Session 0007.0 — Transcript

App: vscode-cowriting-plugin Start: 2026-06-10T09-21 (PST) · End: 2026-06-10T11-14 (PST) Type: planning-and-executing Driver: Claude (Opus 4.8), autonomous posture · Operator: Ben Stull

Launch prompt

Build F3 (#6) — live human/Claude attribution — in a planning-and-executing session: write the just-in-time plan from vscode-cowriting-plugin-content/specs/coauthoring-attribution.md (§7.2 SLICE-1..6) and execute it on the F2 model. Host E2E drives the applyAgentEdit seam (no LLM in CI); the live claude-code turn gets a documented manual smoke.

Pre-state

main at 8d406a8 → fast-forwarded to 9c7860a (session-history commits only); tree clean. Session 0005 in flight (--INPROGRESS, not adopted — noted, proceeded per autonomous concurrency rule; F3 was 0006's designated next step so overlap risk was judged low).
Spec coauthoring-attribution.md graduated by session 0006; pulled into the local content clone (62fe685..b7637d9).
Anchor: Feature #6 with graduated Solution Design — §3.4 gate satisfied.

Arc (turn-by-turn)

Init — claimed session 0007 (placeholder 9c7860a), verified clean baseline, confirmed memory resume pointer == launch goal.
Grounding — read the F3 spec + the full F2 surface (model / anchorer / store / threadController / extension / E2E harness). Probed installed @cline/sdk 0.0.46 directly + via an Explore subagent: Agent runtime, claude-code ∈ BUILT_IN_PROVIDER_IDS, modelIds sonnet/opus/haiku, AgentRunResult.runId.
Plan (superpowers:writing-plans) — wrote docs/superpowers/plans/2026-06-10-f3-live-attribution.md: Tasks 0–8 over SLICE-1..6 with full code, shared design rules (edit normalization, span algebra, sidecar co-ownership via store.update), verified-SDK-facts header. Seeded the placeholder's ## Plan block.
Execution (superpowers:subagent-driven-development, branch feat/f3-live-attribution; every task two-stage reviewed — spec compliance then quality — with fix→re-review loops):
- T1+2 (SLICE-1/2) 4afe97c,363fd09 — typed AttributionRecord + tracker span algebra; 44/44 unit. Approved.
- T3 (SLICE-3a) decdfbf — PendingEditRegistry + CoauthorStore.update section merge; ThreadController.persist refactor; 49/49. Review surfaced two forward risks → plan Amendment 1 (shared watcher + store-level self-writes + unconditional unregister).
- T4+5 (SLICE-3b/4) d05cb0f,4b27acf — AttributionController (seam, tracking, decorations, toggle, save/load/orphan, status bar) per Amendment 1; persistence decision-logic tests; 56/56. Quality review demanded fixes → 20b709f (counted self-writes Map, deletion-to-empty persistence via hadAttributions, render-all-visible-editors, defensive change ordering). Re-review approved.
- T6 (SLICE-5) c08dc07 — liveTurn.ts (Agent, claude-code, sonnet), cowriting.editSelection, ESM smoke entry + script, manual smoke doc. Deviation (correct): SDK success status is "completed", not the plan's "success". Live smoke PASSED on this machine (run_g_rYKGYl, 6.9s) — §7.3's "smoke performed once" met. Failure-path attempts could not simulate sign-out (SDK discovers the install under ~/.local/share/claude/versions/… despite PATH/symlink hiding) — doc corrected to observed reality (258d1fa). Review fixes fe23ffa (fence-aware extraction keyed on the selection; editSelection scheme + re-check guards; empty-replacement guard).
- T7 (SLICE-6) — host E2E BLOCKED first run, exposing two real host-only product bugs invisible to units: (a) change events arrive before the dirty flag flips, so isDirty misclassified first edits as disk syncs; (b) VS Code diff-minimizes WorkspaceEdits, so the seam's exact-match missed and agent edits mis-attributed to the human (INV-9 break). Plan Amendment 2 → fixes 2604ab4 (disk-compare sync detection; self-minimized seam edits with intent-honest full-extent attribution); E2E suite committed fc5fde1; 9/9. Hardening 41b1cb4 (observable seam misses, cheaper disk compare, ordering notes).
- Ship prep — README 644e7b7; final whole-branch review (spec §8 traceability walked row-by-row: all delivered; ready-to-merge yes); polish d851942 (active-editor status bar; E2E for the command wrapper + toggle, PUC-5); plan committed 9deb1f7.
Ship — pushed; PR #7 created and merged (7509120); issue #6 auto-closed. Post-merge full gate on main: typecheck clean · vitest 69/69 · both bundles · host E2E 10/10 (F2 4/4 + F3 6/6). Branch deleted local+remote.
Finalize — plan archived to content plans/ (8d9e86c); memory updated (f3-live-attribution-shipped + index); this transcript published.

Pipeline status (§9)

Localhost + E2E: green (the suites above). This app is a non-shippable VS Code extension POC — no PPE/prod stages exist and nothing deploys; the live-turn tier is covered by the documented manual smoke instead of CI (spec §6.8/§7.3).

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.

Self-write suppression = counted Map, accepting the watcher-coalescing caveat. One save can write the sidecar twice (Thread + Attribution controllers); chose a per-path write counter consumed per watcher event. If VS Code coalesces the two write events into one, a count strands and the next genuine external change is suppressed once (inverse of the old Set's leak). Judged acceptable for F3 over a TTL/timestamp scheme; revisit if thread-UI flicker or missed reloads surface in practice.
Span-id stability across coalesce not guaranteed. When an inserted span merges with a persisted one, the earlier-by-offset span's id wins; a lost persisted id just means a fresh anchor on next save (sidecar diff churn, no correctness impact). Left as-is per reviewer triage.
Agent spans use intent-honest extent. VS Code diff-minimizes WorkspaceEdits, so the seam self-minimizes for transport but attributes the agent's FULL intended replacement (incl. chars coinciding with prior text). Ratified against PUC-2 ("the machine edit lands Claude-attributed" — the turn's replacement is the unit); the alternative (transport-narrow spans) would tint only the diff of a rewrite, which reads as noise.
Disk-compare sync detection replaces the isDirty heuristic (host delivers change events before flipping the dirty flag): a !isDirty change whose buffer equals disk = sync (re-resolve); otherwise attribute. Sync read of the file on those rare events accepted.

Cut state

main = origin/main = 7509120; tree clean; feature branch deleted; Epic #1 the only open issue. Known minor non-blockers (final review): non-UTF-8 revert misclassification (fail-open direction), undo-of-agent-edit attributes restored text to the human (defensible; note for F4), engines.vscode 1.90 vs node22 target (cosmetic).
Artifacts: spec (content specs/coauthoring-attribution.md, graduated) · plan (content plans/2026-06-10-f3-live-attribution.md, archived, also in repo docs/superpowers/plans/) · smoke log (docs/MANUAL-SMOKE-F3.md).

Operator plate

Nothing required. Optional: exercise the signed-out live-turn failure path on a machine without Claude Code (the one smoke row not executable from inside a live session); react to the four deferred decisions above if any reads wrong.

Next-session prompt

/goal Capture Feature F4 (propose/accept on the applyAgentEdit seam, per coauthoring-inner-loop.md §9 OPEN→F4 and coauthoring-attribution.md §9) 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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