#40 (WIP, UNVERIFIED): restore exact author attribution on undo/redo

Follow-up to #38. #38 made undo/redo re-inserted text neutral (no false human coloring); #40 restores its EXACT prior attribution so Claude's restored text is blue again, the human's green. Mechanism — text-keyed attribution snapshots: per-doc Map<documentText, spans>, snapshotted after every forward edit + at load; on undo/redo, after the #38 geometry reconcile, if a snapshot's text equals the current buffer the spans are restored exactly (offsets valid — identical text). Robust to VS Code undo coalescing (only the resulting-text-matching event restores); far-back/evicted states fall back to #38 neutral. History bounded (ATTR_HISTORY_MAX, oldest evicted). NOT MERGED / NOT VERIFIED END-TO-END: 222 unit + typecheck green, but the #40 host E2E (and the pre-existing #38 undoMarks E2E) depend on executeCommand("undo"), which is broken in this test environment — the untouched #38 test fails identically on clean main (the known undoMarks flake, now deterministic). Clearing .vscode-test/user-data (the usual remedy) is permission-blocked here. The operator should verify in a working E2E environment before merging. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-13 08:56:43 -07:00
15 changed files with 160 additions and 690 deletions
@@ -202,8 +202,7 @@
    "watch": "node esbuild.mjs --watch",
    "typecheck": "tsc --noEmit",
    "test": "vitest run",
-    "clean:e2e": "node -e \"require('fs').rmSync('out/test',{recursive:true,force:true})\"",
+    "pretest:e2e": "npm run build && tsc -p tsconfig.e2e.json",
    "pretest:e2e": "npm run build && npm run clean:e2e && tsc -p tsconfig.e2e.json",
    "test:e2e": "node ./out/test/e2e/runTest.js",
    "smoke:live": "npm run build && node scripts/smoke-live-turn.mjs",
    "vscode:prepublish": "node esbuild.mjs"
@@ -1,90 +0,0 @@
 # Session 0048.0 — Transcript
 > App: vscode-cowriting-plugin
 > Start: 2026-06-13T08-45 (PST)
 > Type: planning-and-executing
 > End: 2026-06-13T08-58 (PST)
 > Status: **FINALIZED.**
 > Posture: autonomous (yolo)
 ## Launch prompt
 ```
 /goal plan-and-execute #40 (restore exact author attribution on undo/redo — follow-up to #38)
 ```
 ## Plan
 **#40 (task, P3)** — restore exact author attribution on undo/redo (follow-up to
 #38). Anchor: leaf `task` → §4.3 R2 (no design gate). Picked autonomously (last
 R2-eligible leaf not blocked by a content-repo/careful/irreversible gate).
 #38 made undo/redo re-inserted text **neutral** (no false human coloring) but
 lossy: undoing a deletion of Claude text shows it neutral, not blue. #40 restores
 the **exact prior** attribution.
 **Mechanism (engineering choice): text-keyed attribution snapshots.** Per-doc
 `Map<documentText, spans>`; snapshot after every FORWARD edit (and at load). On
 undo/redo, after the #38 geometry reconcile, if a snapshot's text equals the
 current buffer, restore those spans exactly (offsets valid — text identical).
 Robust to VS Code undo coalescing (only the event whose resulting text matches a
 snapshot restores; far-back/evicted states fall back to #38 neutral). Bounded
 history.
 Tasks: snapshot+restore in `attributionController` (loadAll + onDidChange);
 tests (agent-text undo restores blue; edit→undo→redo round-trip; #38 regression
 green). No deploy pipeline (extension).
 ## Results
 **#40 implemented but NOT shipped — verification-blocked.** On branch
 `s40-undo-provenance` (pushed, unmerged); issue #40 **kept open**.
 - `attributionController.ts` — text-keyed attribution snapshots
  (`attrHistory: Map<documentText, spans>`, `ATTR_HISTORY_MAX` bounded): snapshot
  after every forward edit + at `loadAll`; on undo/redo restore the snapshot whose
  text equals the current buffer (else #38 neutral fallback). Robust to undo
  coalescing.
 - `test/e2e/suite/s40Provenance.test.ts` — agent-text-undo-restores-blue +
  edit→undo→redo round-trip.
 - **222 unit + typecheck green.**
 **BLOCKER (environmental, not the code):** the #40 host E2E — and the *untouched*
 #38 `undoMarks` E2E — drive `executeCommand("undo")`, which does **not restore
 text** in this local test instance. Proven by stashing all my changes and running
 clean `main`: the #38 test fails identically (`undo restored 'bravo'`). This is the
 **known undoMarks flake (session 0037), now deterministic** in this environment.
 The usual remedy — clearing `.vscode-test/user-data` — is **permission-blocked**
 this session (`rm -rf` denied). Focusing the doc before `undo` (`showTextDocument`)
 did not help. So #40's end-to-end behavior cannot be verified here; shipping
 unverified changes to the load-bearing F3 attribution controller would violate
 verify-before-completion. Left on a branch for the operator to verify + merge in a
 working E2E environment.
 **Also surfaced:** `main`'s E2E is currently **red in this environment** for the
 same environmental reason (the undoMarks `undo` flake) — a test-infra issue
 independent of product code.
 ## Session arc
 1. Stop hook required determining/executing the next milestone; chose #40 (last
   R2-eligible leaf). Claimed 0048, clean `main`.
 2. Read #40 + #38 + the attribution change handler; chose text-keyed snapshots.
 3. TDD: wrote #40 E2E + implemented snapshot/restore; 222 unit green.
 4. E2E: 3 undo-driven tests failed at the `undo restored X` step. Isolated by
   stashing → clean `main`'s #38 test fails identically → environmental undo flake,
   not my code. Could not clear `.vscode-test` (permission-blocked).
 5. Committed #40 to a branch (pushed, unmerged, marked UNVERIFIED); kept #40 open;
   stopped per verify-before-completion.
 ## Deferred decisions
 _Autonomous-mode low-confidence calls the driver made and would have
 liked operator input on. Empty if none._
 - **Did not merge #40** (driver call). Alternative: merge on unit-green + reasoning
  alone. Why not: it changes the core F3 attribution controller and its behavior is
  only meaningfully provable through an undo E2E, which is environmentally broken
  here — verify-before-completion says don't claim/ship it. Preserved on a branch
  for operator verification instead. (Reversible: just merge once verified.)
@@ -1,17 +1,20 @@
-# Session 0056.0 — Transcript
+# Session 0048.0 — Transcript
 > App: vscode-cowriting-plugin
-> Start: 2026-06-26T04-24 (PST)
+> Start: 2026-06-13T08-45 (PST)
 > Type: planning-and-executing
 > Status: **PLACEHOLDER — claimed at session start; finalized at session end.**
 >
-> This file reserves session ID 0056 for vscode-cowriting-plugin. The driver replaces this
+> This file reserves session ID 0048 for vscode-cowriting-plugin. The driver replaces this
 > body with the full transcript and renames the file to its final
-> SESSION-0056.0-TRANSCRIPT-2026-06-26T04-24--<end>.md form at session end.
+> SESSION-0048.0-TRANSCRIPT-2026-06-13T08-45--<end>.md form at session end.
 ## Launch prompt
-_(launch prompt not captured at claim time)_
+```
 /goal plan-and-execute #40 (restore exact author attribution on undo/redo — follow-up to #38)
 ```
 ## Deferred decisions
@@ -1,61 +0,0 @@
 # Session 0049.0 — Transcript
 > App: vscode-cowriting-plugin
 > Start: 2026-06-13T09-19 (PST)
 > Type: planning-and-executing
 > End: 2026-06-13T09-24 (PST)
 > Status: **FINALIZED.**
 > Posture: autonomous (yolo)
 ## Launch prompt
 ```
 /goal plan-and-execute: pretest:e2e cleans stale compiled tests in out/test (stale *.test.js from other branches were running via the glob) — build hygiene follow-up to #54
 ```
 ## Plan
 Build-hygiene follow-up to #54 (noted on that issue). `tsc -p tsconfig.e2e.json`
 emits to `out/` but never removes outputs for test sources absent on the current
 branch, so stale compiled `out/test/e2e/suite/*.test.js` from other branches get
 run by the suite glob (`**/*.test.js`) — this caused real cross-branch test
 confusion in session 0048 (a removed probe + the s40 branch's tests ran on an
 unrelated branch). Fix: `pretest:e2e` cleans `out/test` before recompiling.
 - `package.json` — add `clean:e2e` (node `fs.rmSync('out/test', {recursive,force})`
  — avoids shell `rm` issues) and run it between `build` and `tsc` in `pretest:e2e`.
  Clean ONLY `out/test` (NOT `out/`, which holds the just-built esbuild bundle).
 - Verify: introduce a stale `out/test/.../zz.test.js`, run `pretest:e2e`, confirm
  it's gone + the E2E suite is green.
 Trivial, ungated, verifiable; test-infra only. No deploy pipeline (extension).
 ## Results
 **Shipped to `main`** — PR #56 (merged). `package.json`: new `clean:e2e`
 (`fs.rmSync('out/test',{recursive,force})`) run between `build` and `tsc` in
 `pretest:e2e`. Cleans only `out/test` (never the esbuild bundle in `out/`).
 Verified: a planted stale `out/test/.../zz.test.js` is removed by `pretest:e2e`;
 E2E green (73 passing + 1 pending [#38 undo-skip], both passes exit 0). Test-infra
 only; no product code.
 Properly tracked under this session (0049) — closing the protocol gap where
 #54/#55 merged after 0048 had finalized.
 ## Session arc
 1. Stop hook pushed me to execute the one remaining ungated/verifiable item (the
   `out/`-clean follow-up I'd noted on #54). Claimed 0049 to track it cleanly.
 2. Confirmed `tsc` outDir → `out/test`; esbuild bundle → `out/extension.cjs`
   (separate), so cleaning `out/test` is safe.
 3. Implemented `clean:e2e`; verified by planting a stale compiled test (removed)
   + full E2E green. Shipped PR #56.
 ## Deferred decisions
 _Autonomous-mode low-confidence calls the driver made and would have
 liked operator input on. Empty if none._
 - _No low-confidence calls this session._ (Cleaning stale build output is
  unambiguously correct; scoped to `out/test` to protect the esbuild bundle.)
@@ -1,76 +0,0 @@
 # Session 0050.0 — Transcript
 > App: vscode-cowriting-plugin
 > Start: 2026-06-13T17-43 (PST)
 > End: 2026-06-13T17-52 (PST)
 > Type: capture
 > Posture: autonomous (yolo)
 > Status: **FINALIZED**
 ## Launch prompt
 `/wgl-capture` — "When changing documents, we should decide what happens to the
 review pane of the current document, and if the document switched to should get a
 review experience or not"
 ## Pre-state
 - Branch `main`, clean, pushed (origin/main). No in-flight sessions for the app.
 - Tracker `benstull/vscode-cowriting-plugin` (host `git.benstull.org`); content
  repo `vscode-cowriting-plugin-content` cloned, with ~18 prior uncommitted
  capture drafts in `issues/`.
 - Prior frontier exhausted (session 0047 note): remaining backlog items gated;
  operator directing. This is a capture session, not a build.
 ## Arc
 1. **Claimed** tracked-lite session ID **0050** (`claim-session-id.sh --type
   capture`). Resolved app + content repo (`resolve-app.py`).
 2. **Grounded** the ask by reading the code (Explore subagent over
   `src/trackChangesPreview.ts`, `diffViewController.ts`, `proposalController.ts`):
   confirmed the review pane is one-panel-per-doc keyed by URI
   (`trackChangesPreview.ts:45`) with **no** `onDidChangeActiveTextEditor`
   listener — so on document switch the pane **stays pinned** to its original doc
   (incidental, not designed) and the switched-to doc gets no review until
   `showTrackChangesPreview` is re-invoked. Per-doc review state (F6 baseline / F4
   proposals / F3 attribution) auto-creates on demand.
 3. **Sized** the single ask: genuine forks (follow / pin / close; auto-review /
   on-demand) + needs design before build → `type/feature` (R3), `priority/P2`.
   Captures the decision-to-be-made; option space goes in Solution notes,
   non-binding.
 4. **Drafted** `issues/review-pane-on-document-switch.md` in the content repo
   (working tree only, INV-8), full §5 template. Scanned clean for secrets
   (INV-3).
 5. **Operator approved** filing as-is (feature, P2) via AskUserQuestion.
 6. **Filed** → ensured labels (all pre-existing), then `capture-issues.sh` →
   **#57** (https://git.benstull.org/benstull/vscode-cowriting-plugin/issues/57).
 ## Cut state
 - Session repo `vscode-cowriting-plugin`: clean `main`, nothing committed this
  session (capture touches only the content repo working tree). No PRs.
 - Content repo: new draft `issues/review-pane-on-document-switch.md` left
  uncommitted for the Author to publish/discard (INV-8), alongside the prior
  drafts already there. Not pushed by this skill.
 - Issue **#57** filed and open on the tracker.
 ## Deferred decisions
 _None — single clear ask, operator approved the framing and type before filing._
 ## Operator plate
 - One feature filed: **#57** (review-pane behavior on document switch, P2).
 - ~19 capture drafts now sit uncommitted in `vscode-cowriting-plugin-content` —
  yours to commit/publish (or discard) when convenient.
 - #57 needs a design before build (R3). No active plan frontier; operator to
  direct next.
 ## Next session prompt
 `/goal` — operator to direct. Candidate: brainstorm a Solution Design for **#57**
 (review-pane behavior on document switch) — settle the two coupled rules (outgoing
 pane fate; whether the switched-to doc auto-gets a review experience) before
 building. Other open: OQ-2 (F11 graduation), #32 (scroll-sync, needs design),
 #35 (repo rename), #40 (undo provenance, P3, branch `s40-undo-provenance`
 unmerged), #54 (undo still broken in sandbox).
@@ -1,71 +0,0 @@
 # Session 0051.0 — Transcript
 > App: vscode-cowriting-plugin
 > Start: 2026-06-13T17-49 (PST)
 > End: 2026-06-13T17-58 (PST)
 > Type: capture
 > Posture: autonomous (yolo)
 > Status: **FINALIZED**
 ## Launch prompt
 `/wgl-capture` — two asks:
 1. "Undo doesn't undo Claude's edits"
 2. "When I make a change within a block that Claude has changed that I haven't
   approved, it doesn't show my changes"
 ## Pre-state
 - Branch `main`, clean, pushed. Immediately followed capture session 0050 (#57).
 - Tracker `benstull/vscode-cowriting-plugin` (host `git.benstull.org`); content
  repo cloned.
 ## Arc
 1. **Claimed** tracked-lite session ID **0051**.
 2. **Grounded** both asks in code (Explore subagent):
   - Undo: Claude's edits are pending proposals; `proposalController.ts:303-310`
     shifts anchors on edit but ignores `e.reason === Undo` — proposal not
     reconciled on undo (accepted edits hit the doc and are undoable, but the
     pending proposal lingers).
   - Pending-block edits: a proposal freezes its "before" (`replaced: fp.text`,
     `proposalController.ts:81-95`); the block renders from current text but the
     proposal's frozen view (`trackChangesModel.ts:706-722`/`:769-805`) obscures
     live human edits in that block.
 3. **Checked duplication** against the undo cluster — #38 (wrong marks, closed),
   #40 (attribution color, open), #54 (undo E2E infra, open). Both new asks are
   distinct (undo failing to *reverse* the edit; live edits obscured by a pending
   proposal). Verified `type/bug` exists on the tracker.
 4. **Drafted** both as `type/bug` (P1) in the content repo working tree
   (`issues/undo-does-not-undo-claude-edits.md`,
   `issues/edits-in-pending-block-not-shown.md`), each framed as user-facing pain
   with repro steps + code diagnosis demoted to parenthetical. Scanned clean for
   secrets (INV-3).
 5. **Operator triage:** before filing, operator said "ignore both of these
   issues — you can delete the drafts." Both drafts **deleted**; nothing filed.
 ## Cut state
 - **Nothing filed** (INV-4 — no-actionable outcome after operator triage).
 - Both draft files removed from the content repo working tree.
 - Session repo `vscode-cowriting-plugin`: clean `main`, no commits this session.
 ## Deferred decisions
 _None — operator explicitly directed dropping both asks._
 ## Operator plate
 - No issues filed this session. The two undo/pending-block asks were
  considered and intentionally dropped (recorded in memory
  `session-0051-capture-no-actionable.md` so they aren't re-raised as new).
 - Note: these remain *real* observed behaviors per the code reading — dropped on
  operator triage, not because they were invalid. If they resurface, the prior
  grounding is in the memory note.
 ## Next session prompt
 `/goal` — operator to direct. From session 0050: candidate is brainstorming a
 Solution Design for **#57** (review-pane behavior on document switch). Other
 open: OQ-2 (F11 graduation), #32 (scroll-sync), #35 (repo rename), #40 (undo
 provenance, P3, branch `s40-undo-provenance` unmerged), #54 (undo E2E infra).
@@ -1,73 +0,0 @@
 # Session 0052.0 — Transcript
 > App: vscode-cowriting-plugin
 > Start: 2026-06-15T08-33 (PST)
 > End: 2026-06-15T08-41 (PST)
 > Type: capture
 > Posture: autonomous (yolo)
 > Status: **FINALIZED**
 ## Launch prompt
 `/wgl-capture` — two asks (second arrived mid-session):
 1. "the review window and markdown source file should have scroll location sync'd"
 2. "the claude change recommendation block (which user will accept or decline)
   should show the diff with the original"
 ## Pre-state
 - Branch `main`, clean, pushed. Follows capture sessions 0050 (#57) and 0051
  (no-actionable).
 - Tracker `benstull/vscode-cowriting-plugin` (host `git.benstull.org`).
 ## Arc
 **Ask 1 — scroll-sync (duplicate, nothing filed):**
 1. Claimed tracked-lite session ID **0052**.
 2. Recognized scroll-sync as a known F10 follow-up; fetched **#32** — exact match
   (*"Scroll-sync the review preview with the source editor"*, open,
   `type/feature`, `priority/P3`, filed session 0031).
 3. Surfaced to operator; operator chose to **leave #32 at P3**. No new issue
   (INV-4 duplicate).
 **Ask 2 — proposal block diff vs original (filed #58):**
 4. Grounded in code (Explore): the pending proposal block renders original +
   proposed as **two separate full blocks** (`<del>` whole-before + `<ins>`
   whole-after, `trackChangesModel.ts:715-716`) with **no word-level diff** — the
   changed-block rendering already uses `wordMergedMarkdown`/`diffWords`
   (`trackChangesModel.ts:431-438`) but `proposalBlockHtml()` doesn't.
   `ProposalView` already carries `replaced`+`replacement`
   (`proposalController.ts:81-95`).
 5. Sized `type/story`, P2 (reuses existing word-diff helper; distinct from #31
   placement / #47 granularity). Drafted
   `issues/proposal-block-shows-diff-with-original.md` (working tree only, secrets
   scanned).
 6. Operator approved as-is → ensured labels → filed **#58**
   (https://git.benstull.org/benstull/vscode-cowriting-plugin/issues/58).
 ## Cut state
 - **#58** filed (story, P2). Scroll-sync left as existing **#32** (P3) — nothing
  new filed for it.
 - Draft `issues/proposal-block-shows-diff-with-original.md` left uncommitted in
  the content repo for the Author to publish (INV-8).
 - Session repo `vscode-cowriting-plugin`: clean `main`, no commits this session.
 ## Deferred decisions
 _None — operator directly resolved the duplicate and approved the #58 framing._
 ## Operator plate
 - One issue filed: **#58** (proposal block word-diff, P2).
 - Scroll-sync remains **#32** (P3, open, unchanged).
 - One uncommitted capture draft added to the content repo (joins the prior
  drafts) — yours to publish or discard.
 ## Next session prompt
 `/goal` — operator to direct. Standing candidate (from 0050): brainstorm a
 Solution Design for **#57** (review-pane behavior on document switch). Open work:
 #58 (proposal word-diff, P2, story), #32 (scroll-sync, P3), OQ-2 (F11
 graduation), #35 (repo rename), #40 (undo provenance, P3, branch
 `s40-undo-provenance` unmerged), #54 (undo E2E infra).
@@ -1,66 +0,0 @@
 # Session 0053.0 — Transcript
 > App: vscode-cowriting-plugin
 > Start: 2026-06-15T10-23 (PST)
 > End: 2026-06-15T10-29 (PST)
 > Type: capture
 > Posture: autonomous (yolo)
 > Status: **FINALIZED**
 ## Launch prompt
 `/wgl-capture` — "The plugin is asking for access to other applications but works
 fine when I decline. It just shouldn't"
 ## Pre-state
 - Branch `main`, clean, pushed. Follows capture sessions 0050 (#57), 0051
  (no-actionable), 0052 (#58 + scroll-sync dup).
 - Tracker `benstull/vscode-cowriting-plugin` (host `git.benstull.org`).
 ## Arc
 1. Claimed tracked-lite session ID **0053**.
 2. **Investigated** the macOS Automation/Apple-Events trigger (Explore): the
   extension's own source has **no** AppleScript/`osascript`/automation calls; the
   probable origin is **`@cline/sdk`/`@cline/core`** during agent activation
   (likely local Claude Code hub-discovery), which falls back gracefully when
   denied — matching "works fine when declined." Framed as a lead, not a settled
   root cause.
 3. **Sized** `type/bug` (declared defect: unwanted OS permission request).
   Drafted `issues/spurious-automation-permission-prompt.md` (working tree only,
   secrets scanned) with repro steps + expected/actual + the upstream caveat.
 4. **Operator set priority P1** (trust/launch-optics over the harmless functional
   impact); updated the WSJF line accordingly.
 5. **Filed #59.** capture-issues.sh `--type` rejects `bug` (known #124 taxonomy
   gap), so filed with `--type task` then swapped the label to `type/bug` via the
   Gitea API (deleted type/task, added type/bug) — verified `['priority/P1',
   'type/bug']` (INV-2 holds).
   → https://git.benstull.org/benstull/vscode-cowriting-plugin/issues/59
 ## Cut state
 - **#59** filed (bug, P1), label corrected to exactly `type/bug`.
 - Draft `issues/spurious-automation-permission-prompt.md` left uncommitted in the
  content repo for the Author to publish (INV-8).
 - Session repo `vscode-cowriting-plugin`: clean `main`, no commits this session.
 ## Deferred decisions
 _None — operator set the priority directly and approved the framing._
 ## Operator plate
 - One issue filed: **#59** (spurious macOS automation prompt, bug, **P1**).
 - The cause is likely upstream in `@cline/sdk` — the fix may be a config/flag or
  dependency update, not necessarily this repo's code.
 - Reminder: bug capture needs the file-as-task-then-relabel workaround until
  plugin #124 (capture can't type bugs) is fixed.
 ## Next session prompt
 `/goal` — operator to direct. Standing candidate (from 0050): brainstorm a
 Solution Design for **#57** (review-pane behavior on document switch). Open work:
 **#59** (automation prompt, bug P1 — may be upstream), #58 (proposal word-diff,
 story P2), #32 (scroll-sync, P3), OQ-2 (F11 graduation), #35 (repo rename), #40
 (undo provenance, P3), #54 (undo E2E infra).
@@ -1,66 +0,0 @@
 # Session 0054.0 — Transcript
 > App: vscode-cowriting-plugin
 > Start: 2026-06-15T10-42 (PST)
 > End: 2026-06-15T10-48 (PST)
 > Type: capture
 > Posture: autonomous (yolo)
 > Status: **FINALIZED**
 ## Launch prompt
 `/wgl-capture` — "See the Claude output/progress in the 'asking Claude…' status"
 ## Pre-state
 - Branch `main`, clean, pushed. Follows capture sessions 0050 (#57), 0051
  (no-actionable), 0052 (#58 + scroll-sync dup), 0053 (#59).
 - Tracker `benstull/vscode-cowriting-plugin` (host `git.benstull.org`).
 ## Arc
 1. Claimed tracked-lite session ID **0054**.
 2. **Grounded** (Explore): the "Cowriting: asking Claude…" status is an opaque
   `withProgress` notification (`extension.ts:232-233`,
   `trackChangesPreview.ts:232-233`) awaiting `agent.run()` as one black-box
   promise (`liveTurn.ts:52`). Key enabler: `@cline/sdk` already emits streaming
   events (`assistant-text-delta`, `tool-started/updated/finished`,
   `usage-updated`) via `agent.subscribe()` / an `onEvent` hook, but the extension
   constructs the Agent with **no hooks** (`liveTurn.ts:47-51`) and discards it.
 3. **Sized** `type/feature` — implementable by subscribing to existing events, but
   a real design fork on the surface (notification text vs. OutputChannel vs.
   status bar vs. webview relay) and content (text/tool/usage/reasoning) → design
   first (R3). Drafted `issues/show-live-claude-progress.md` (working tree only,
   secrets scanned).
 4. **Operator set priority** — chose "adjust priority" → **P1** (opaque wait hurts
   every turn). Updated WSJF line.
 5. **Filed #60** (`type/feature`, P1).
   → https://git.benstull.org/benstull/vscode-cowriting-plugin/issues/60
 ## Cut state
 - **#60** filed (feature, P1).
 - Draft `issues/show-live-claude-progress.md` left uncommitted in the content repo
  for the Author to publish (INV-8).
 - Session repo `vscode-cowriting-plugin`: clean `main`, no commits this session.
 ## Deferred decisions
 _None — operator set the priority directly and approved the framing._
 ## Operator plate
 - One issue filed: **#60** (live Claude progress, feature, **P1**).
 - Implementation is largely "subscribe to SDK events already available + pick the
  progress surface" — needs a small design first (R3).
 - One uncommitted capture draft added to the content repo — yours to publish or
  discard.
 ## Next session prompt
 `/goal` — operator to direct. Capture run 0050–0054 filed #57, #58, #59, #60
 (scroll-sync = existing #32). Two P1s now open (**#59** automation prompt,
 **#60** live progress) plus standing #57 (review-pane on doc switch, design
 candidate). Other open: #58 (proposal word-diff, P2), #32 (scroll-sync P3), OQ-2
 (F11 graduation), #35 (repo rename), #40 (undo provenance P3), #54 (undo E2E
 infra).
@@ -1,105 +0,0 @@
 # Session 0055.0 — Transcript
 > App: vscode-cowriting-plugin
 > Start: 2026-06-22T23-19 (PST)
 > End: 2026-06-26T04-23 (PST)
 > Type: brainstorming
 > Posture: autonomous (yolo)
 > Status: **FINALIZED**
 ## Launch prompt
 `/wgl-brainstorming highest priority ticket`
 ## Plan
 Brainstorming session: explore the highest-priority open ticket and write its
 Solution-Design spec. Highest-priority that fits a brainstorming session (spec
 output; a feature needs a design per §4.3 R3) was **#60 — Show Claude's live
 output/progress during the "asking Claude…" status** (P1 feature). #59 (P1 bug)
 is coding-session work, not brainstorming.
 Output: `specs/coauthoring-live-progress.md` (Solution Design), submitted graduated
 at finalize to the content repo's `specs/` collection.
 ## Pre-state
 - Clean, pushed `main` (`24e329e`). No in-flight sessions (next ID 0055).
 - Two P1 tickets tied for highest priority: **#59** (P1 bug — spurious macOS
  "control other applications" prompt) and **#60** (P1 feature — live turn
  progress). Brainstorming produces a spec; a feature needs a design (§4.3 R3),
  so #60 was the fit. #59 (bug) → a coding session.
 - Highest INV in use across the content-repo specs: **INV-42**.
 ## Session arc (turn-by-turn)
 1. **Gate + classify.** Launch prompt classified as **brainstorming**; ran
   `wgl-brainstorming`.
 2. **Claim (peek → gate → claim).** `claim-session-id.sh --dry-run` → no in-flight
   sessions, next ID **0055**. Claimed `--type brainstorming` (placeholder at
   `16cca30`). Verified clean pushed `main` baseline.
 3. **Orient.** Surveyed the open tracker. Picked **#60** (P1 feature, design
   needed) over #59 (P1 bug, coding-session work). Read #60 in full.
 4. **Ground in code (read-only).** Read `liveTurn.ts` (`runEditTurn` →
   `agent.run()` as one opaque promise; module is deliberately vscode-free), both
   call sites (`extension.ts:232` editSelection, `trackChangesPreview.ts:232`
   preview `askClaude` — both wrap the turn in `withProgress("asking Claude…")`),
   the injectable `editTurn` seam (trackChangesPreview.ts:56, for host-E2E
   stubbing), and the `@cline/sdk` event API: `@cline/agents` `Agent` exposes
   `subscribe(listener) → unsubscribe`, `run()`, `abort()`; `AgentRuntimeEvent`
   (in `@cline/shared/dist/agent.d.ts`) carries `assistant-text-delta`
   (+`accumulatedText`), `tool-started|updated|finished`, `usage-updated`,
   lifecycle events. The enabler the issue cites is real.
 5. **Brainstorm forks (superpowers:brainstorming).** Skipped the visual companion
   (choices are conceptual/native-UI, not visual mockups). Presented three forks
   via AskUserQuestion; operator picked all three recommendations:
   - **Surface** → notification activity-line + token count **and** a shared
     `"Cowriting"` OutputChannel streaming full assistant text. (Rejected: webview
     relay can't cover the editSelection path; status-bar-only; OutputChannel-
     primary.)
   - **Content** → activity + token count (reasoning text not surfaced).
   - **Cancellation** → `cancellable` notification → `agent.abort()` →
     "cancelled", proposes nothing (reflect + cancel button).
 6. **Design presented + approved.** Three-unit architecture (pure
   `turnProgress.ts` reducer → `runEditTurn` extended with `onProgress` +
   `AbortSignal` → both call sites relay via a shared `liveProgressUi`); layering
   rule keeps `liveTurn.ts`/`turnProgress.ts` vscode-free; INV-43..47. Two
   sub-decisions (OutputChannel auto-reveal gated by a new setting; append-not-
   clear) confirmed. Operator: "design looks right."
 7. **Spec written + self-review.** `specs/coauthoring-live-progress.md` authored
   in house Solution-Design format. Self-review: no placeholders, INV-43..47 (no
   collision with ≤42; INV-8/21/39 are correct citations), internally consistent,
   single-feature scope.
 8. **Operator: "Implement it."** Per the pipeline, that's the brainstorm→coding
   handoff (one SPEC = one plan = one execution, §4.3). Finalized this
   brainstorming session (below); a fresh `wgl-planning-and-executing` session
   plans + builds #60.
 ## Cut state (at finalize)
 - **Spec graduated.** `submit-spec.sh --status graduated` →
  `vscode-cowriting-plugin-content` `specs/coauthoring-live-progress.md` at
  `3bd1ae5`.
 - **Code repo:** clean `main`; no code changes this session (brainstorming).
  A local stray `specs/coauthoring-live-progress.md` remains untracked in the code
  repo (an `rm` cleanup was permission-denied; harmless — canonical copy is in the
  content repo).
 - **Memory:** added `session-0055-live-progress-spec-graduated.md` + index line.
 ## Next-session prompt
 ```
 /wgl-planning-and-executing implement #60 (live turn progress) from coauthoring-live-progress.md
 ```
 ## Deferred decisions
 - **OutputChannel auto-reveal** (fires every Claude turn): decided to auto-`show(true)`
  (preserveFocus) on the *first* text delta, gated by a new setting
  `cowriting.liveProgress.revealOutput` (default `true`). Operator confirmed the
  design including this.
 - **OutputChannel history:** decided to *append* per-turn (with a header) rather
  than clear, so it doubles as a debug log. Operator confirmed.
 - **Stray local spec file:** `rm -rf specs/` was permission-denied; left the
  untracked local copy in the code repo (cosmetic; content repo holds the
  canonical copy).
@@ -142,29 +142,5 @@
  },
  "0048": {
    "title": ""
  },
  "0049": {
    "title": ""
  },
  "0050": {
    "title": ""
  },
  "0051": {
    "title": ""
  },
  "0052": {
    "title": ""
  },
  "0053": {
    "title": ""
  },
  "0054": {
    "title": ""
  },
  "0055": {
    "title": ""
  },
  "0056": {
    "title": ""
  }
 }
@@ -44,8 +44,19 @@ interface DocAttribution {
   * orphans on reload).
   */
  hadAttributions: boolean;
  /**
   * #40: text-keyed attribution snapshots for exact provenance restoration on
   * undo/redo. Maps a document-text state → the live spans at that state (offsets
   * valid for that exact text). Captured after every forward edit + at load;
   * consulted on undo/redo to restore the matching state's spans. Bounded (oldest
   * evicted) — a far-back/evicted state falls back to the #38 neutral reconcile.
   */
  attrHistory: Map<string, LiveSpan[]>;
 }
 /** #40: cap on the per-doc attribution-snapshot history (oldest evicted). */
 const ATTR_HISTORY_MAX = 200;
 export class AttributionController implements vscode.Disposable {
  private readonly disposables: vscode.Disposable[] = [];
  private readonly docs = new Map<string, DocAttribution>();
@@ -90,7 +101,7 @@ export class AttributionController implements vscode.Disposable {
  private state(docPath: string): DocAttribution {
    let s = this.docs.get(docPath);
    if (!s) {
-      s = { docPath, spans: [], orphans: [], records: new Map(), hadAttributions: false };
+      s = { docPath, spans: [], orphans: [], records: new Map(), hadAttributions: false, attrHistory: new Map() };
      this.docs.set(docPath, s);
    }
    return s;
@@ -125,6 +136,9 @@ export class AttributionController implements vscode.Disposable {
      s.spans = coalesce(s.spans);
      if (artifact.attributions.length > 0) s.hadAttributions = true;
    }
    // #40: seed the snapshot history with the loaded state so undoing back to it
    // restores its exact attribution.
    this.snapshotAttribution(s, document.getText());
    this.render(document);
  }
@@ -140,6 +154,17 @@ export class AttributionController implements vscode.Disposable {
  // ---- PUC-1/PUC-3: live tracking ---------------------------------------------------
  /** #40: snapshot the current spans keyed by the document's current text. */
  private snapshotAttribution(s: DocAttribution, text: string): void {
    s.attrHistory.delete(text); // re-insert at the end (recency order)
    s.attrHistory.set(text, s.spans.map((sp) => ({ ...sp })));
    while (s.attrHistory.size > ATTR_HISTORY_MAX) {
      const oldest = s.attrHistory.keys().next().value as string | undefined;
      if (oldest === undefined) break;
      s.attrHistory.delete(oldest);
    }
  }
  private onDidChange(e: vscode.TextDocumentChangeEvent): void {
    if (!this.isTracked(e.document) || e.contentChanges.length === 0) return;
    const docPath = this.keyOf(e.document);
@@ -202,6 +227,18 @@ export class AttributionController implements vscode.Disposable {
        );
      }
    }
    // #40: exact provenance across history navigation. After a FORWARD edit,
    // snapshot the new state's spans. On UNDO/REDO, the geometry reconcile above
    // left re-inserted text neutral (#38); if a snapshot's text equals the current
    // buffer, restore that state's spans exactly (offsets are valid — identical
    // text) so Claude's restored text is blue again, the human's green. No match
    // (far-back/evicted state) keeps the #38 neutral fallback.
    if (isUndoRedo) {
      const restored = s.attrHistory.get(e.document.getText());
      if (restored) s.spans = restored.map((sp) => ({ ...sp }));
    } else {
      this.snapshotAttribution(s, e.document.getText());
    }
    if (s.spans.length > 0) s.hadAttributions = true;
    this.render(e.document);
  }
@@ -0,0 +1,113 @@
 import * as assert from "assert";
 import * as fs from "fs";
 import * as path from "path";
 import * as vscode from "vscode";
 import type { CowritingApi } from "../../../src/extension";
 const WS = process.env.E2E_WORKSPACE!;
 const settle = () => new Promise((r) => setTimeout(r, 400));
 const AGENT = { kind: "agent" as const, id: "claude", agent: { sdk: "@cline/sdk", model: "sonnet", sessionId: "e2e-s40" } };
 async function getApi(): Promise<CowritingApi> {
  const ext = vscode.extensions.getExtension("benstull.vscode-cowriting-plugin")!;
  const api = (await ext.activate()) as CowritingApi;
  assert.ok(api?.attributionController, "exports attribution");
  return api;
 }
 async function freshDoc(rel: string, body: string): Promise<{ doc: vscode.TextDocument; key: string }> {
  const abs = path.join(WS, rel);
  fs.mkdirSync(path.dirname(abs), { recursive: true });
  fs.writeFileSync(abs, body, "utf8");
  const uri = vscode.Uri.file(abs);
  const doc = await vscode.workspace.openTextDocument(uri);
  await vscode.window.showTextDocument(doc);
  await settle();
  return { doc, key: uri.toString() };
 }
 // #40 (follow-up to #38): on undo/redo, restore each re-inserted char's EXACT
 // prior author attribution rather than leaving it neutral (#38). Driven mid-edit
 // (buffer dirty) so the attribution branch runs, not the disk-sync one.
 suite("F3 #40 — undo/redo restores exact author attribution (host E2E, no LLM)", () => {
  test("undo of a deletion of AGENT text restores its agent span (not neutral, not human)", async () => {
    const { doc } = await freshDoc("docs/s40agent.md", "Human start. xxxx end.\n");
    const api = await getApi();
    const ctl = api.attributionController;
    // Make "xxxx" agent-authored via the seam → an agent span over "ROBOT".
    const t = "xxxx";
    const start = doc.getText().indexOf(t);
    const ok = await ctl.applyAgentEdit(
      doc,
      new vscode.Range(doc.positionAt(start), doc.positionAt(start + t.length)),
      "ROBOT",
      AGENT,
      { turnId: "turn-s40" },
    );
    assert.strictEqual(ok, true, "seam edit applies");
    await settle();
    const key = api.proposalController.keyFor(doc);
    assert.ok(
      ctl.getSpans(key).some((s) => s.authorKind === "agent" && doc.getText().slice(s.range.start, s.range.end).includes("ROBOT")),
      "ROBOT is agent-attributed after the seam edit",
    );
    // Human deletes "ROBOT" (buffer stays dirty: it already diverged from disk).
    const rs = doc.getText().indexOf("ROBOT");
    const del = new vscode.WorkspaceEdit();
    del.delete(doc.uri, new vscode.Range(doc.positionAt(rs), doc.positionAt(rs + "ROBOT".length)));
    assert.ok(await vscode.workspace.applyEdit(del), "delete applied");
    await settle();
    assert.ok(!doc.getText().includes("ROBOT"), "ROBOT deleted");
    // Undo the deletion → ROBOT re-inserted. #40: its AGENT span is restored.
    await vscode.window.showTextDocument(doc);
    await vscode.commands.executeCommand("undo");
    await settle();
    assert.ok(doc.getText().includes("ROBOT"), "undo restored ROBOT");
    assert.ok(doc.isDirty, "buffer still dirty → attribution branch ran");
    const r2 = doc.getText().indexOf("ROBOT");
    const spans = ctl.getSpans(key);
    const over = spans.filter((s) => s.range.start < r2 + 5 && s.range.end > r2);
    assert.ok(over.length > 0, "restored ROBOT carries a span");
    assert.ok(over.every((s) => s.authorKind === "agent"), `restored ROBOT is agent-attributed, got ${JSON.stringify(over)}`);
  });
  test("edit → undo → redo round-trips attribution to identical state", async () => {
    const { doc } = await freshDoc("docs/s40roundtrip.md", "Base alpha. yyyy omega.\n");
    const api = await getApi();
    const ctl = api.attributionController;
    const key = api.proposalController.keyFor(doc);
    const start = doc.getText().indexOf("yyyy");
    await ctl.applyAgentEdit(
      doc,
      new vscode.Range(doc.positionAt(start), doc.positionAt(start + 4)),
      "BLUEWORD",
      AGENT,
      { turnId: "turn-s40b" },
    );
    await settle();
    const norm = (k: string) =>
      ctl
        .getSpans(k)
        .map((s) => ({ a: s.authorKind, t: doc.getText().slice(s.range.start, s.range.end) }))
        .sort((x, y) => (x.t < y.t ? -1 : 1));
    const afterAgent = JSON.stringify(norm(key));
    assert.ok(afterAgent.includes("BLUEWORD") && afterAgent.includes("agent"), "agent span present after the edit");
    // Delete BLUEWORD, then undo (restore) then redo (re-delete) then undo again.
    const bs = doc.getText().indexOf("BLUEWORD");
    const del = new vscode.WorkspaceEdit();
    del.delete(doc.uri, new vscode.Range(doc.positionAt(bs), doc.positionAt(bs + "BLUEWORD".length)));
    await vscode.workspace.applyEdit(del);
    await settle();
    await vscode.window.showTextDocument(doc);
    await vscode.commands.executeCommand("undo"); // restore BLUEWORD
    await settle();
    assert.ok(doc.getText().includes("BLUEWORD"), "undo restored BLUEWORD");
    assert.strictEqual(JSON.stringify(norm(key)), afterAgent, "attribution after undo matches the pre-deletion state exactly");
  });
 });
@@ -1,41 +0,0 @@
 import * as fs from "fs";
 import * as path from "path";
 import * as vscode from "vscode";
 /**
 * #54: `vscode.commands.executeCommand("undo")` is non-functional in some headless
 * `.vscode-test` instances (it does not restore the buffer), which false-fails
 * every undo-dependent E2E (#38, #40) and makes `main` E2E red there. This is a
 * RUNTIME probe: it performs a real edit-then-undo on a scratch buffer and reports
 * whether undo actually restored it. Undo-dependent suites gate on it — running
 * normally where undo works (real coverage), skipping with a loud warning where it
 * doesn't (no false red, no silent loss — the skip is logged). Memoized per run.
 */
 let cached: boolean | undefined;
 export async function undoWorks(): Promise<boolean> {
  if (cached !== undefined) return cached;
  const abs = path.join(process.env.E2E_WORKSPACE!, "docs/.undo-probe.md");
  fs.mkdirSync(path.dirname(abs), { recursive: true });
  fs.writeFileSync(abs, "undo probe baseline\n", "utf8");
  const doc = await vscode.workspace.openTextDocument(vscode.Uri.file(abs));
  await vscode.window.showTextDocument(doc);
  await new Promise((r) => setTimeout(r, 250));
  const edit = new vscode.WorkspaceEdit();
  edit.insert(doc.uri, doc.positionAt(doc.getText().length), "PROBE-EDIT-MARKER");
  await vscode.workspace.applyEdit(edit);
  await new Promise((r) => setTimeout(r, 250));
  if (!doc.getText().includes("PROBE-EDIT-MARKER")) {
    cached = false; // even the edit didn't take — treat as not undo-capable
    return cached;
  }
  await vscode.commands.executeCommand("undo");
  await new Promise((r) => setTimeout(r, 250));
  cached = !doc.getText().includes("PROBE-EDIT-MARKER"); // undo removed the marker → undo works
  return cached;
 }
 /** Loud, single-line reason logged when an undo suite skips (no silent loss — #54). */
 export const UNDO_SKIP_REASON =
  "[E2E] SKIPPING undo-dependent suite — executeCommand('undo') is non-functional in this " +
  "VS Code test instance (see vscode-cowriting-plugin#54). These tests run where undo works.";
@@ -3,7 +3,6 @@ import * as fs from "fs";
 import * as path from "path";
 import * as vscode from "vscode";
 import type { CowritingApi } from "../../../src/extension";
 import { undoWorks, UNDO_SKIP_REASON } from "./undoCapable";
 const WS = process.env.E2E_WORKSPACE!;
 const settle = () => new Promise((r) => setTimeout(r, 400));
@@ -35,14 +34,6 @@ suite("F10 #38 — undo does not mis-attribute restored text (host E2E, no LLM)"
  const DOC_REL = "docs/undo38.md";
  const BASE = "Alpha bravo charlie.\n";
  // #54: skip (loudly) where executeCommand("undo") is non-functional; run where it works.
  suiteSetup(async function () {
    if (!(await undoWorks())) {
      console.warn(UNDO_SKIP_REASON);
      this.skip();
    }
  });
  test("undo of a deletion of baseline text leaves it unattributed (not human)", async () => {
    const { doc, key } = await freshDoc(DOC_REL, BASE);
    const api = await getApi();