and a MINOR (toolbar summary double-counts). Both fixed + a reload-safety regression E2E — 6560894. Verdict invariants INV-48..54 upheld; decorationPlan alignment verified correct.
5. Concurrency — session 0057 had merged #65 (unify Ask-Claude on a split-below webview; removed InlineAskController) to main mid-session. Merged origin/main into the branch, resolved the one extension.ts conflict (drop inlineAsk, keep EditorProposalController); suite green; squash-merged PR #66.
6. Hygiene — a git add -A during the merge accidentally tracked the spec copy in the code repo; removed it (PR #67 844a278) — specs are canonical in the content repo. Plan archived (8c14f54); spec patched to v0.1.1 with the re-anchor refinement and submitted (43913dc).

Cut state

• main @ 844a278 (clean, pushed). #64 closed.
• Tests: 249 unit + 87/5 host-E2E green, typecheck clean.
• Content repo: spec v0.1.1 (43913dc) + plan (8c14f54).
• Worktree removed.

Deferred decisions

• Re-anchor on optimistic apply (spec refinement, RESOLVED into v0.1.1). Added Proposal.original + re-fingerprint to the applied text; captured once → reload-safe. Folded into the spec.
• finalizeInPlace has no orphan re-resolve guard (CodeLens Accept), unlike the webview acceptById. Intentional — spec §2.2 says Accept keeps the human's in-place edits (which would orphan the exact-text fp) — but it's asymmetric. Left as-is; noted as a follow-up nit.
• Per-proposal webview carets always show Accept-all/Reject-all even at 1 pending (the toolbar button correctly hides <2). Cosmetic; not fixed.

Not done

• Manual smoke (interactive F5) — the live editor diff, CodeLens dropdown, both-surface parity, and save-while-pending need an Extension Development Host run (operator-side). No flotilla/PPE for this app — the PR-merge to main is the ship.

Next-session prompt

/goal Manually smoke-test #64 (F12 inline editor diff) in an Extension Development Host (F5) — verify the live editable diff + deletion hints, the Accept ▾/Reject ▾ CodeLens dropdown, editor↔webview parity, and save-while-pending — then start the next backlog item; #59 (P1, macOS Apple-Events prompt, likely @cline/sdk) is highest priority