diff --git a/src/story-mode.ts b/src/story-mode.ts
index 97374319..bef315b2 100644
--- a/src/story-mode.ts
+++ b/src/story-mode.ts
@@ -951,6 +951,8 @@ function reduceInput(name: string, input: unknown, cwd?: string): ReducedInput {
         input.headline = clip(segment, 200);
       const writes = heredocWrites(full, cwd);
       if (writes.length) input.writes = writes;
+      // A script or command that writes project files is an edit, whatever it was run as.
+      if (writes.length && (intent === 'run' || intent === 'look')) input.intent = 'edit';
       // Files it prints, whatever else it does (`cat a.py && pytest`): the drawer offers them. A
       // relative name resolves against the line's cwd (printedFiles gives none after a `cd`).
       const reads = printedFiles(full).map((f) =>
@@ -1522,6 +1524,7 @@ function applyResult(ev: StoryEvent, r: Extract<StoryEntry, { k: 'result' }>): v
   if (r.background) {
     // Started, not done: its task notification says how it ended.
     ev.running = true;
+    ev.background = true;
     ev.ok = undefined;
   }
   // Reading a background job's output file that reports tests is a look at test results.
@@ -1533,7 +1536,9 @@ function applyResult(ev: StoryEvent, r: Extract<StoryEntry, { k: 'result' }>): v
   )
     ev.intent = 'test';
   if (r.modified?.length) {
-    // Changed, but no diff to show: the file is listed, its lines unknown.
+    // Changed, but no diff to show: the file is listed, its lines unknown. A plain command that did
+    // it (a script, a formatter) edited files.
+    if (ev.intent === 'run' || ev.intent === 'look') ev.intent = 'edit';
     const known = new Set((ev.edits ?? []).map((d) => d.file));
     const more = r.modified
       .filter((f) => !known.has(f))
@@ -2271,6 +2276,9 @@ function decorate(draft: DraftPanel, events: StoryEvent[], turn: StoryTurn, inde
       const failedFirst = checks.slice(0, -1).some((e) => passed(e) === false);
       if (lastCheck?.running)
         story = isTest ? 'Claude starts the tests in the background.' : 'Claude starts the checks in the background.';
+      // Finished later, in the background: not tests that ran during this turn.
+      else if (lastCheck?.background && ok !== undefined)
+        story = `The ${isTest ? 'tests' : 'checks'} run in the background and ${ok ? 'pass' : 'fail'}.`;
       else if (ok === undefined) story = isTest ? 'Claude runs the tests.' : 'Claude runs the checks.';
       else if (!ok && tests && !tests.passed && !tests.failed && tests.errors) story = "The tests don't even load.";
       else if (!ok && tests && tests.passed && !tests.failed && !tests.errors)
diff --git a/src/types/story.ts b/src/types/story.ts
index 8f51866c..de980a61 100644
--- a/src/types/story.ts
+++ b/src/types/story.ts
@@ -128,6 +128,8 @@ export interface StoryEvent {
   description?: string;
   /** A command sent to the background ("Command running in background") that has not reported back. */
   running?: boolean;
+  /** A command that ran in the background (its result came back later, as a report of its own). */
+  background?: boolean;
   /** A save that ships the work: `gh pr create` (`pr`) or `git push` (`push`). */
   ships?: 'pr' | 'push';
   /** How many commits a Bash call makes (`git commit` segments). */
diff --git a/src/web/CLAUDE.md b/src/web/CLAUDE.md
index 2313fbd3..6d5e00c1 100644
--- a/src/web/CLAUDE.md
+++ b/src/web/CLAUDE.md
@@ -54,7 +54,7 @@ Frontend JS modules have `@fileoverview` with `@dependency`/`@loadorder` tags. L
 
 **Settings surface** (`#appSettingsModal` + `#sessionOptionsModal` + `#createCaseModal`): one `set-*` language shared through a single `:is(...)` id scope in styles.css. App Settings' rail is a table of contents over ONE scrolling document (`switchSettingsTab` scrolls); Session Options and Add Case really switch (`switchOptionsTab` / `switchCaseModalTab`), and their larger per-modal size blocks are the design, not drift. ⚠️ **The load/save contract is `getElementById` by id**: renaming or dropping a control id silently stops it loading or saving. ⚠️ The Session Options "Session" entry still keys off `context` (label-only rename). ⚠️ Add Case keeps its legacy `.form-row` markup via an adapter; every `<details>` there needs `.set-adv-chev` plus both marker suppressions. ⚠️ Model cards and the effort segment are views over hidden `<select>`s, which stay the source of truth. ⚠️ `.modal-tabs*` classes are retired; `admin-ui.js` needs `.set-rail-items` + `.set-doc` to survive any restructure. Guard: `test/app-settings-structure.test.ts`. → [architecture-invariants#settings-surface-app-settings-session-options-add-case](../../docs/architecture-invariants.md#settings-surface-app-settings-session-options-add-case)
 
-**Story Mode** (`story-mode.js` + `story-mode.css`, `showStoryButton`, per-device, default OFF, header button hidden on phones by mobile.css): the active Claude session's turns as comic pages from `GET /api/sessions/:id/story` (server core `src/story-mode.ts`, pure; reader `src/story-reader.ts`). ⚠️ Live refresh is the transcript tool events plus the stop and prompt-submitted hooks (extra `addListener`s in `connectSSE`, so the handler map keeps one method per event) and a 4 s poll while the turn runs, one request in flight, debounced; never the watcher's `transcript:complete`, which interactive transcripts never raise. ⚠️ Every string on the page is the agent's: `textContent` only, containers carry `data-i18n-skip`; a file opens through `openFilePreview()`, never a new route. ⚠️ Canvas click regions become real buttons (`_storySyncHits`), so they are focusable and labelled; a panel keeps its clock across refreshes (only a NEW panel animates in). ⚠️ The overlay owns Escape with a WINDOW capture listener (it runs before app.js's document one): one layer per press: a file preview opened from a panel (it has no Escape of its own outside the folder grid), then the drawer, then the overlay; a folder grid on top and a preview in edit mode keep their own keys. ⚠️ Its comic palette is its own (`--story-*` tokens, `.story-paper` on a light skin), so a skin never repaints it. ⚠️ Wide panels draw their scene in a centered stage (`STORY_STAGE_MAX`); a scene with `fullWidth` (the final splash) uses the whole panel. ⚠️ **Save image** composites the page itself (each panel canvas, then every caption, balloon and chip redrawn from its computed style and box, `_storyPaintBox`); never rasterize the DOM through SVG (self-hosted fonts do not reach it). Session Options carries a Story button too (`#sessionOptionsStoryBtn`, same setting), the way in on phones. ⚠️ Claude's speech balloon is placed by `_storyPlaceBalloon()` in the band above the head `agent()` last drew (cyan body only), clamped (`--story-lines`) to stay inside the panel and off the head; never position it per kind in CSS (that is what covered the POW burst and the agent's head on narrow panels). Drawer prose (a prompt, a helper's answer) links rooted paths only. ⚠️ Every file a panel or drawer opens goes through `_storyOpenFile()`: keyboard focus moves to the preview's close button, Tab cycles inside the preview while it is open (`_storyTrapTab`), and Escape gives focus back to what opened it. ⚠️ Panels are kept by IDENTITY (kind + first event id, `rt.identity`), never by index: a fold into a montage near the start shifts every later index and must not rebuild (and re-animate) them. ⚠️ A balloon's text is `.story-balloon-text`, after the visually hidden speaker words (`.story-vh`, "Claude says: "): the clamp and Save image must find the text span by class, never `firstElementChild` (that is how long balloons once stopped clamping). ⚠️ The drawer keeps its nodes when a refresh changes nothing (`st.drawerSig`), and a real change rebuilds and gives focus back to the control that does the same thing; helper steps are filled AFTER that decision. It is bound to its turn (`st.drawer.pageId`): when the newest turn moves on, the page holds that turn (`st.drawerHolds`) until the drawer closes. It starts under the bar (`--story-bar-h`, measured by the ResizeObserver), and where it covers the whole page `.story-main` is `inert` (`_storyDrawerCover`). ⚠️ Text colours come from the `--story-*-text` tokens (4.5:1 in both skins); the accents themselves are for fills and borders. Tests: `test/story-mode.test.ts`, `test/routes/story-routes.test.ts`, `test/story-mode-ui.test.ts` (JSDOM, every scene drawn in every shape), `test/story-corpus.test.ts` (nine sanitized real sessions, every page pinned), `test/story-mode.browser.test.ts` (browser suite).
+**Story Mode** (`story-mode.js` + `story-mode.css`, `showStoryButton`, per-device, default OFF, header button hidden on phones by mobile.css): the active Claude session's turns as comic pages from `GET /api/sessions/:id/story` (server core `src/story-mode.ts`, pure; reader `src/story-reader.ts`). ⚠️ Live refresh is the transcript tool events plus the stop and prompt-submitted hooks (extra `addListener`s in `connectSSE`, so the handler map keeps one method per event) and a 4 s poll while the turn runs, one request in flight, debounced; never the watcher's `transcript:complete`, which interactive transcripts never raise. ⚠️ Every string on the page is the agent's: `textContent` only, containers carry `data-i18n-skip`; a file opens through `openFilePreview()`, never a new route. ⚠️ Canvas click regions become real buttons (`_storySyncHits`), so they are focusable and labelled; a panel keeps its clock across refreshes (only a NEW panel animates in). ⚠️ The overlay owns Escape with a WINDOW capture listener (it runs before app.js's document one): one layer per press: a file preview opened from a panel (it has no Escape of its own outside the folder grid), then the drawer, then the overlay; a folder grid on top and a preview in edit mode keep their own keys. ⚠️ Its comic palette is its own (`--story-*` tokens, `.story-paper` on a light skin), so a skin never repaints it. ⚠️ Wide panels draw their scene in a centered stage (`STORY_STAGE_MAX`); a scene with `fullWidth` (the final splash) uses the whole panel. ⚠️ **Save image** composites the page itself (each panel canvas, then every caption, balloon and chip redrawn from its computed style and box, `_storyPaintBox`); never rasterize the DOM through SVG (self-hosted fonts do not reach it). Session Options carries a Story button too (`#sessionOptionsStoryBtn`, same setting), the way in on phones. ⚠️ Claude's speech balloon is placed by `_storyPlaceBalloon()` in the band above the head `agent()` last drew (cyan body only), clamped (`--story-lines`) to stay inside the panel and off the head; never position it per kind in CSS (that is what covered the POW burst and the agent's head on narrow panels). Drawer prose (a prompt, a helper's answer) links rooted paths only. ⚠️ Every file a panel or drawer opens goes through `_storyOpenFile()`: keyboard focus moves to the preview's close button, Tab cycles inside the preview while it is open (`_storyTrapTab`), and Escape gives focus back to what opened it. ⚠️ Panels are kept by IDENTITY (kind + first event id, `rt.identity`), never by index: a fold into a montage near the start shifts every later index and must not rebuild (and re-animate) them. ⚠️ A balloon's text is `.story-balloon-text`, after the visually hidden speaker words (`.story-vh`, "Claude says: "): the clamp and Save image must find the text span by class, never `firstElementChild` (that is how long balloons once stopped clamping). ⚠️ The drawer keeps its nodes when a refresh changes nothing (`st.drawerSig`), and a real change rebuilds and gives focus back to the control that does the same thing; helper steps are filled AFTER that decision. It is bound to its turn (`st.drawer.pageId`): when the newest turn moves on, the page holds that turn (`st.drawerHolds`) until the drawer closes. It starts under the bar (`--story-bar-h`, measured by the ResizeObserver), and where it covers the whole page `.story-main` is `inert` (`_storyDrawerCover`). ⚠️ Text colours come from the `--story-*-text` tokens (4.5:1 in both skins); the accents themselves are for fills and borders. Tests: `test/story-mode.test.ts`, `test/routes/story-routes.test.ts`, `test/story-mode-ui.test.ts` (JSDOM, every scene drawn in every shape), `test/story-corpus.test.ts` (eleven sanitized real sessions, every page pinned), `test/story-mode.browser.test.ts` (browser suite).
 
 **Header button visibility**: most header controls are opt-in and hidden by a marker class (`btn-multimonitor--hidden`, `btn-response-viewer-header--hidden`, `btn-file-viewer--hidden`, `btn-cron--hidden`, and the desktop-gated `btn-split--hidden` / `btn-tile-grid--hidden`, which also need a `@media (max-width: 1179px)` backstop) that `applyHeaderVisibilitySettings()` (settings-ui.js) toggles after settings load; the multi-monitor button is instead stripped at render by `renderIndexHtml`. ⚠️ Hiding must go through the marker class: the base rules are `display:inline-flex !important`, so an inline style cannot override them. Current desktop default is WS/CPU/MEM + File Viewer + Tiles (1180px and wider) + gear, with the token chip and lifecycle-log button OFF. ⚠️ New header controls must not leak onto phones; `test/mobile-header-buttons-policy.test.ts` is the static guard. → [architecture-invariants#header-button-visibility-multi-monitor-response-viewer-file-viewer-cron](../../docs/architecture-invariants.md#header-button-visibility-multi-monitor-response-viewer-file-viewer-cron)
 
diff --git a/test/fixtures/story-corpus/background-helpers-reports.expected.json b/test/fixtures/story-corpus/background-helpers-reports.expected.json
new file mode 100644
index 00000000..4f706153
--- /dev/null
+++ b/test/fixtures/story-corpus/background-helpers-reports.expected.json
@@ -0,0 +1,449 @@
+[
+  {
+    "prompt": "Build a tiny Python word-count tool here (no git, no installs). First, use the Agent tool TWICE with",
+    "origin": "human",
+    "complete": true,
+    "interrupted": false,
+    "durationMs": 36371,
+    "toolCalls": 5,
+    "filesChanged": 2,
+    "added": 44,
+    "removed": 0,
+    "helpers": 2,
+    "helpersRunning": 0,
+    "panels": [
+      {
+        "kind": "mission",
+        "ok": null,
+        "story": "You give Claude a job.",
+        "director": "Prompt · 87 words",
+        "balloon": "Build a tiny Python word-count tool here (no git, no installs). First, use the Agent tool TWICE with run_in_background: true to start two background helper agents in parallel: helper A writes README.md describing wordcount.py (usage: python3 wordcount.py FILE prints lines, words, chars), helper B writes extra pytest tests in tests/test_extra.py for count(text) returning a (lines, words, chars) tu…",
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "backup",
+        "ok": null,
+        "story": "Claude sends 2 helpers off to work in the background.",
+        "director": "Agent ×2 · general-purpose · 8 calls inside",
+        "balloon": "Starting both helpers in parallel first.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 2
+      },
+      {
+        "kind": "fix",
+        "ok": null,
+        "story": "Claude writes 2 new files.",
+        "director": "Write ×2 · wordcount.py +23 · test_basic.py +21",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 2
+      },
+      {
+        "kind": "check",
+        "ok": true,
+        "story": "The tests pass.",
+        "director": "python3 -m pytest -q 2>&1 → ok · 4 passed",
+        "balloon": null,
+        "tests": {
+          "passed": 4,
+          "failed": 0
+        },
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "complete",
+        "ok": null,
+        "story": "Done in 36 seconds.",
+        "director": "turn_duration · 36 s · 5 tool calls · 2 files changed · 2 helpers",
+        "balloon": "I wrote wordcount.py and tests/test_basic.py, and the one python3 -m pytest -q run passed 4 of 4 tests.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 0
+      }
+    ]
+  },
+  {
+    "prompt": "Agent \"Helper A: write README.md\" finished",
+    "origin": "task",
+    "complete": true,
+    "interrupted": false,
+    "durationMs": 14201,
+    "toolCalls": 1,
+    "filesChanged": 0,
+    "added": 0,
+    "removed": 0,
+    "helpers": 0,
+    "helpersRunning": 0,
+    "panels": [
+      {
+        "kind": "mission",
+        "ok": null,
+        "story": "A background job reports back.",
+        "director": "Prompt · 6 words · task",
+        "balloon": "Agent \"Helper A: write README.md\" finished",
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "investigate",
+        "ok": null,
+        "story": "Claude reads 1 file to find its way around.",
+        "director": "Bash · cat /work/cases/story-r6-b/README.md",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "complete",
+        "ok": null,
+        "story": "Done in 14 seconds.",
+        "director": "turn_duration · 14 s · 1 tool call",
+        "balloon": "Helper A has finished writing README.md, and I checked it against the code.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 0
+      }
+    ]
+  },
+  {
+    "prompt": "Agent \"Helper B: write extra pytest tests\" finished",
+    "origin": "task",
+    "complete": true,
+    "interrupted": false,
+    "durationMs": 11217,
+    "toolCalls": 1,
+    "filesChanged": 0,
+    "added": 0,
+    "removed": 0,
+    "helpers": 0,
+    "helpersRunning": 0,
+    "panels": [
+      {
+        "kind": "mission",
+        "ok": null,
+        "story": "A background job reports back.",
+        "director": "Prompt · 8 words · task",
+        "balloon": "Agent \"Helper B: write extra pytest tests\" finished",
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "check",
+        "ok": true,
+        "story": "The tests pass.",
+        "director": "python3 -m pytest -q 2>&1 → ok · 22 passed",
+        "balloon": "Helper B finished; running the full suite against the real wordcount.py now.",
+        "tests": {
+          "passed": 22,
+          "failed": 0
+        },
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "complete",
+        "ok": null,
+        "story": "Done in 11 seconds.",
+        "director": "turn_duration · 11 s · 1 tool call",
+        "balloon": "Both helpers have finished.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 0
+      }
+    ]
+  },
+  {
+    "prompt": "Follow-up, no git: first start ONE background helper with the Agent tool (run_in_background: true) t",
+    "origin": "human",
+    "complete": true,
+    "interrupted": false,
+    "durationMs": 51878,
+    "toolCalls": 5,
+    "filesChanged": 3,
+    "added": 18,
+    "removed": 4,
+    "helpers": 1,
+    "helpersRunning": 0,
+    "panels": [
+      {
+        "kind": "mission",
+        "ok": null,
+        "story": "You give Claude a job.",
+        "director": "Prompt · 93 words",
+        "balloon": "Follow-up, no git: first start ONE background helper with the Agent tool (run_in_background: true) that writes CHANGELOG.md slowly: it must run sleep 20 with Bash, then Write CHANGELOG.md with one entry, then run sleep 20 again, then add a second entry with the Edit tool. Next, start the full test suite in the background with the Bash tool's run_in_background: true parameter, as: sleep 30; python…",
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "backup",
+        "ok": null,
+        "story": "Claude sends 1 helper off to work in the background.",
+        "director": "Agent · general-purpose · 4 calls inside",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "check",
+        "ok": true,
+        "story": "The tests run in the background and pass.",
+        "director": "python3 -m pytest -q → ok",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "fix",
+        "ok": null,
+        "story": "Claude changes 3 files.",
+        "director": "Write ×2 · Bash · wordcount.py +11 −4 · test_basic.py +7 · README.md ±0",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 3
+      },
+      {
+        "kind": "complete",
+        "ok": null,
+        "story": "Done in 52 seconds.",
+        "director": "turn_duration · 52 s · 5 tool calls · 3 files changed · 1 helper",
+        "balloon": "I added the --json flag and started the helper and the test run as you asked.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 0
+      }
+    ]
+  },
+  {
+    "prompt": "Background command \"Run full test suite after a 30s delay\" completed (exit code 0)",
+    "origin": "task",
+    "complete": true,
+    "interrupted": false,
+    "durationMs": 7033,
+    "toolCalls": 1,
+    "filesChanged": 0,
+    "added": 0,
+    "removed": 0,
+    "helpers": 0,
+    "helpersRunning": 0,
+    "panels": [
+      {
+        "kind": "mission",
+        "ok": null,
+        "story": "A background job reports back.",
+        "director": "Prompt · 14 words · task",
+        "balloon": "Background command \"Run full test suite after a 30s delay\" completed (exit code 0)",
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "check",
+        "ok": true,
+        "story": "The tests pass.",
+        "director": "tail -5 /tmp/claude/-work-cases-story-r6-b/a1a47282-e3ca-45… → ok · 23 passed",
+        "balloon": null,
+        "tests": {
+          "passed": 23,
+          "failed": 0
+        },
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "complete",
+        "ok": null,
+        "story": "Done in 7 seconds.",
+        "director": "turn_duration · 7 s · 1 tool call",
+        "balloon": "The background test run finished and all 23 tests passed, including the new --json test.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 0
+      }
+    ]
+  },
+  {
+    "prompt": "Agent \"Helper: write CHANGELOG.md slowly\" finished",
+    "origin": "task",
+    "complete": true,
+    "interrupted": false,
+    "durationMs": 8053,
+    "toolCalls": 1,
+    "filesChanged": 0,
+    "added": 0,
+    "removed": 0,
+    "helpers": 0,
+    "helpersRunning": 0,
+    "panels": [
+      {
+        "kind": "mission",
+        "ok": null,
+        "story": "A background job reports back.",
+        "director": "Prompt · 6 words · task",
+        "balloon": "Agent \"Helper: write CHANGELOG.md slowly\" finished",
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "investigate",
+        "ok": null,
+        "story": "Claude reads 1 file to find its way around.",
+        "director": "Bash · cat /work/cases/story-r6-b/CHANGELOG.md",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "complete",
+        "ok": null,
+        "story": "Done in 8 seconds.",
+        "director": "turn_duration · 8 s · 1 tool call",
+        "balloon": "Everything you asked for this round is done.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 0
+      }
+    ]
+  },
+  {
+    "prompt": "Small follow-up, no git: run python3 -m pytest -q once, then show the first 5 lines of CHANGELOG.md ",
+    "origin": "human",
+    "complete": true,
+    "interrupted": false,
+    "durationMs": 12517,
+    "toolCalls": 2,
+    "filesChanged": 0,
+    "added": 0,
+    "removed": 0,
+    "helpers": 0,
+    "helpersRunning": 0,
+    "panels": [
+      {
+        "kind": "mission",
+        "ok": null,
+        "story": "You give Claude a job.",
+        "director": "Prompt · 26 words",
+        "balloon": "Small follow-up, no git: run python3 -m pytest -q once, then show the first 5 lines of CHANGELOG.md with head -5, then reply with one sentence.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "check",
+        "ok": true,
+        "story": "The tests pass.",
+        "director": "python3 -m pytest -q 2>&1 → ok · 23 passed",
+        "balloon": null,
+        "tests": {
+          "passed": 23,
+          "failed": 0
+        },
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "investigate",
+        "ok": null,
+        "story": "Claude reads 1 file to find its way around.",
+        "director": "Bash · head -5 /work/cases/story-r6-b/CHANGELOG.md",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "complete",
+        "ok": null,
+        "story": "Done in 13 seconds.",
+        "director": "turn_duration · 13 s · 2 tool calls",
+        "balloon": "All 23 tests passed, and the first five lines of CHANGELOG.md are the # Changelog title, the ## 2026-10-18 heading and the wordcount.py entry, with the --json entry on line 6, just past what head -5 shows.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 0
+      }
+    ]
+  },
+  {
+    "prompt": "Reply with just the word OK, no tools.",
+    "origin": "human",
+    "complete": true,
+    "interrupted": false,
+    "durationMs": 2547,
+    "toolCalls": 0,
+    "filesChanged": 0,
+    "added": 0,
+    "removed": 0,
+    "helpers": 0,
+    "helpersRunning": 0,
+    "panels": [
+      {
+        "kind": "mission",
+        "ok": null,
+        "story": "You give Claude a job.",
+        "director": "Prompt · 8 words",
+        "balloon": "Reply with just the word OK, no tools.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "complete",
+        "ok": null,
+        "story": "Done in 3 seconds.",
+        "director": "turn_duration · 3 s · 0 tool calls",
+        "balloon": "OK",
+        "tests": null,
+        "roundsOk": null,
+        "events": 0
+      }
+    ]
+  },
+  {
+    "prompt": "Reply with just the word DONE, no tools.",
+    "origin": "human",
+    "complete": true,
+    "interrupted": false,
+    "durationMs": 5054,
+    "toolCalls": 0,
+    "filesChanged": 0,
+    "added": 0,
+    "removed": 0,
+    "helpers": 0,
+    "helpersRunning": 0,
+    "panels": [
+      {
+        "kind": "mission",
+        "ok": null,
+        "story": "You give Claude a job.",
+        "director": "Prompt · 8 words",
+        "balloon": "Reply with just the word DONE, no tools.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "complete",
+        "ok": null,
+        "story": "Done in 5 seconds.",
+        "director": "turn_duration · 5 s · 0 tool calls",
+        "balloon": "DONE",
+        "tests": null,
+        "roundsOk": null,
+        "events": 0
+      }
+    ]
+  }
+]
diff --git a/test/fixtures/story-corpus/background-helpers-reports.jsonl b/test/fixtures/story-corpus/background-helpers-reports.jsonl
new file mode 100644
index 00000000..73a53298
--- /dev/null
+++ b/test/fixtures/story-corpus/background-helpers-reports.jsonl
@@ -0,0 +1,81 @@
+{"type":"user","timestamp":"2026-10-18T11:15:48.550Z","uuid":"fa54d06f-2223-4efc-a491-e83ffc7f1a23","promptId":"0c9d9ef2-c192-426b-88c3-d7ae70c9391c","isSidechain":false,"turnOrigin":"human","promptSource":"typed","cwd":"/work/cases/story-r6-b","message":{"role":"user","content":"Build a tiny Python word-count tool here (no git, no installs). First, use the Agent tool TWICE with run_in_background: true to start two background helper agents in parallel: helper A writes README.md describing wordcount.py (usage: python3 wordcount.py FILE prints lines, words, chars), helper B writes extra pytest tests in tests/test_extra.py for count(text) returning a (lines, words, chars) tuple. While they run, write wordcount.py and tests/test_basic.py yourself and run python3 -m pytest -q once. Then end your turn right away WITHOUT waiting for or checking on the helpers."}}
+{"type":"assistant","timestamp":"2026-10-18T11:15:58.314Z","uuid":"4c5f927c-a941-49a1-90bd-83906b4b3da9","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:15:58.461Z","uuid":"ab4dd1d4-5582-436b-997e-b51addb7c781","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"text","text":"Starting both helpers in parallel first."}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:03.316Z","uuid":"20add903-dbad-42cf-9f06-42f496dd6299","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01SHNiC1hWyNoL8VZpKVVzby","name":"Agent","input":{"description":"Helper A: write README.md","subagent_type":"general-purpose","run_in_background":"true","prompt":"You are helper A. Write a single file: /work/cases/story-r6-b/README.md\n\nIt documents a tiny Python word-count tool, wordcount.py, which another agent is writing at the same time in that same directory (do not create or edit wordcount.py or any other file; only README.md).\n\nFacts to document:\n- Usage: `python3 wordcount.py FILE` prints the line, word and character counts of FILE, separated by spaces on one line, like `3 12 64` (lines words chars).\n- It also exposes a function `count(text)` that returns a `(lines, words, chars)` tuple, where lines = len(text.splitlines()), words = len(text.split()) (whitespace-separated), chars = len(text) (Python characters, not bytes).\n- Standard library only, no dependencies.\n- Tests: run `python3 -m pytest -q` from the project root (tests live in tests/test_basic.py and tests/test_extra.py).\n\nKeep the README short and plain (a title, one-sentence description, Usage, Library usage, Running tests). Constraints: no git commands, no package installs, touch no file other than README.md. Reply with just the absolute path of the file you wrote."},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:16:03.394Z","uuid":"d448aa1a-6e4f-47dc-ad8d-2aff8e0dfc09","promptId":"0c9d9ef2-c192-426b-88c3-d7ae70c9391c","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01SHNiC1hWyNoL8VZpKVVzby","content":[{"type":"text","text":"Async agent launched successfully. (This tool result is internal metadata — never quote or paste any part of it, including the agentId below, into a user-facing reply.)\nagentId: a049d5a0967560a66 (internal ID - do not mention to user. Use SendMessage with to: 'a049d5a0967560a66', summary: '<5-10 word recap>' to continue this agent.)\nThe agent is working in the background. You will be notified automatically when it completes. You know nothing about its results until that notification arrives — do not report, assume, or predict them; continue other work or respond to the user in the meantime.\nDo not duplicate this agent's work — avoid working with the same files or topics it is using.\noutput_file: /tmp/claude/-work-cases-story-r6-b/a1a47282-e3ca-45d0-ba2b-99c4ce453a4d/tasks/a049d5a0967560a66.output\nDo NOT Read or tail this file via the shell tool — it is the full subagent JSONL transcript and reading it will overflow your context. If the user asks for progress, say the agent is still running; you'll get a completion notification."}],"is_error":false}]},"toolUseResult":{"status":"async_launched","isAsync":true,"agentId":"a049d5a0967560a66"}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:08.393Z","uuid":"e19e215e-9858-43d1-a9ce-2cb3eebfc666","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01Gn2cmMWhaLN7jBwr5eH6N7","name":"Agent","input":{"description":"Helper B: write extra pytest tests","subagent_type":"general-purpose","run_in_background":"true","prompt":"You are helper B. Write a single file: /work/cases/story-r6-b/tests/test_extra.py (create the tests/ directory if it does not exist yet).\n\nAnother agent is writing wordcount.py in the project root at the same time; do not create or edit wordcount.py, tests/test_basic.py, or any other file. Only write tests/test_extra.py.\n\nThe function under test: `from wordcount import count`. `count(text)` returns a `(lines, words, chars)` tuple with exactly these semantics:\n- lines = len(text.splitlines())\n- words = len(text.split())  (any run of whitespace separates words)\n- chars = len(text)  (Python str length, not bytes)\n\nWrite a handful of focused pytest tests for edge cases, e.g.: empty string -> (0, 0, 0); text without a trailing newline; multiple consecutive spaces/tabs between words; whitespace-only text; blank lines in the middle; Windows \"\\r\\n\" line endings; non-ASCII/unicode text (chars counts characters, not bytes); return value is a tuple of length 3. Compute every expected value by hand from the semantics above and double-check it. Use pytest.mark.parametrize where it keeps things compact. Tests will be run with `python3 -m pytest -q` from the project root, so the plain `from wordcount import count` import works.\n\nConstraints: no git commands, no package installs. You don't need to run the tests (wordcount.py may not exist yet). Reply with just the absolute path of the file you wrote."},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:16:08.424Z","uuid":"6d8554c2-7391-4cea-80b1-004d66e035b0","promptId":"0c9d9ef2-c192-426b-88c3-d7ae70c9391c","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01Gn2cmMWhaLN7jBwr5eH6N7","content":[{"type":"text","text":"Async agent launched successfully. (This tool result is internal metadata — never quote or paste any part of it, including the agentId below, into a user-facing reply.)\nagentId: a4600c2c686c584cf (internal ID - do not mention to user. Use SendMessage with to: 'a4600c2c686c584cf', summary: '<5-10 word recap>' to continue this agent.)\nThe agent is working in the background. You will be notified automatically when it completes. You know nothing about its results until that notification arrives — do not report, assume, or predict them; continue other work or respond to the user in the meantime.\nDo not duplicate this agent's work — avoid working with the same files or topics it is using.\noutput_file: /tmp/claude/-work-cases-story-r6-b/a1a47282-e3ca-45d0-ba2b-99c4ce453a4d/tasks/a4600c2c686c584cf.output\nDo NOT Read or tail this file via the shell tool — it is the full subagent JSONL transcript and reading it will overflow your context. If the user asks for progress, say the agent is still running; you'll get a completion notification."}],"is_error":false}]},"toolUseResult":{"status":"async_launched","isAsync":true,"agentId":"a4600c2c686c584cf"}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:12.828Z","uuid":"dc383a48-69c5-4e6a-80af-1c1e23ea73a6","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01Bhx5w5AWjtCyeh9sGPSV5T","name":"Write","input":{"file_path":"/work/cases/story-r6-b/wordcount.py","content":"(in the result)"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:16:13.130Z","uuid":"afb518c7-d0be-4738-8a80-81327e9cf9b2","promptId":"0c9d9ef2-c192-426b-88c3-d7ae70c9391c","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01Bhx5w5AWjtCyeh9sGPSV5T","content":"File created successfully at: /work/cases/story-r6-b/wordcount.py (file state is current in your context — no need to Read it back)","is_error":false}]},"toolUseResult":{"type":"create","filePath":"/work/cases/story-r6-b/wordcount.py","content":"\"\"\"Tiny word-count tool: prints lines, words and chars of a file.\"\"\"\n\nimport sys\n\n\ndef count(text):\n    \"\"\"Return a (lines, words, chars) tuple for text.\"\"\"\n    return len(text.splitlines()), len(text.split()), len(text)\n\n\ndef main(argv=None):\n    argv = sys.argv[1:] if argv is None else argv\n    if len(argv) != 1:\n        print(\"usage: python3 wordcount.py FILE\", file=sys.stderr)\n        return 2\n    with open(argv[0], encoding=\"utf-8\") as f:\n        lines, words, chars = count(f.read())\n    print(lines, words, chars)\n    return 0\n\n\nif __name__ == \"__main__\":\n    sys.exit(main())\n","structuredPatch":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:15.224Z","uuid":"b9f3e2f6-0ba0-41c9-bf5b-3284a5ae5d8d","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_016LJYrgja89LvVxw41x4Tuc","name":"Write","input":{"file_path":"/work/cases/story-r6-b/tests/test_basic.py","content":"(in the result)"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:16:15.672Z","uuid":"8d6dd5ad-a052-4972-bbbd-a8a9d6c3790d","promptId":"0c9d9ef2-c192-426b-88c3-d7ae70c9391c","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_016LJYrgja89LvVxw41x4Tuc","content":"File created successfully at: /work/cases/story-r6-b/tests/test_basic.py (file state is current in your context — no need to Read it back)","is_error":false}]},"toolUseResult":{"type":"create","filePath":"/work/cases/story-r6-b/tests/test_basic.py","content":"from wordcount import count, main\n\n\ndef test_simple_text():\n    assert count(\"hello world\\nfoo bar baz\\n\") == (2, 5, 24)\n\n\ndef test_single_line_no_newline():\n    assert count(\"one two three\") == (1, 3, 13)\n\n\ndef test_main_prints_counts(tmp_path, capsys):\n    path = tmp_path / \"sample.txt\"\n    path.write_text(\"a b\\nc\\n\", encoding=\"utf-8\")\n    assert main([str(path)]) == 0\n    assert capsys.readouterr().out == \"2 3 6\\n\"\n\n\ndef test_main_usage_error(capsys):\n    assert main([]) == 2\n    assert \"usage\" in capsys.readouterr().err\n","structuredPatch":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:16.205Z","uuid":"06e19395-f09c-45f4-b423-8f4c4f5876f7","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01QTBHDDbqhRp4hta32h6hph","name":"Bash","input":{"command":"python3 -m pytest -q 2>&1 | tail -20","description":"Run the test suite once"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:16:17.535Z","uuid":"271c9753-0a64-4955-8278-e7e2b8231d20","promptId":"0c9d9ef2-c192-426b-88c3-d7ae70c9391c","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01QTBHDDbqhRp4hta32h6hph","content":"....                                                                     [100%]\n4 passed in 0.04s","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:24.779Z","uuid":"8031c6ad-e7a3-4210-aa81-a378022a0a71","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:24.800Z","uuid":"4f96340b-84f3-44d0-875d-f5591fe0d30e","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"text","text":"I wrote `wordcount.py` and `tests/test_basic.py`, and the one `python3 -m pytest -q` run passed 4 of 4 tests. Only 4 tests ran, so `tests/test_extra.py` from helper B wasn't there yet and those tests haven't been run.\n\nThe two helpers are still working in the background and I haven't checked on them, so I can't tell you anything about their output yet:\n- **Helper A** is writing `README.md`.\n- **Helper B** is writing `tests/test_extra.py`.\n\nI told helper B to test against the same counting rules the tool uses, so its tests should agree with it. The tool counts lines with `splitlines()`, words as anything separated by whitespace, and characters as Python string length (characters, not bytes).\n\n`python3 wordcount.py FILE` prints the three counts on one line, like `2 5 24`. If you don't give it exactly one file, it prints a usage message and exits with code 2.\n\nI made no git commits: you said no git, and that overrides the commit-after-every-change rule in CLAUDE.md. Once both helpers finish, running `python3 -m pytest -q` again will include helper B's tests.\n\nFiles I created:\n- /work/cases/story-r6-b/wordcount.py\n- /work/cases/story-r6-b/tests/test_basic.py"}]}}
+{"type":"system","subtype":"stop_hook_summary","timestamp":"2026-10-18T11:16:24.907Z","uuid":"88346f4f-96eb-450c-be72-83b352998976","isSidechain":false,"cwd":"/work/cases/story-r6-b","preventedContinuation":false}
+{"type":"system","subtype":"turn_duration","timestamp":"2026-10-18T11:16:24.921Z","uuid":"57b4652a-27a6-45cc-b121-9fe2a70b2d9f","isSidechain":false,"isMeta":false,"cwd":"/work/cases/story-r6-b","durationMs":36440}
+{"type":"user","timestamp":"2026-10-18T11:16:35.340Z","uuid":"04e84f50-f83c-4b2a-80ee-a7af17df261a","promptId":"56c30bad-477f-4aed-a72f-dff2b88c1dec","isSidechain":false,"turnOrigin":"task_notification","promptSource":"system","cwd":"/work/cases/story-r6-b","message":{"role":"user","content":"<task-notification>\n<task-id>a049d5a0967560a66</task-id>\n<tool-use-id>toolu_01SHNiC1hWyNoL8VZpKVVzby</tool-use-id>\n<output-file>/tmp/claude/-work-cases-story-r6-b/a1a47282-e3ca-45d0-ba2b-99c4ce453a4d/tasks/a049d5a0967560a66.output</output-file>\n<status>completed</status>\n<summary>Agent \"Helper A: write README.md\" finished</summary>\n<note>A task-notification fires each time this agent stops with no live background children of its own. The user can send it another message and resume it, so the same task-id may notify more than once.</note>\n<result>/work/cases/story-r6-b/README.md</result>\n<usage><subagent_tokens>32827</subagent_tokens><tool_uses>5</tool_uses><duration_ms>31950</duration_ms></usage>\n</task-notification>"}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:40.727Z","uuid":"da3a2a28-a155-4fd0-8205-24d88d84d045","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:41.728Z","uuid":"5926ef54-4d00-4aff-90f0-c7bd6196e355","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_0112cnZiYui7TXj3D1d1NpnX","name":"Bash","input":{"command":"cat /work/cases/story-r6-b/README.md","description":"Show the README helper A wrote"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:16:41.819Z","uuid":"89343c40-0945-46de-8faa-57e5d9abd376","promptId":"56c30bad-477f-4aed-a72f-dff2b88c1dec","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_0112cnZiYui7TXj3D1d1NpnX","content":"# wordcount\n\nA tiny Python tool that counts the lines, words and characters in a text file, using only the standard library.\n\n## Usage\n\n```sh\npython3 wordcount.py FILE\n```\n\nPrints the line, word and character counts of `FILE` on one line, separated by spaces (lines words chars):\n\n```\n3 12 64\n```\n\n## Library usage\n\n```python\nfrom wordcount import count\n\nlines, words, chars = count(\"hello world\\nsecond line\\n\")  # (2, 4, 24)\n```\n\n`count(text)` returns a `(lines, words, chars)` tuple:\n\n- `lines` is `len(text.splitlines())`\n- `words` is `len(text.split())`, so words are separated by whitespace\n- `chars` is `len(text)`, which counts Python characters, not bytes\n\n## Running tests\n\nFrom the project root:\n\n```sh\npython3 -m pytest -q\n```\n\nThe tests are in `tests/test_basic.py` and `tests/test_extra.py`.","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:49.275Z","uuid":"ca4d7ffd-5c1f-4b89-9098-5c125d325085","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:49.312Z","uuid":"3409f73b-8b04-48ad-b901-db530cb55b81","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"text","text":"Helper A has finished writing `README.md`, and I checked it against the code. It describes the command-line usage, `count(text)` and how to run the tests correctly, and its example (`(2, 4, 24)`) is right. It doesn't mention that running the tool without exactly one file prints a usage message and exits with code 2; I can add that line if you want it.\n\nHelper B is still writing `tests/test_extra.py`.\n\n/work/cases/story-r6-b/README.md"}]}}
+{"type":"system","subtype":"stop_hook_summary","timestamp":"2026-10-18T11:16:49.531Z","uuid":"39f78376-e637-4b85-9f4a-299539ca5a23","isSidechain":false,"cwd":"/work/cases/story-r6-b","preventedContinuation":false}
+{"type":"system","subtype":"turn_duration","timestamp":"2026-10-18T11:16:49.541Z","uuid":"3fb0fa59-59d7-43e0-9e8c-0d6ca85c4442","isSidechain":false,"isMeta":false,"cwd":"/work/cases/story-r6-b","durationMs":14223}
+{"type":"user","timestamp":"2026-10-18T11:16:55.015Z","uuid":"a2282e16-a1d4-4c86-b4f8-8c778d141ac8","promptId":"cb2f43b7-2205-461d-b4f6-5778a7ec71f9","isSidechain":false,"turnOrigin":"task_notification","promptSource":"system","cwd":"/work/cases/story-r6-b","message":{"role":"user","content":"<task-notification>\n<task-id>a4600c2c686c584cf</task-id>\n<tool-use-id>toolu_01Gn2cmMWhaLN7jBwr5eH6N7</tool-use-id>\n<output-file>/tmp/claude/-work-cases-story-r6-b/a1a47282-e3ca-45d0-ba2b-99c4ce453a4d/tasks/a4600c2c686c584cf.output</output-file>\n<status>completed</status>\n<summary>Agent \"Helper B: write extra pytest tests\" finished</summary>\n<note>A task-notification fires each time this agent stops with no live background children of its own. The user can send it another message and resume it, so the same task-id may notify more than once.</note>\n<result>I wrote the file: /work/cases/story-r6-b/tests/test_extra.py\n\nIt has 18 test cases and I worked out each expected value by hand. I haven't run it against the real `wordcount.py`. To check my values, I ran it against a stand-in `count` kept in my scratchpad that does exactly what you specified (`splitlines()`, `split()`, `len()`), and all 18 passed. Nothing else in the project was changed.</result>\n<usage><subagent_tokens>35835</subagent_tokens><tool_uses>3</tool_uses><duration_ms>46556</duration_ms></usage>\n</task-notification>"}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:56.986Z","uuid":"4c533bcf-00b1-4718-a411-60a3e93a9d9a","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"text","text":"Helper B finished; running the full suite against the real `wordcount.py` now."}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:58.229Z","uuid":"339fa806-32fa-4883-add1-82d9a70def08","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01WAyWsRPDTHJaa4GfjMy875","name":"Bash","input":{"command":"python3 -m pytest -q 2>&1 | tail -20 && ls -R","description":"Run full test suite and list project files"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:16:59.471Z","uuid":"436830a1-b4c3-4795-b009-69e02c2146c2","promptId":"cb2f43b7-2205-461d-b4f6-5778a7ec71f9","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01WAyWsRPDTHJaa4GfjMy875","content":"......................                                                   [100%]\n22 passed in 0.10s\n.:\nCLAUDE.md\n__pycache__\nREADME.md\nsrc\ntests\nwordcount.py\n\n./__pycache__:\nwordcount.cpython-312.pyc\n\n./src:\n\n./tests:\n__pycache__\ntest_basic.py\ntest_extra.py\n\n./tests/__pycache__:\ntest_basic.cpython-312-pytest-9.0.2.pyc\ntest_extra.cpython-312-pytest-9.0.2.pyc","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:17:06.103Z","uuid":"4f7aa1ed-0ff7-4cc5-a89c-30cd1834f327","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:17:06.120Z","uuid":"9e46a6f2-c680-4310-a6e8-a4270571d3da","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"text","text":"Both helpers have finished. Against the real `wordcount.py`, all 22 tests pass: my 4 in `tests/test_basic.py` and helper B's 18 in `tests/test_extra.py`. Helper B's tests cover edge cases like empty text, tabs and repeated spaces, `\\r\\n` line endings and non-ASCII text.\n\nI made no git commits, since you said no git.\n\nAll files in the project:\n- /work/cases/story-r6-b/wordcount.py\n- /work/cases/story-r6-b/tests/test_basic.py\n- /work/cases/story-r6-b/tests/test_extra.py\n- /work/cases/story-r6-b/README.md"}]}}
+{"type":"system","subtype":"stop_hook_summary","timestamp":"2026-10-18T11:17:06.223Z","uuid":"4d027c13-3bc7-4986-bf4c-0f3484a901de","isSidechain":false,"cwd":"/work/cases/story-r6-b","preventedContinuation":false}
+{"type":"system","subtype":"turn_duration","timestamp":"2026-10-18T11:17:06.232Z","uuid":"4aba496c-3228-406e-bdc5-35d3163539b8","isSidechain":false,"isMeta":false,"cwd":"/work/cases/story-r6-b","durationMs":77752}
+{"type":"user","timestamp":"2026-10-18T11:18:53.476Z","uuid":"45a5621f-abfe-49d7-b6ce-d0d2b869ddee","promptId":"919ef732-136b-451f-904e-c7cfdc6a1e60","isSidechain":false,"turnOrigin":"human","promptSource":"typed","cwd":"/work/cases/story-r6-b","message":{"role":"user","content":"Follow-up, no git: first start ONE background helper with the Agent tool (run_in_background: true) that writes CHANGELOG.md slowly: it must run sleep 20 with Bash, then Write CHANGELOG.md with one entry, then run sleep 20 again, then add a second entry with the Edit tool. Next, start the full test suite in the background with the Bash tool's run_in_background: true parameter, as: sleep 30; python3 -m pytest -q. Then add a --json flag to wordcount.py yourself (prints {\"lines\":..,\"words\":..,\"chars\":..}). Then end your turn right away without waiting for the helper or the background tests."}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:23.099Z","uuid":"0548f16b-d0c3-4cfd-800d-4160159bdb8c","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:27.939Z","uuid":"107e652f-cc47-41ea-8104-b24879cf0fa7","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01SG8m1E8z8NrUjg7AUC82ci","name":"Agent","input":{"description":"Helper: write CHANGELOG.md slowly","subagent_type":"general-purpose","run_in_background":"true","prompt":"You are a helper. Your only job is to create /work/cases/story-r6-b/CHANGELOG.md in four steps, done strictly in this order:\n\n1. Run `sleep 20` with the Bash tool (foreground, not in the background).\n2. Use the Write tool to create CHANGELOG.md with exactly this content:\n\n```\n# Changelog\n\n## 2026-10-18\n\n- Added `wordcount.py`: `python3 wordcount.py FILE` prints the line, word and character counts of FILE, and `count(text)` returns a `(lines, words, chars)` tuple.\n```\n\n3. Run `sleep 20` with the Bash tool again (foreground).\n4. Use the Edit tool (not Write, not a shell command) to add a second entry directly below the first bullet, so the file ends with these two bullets:\n\n```\n- Added `wordcount.py`: `python3 wordcount.py FILE` prints the line, word and character counts of FILE, and `count(text)` returns a `(lines, words, chars)` tuple.\n- Added a `--json` flag: `python3 wordcount.py --json FILE` prints the counts as `{\"lines\":..,\"words\":..,\"chars\":..}`.\n```\n\nConstraints: no git commands, no package installs, and touch no file other than CHANGELOG.md (another agent is editing wordcount.py, tests and README.md at the same time). Reply with just the absolute path of CHANGELOG.md."},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:19:27.967Z","uuid":"77ec2918-02aa-46ab-904c-9d9119f8a5dd","promptId":"919ef732-136b-451f-904e-c7cfdc6a1e60","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01SG8m1E8z8NrUjg7AUC82ci","content":[{"type":"text","text":"Async agent launched successfully. (This tool result is internal metadata — never quote or paste any part of it, including the agentId below, into a user-facing reply.)\nagentId: a67f92982e63a0df1 (internal ID - do not mention to user. Use SendMessage with to: 'a67f92982e63a0df1', summary: '<5-10 word recap>' to continue this agent.)\nThe agent is working in the background. You will be notified automatically when it completes. You know nothing about its results until that notification arrives — do not report, assume, or predict them; continue other work or respond to the user in the meantime.\nDo not duplicate this agent's work — avoid working with the same files or topics it is using.\noutput_file: /tmp/claude/-work-cases-story-r6-b/a1a47282-e3ca-45d0-ba2b-99c4ce453a4d/tasks/a67f92982e63a0df1.output\nDo NOT Read or tail this file via the shell tool — it is the full subagent JSONL transcript and reading it will overflow your context. If the user asks for progress, say the agent is still running; you'll get a completion notification."}],"is_error":false}]},"toolUseResult":{"status":"async_launched","isAsync":true,"agentId":"a67f92982e63a0df1"}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:29.189Z","uuid":"e206b547-92c8-49c7-8c40-f12ce855b0d2","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_016aPdyE753x3GyDsNtsc4H9","name":"Bash","input":{"command":"sleep 30; python3 -m pytest -q","description":"Run full test suite after a 30s delay","run_in_background":true},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:19:29.261Z","uuid":"8ff1c545-1c0b-4260-ba1f-fa6be7b8b1a0","promptId":"919ef732-136b-451f-904e-c7cfdc6a1e60","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_016aPdyE753x3GyDsNtsc4H9","content":"Command running in background with ID: bbhgcbzl3. Output is being written to: /tmp/claude/-work-cases-story-r6-b/a1a47282-e3ca-45d0-ba2b-99c4ce453a4d/tasks/bbhgcbzl3.output. You will be notified when it completes — do not poll that file or sleep while waiting. Read the file only if the user asks for progress, or if you need a line it prints before you can go on, such as a server's ready line or port.","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:32.191Z","uuid":"56accccc-672b-4d97-833c-52d83fc32a8e","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_0174eK8asuX7X4KrxiwfpBX6","name":"Write","input":{"file_path":"/work/cases/story-r6-b/wordcount.py","content":"(in the result)"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:19:32.406Z","uuid":"63e3181e-0796-4130-b775-8fc57853d503","promptId":"919ef732-136b-451f-904e-c7cfdc6a1e60","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_0174eK8asuX7X4KrxiwfpBX6","content":"The file /work/cases/story-r6-b/wordcount.py has been updated successfully. (file state is current in your context — no need to Read it back)","is_error":false}]},"toolUseResult":{"type":"update","filePath":"/work/cases/story-r6-b/wordcount.py","content":"\"\"\"Tiny word-count tool: prints lines, words and chars of a file.\"\"\"\n\nimport json\nimport sys\n\n\ndef count(text):\n    \"\"\"Return a (lines, words, chars) tuple for text.\"\"\"\n    return len(text.splitlines()), len(text.split()), len(text)\n\n\ndef main(argv=None):\n    argv = sys.argv[1:] if argv is None else argv\n    as_json = \"--json\" in argv\n    paths = [arg for arg in argv if arg != \"--json\"]\n    if len(paths) != 1:\n        print(\"usage: python3 wordcount.py [--json] FILE\", file=sys.stderr)\n        return 2\n    with open(paths[0], encoding=\"utf-8\") as f:\n        lines, words, chars = count(f.read())\n    if as_json:\n        counts = {\"lines\": lines, \"words\": words, \"chars\": chars}\n        print(json.dumps(counts, separators=(\",\", \":\")))\n    else:\n        print(lines, words, chars)\n    return 0\n\n\nif __name__ == \"__main__\":\n    sys.exit(main())\n","structuredPatch":[{"oldStart":1,"oldLines":5,"newStart":1,"newLines":6,"lines":[" \"\"\"Tiny word-count tool: prints lines, words and chars of a file.\"\"\""," ","+import json"," import sys"," "," "]},{"oldStart":10,"oldLines":12,"newStart":11,"newLines":18,"lines":[" "," def main(argv=None):","     argv = sys.argv[1:] if argv is None else argv","-    if len(argv) != 1:","-        print(\"usage: python3 wordcount.py FILE\", file=sys.stderr)","+    as_json = \"--json\" in argv","+    paths = [arg for arg in argv if arg != \"--json\"]","+    if len(paths) != 1:","+        print(\"usage: python3 wordcount.py [--json] FILE\", file=sys.stderr)","         return 2","-    with open(argv[0], encoding=\"utf-8\") as f:","+    with open(paths[0], encoding=\"utf-8\") as f:","         lines, words, chars = count(f.read())","-    print(lines, words, chars)","+    if as_json:","+        counts = {\"lines\": lines, \"words\": words, \"chars\": chars}","+        print(json.dumps(counts, separators=(\",\", \":\")))","+    else:","+        print(lines, words, chars)","     return 0"," "," "]}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:35.340Z","uuid":"d981fe83-f4a6-40ea-aba1-84966131cf45","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01Ut89BWhc9oaMTV88tDiTUp","name":"Write","input":{"file_path":"/work/cases/story-r6-b/tests/test_basic.py","content":"(in the result)"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:19:35.425Z","uuid":"e471e58c-e79f-4a0d-9de8-ae3962bc474b","promptId":"919ef732-136b-451f-904e-c7cfdc6a1e60","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01Ut89BWhc9oaMTV88tDiTUp","content":"The file /work/cases/story-r6-b/tests/test_basic.py has been updated successfully. (file state is current in your context — no need to Read it back)","is_error":false}]},"toolUseResult":{"type":"update","filePath":"/work/cases/story-r6-b/tests/test_basic.py","content":"from wordcount import count, main\n\n\ndef test_simple_text():\n    assert count(\"hello world\\nfoo bar baz\\n\") == (2, 5, 24)\n\n\ndef test_single_line_no_newline():\n    assert count(\"one two three\") == (1, 3, 13)\n\n\ndef test_main_prints_counts(tmp_path, capsys):\n    path = tmp_path / \"sample.txt\"\n    path.write_text(\"a b\\nc\\n\", encoding=\"utf-8\")\n    assert main([str(path)]) == 0\n    assert capsys.readouterr().out == \"2 3 6\\n\"\n\n\ndef test_main_json(tmp_path, capsys):\n    path = tmp_path / \"sample.txt\"\n    path.write_text(\"a b\\nc\\n\", encoding=\"utf-8\")\n    assert main([\"--json\", str(path)]) == 0\n    assert capsys.readouterr().out == '{\"lines\":2,\"words\":3,\"chars\":6}\\n'\n\n\ndef test_main_usage_error(capsys):\n    assert main([]) == 2\n    assert \"usage\" in capsys.readouterr().err\n","structuredPatch":[{"oldStart":16,"oldLines":6,"newStart":16,"newLines":13,"lines":["     assert capsys.readouterr().out == \"2 3 6\\n\""," "," ","+def test_main_json(tmp_path, capsys):","+    path = tmp_path / \"sample.txt\"","+    path.write_text(\"a b\\nc\\n\", encoding=\"utf-8\")","+    assert main([\"--json\", str(path)]) == 0","+    assert capsys.readouterr().out == '{\"lines\":2,\"words\":3,\"chars\":6}\\n'","+","+"," def test_main_usage_error(capsys):","     assert main([]) == 2","     assert \"usage\" in capsys.readouterr().err"]}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:37.820Z","uuid":"778bf58a-699e-4ec4-b7ba-f3c033513b31","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01TGLFpLZooLvx2xX9w5tBxJ","name":"Bash","input":{"command":"python3 - <<'EOF'\nfrom pathlib import Path\np = Path(\"README.md\")\ns = p.read_text()\nanchor = \"```\\n3 12 64\\n```\\n\"\nassert s.count(anchor) == 1, \"anchor not found\"\naddition = (\n    \"\\nAdd `--json` to print the counts as a JSON object instead:\\n\\n\"\n    \"```sh\\npython3 wordcount.py --json FILE\\n```\\n\\n\"\n    \"```\\n{\\\"lines\\\":3,\\\"words\\\":12,\\\"chars\\\":64}\\n```\\n\"\n)\np.write_text(s.replace(anchor, anchor + addition))\nEOF\nsed -n '5,25p' README.md","description":"Document the --json flag in the README"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:19:37.973Z","uuid":"3daf9d72-6053-4c79-a08f-43241a0afe26","promptId":"919ef732-136b-451f-904e-c7cfdc6a1e60","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01TGLFpLZooLvx2xX9w5tBxJ","content":"## Usage\n\n```sh\npython3 wordcount.py FILE\n```\n\nPrints the line, word and character counts of `FILE` on one line, separated by spaces (lines words chars):\n\n```\n3 12 64\n```\n\nAdd `--json` to print the counts as a JSON object instead:\n\n```sh\npython3 wordcount.py --json FILE\n```\n\n```\n{\"lines\":3,\"words\":12,\"chars\":64}\n```","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:45.239Z","uuid":"8b71c859-a533-4030-ba37-56cd09f6a602","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:45.255Z","uuid":"c30e551f-7e63-44e3-bf50-eb932eb3d8ec","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"text","text":"I added the `--json` flag and started the helper and the test run as you asked. The helper and the tests are still running in the background; I haven't waited for either, so I don't have results yet.\n\n- **CHANGELOG helper:** started first. It will sleep 20s, write `CHANGELOG.md` with one entry, sleep 20s, then use Edit to add a second entry for `--json`.\n- **Tests:** `sleep 30; python3 -m pytest -q` is running in the background. My changes went in before the 30-second delay ended, so the run will test the new flag.\n- **`--json` flag:** `python3 wordcount.py --json FILE` prints `{\"lines\":2,\"words\":3,\"chars\":6}`, compact like your example. I kept the hand-rolled argument parsing rather than switching to `argparse`, so a usage error still returns exit code 2 as the existing test expects. The usage message now reads `usage: python3 wordcount.py [--json] FILE`.\n- **Also changed:** I added a `test_main_json` test to `tests/test_basic.py`. Following CLAUDE.md's rule to keep docs in sync, I also added a short `--json` section to `README.md`.\n\nNo git, as you asked.\n\nFiles I changed:\n- /work/cases/story-r6-b/wordcount.py\n- /work/cases/story-r6-b/tests/test_basic.py\n- /work/cases/story-r6-b/README.md"}]}}
+{"type":"system","subtype":"stop_hook_summary","timestamp":"2026-10-18T11:19:45.342Z","uuid":"393e0e1f-f82d-49dd-8933-207d56fe4ee9","isSidechain":false,"cwd":"/work/cases/story-r6-b","preventedContinuation":false}
+{"type":"system","subtype":"turn_duration","timestamp":"2026-10-18T11:19:45.354Z","uuid":"ae3f9fbc-3f98-4efd-94de-0837c1bdc36b","isSidechain":false,"isMeta":false,"cwd":"/work/cases/story-r6-b","durationMs":51892}
+{"type":"user","timestamp":"2026-10-18T11:20:00.017Z","uuid":"1ac8117a-3d4c-4048-a376-bd3dcc6c6a78","promptId":"e9e6269c-1715-4e1c-b812-a20ce794cff1","isSidechain":false,"turnOrigin":"task_notification","promptSource":"system","cwd":"/work/cases/story-r6-b","message":{"role":"user","content":"<task-notification>\n<task-id>bbhgcbzl3</task-id>\n<tool-use-id>toolu_016aPdyE753x3GyDsNtsc4H9</tool-use-id>\n<output-file>/tmp/claude/-work-cases-story-r6-b/a1a47282-e3ca-45d0-ba2b-99c4ce453a4d/tasks/bbhgcbzl3.output</output-file>\n<status>completed</status>\n<summary>Background command \"Run full test suite after a 30s delay\" completed (exit code 0)</summary>\n</task-notification>"}}
+{"type":"assistant","timestamp":"2026-10-18T11:20:04.013Z","uuid":"64ab0350-8fdc-4bac-a458-d09c07a0239f","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01NXE1Afa632xMmYZ7e7aZeb","name":"Bash","input":{"command":"tail -5 /tmp/claude/-work-cases-story-r6-b/a1a47282-e3ca-45d0-ba2b-99c4ce453a4d/tasks/bbhgcbzl3.output","description":"Show the background test run result"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:20:04.107Z","uuid":"cadf647e-e52d-4c19-b352-a9715c4d6a02","promptId":"e9e6269c-1715-4e1c-b812-a20ce794cff1","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01NXE1Afa632xMmYZ7e7aZeb","content":".......................                                                  [100%]\n23 passed in 0.08s\n\n[exited with code 0]","is_error":false}]}}
+{"type":"attachment","timestamp":"2026-10-18T11:20:00.390Z","uuid":"0ac8e0e2-b1f1-42a8-807c-b8835207b28c","isSidechain":false,"cwd":"/work/cases/story-r6-b","attachment":{"type":"queued_command","prompt":"<task-notification>\n<summary>Stop hook feedback</summary>\n</task-notification>\n<system-reminder>\nStop hook blocking error from command \"PostToolUse:Bash\": Background command bbhgcbzl3 completed. Read /tmp/claude/-work-cases-story-r6-b/a1a47282-e3ca-45d0-ba2b-99c4ce453a4d/tasks/bbhgcbzl3.output and continue the task.\n\n</system-reminder>","source_uuid":"3ed5c235-3da1-4da8-89b6-062f2e0b43e6","commandMode":"task-notification","origin":{"kind":"task-notification"}}}
+{"type":"assistant","timestamp":"2026-10-18T11:20:06.937Z","uuid":"0eb21e36-811c-47f7-8b46-035dd7776a9f","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:20:06.947Z","uuid":"d5ef0cfb-ffc8-4a90-8ccd-7ce09165f667","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"text","text":"The background test run finished and all 23 tests passed, including the new `--json` test.\n\nThe CHANGELOG helper is still running; I'll report when it finishes."}]}}
+{"type":"system","subtype":"stop_hook_summary","timestamp":"2026-10-18T11:20:07.043Z","uuid":"364d709a-ab0f-4efb-83ff-6e9e27e1f655","isSidechain":false,"cwd":"/work/cases/story-r6-b","preventedContinuation":false}
+{"type":"system","subtype":"turn_duration","timestamp":"2026-10-18T11:20:07.050Z","uuid":"cad39494-8849-4b18-be1d-ee4453070d9d","isSidechain":false,"isMeta":false,"cwd":"/work/cases/story-r6-b","durationMs":7059}
+{"type":"user","timestamp":"2026-10-18T11:20:27.266Z","uuid":"e10e49dc-ad51-42e8-99ae-5d88a952239e","promptId":"92f3e88c-18ac-4cfb-b136-589a48a48593","isSidechain":false,"turnOrigin":"task_notification","promptSource":"system","cwd":"/work/cases/story-r6-b","message":{"role":"user","content":"<task-notification>\n<task-id>a67f92982e63a0df1</task-id>\n<tool-use-id>toolu_01SG8m1E8z8NrUjg7AUC82ci</tool-use-id>\n<output-file>/tmp/claude/-work-cases-story-r6-b/a1a47282-e3ca-45d0-ba2b-99c4ce453a4d/tasks/a67f92982e63a0df1.output</output-file>\n<status>completed</status>\n<summary>Agent \"Helper: write CHANGELOG.md slowly\" finished</summary>\n<note>A task-notification fires each time this agent stops with no live background children of its own. The user can send it another message and resume it, so the same task-id may notify more than once.</note>\n<result>/work/cases/story-r6-b/CHANGELOG.md</result>\n<usage><subagent_tokens>31377</subagent_tokens><tool_uses>4</tool_uses><duration_ms>59279</duration_ms></usage>\n</task-notification>"}}
+{"type":"assistant","timestamp":"2026-10-18T11:20:30.695Z","uuid":"0bcf8b74-88a0-4797-a471-3cf9115a347a","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01AnctcQKJxxPjMVQJbLcTQC","name":"Bash","input":{"command":"cat /work/cases/story-r6-b/CHANGELOG.md","description":"Show the CHANGELOG the helper wrote"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:20:30.808Z","uuid":"6d0186cd-c7c9-441d-bc0a-7610a61a26ee","promptId":"92f3e88c-18ac-4cfb-b136-589a48a48593","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01AnctcQKJxxPjMVQJbLcTQC","content":"# Changelog\n\n## 2026-10-18\n\n- Added `wordcount.py`: `python3 wordcount.py FILE` prints the line, word and character counts of FILE, and `count(text)` returns a `(lines, words, chars)` tuple.\n- Added a `--json` flag: `python3 wordcount.py --json FILE` prints the counts as `{\"lines\":..,\"words\":..,\"chars\":..}`.","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:20:35.154Z","uuid":"8bfb97c5-52e2-4241-9553-cf3d15f0eb22","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:20:35.160Z","uuid":"4a276386-3755-4ad4-a0af-ae3e4690fb25","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"text","text":"Everything you asked for this round is done. The CHANGELOG helper finished, and `CHANGELOG.md` has both entries: the original tool, and the `--json` flag it added in its last step. The background test run had already passed 23 of 23. The helper used four tools, one for each step you asked for, so it looks like it followed the sleep, write, sleep, edit sequence. I didn't watch each step happen.\n\n/work/cases/story-r6-b/CHANGELOG.md"}]}}
+{"type":"system","subtype":"stop_hook_summary","timestamp":"2026-10-18T11:20:35.310Z","uuid":"ee9c3718-34e1-4911-a911-33d2060b636f","isSidechain":false,"cwd":"/work/cases/story-r6-b","preventedContinuation":false}
+{"type":"system","subtype":"turn_duration","timestamp":"2026-10-18T11:20:35.319Z","uuid":"71c01c87-1e42-40f7-86d2-3f495988bcce","isSidechain":false,"isMeta":false,"cwd":"/work/cases/story-r6-b","durationMs":101860}
+{"type":"user","timestamp":"2026-10-18T11:23:36.853Z","uuid":"b8942d27-fc2d-425b-944c-a1e253320155","promptId":"aacb7196-0ee3-4d37-b059-29fb8127baeb","isSidechain":false,"turnOrigin":"human","promptSource":"typed","cwd":"/work/cases/story-r6-b","message":{"role":"user","content":"Small follow-up, no git: run python3 -m pytest -q once, then show the first 5 lines of CHANGELOG.md with head -5, then reply with one sentence."}}
+{"type":"assistant","timestamp":"2026-10-18T11:23:40.114Z","uuid":"c670c881-6e36-4596-9411-9ad359da9709","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_019sSf69K1kLtPULdjkNJCTb","name":"Bash","input":{"command":"python3 -m pytest -q 2>&1 | tail -3","description":"Run the test suite once"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:23:41.251Z","uuid":"e86b9538-a108-480d-8f28-41e27e108583","promptId":"aacb7196-0ee3-4d37-b059-29fb8127baeb","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_019sSf69K1kLtPULdjkNJCTb","content":".......................                                                  [100%]\n23 passed in 0.08s","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:23:44.494Z","uuid":"ab49ce7b-5e0b-48ad-b927-bcd7a9c53d30","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01TmTLWXKUz4EK4FAQPCz9jZ","name":"Bash","input":{"command":"head -5 /work/cases/story-r6-b/CHANGELOG.md","description":"Show the first 5 lines of the changelog"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:23:44.577Z","uuid":"8725acd6-a503-4646-b35e-4bfdca36230e","promptId":"aacb7196-0ee3-4d37-b059-29fb8127baeb","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01TmTLWXKUz4EK4FAQPCz9jZ","content":"# Changelog\n\n## 2026-10-18\n\n- Added `wordcount.py`: `python3 wordcount.py FILE` prints the line, word and character counts of FILE, and `count(text)` returns a `(lines, words, chars)` tuple.","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:23:49.198Z","uuid":"b72ba0b8-4448-47a6-9952-7d2836d79b25","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:23:49.220Z","uuid":"9f9446f5-b400-42b9-b192-9cabb0c72b6f","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"text","text":"All 23 tests passed, and the first five lines of `CHANGELOG.md` are the `# Changelog` title, the `## 2026-10-18` heading and the `wordcount.py` entry, with the `--json` entry on line 6, just past what `head -5` shows."}]}}
+{"type":"system","subtype":"stop_hook_summary","timestamp":"2026-10-18T11:23:49.363Z","uuid":"be56064a-ef9a-4280-a5aa-d13aa06d07ad","isSidechain":false,"cwd":"/work/cases/story-r6-b","preventedContinuation":false}
+{"type":"system","subtype":"turn_duration","timestamp":"2026-10-18T11:23:49.370Z","uuid":"f6b4654d-ec14-4b64-83fb-91c3e4f0d281","isSidechain":false,"isMeta":false,"cwd":"/work/cases/story-r6-b","durationMs":12532}
+{"type":"user","timestamp":"2026-10-18T11:26:30.363Z","uuid":"d7e2bc06-fd82-4c98-aa99-0fa129f57b3c","promptId":"744379e2-f96d-4021-8509-2d67f2190a0d","isSidechain":false,"turnOrigin":"human","promptSource":"typed","cwd":"/work/cases/story-r6-b","message":{"role":"user","content":"Reply with just the word OK, no tools."}}
+{"type":"assistant","timestamp":"2026-10-18T11:26:32.747Z","uuid":"0c2ea024-c0b4-42b7-8841-f28ea72e59e9","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"text","text":"OK"}]}}
+{"type":"system","subtype":"stop_hook_summary","timestamp":"2026-10-18T11:26:32.899Z","uuid":"59db4271-711a-44d1-81d7-a0af27a7cf40","isSidechain":false,"cwd":"/work/cases/story-r6-b","preventedContinuation":false}
+{"type":"system","subtype":"turn_duration","timestamp":"2026-10-18T11:26:32.910Z","uuid":"0d55ab93-e552-4878-80cd-959755dead90","isSidechain":false,"isMeta":false,"cwd":"/work/cases/story-r6-b","durationMs":2570}
+{"type":"user","timestamp":"2026-10-18T11:27:22.439Z","uuid":"f42ef188-0986-4266-98cf-94a912893718","promptId":"ad289124-2d61-47f6-91b1-decf611402da","isSidechain":false,"turnOrigin":"human","promptSource":"typed","cwd":"/work/cases/story-r6-b","message":{"role":"user","content":"Reply with just the word DONE, no tools."}}
+{"type":"assistant","timestamp":"2026-10-18T11:27:27.343Z","uuid":"893f098e-2dfa-4702-8dba-0b38fea48a83","isSidechain":false,"cwd":"/work/cases/story-r6-b","message":{"role":"assistant","content":[{"type":"text","text":"DONE"}]}}
+{"type":"system","subtype":"stop_hook_summary","timestamp":"2026-10-18T11:27:27.487Z","uuid":"16e21a97-3d9c-4d32-a641-934ceac2c901","isSidechain":false,"cwd":"/work/cases/story-r6-b","preventedContinuation":false}
+{"type":"system","subtype":"turn_duration","timestamp":"2026-10-18T11:27:27.493Z","uuid":"aff92711-de5c-4667-ae70-d0dbbfe28d8d","isSidechain":false,"isMeta":false,"cwd":"/work/cases/story-r6-b","durationMs":5073}
diff --git a/test/fixtures/story-corpus/errors-push-append.expected.json b/test/fixtures/story-corpus/errors-push-append.expected.json
new file mode 100644
index 00000000..00824f5f
--- /dev/null
+++ b/test/fixtures/story-corpus/errors-push-append.expected.json
@@ -0,0 +1,328 @@
+[
+  {
+    "prompt": "Build a tiny Python module calc_stats.py with mean(xs) and median(xs), strictly test-first: FIRST wr",
+    "origin": "human",
+    "complete": true,
+    "interrupted": false,
+    "durationMs": 130001,
+    "toolCalls": 12,
+    "filesChanged": 3,
+    "added": 81,
+    "removed": 0,
+    "helpers": 0,
+    "helpersRunning": 0,
+    "panels": [
+      {
+        "kind": "mission",
+        "ok": null,
+        "story": "You give Claude a job.",
+        "director": "Prompt · 55 words",
+        "balloon": "Build a tiny Python module calc_stats.py with mean(xs) and median(xs), strictly test-first: FIRST write tests/test_calc_stats.py that imports calc_stats, THEN run python3 -m pytest -q once while calc_stats.py does not exist yet (it must error at collection), THEN write calc_stats.py and run python3 -m pytest -q again until it passes. Install nothing, stay in this folder.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "montage",
+        "ok": null,
+        "story": "Claude gets started: runs 3 commands.",
+        "director": "Bash ×3",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 3
+      },
+      {
+        "kind": "backup",
+        "ok": null,
+        "story": "Claude asks the advisor for a second opinion.",
+        "director": "Advisor · a second opinion",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "run",
+        "ok": null,
+        "story": "Claude works in the terminal.",
+        "director": "Bash · mkdir -p /work/cases/story-r6-a/tests",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "fix",
+        "ok": null,
+        "story": "Claude writes 1 new file.",
+        "director": "Write · test_calc_stats.py +55",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "check",
+        "ok": false,
+        "story": "The tests don't even load.",
+        "director": "python3 -m pytest -q → error · 0 passed, 1 error",
+        "balloon": "Now the red run, once, with calc_stats.py confirmed absent:",
+        "tests": {
+          "passed": 0,
+          "failed": 0,
+          "errors": 1
+        },
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "save",
+        "ok": true,
+        "story": "Claude writes 1 file and saves the work: \"test: add failing tests for calc_stats mean/median\".",
+        "director": "git commit -q -F - · writes 1 file",
+        "balloon": "Red as expected: collection error, exit code 2.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "fix",
+        "ok": null,
+        "story": "Claude writes 1 new file.",
+        "director": "Write · calc_stats.py +24",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "check",
+        "ok": true,
+        "story": "The tests pass.",
+        "director": "python3 -m pytest -q → ok · 12 passed",
+        "balloon": "Green on the first implementation pass.",
+        "tests": {
+          "passed": 12,
+          "failed": 0
+        },
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "save",
+        "ok": true,
+        "story": "Claude saves the work: \"feat: implement calc_stats mean and median\".",
+        "director": "git commit -q -F -",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "backup",
+        "ok": null,
+        "story": "Claude asks the advisor for a second opinion.",
+        "director": "Advisor · a second opinion",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "complete",
+        "ok": null,
+        "story": "Done in 2 minutes.",
+        "director": "turn_duration · 2 min 10 s · 12 tool calls · 3 files changed",
+        "balloon": "I built it test-first: the suite failed at collection before calc_stats.py existed, then passed once the module was written.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 0
+      }
+    ]
+  },
+  {
+    "prompt": "Add mode(xs) to calc_stats.py (ValueError on empty input, ties return the smallest value) in two sep",
+    "origin": "human",
+    "complete": true,
+    "interrupted": false,
+    "durationMs": 36880,
+    "toolCalls": 8,
+    "filesChanged": 2,
+    "added": 40,
+    "removed": 1,
+    "helpers": 0,
+    "helpersRunning": 0,
+    "panels": [
+      {
+        "kind": "mission",
+        "ok": null,
+        "story": "You give Claude a job.",
+        "director": "Prompt · 95 words",
+        "balloon": "Add mode(xs) to calc_stats.py (ValueError on empty input, ties return the smallest value) in two separate steps without committing in between and without consulting the advisor: first add mode tests to tests/test_calc_stats.py and run python3 -m pytest -q (it should fail because mode is missing), then implement mode in calc_stats.py and run python3 -m pytest -q again until green; only then git co…",
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "loop",
+        "ok": true,
+        "story": "Fix and test: the first run fails, the second passes.",
+        "director": "2 checks · 3 edits · +40 −1 · last: ok",
+        "balloon": "Green: 18 passed and ruff is clean.",
+        "tests": {
+          "passed": 18,
+          "failed": 0
+        },
+        "roundsOk": [
+          false,
+          true
+        ],
+        "events": 5
+      },
+      {
+        "kind": "save",
+        "ok": true,
+        "story": "Claude saves the work and uploads it: \"feat: add calc_stats.mode with smallest-value tie-breaking\".",
+        "director": "git commit -q -F - · git push -u origin HEAD",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 2
+      },
+      {
+        "kind": "investigate",
+        "ok": null,
+        "story": "Claude looks around the project.",
+        "director": "Bash · git --git-dir=origin.git log --oneline master; git status -…",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "complete",
+        "ok": null,
+        "story": "Done in 37 seconds.",
+        "director": "turn_duration · 37 s · 8 tool calls · 2 files changed",
+        "balloon": "mode(xs) is in calc_stats.py, committed once after the tests went green, and pushed.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 0
+      }
+    ]
+  },
+  {
+    "prompt": "In ONE Bash command, append exactly two lines to NOTES.md with cat >> NOTES.md <<'EOF' (two short li",
+    "origin": "human",
+    "complete": true,
+    "interrupted": false,
+    "durationMs": 26891,
+    "toolCalls": 5,
+    "filesChanged": 1,
+    "added": 2,
+    "removed": 0,
+    "helpers": 0,
+    "helpersRunning": 0,
+    "panels": [
+      {
+        "kind": "mission",
+        "ok": null,
+        "story": "You give Claude a job.",
+        "director": "Prompt · 66 words",
+        "balloon": "In ONE Bash command, append exactly two lines to NOTES.md with cat >> NOTES.md <<'EOF' (two short lines about mode) EOF and then cat calc_stats.py; next run python3 -m pytest -q; then git add NOTES.md and commit it, and push with exactly this command, run as written with nothing appended: git push && git describe --tags (it is expected to fail after pushing; just report it).",
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "fix",
+        "ok": null,
+        "story": "Claude writes 1 file.",
+        "director": "Bash · NOTES.md +2",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "check",
+        "ok": true,
+        "story": "The tests pass.",
+        "director": "python3 -m pytest -q → ok · 18 passed",
+        "balloon": null,
+        "tests": {
+          "passed": 18,
+          "failed": 0
+        },
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "save",
+        "ok": true,
+        "story": "Claude saves the work and uploads it, but a step after that fails.",
+        "director": "git commit -q -F - · git push · 1 error",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 2
+      },
+      {
+        "kind": "investigate",
+        "ok": null,
+        "story": "Claude looks around the project.",
+        "director": "Bash · git --git-dir=origin.git log --oneline -1 master; git statu…",
+        "balloon": null,
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "complete",
+        "ok": null,
+        "story": "Done in 27 seconds.",
+        "director": "turn_duration · 27 s · 5 tool calls · 1 file changed",
+        "balloon": "NOTES.md has the two lines and is committed and pushed.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 0
+      }
+    ]
+  },
+  {
+    "prompt": "Reply with just the word ok, use no tools.",
+    "origin": "human",
+    "complete": true,
+    "interrupted": false,
+    "durationMs": 3206,
+    "toolCalls": 0,
+    "filesChanged": 0,
+    "added": 0,
+    "removed": 0,
+    "helpers": 0,
+    "helpersRunning": 0,
+    "panels": [
+      {
+        "kind": "mission",
+        "ok": null,
+        "story": "You give Claude a job.",
+        "director": "Prompt · 9 words",
+        "balloon": "Reply with just the word ok, use no tools.",
+        "tests": null,
+        "roundsOk": null,
+        "events": 1
+      },
+      {
+        "kind": "complete",
+        "ok": null,
+        "story": "Done in 3 seconds.",
+        "director": "turn_duration · 3 s · 0 tool calls",
+        "balloon": "ok",
+        "tests": null,
+        "roundsOk": null,
+        "events": 0
+      }
+    ]
+  }
+]
diff --git a/test/fixtures/story-corpus/errors-push-append.jsonl b/test/fixtures/story-corpus/errors-push-append.jsonl
new file mode 100644
index 00000000..b1c2d1e2
--- /dev/null
+++ b/test/fixtures/story-corpus/errors-push-append.jsonl
@@ -0,0 +1,81 @@
+{"type":"user","timestamp":"2026-10-18T11:15:29.085Z","uuid":"bb508672-8f0c-401d-861f-4e912f79fe82","promptId":"10f3e6af-05b7-465f-85da-09372e8ad233","isSidechain":false,"turnOrigin":"human","promptSource":"typed","cwd":"/work/cases/story-r6-a","message":{"role":"user","content":"Build a tiny Python module calc_stats.py with mean(xs) and median(xs), strictly test-first: FIRST write tests/test_calc_stats.py that imports calc_stats, THEN run python3 -m pytest -q once while calc_stats.py does not exist yet (it must error at collection), THEN write calc_stats.py and run python3 -m pytest -q again until it passes. Install nothing, stay in this folder."}}
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+{"type":"assistant","timestamp":"2026-10-18T11:16:37.430Z","uuid":"e7011779-7aae-45b3-afaa-38db8729b0b1","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_012ntCjdYShBmh4Z7sudpbem","name":"Write","input":{"file_path":"/work/cases/story-r6-a/tests/test_calc_stats.py","content":"(in the result)"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:16:38.078Z","uuid":"a755296c-2429-475a-a6c1-9a6a0985bf9b","promptId":"10f3e6af-05b7-465f-85da-09372e8ad233","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_012ntCjdYShBmh4Z7sudpbem","content":"File created successfully at: /work/cases/story-r6-a/tests/test_calc_stats.py (file state is current in your context — no need to Read it back)","is_error":false}]},"toolUseResult":{"type":"create","filePath":"/work/cases/story-r6-a/tests/test_calc_stats.py","content":"import pytest\n\nimport calc_stats\n\n\ndef test_mean_of_ints():\n    assert calc_stats.mean([1, 2, 3, 4]) == 2.5\n\n\ndef test_mean_of_floats():\n    assert calc_stats.mean([0.1, 0.2, 0.3]) == pytest.approx(0.2)\n\n\ndef test_mean_of_single_element():\n    assert calc_stats.mean([7]) == 7\n\n\ndef test_mean_accepts_any_iterable():\n    assert calc_stats.mean(x for x in [2, 4, 6]) == 4\n\n\ndef test_mean_of_empty_raises():\n    with pytest.raises(ValueError):\n        calc_stats.mean([])\n\n\ndef test_median_odd_length():\n    assert calc_stats.median([1, 2, 3]) == 2\n\n\ndef test_median_even_length_averages_middle_pair():\n    assert calc_stats.median([1, 2, 3, 4]) == 2.5\n\n\ndef test_median_of_unsorted_input():\n    assert calc_stats.median([5, 1, 4, 2, 3]) == 3\n\n\ndef test_median_of_single_element():\n    assert calc_stats.median([7]) == 7\n\n\ndef test_median_does_not_mutate_input():\n    xs = [3, 1, 2]\n    calc_stats.median(xs)\n    assert xs == [3, 1, 2]\n\n\ndef test_median_accepts_any_iterable():\n    assert calc_stats.median(x for x in [3, 1, 2]) == 2\n\n\ndef test_median_of_empty_raises():\n    with pytest.raises(ValueError):\n        calc_stats.median([])\n","structuredPatch":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:41.236Z","uuid":"e594c138-075e-419b-864d-60e6d883f818","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"text","text":"Now the red run, once, with `calc_stats.py` confirmed absent:"}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:42.451Z","uuid":"ad95a93b-9d59-4ea1-b851-4e3788815090","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01E7L8kV8ButUSk5vPwgHqfg","name":"Bash","input":{"command":"ls calc_stats.py 2>&1; python3 -m pytest -q; echo \"exit=$?\"","description":"Run pytest before calc_stats.py exists (expected collection error)"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:16:43.865Z","uuid":"c7b55d26-9796-4a63-ba44-cfb9d2582266","promptId":"10f3e6af-05b7-465f-85da-09372e8ad233","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01E7L8kV8ButUSk5vPwgHqfg","content":"ls: cannot access 'calc_stats.py': No such file or directory\n\n==================================== ERRORS ====================================\n__________________ ERROR collecting tests/test_calc_stats.py ___________________\nImportError while importing test module '/work/cases/story-r6-a/tests/test_calc_stats.py'.\nHint: make sure your test modules/packages have valid Python names.\nTraceback:\n/usr/lib/python3.12/importlib/__init__.py:90: in import_module\n    return _bootstrap._gcd_import(name[level:], package, level)\n           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\ntests/test_calc_stats.py:3: in <module>\n    import calc_stats\nE   ModuleNotFoundError: No module named 'calc_stats'\n=========================== short test summary info ============================\nERROR tests/test_calc_stats.py\n!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!\n1 error in 0.41s\nexit=2","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:46.454Z","uuid":"e6a64cfa-ff65-4ae2-a023-32a65d1c91f0","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"text","text":"Red as expected: collection error, exit code 2. Committing the failing tests plus a `.gitignore` for the cache dirs:"}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:48.908Z","uuid":"b6f36b3d-cb9b-4301-83d8-343792314625","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_0144FqDCMf5VM36tTXa8xcys","name":"Bash","input":{"command":"printf '__pycache__/\\n.pytest_cache/\\n' > .gitignore && git add .gitignore tests/test_calc_stats.py && git commit -q -F - <<'EOF'\ntest: add failing tests for calc_stats mean/median\n\nTest-first: tests import calc_stats, which does not exist yet, so\ncollection fails. Covers ints/floats, single element, generators,\nempty input raising ValueError, even/odd/unsorted median, and that\nmedian does not mutate its input.\n\nCo-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>\nEOF\ngit log --oneline; git status --short","description":"Commit failing tests and gitignore"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:16:49.322Z","uuid":"ea39cac4-a39a-4c04-8354-a1a2dad79efb","promptId":"10f3e6af-05b7-465f-85da-09372e8ad233","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_0144FqDCMf5VM36tTXa8xcys","content":"e52a79d test: add failing tests for calc_stats mean/median\n?? .claude/\n?? .codeman-agent-case.json\n?? CLAUDE.md\n?? origin.git/","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:16:57.556Z","uuid":"abb49a69-bdc3-459d-97fc-15a12b4d27da","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01NwAgYXJsQtZvze5EAQtevM","name":"Write","input":{"file_path":"/work/cases/story-r6-a/calc_stats.py","content":"(in the result)"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:16:57.983Z","uuid":"cace91f3-3ef5-4738-b2d7-b5fc9d71e3f0","promptId":"10f3e6af-05b7-465f-85da-09372e8ad233","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01NwAgYXJsQtZvze5EAQtevM","content":"File created successfully at: /work/cases/story-r6-a/calc_stats.py (file state is current in your context — no need to Read it back)","is_error":false}]},"toolUseResult":{"type":"create","filePath":"/work/cases/story-r6-a/calc_stats.py","content":"\"\"\"Tiny descriptive statistics: mean and median.\"\"\"\n\n\ndef mean(xs):\n    \"\"\"Return the arithmetic mean of xs. Raises ValueError if xs is empty.\"\"\"\n    xs = list(xs)\n    if not xs:\n        raise ValueError(\"mean() requires at least one value\")\n    return sum(xs) / len(xs)\n\n\ndef median(xs):\n    \"\"\"Return the median of xs, averaging the middle pair for even lengths.\n\n    Raises ValueError if xs is empty. The input is not modified.\n    \"\"\"\n    s = sorted(xs)\n    n = len(s)\n    if not n:\n        raise ValueError(\"median() requires at least one value\")\n    mid = n // 2\n    if n % 2:\n        return s[mid]\n    return (s[mid - 1] + s[mid]) / 2\n","structuredPatch":[]}}
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+{"type":"user","timestamp":"2026-10-18T11:17:00.285Z","uuid":"f42a2a22-fd8e-4ba1-a114-1104e7739604","promptId":"10f3e6af-05b7-465f-85da-09372e8ad233","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01QSPa9DC8QaBXjv7mmYqDeW","content":"............                                                             [100%]\n12 passed in 0.08s\nexit=0\nAll checks passed!\nruff_exit=0","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:17:02.828Z","uuid":"7a959c05-31a7-4434-b643-4f1dd867e08f","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:17:02.836Z","uuid":"16fcf060-4302-4aa0-b4da-eaa0f9e841d0","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"text","text":"Green on the first implementation pass. Committing:"}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:17:04.970Z","uuid":"f2a3cbb7-d60c-4be8-a794-cfaab67b5766","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01LZAirS6JFxuUNirS3mAnr7","name":"Bash","input":{"command":"git add calc_stats.py && git commit -q -F - <<'EOF'\nfeat: implement calc_stats mean and median\n\nPlain-stdlib implementations that make the test suite pass. Both\naccept any iterable and raise ValueError on empty input; median sorts\na copy so the caller's list is left untouched.\n\nCo-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>\nEOF\ngit log --oneline; git status --short","description":"Commit calc_stats implementation"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:17:05.180Z","uuid":"2df2359b-5cb5-4e86-b47d-14d3feab9f6d","promptId":"10f3e6af-05b7-465f-85da-09372e8ad233","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01LZAirS6JFxuUNirS3mAnr7","content":"33af901 feat: implement calc_stats mean and median\ne52a79d test: add failing tests for calc_stats mean/median\n?? .claude/\n?? .codeman-agent-case.json\n?? CLAUDE.md\n?? origin.git/","is_error":false}]}}
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+{"type":"assistant","timestamp":"2026-10-18T11:17:38.891Z","uuid":"8fcad402-e1f2-4874-84f9-a4ab2a5ea856","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"text","text":"I built it test-first: the suite failed at collection before `calc_stats.py` existed, then passed once the module was written.\n\n**1. Tests written first.** `tests/test_calc_stats.py` has 12 tests, with `import calc_stats` at the top of the file. They cover mean of ints, floats, a single value and a generator; median of odd, even and unsorted lists; that median leaves the input list unchanged; and that both functions raise `ValueError` on an empty list.\n\n**2. Red run (one run, with `calc_stats.py` confirmed absent):**\n```\n__________________ ERROR collecting tests/test_calc_stats.py ___________________\ntests/test_calc_stats.py:3: in <module>\n    import calc_stats\nE   ModuleNotFoundError: No module named 'calc_stats'\n!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!\n1 error in 0.41s\nexit=2\n```\n\n**3. Implementation, then green run:**\n```\n............                                                             [100%]\n12 passed in 0.08s\n```\nIt passed on the first run after writing the module. The linter (`ruff check`, already installed) reports no issues.\n\n**Commits** (on `master`):\n- `e52a79d` test: add failing tests for calc_stats mean/median (this also adds a `.gitignore` for `__pycache__/` and `.pytest_cache/`)\n- `33af901` feat: implement calc_stats mean and median\n\n**Files created:**\n- /work/cases/story-r6-a/tests/test_calc_stats.py\n- /work/cases/story-r6-a/calc_stats.py\n- /work/cases/story-r6-a/.gitignore\n\n**Choices I made:**\n- `calc_stats.py` is in the project root, not the empty `src/` folder. `python3 -m pytest` puts the current folder on Python's import path, so the test finds the module there without any extra setup.\n- I didn't push, didn't touch `origin.git/` and didn't create a README, since none existed to keep in sync."}]}}
+{"type":"system","subtype":"stop_hook_summary","timestamp":"2026-10-18T11:17:39.070Z","uuid":"382f19e3-95e6-4230-8297-b4c7eb84b052","isSidechain":false,"cwd":"/work/cases/story-r6-a","preventedContinuation":false}
+{"type":"system","subtype":"turn_duration","timestamp":"2026-10-18T11:17:39.086Z","uuid":"da4a3bf9-b35c-4367-88c9-f417ef918a40","isSidechain":false,"isMeta":false,"cwd":"/work/cases/story-r6-a","durationMs":130043}
+{"type":"user","timestamp":"2026-10-18T11:18:54.112Z","uuid":"abc151f2-0572-4c0c-a412-e14f261c859f","promptId":"d10c1f74-3db8-4940-9cbf-fb14a1bc29ce","isSidechain":false,"turnOrigin":"human","promptSource":"typed","cwd":"/work/cases/story-r6-a","message":{"role":"user","content":"Add mode(xs) to calc_stats.py (ValueError on empty input, ties return the smallest value) in two separate steps without committing in between and without consulting the advisor: first add mode tests to tests/test_calc_stats.py and run python3 -m pytest -q (it should fail because mode is missing), then implement mode in calc_stats.py and run python3 -m pytest -q again until green; only then git commit with a clear message and push with exactly this command: git push -u origin HEAD && git describe --tags (describe may fail, that is fine, just report it). No gh, no network."}}
+{"type":"assistant","timestamp":"2026-10-18T11:18:58.074Z","uuid":"fa000959-a500-45b1-9b91-68da5fcfcdad","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:01.128Z","uuid":"9c61743d-49e8-429e-b3a9-91c301ef8417","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01VT66kfvGjJptZp86x5QEHA","name":"Edit","input":{"replace_all":false,"file_path":"/work/cases/story-r6-a/tests/test_calc_stats.py","old_string":"def test_median_of_empty_raises():\n    with pytest.raises(ValueError):\n        calc_stats.median([])\n","new_string":"def test_median_of_empty_raises():\n    with pytest.raises(ValueError):\n        calc_stats.median([])\n\n\ndef test_mode_returns_most_common_value():\n    assert calc_stats.mode([1, 2, 2, 3]) == 2\n\n\ndef test_mode_tie_returns_smallest_value():\n    assert calc_stats.mode([3, 3, 1, 1, 2]) == 1\n\n\ndef test_mode_all_unique_returns_smallest_value():\n    assert calc_stats.mode([5, 4, 6]) == 4\n\n\ndef test_mode_of_single_element():\n    assert calc_stats.mode([7]) == 7\n\n\ndef test_mode_accepts_any_iterable():\n    assert calc_stats.mode(x for x in [4, 1, 4]) == 4\n\n\ndef test_mode_of_empty_raises():\n    with pytest.raises(ValueError):\n        calc_stats.mode([])\n"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:19:01.240Z","uuid":"15167971-a66c-47d5-93a5-d4357bffa364","promptId":"d10c1f74-3db8-4940-9cbf-fb14a1bc29ce","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01VT66kfvGjJptZp86x5QEHA","content":"The file /work/cases/story-r6-a/tests/test_calc_stats.py has been updated successfully. (file state is current in your context — no need to Read it back)","is_error":false}]},"toolUseResult":{"filePath":"/work/cases/story-r6-a/tests/test_calc_stats.py","structuredPatch":[{"oldStart":53,"oldLines":3,"newStart":53,"newLines":28,"lines":[" def test_median_of_empty_raises():","     with pytest.raises(ValueError):","         calc_stats.median([])","+","+","+def test_mode_returns_most_common_value():","+    assert calc_stats.mode([1, 2, 2, 3]) == 2","+","+","+def test_mode_tie_returns_smallest_value():","+    assert calc_stats.mode([3, 3, 1, 1, 2]) == 1","+","+","+def test_mode_all_unique_returns_smallest_value():","+    assert calc_stats.mode([5, 4, 6]) == 4","+","+","+def test_mode_of_single_element():","+    assert calc_stats.mode([7]) == 7","+","+","+def test_mode_accepts_any_iterable():","+    assert calc_stats.mode(x for x in [4, 1, 4]) == 4","+","+","+def test_mode_of_empty_raises():","+    with pytest.raises(ValueError):","+        calc_stats.mode([])"]}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:02.214Z","uuid":"52512990-2236-489a-b1a7-e9d7fead32bf","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01NYR735azo5vbJQw4RkWLG2","name":"Bash","input":{"command":"python3 -m pytest -q; echo \"exit=$?\"","description":"Run tests before mode is implemented (expected failures)"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:19:03.495Z","uuid":"54b061eb-eb98-4d99-8631-cfec319fe886","promptId":"d10c1f74-3db8-4940-9cbf-fb14a1bc29ce","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01NYR735azo5vbJQw4RkWLG2","content":"............FFFFFF                                                       [100%]\n=================================== FAILURES ===================================\n_____________________ test_mode_returns_most_common_value ______________________\n\n    def test_mode_returns_most_common_value():\n>       assert calc_stats.mode([1, 2, 2, 3]) == 2\n               ^^^^^^^^^^^^^^^\nE       AttributeError: module 'calc_stats' has no attribute 'mode'\n\ntests/test_calc_stats.py:59: AttributeError\n_____________________ test_mode_tie_returns_smallest_value _____________________\n\n    def test_mode_tie_returns_smallest_value():\n>       assert calc_stats.mode([3, 3, 1, 1, 2]) == 1\n               ^^^^^^^^^^^^^^^\nE       AttributeError: module 'calc_stats' has no attribute 'mode'\n\ntests/test_calc_stats.py:63: AttributeError\n_________________ test_mode_all_unique_returns_smallest_value __________________\n\n    def test_mode_all_unique_returns_smallest_value():\n>       assert calc_stats.mode([5, 4, 6]) == 4\n               ^^^^^^^^^^^^^^^\nE       AttributeError: module 'calc_stats' has no attribute 'mode'\n\ntests/test_calc_stats.py:67: AttributeError\n_________________________ test_mode_of_single_element __________________________\n\n    def test_mode_of_single_element():\n>       assert calc_stats.mode([7]) == 7\n               ^^^^^^^^^^^^^^^\nE       AttributeError: module 'calc_stats' has no attribute 'mode'\n\ntests/test_calc_stats.py:71: AttributeError\n________________________ test_mode_accepts_any_iterable ________________________\n\n    def test_mode_accepts_any_iterable():\n>       assert calc_stats.mode(x for x in [4, 1, 4]) == 4\n               ^^^^^^^^^^^^^^^\nE       AttributeError: module 'calc_stats' has no attribute 'mode'\n\ntests/test_calc_stats.py:75: AttributeError\n__________________________ test_mode_of_empty_raises ___________________________\n\n    def test_mode_of_empty_raises():\n        with pytest.raises(ValueError):\n>           calc_stats.mode([])\n            ^^^^^^^^^^^^^^^\nE           AttributeError: module 'calc_stats' has no attribute 'mode'\n\ntests/test_calc_stats.py:80: AttributeError\n=========================== short test summary info ============================\nFAILED tests/test_calc_stats.py::test_mode_returns_most_common_value - Attrib...\nFAILED tests/test_calc_stats.py::test_mode_tie_returns_smallest_value - Attri...\nFAILED tests/test_calc_stats.py::test_mode_all_unique_returns_smallest_value\nFAILED tests/test_calc_stats.py::test_mode_of_single_element - AttributeError...\nFAILED tests/test_calc_stats.py::test_mode_accepts_any_iterable - AttributeEr...\nFAILED tests/test_calc_stats.py::test_mode_of_empty_raises - AttributeError: ...\n6 failed, 12 passed in 0.21s\nexit=1","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:06.675Z","uuid":"f611de65-b149-43f2-983a-c1c5f4ccb7ac","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:06.681Z","uuid":"9aa0bce3-6cee-41b7-9fd2-8d45b0b8249b","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"text","text":"Red as expected: the 6 new tests fail with `AttributeError: module 'calc_stats' has no attribute 'mode'`, and the 12 existing tests still pass. Now the implementation:"}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:08.326Z","uuid":"bd6765d8-4829-40ff-9437-714dd6025a82","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01WRruxpSwRJw5cY2hrbL6Sy","name":"Edit","input":{"replace_all":false,"file_path":"/work/cases/story-r6-a/calc_stats.py","old_string":"\"\"\"Tiny descriptive statistics: mean and median.\"\"\"\n","new_string":"\"\"\"Tiny descriptive statistics: mean, median and mode.\"\"\"\n\nfrom collections import Counter\n"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:19:08.414Z","uuid":"e7aab455-38bf-461d-9847-6aac8d645834","promptId":"d10c1f74-3db8-4940-9cbf-fb14a1bc29ce","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01WRruxpSwRJw5cY2hrbL6Sy","content":"The file /work/cases/story-r6-a/calc_stats.py has been updated successfully. (file state is current in your context — no need to Read it back)","is_error":false}]},"toolUseResult":{"filePath":"/work/cases/story-r6-a/calc_stats.py","structuredPatch":[{"oldStart":1,"oldLines":6,"newStart":1,"newLines":8,"lines":["-\"\"\"Tiny descriptive statistics: mean and median.\"\"\"","+\"\"\"Tiny descriptive statistics: mean, median and mode.\"\"\""," ","+from collections import Counter"," ","+"," def mean(xs):","     \"\"\"Return the arithmetic mean of xs. Raises ValueError if xs is empty.\"\"\"","     xs = list(xs)"]}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:10.272Z","uuid":"70e51aea-ba8a-4a58-906d-ab0c005656df","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_012mLEuB1sJzoUZY6LapkVXk","name":"Edit","input":{"replace_all":false,"file_path":"/work/cases/story-r6-a/calc_stats.py","old_string":"    if n % 2:\n        return s[mid]\n    return (s[mid - 1] + s[mid]) / 2\n","new_string":"    if n % 2:\n        return s[mid]\n    return (s[mid - 1] + s[mid]) / 2\n\n\ndef mode(xs):\n    \"\"\"Return the most common value in xs; ties go to the smallest value.\n\n    Raises ValueError if xs is empty.\n    \"\"\"\n    counts = Counter(xs)\n    if not counts:\n        raise ValueError(\"mode() requires at least one value\")\n    top = max(counts.values())\n    return min(x for x, c in counts.items() if c == top)\n"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:19:10.361Z","uuid":"d7c9b9e3-5513-4b06-88b3-a770a42d619e","promptId":"d10c1f74-3db8-4940-9cbf-fb14a1bc29ce","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_012mLEuB1sJzoUZY6LapkVXk","content":"The file /work/cases/story-r6-a/calc_stats.py has been updated successfully. (file state is current in your context — no need to Read it back)","is_error":false}]},"toolUseResult":{"filePath":"/work/cases/story-r6-a/calc_stats.py","structuredPatch":[{"oldStart":24,"oldLines":3,"newStart":24,"newLines":15,"lines":["     if n % 2:","         return s[mid]","     return (s[mid - 1] + s[mid]) / 2","+","+","+def mode(xs):","+    \"\"\"Return the most common value in xs; ties go to the smallest value.","+","+    Raises ValueError if xs is empty.","+    \"\"\"","+    counts = Counter(xs)","+    if not counts:","+        raise ValueError(\"mode() requires at least one value\")","+    top = max(counts.values())","+    return min(x for x, c in counts.items() if c == top)"]}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:11.607Z","uuid":"8208632e-7603-4695-acc1-e28800f18b2d","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01H2CRx7E2wVfAUa2Je5qnAD","name":"Bash","input":{"command":"python3 -m pytest -q; echo \"exit=$?\"; ruff check calc_stats.py tests/; echo \"ruff_exit=$?\"; git status --short","description":"Run tests and lint after implementing mode"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:19:12.743Z","uuid":"a4f3d5fd-3d0e-434c-988b-9960f4df816b","promptId":"d10c1f74-3db8-4940-9cbf-fb14a1bc29ce","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01H2CRx7E2wVfAUa2Je5qnAD","content":"..................                                                       [100%]\n18 passed in 0.05s\nexit=0\nAll checks passed!\nruff_exit=0\n M calc_stats.py\n M tests/test_calc_stats.py\n?? .claude/\n?? .codeman-agent-case.json\n?? CLAUDE.md\n?? origin.git/","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:15.100Z","uuid":"da6b9140-4f92-4b33-89be-5b4a3487c2e8","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"text","text":"Green: 18 passed and ruff is clean. Now the single commit, followed by the exact push command:"}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:17.881Z","uuid":"38d8efa1-1351-46f4-9bfa-8a95a6ac3bc6","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01BqgDpwkGCb7ZYjQcteu1bo","name":"Bash","input":{"command":"git add calc_stats.py tests/test_calc_stats.py && git commit -q -F - <<'EOF'\nfeat: add calc_stats.mode with smallest-value tie-breaking\n\nmode(xs) returns the most common value; when several values share the\ntop count it returns the smallest, so the result is deterministic.\nEmpty input raises ValueError, matching mean and median. Tests were\nwritten first and failed on the missing attribute before implementing.\n\nCo-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>\nEOF\ngit log --oneline","description":"Commit mode tests and implementation together"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:19:18.036Z","uuid":"d5686416-d7b5-4350-a9bd-9ba8b9cf4e51","promptId":"d10c1f74-3db8-4940-9cbf-fb14a1bc29ce","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01BqgDpwkGCb7ZYjQcteu1bo","content":"f80bb31 feat: add calc_stats.mode with smallest-value tie-breaking\n33af901 feat: implement calc_stats mean and median\ne52a79d test: add failing tests for calc_stats mean/median","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:18.879Z","uuid":"0e88d63c-396c-4f81-a533-f1fd55ae04b7","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_013TejrLrM79QWAhtyRtDkyb","name":"Bash","input":{"command":"git push -u origin HEAD && git describe --tags; echo \"exit=$?\"","description":"Push to the local origin repo, then describe tags"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:19:19.063Z","uuid":"433f678e-fcc5-4ae0-ac6f-e9e60e23e72f","promptId":"d10c1f74-3db8-4940-9cbf-fb14a1bc29ce","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_013TejrLrM79QWAhtyRtDkyb","content":"To ./origin.git\n * [new branch]      HEAD -> master\nbranch 'master' set up to track 'origin/master'.\nfatal: No names found, cannot describe anything.\nexit=128","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:21.525Z","uuid":"8cbb7401-15db-44cf-9d6d-d456c0e6cbef","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:22.706Z","uuid":"f16b7f71-5755-4d33-9e8d-eff1a21caec5","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_018vgKC93JRXWqnJyiDrpNu2","name":"Bash","input":{"command":"git --git-dir=origin.git log --oneline master; git status -sb | head -1","description":"Confirm origin has the pushed commits"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:19:22.811Z","uuid":"711b249f-fc70-434b-b3b6-609f35677947","promptId":"d10c1f74-3db8-4940-9cbf-fb14a1bc29ce","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_018vgKC93JRXWqnJyiDrpNu2","content":"f80bb31 feat: add calc_stats.mode with smallest-value tie-breaking\n33af901 feat: implement calc_stats mean and median\ne52a79d test: add failing tests for calc_stats mean/median\n## master...origin/master","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:19:30.875Z","uuid":"d820607a-e023-4565-b761-12bf961feab5","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"text","text":"`mode(xs)` is in `calc_stats.py`, committed once after the tests went green, and pushed. `git describe --tags` failed because the repo has no tags. I didn't use the advisor, `gh` or the network.\n\n**1. Tests first.** I added 6 mode tests to `tests/test_calc_stats.py`: the most common value, a tie returning the smallest value, all values unique, a single element, a generator as input, and an empty list raising `ValueError`. Run before implementing:\n```\nE       AttributeError: module 'calc_stats' has no attribute 'mode'\n6 failed, 12 passed in 0.21s\nexit=1\n```\n\n**2. Implementation.** `mode` counts each value with `collections.Counter`, finds the highest count, and returns the smallest value with that count. An empty input raises `ValueError`, the same as `mean` and `median`. Rerun:\n```\n18 passed in 0.05s\n```\n`ruff check` reports no issues. It passed on the first run, so no fixes were needed.\n\n**3. Commit and push.** The only commit is `f80bb31 feat: add calc_stats.mode with smallest-value tie-breaking`, which holds both the tests and the implementation. Output of `git push -u origin HEAD && git describe --tags`:\n```\nTo ./origin.git\n * [new branch]      HEAD -> master\nbranch 'master' set up to track 'origin/master'.\nfatal: No names found, cannot describe anything.\nexit=128\n```\nThe push worked. `origin` is the local `./origin.git` folder, and it now has all three commits; local `master` tracks `origin/master` with nothing left to push.\n\nFiles changed:\n- /work/cases/story-r6-a/calc_stats.py\n- /work/cases/story-r6-a/tests/test_calc_stats.py"}]}}
+{"type":"system","subtype":"stop_hook_summary","timestamp":"2026-10-18T11:19:30.980Z","uuid":"a9ec39fc-d215-43d2-90b3-1a1709a1347e","isSidechain":false,"cwd":"/work/cases/story-r6-a","preventedContinuation":false}
+{"type":"system","subtype":"turn_duration","timestamp":"2026-10-18T11:19:30.992Z","uuid":"dca28631-cff6-411a-897a-86b1723fc3bb","isSidechain":false,"isMeta":false,"cwd":"/work/cases/story-r6-a","durationMs":36943}
+{"type":"user","timestamp":"2026-10-18T11:22:08.814Z","uuid":"2568f2b5-a6ed-461b-a135-138b30669246","promptId":"00fa3fa9-8f11-4b22-85ed-3a7860351e84","isSidechain":false,"turnOrigin":"human","promptSource":"typed","cwd":"/work/cases/story-r6-a","message":{"role":"user","content":"In ONE Bash command, append exactly two lines to NOTES.md with cat >> NOTES.md <<'EOF' (two short lines about mode) EOF and then cat calc_stats.py; next run python3 -m pytest -q; then git add NOTES.md and commit it, and push with exactly this command, run as written with nothing appended: git push && git describe --tags (it is expected to fail after pushing; just report it)."}}
+{"type":"assistant","timestamp":"2026-10-18T11:22:12.503Z","uuid":"03042821-5877-406f-90a6-cea132555c1e","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:22:13.788Z","uuid":"2bd04868-7fdd-4e5a-ac1f-1c6a96b7b298","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01ETSRGUWkap1RPHhH3GEfnf","name":"Bash","input":{"command":"cat >> NOTES.md <<'EOF'\nmode(xs) returns the most common value; ties go to the smallest value.\nmode([]) raises ValueError, matching mean and median.\nEOF\ncat calc_stats.py","description":"Append two mode notes to NOTES.md and show calc_stats.py"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:22:14.006Z","uuid":"5e5f6044-fd77-4d0a-9844-6b35b7c5b114","promptId":"00fa3fa9-8f11-4b22-85ed-3a7860351e84","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01ETSRGUWkap1RPHhH3GEfnf","content":"\"\"\"Tiny descriptive statistics: mean, median and mode.\"\"\"\n\nfrom collections import Counter\n\n\ndef mean(xs):\n    \"\"\"Return the arithmetic mean of xs. Raises ValueError if xs is empty.\"\"\"\n    xs = list(xs)\n    if not xs:\n        raise ValueError(\"mean() requires at least one value\")\n    return sum(xs) / len(xs)\n\n\ndef median(xs):\n    \"\"\"Return the median of xs, averaging the middle pair for even lengths.\n\n    Raises ValueError if xs is empty. The input is not modified.\n    \"\"\"\n    s = sorted(xs)\n    n = len(s)\n    if not n:\n        raise ValueError(\"median() requires at least one value\")\n    mid = n // 2\n    if n % 2:\n        return s[mid]\n    return (s[mid - 1] + s[mid]) / 2\n\n\ndef mode(xs):\n    \"\"\"Return the most common value in xs; ties go to the smallest value.\n\n    Raises ValueError if xs is empty.\n    \"\"\"\n    counts = Counter(xs)\n    if not counts:\n        raise ValueError(\"mode() requires at least one value\")\n    top = max(counts.values())\n    return min(x for x, c in counts.items() if c == top)","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:22:14.721Z","uuid":"6034759c-93fd-44b0-a188-effd0c78e3b5","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01Twfh1GfV4jbK5q4Wh4TpXi","name":"Bash","input":{"command":"python3 -m pytest -q","description":"Run the test suite"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:22:15.693Z","uuid":"1bdd55f0-fa0b-44b8-b08f-1da1c761325c","promptId":"00fa3fa9-8f11-4b22-85ed-3a7860351e84","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01Twfh1GfV4jbK5q4Wh4TpXi","content":"..................                                                       [100%]\n18 passed in 0.08s","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:22:22.378Z","uuid":"3c5ba601-258a-4cf7-a8a9-3fc137d89402","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_013uCoW1XrPbfnEc6cVYQKyB","name":"Bash","input":{"command":"cat NOTES.md && git add NOTES.md && git commit -q -F - <<'EOF'\ndocs: add NOTES.md describing mode behavior\n\nRecords the tie-breaking rule (smallest value wins) and that empty\ninput raises ValueError, so the contract is visible without reading\nthe code.\n\nCo-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>\nEOF\ngit log --oneline -1; git status --short","description":"Show NOTES.md and commit it"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:22:22.589Z","uuid":"7b1e9710-7bdb-4e94-8d82-1eb5ed489893","promptId":"00fa3fa9-8f11-4b22-85ed-3a7860351e84","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_013uCoW1XrPbfnEc6cVYQKyB","content":"mode(xs) returns the most common value; ties go to the smallest value.\nmode([]) raises ValueError, matching mean and median.\n3e0fb80 docs: add NOTES.md describing mode behavior\n?? .claude/\n?? .codeman-agent-case.json\n?? CLAUDE.md\n?? origin.git/","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:22:25.852Z","uuid":"a4738207-9cb5-412c-87b6-72341877e04c","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01R5k4c8jEBRJMU6f2bmzWot","name":"Bash","input":{"command":"git push && git describe --tags","description":"Push to origin, then describe tags"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:22:26.103Z","uuid":"bcccaa97-6c16-4c96-8fb5-28b2f0bce660","promptId":"00fa3fa9-8f11-4b22-85ed-3a7860351e84","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01R5k4c8jEBRJMU6f2bmzWot","content":"Exit code 128\nTo ./origin.git\n   f80bb31..3e0fb80  master -> master\nfatal: No names found, cannot describe anything.","is_error":true}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:22:28.582Z","uuid":"c9d77cc5-5334-41e6-adb8-832bbe2436e0","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[]}}
+{"type":"assistant","timestamp":"2026-10-18T11:22:29.686Z","uuid":"b32b9122-cc3c-4282-ab3f-99e8704a5bf1","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01MXMH5exMTXSthViqhr2GTD","name":"Bash","input":{"command":"git --git-dir=origin.git log --oneline -1 master; git status -sb | head -1","description":"Confirm origin received the NOTES.md commit"},"caller":{"type":"direct"}}]}}
+{"type":"user","timestamp":"2026-10-18T11:22:29.866Z","uuid":"573fd19c-edad-4558-812a-03a0d06c20d8","promptId":"00fa3fa9-8f11-4b22-85ed-3a7860351e84","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"user","content":[{"type":"tool_result","tool_use_id":"toolu_01MXMH5exMTXSthViqhr2GTD","content":"3e0fb80 docs: add NOTES.md describing mode behavior\n## master...origin/master","is_error":false}]}}
+{"type":"assistant","timestamp":"2026-10-18T11:22:35.552Z","uuid":"9a2f203a-205a-4c8d-957c-9d164122f3aa","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"text","text":"`NOTES.md` has the two lines and is committed and pushed. As you expected, `git describe --tags` then failed because the repo has no tags.\n\n1. **One Bash command** appended these two lines to `NOTES.md`, creating the file since it didn't exist, then printed `calc_stats.py`:\n   ```\n   mode(xs) returns the most common value; ties go to the smallest value.\n   mode([]) raises ValueError, matching mean and median.\n   ```\n   `calc_stats.py` printed with all three functions and was unchanged.\n2. **`python3 -m pytest -q`:** 18 passed in 0.08s.\n3. **Commit:** `3e0fb80 docs: add NOTES.md describing mode behavior`. Only `NOTES.md` was staged.\n4. **`git push && git describe --tags`**, run exactly as written, exited with code 128:\n   ```\n   To ./origin.git\n      f80bb31..3e0fb80  master -> master\n   fatal: No names found, cannot describe anything.\n   ```\n   I checked afterwards: `./origin.git` now ends at `3e0fb80`, and local `master` has nothing left to push.\n\nFile created: /work/cases/story-r6-a/NOTES.md"}]}}
+{"type":"system","subtype":"stop_hook_summary","timestamp":"2026-10-18T11:22:35.694Z","uuid":"b1fbb824-3bff-4d07-9fd4-f7cb2173228e","isSidechain":false,"cwd":"/work/cases/story-r6-a","preventedContinuation":false}
+{"type":"system","subtype":"turn_duration","timestamp":"2026-10-18T11:22:35.705Z","uuid":"b91036a9-928a-4819-828c-dd723e8214dc","isSidechain":false,"isMeta":false,"cwd":"/work/cases/story-r6-a","durationMs":26949}
+{"type":"user","timestamp":"2026-10-18T11:24:43.121Z","uuid":"99adf4ae-2a72-4ecf-8d0e-e7f58d6503e8","promptId":"28c4d14d-c692-4464-abf5-74545606da6b","isSidechain":false,"turnOrigin":"human","promptSource":"typed","cwd":"/work/cases/story-r6-a","message":{"role":"user","content":"Reply with just the word ok, use no tools."}}
+{"type":"assistant","timestamp":"2026-10-18T11:24:45.907Z","uuid":"dfd3353b-5b5f-413f-a0e0-36f0531e9bfc","isSidechain":false,"cwd":"/work/cases/story-r6-a","message":{"role":"assistant","content":[{"type":"text","text":"ok"}]}}
+{"type":"system","subtype":"stop_hook_summary","timestamp":"2026-10-18T11:24:46.306Z","uuid":"d5136c42-04e8-42d3-ae23-5b51c59a9c1e","isSidechain":false,"cwd":"/work/cases/story-r6-a","preventedContinuation":false}
+{"type":"system","subtype":"turn_duration","timestamp":"2026-10-18T11:24:46.327Z","uuid":"d7f7fa6e-1114-43e5-aac6-fdc1f779c840","isSidechain":false,"isMeta":false,"cwd":"/work/cases/story-r6-a","durationMs":3286}
diff --git a/test/story-corpus.test.ts b/test/story-corpus.test.ts
index f12a6b6a..806f7639 100644
--- a/test/story-corpus.test.ts
+++ b/test/story-corpus.test.ts
@@ -55,7 +55,7 @@ function pagesOf(name: string) {
 
 describe('Story Mode on real sessions', () => {
   it('has the corpus', () => {
-    expect(NAMES.length).toBeGreaterThanOrEqual(9);
+    expect(NAMES.length).toBeGreaterThanOrEqual(11);
   });
 
   it.each(NAMES)('%s draws as it did when it was checked by hand', (name) => {
@@ -121,6 +121,37 @@ describe('Story Mode on real sessions', () => {
     });
   });
 
+  it('tests that do not load, a commit then a push in its own command, a push with a failing step after it', () => {
+    const [first, second, third] = pagesOf('errors-push-append');
+    expect(first.panels.find((p) => p.kind === 'check')?.story).toBe("The tests don't even load.");
+    expect(second.panels.find((p) => p.kind === 'loop')).toMatchObject({
+      story: 'Fix and test: the first run fails, the second passes.',
+      roundsOk: [false, true],
+    });
+    expect(second.panels.find((p) => p.kind === 'save')?.story).toBe(
+      'Claude saves the work and uploads it: "feat: add calc_stats.mode with smallest-value tie-breaking".'
+    );
+    expect(third.panels.find((p) => p.kind === 'save')?.story).toBe(
+      'Claude saves the work and uploads it, but a step after that fails.'
+    );
+  });
+
+  it('helpers and a command in the background: their reports are turns of their own, counted where they started', () => {
+    const pages = pagesOf('background-helpers-reports');
+    expect(pages[0].panels.find((p) => p.kind === 'backup')?.story).toBe(
+      'Claude sends 2 helpers off to work in the background.'
+    );
+    expect(pages[0].helpers).toBe(2);
+    for (const report of [pages[1], pages[2], pages[4], pages[5]]) {
+      expect(report.origin).toBe('task');
+      expect(report.helpers).toBe(0);
+      expect(report.panels[0].story).toBe('A background job reports back.');
+    }
+    expect(pages[3].panels.map((p) => p.story)).toContain('The tests run in the background and pass.');
+    // A python script that rewrote README.md counts as a change, beside the two files written.
+    expect(pages[3].panels.map((p) => p.story)).toContain('Claude changes 3 files.');
+  });
+
   it('a blocked command ends a turn where nothing worked, without a celebration', () => {
     const last = pagesOf('teammates-then-interrupt')[4];
     expect(last.panels.map((p) => p.story)).toEqual([
diff --git a/test/story-mode.test.ts b/test/story-mode.test.ts
index 729939f2..b2b266cb 100644
--- a/test/story-mode.test.ts
+++ b/test/story-mode.test.ts
@@ -740,6 +740,10 @@ describe('buildStoryTurns', () => {
     expect(first.events[1].output).toBe(
       'Finished in the background, exit code 0. Its report is the turn it came back in.'
     );
+    // Not tests that ran during that turn: they ran later, in the background.
+    expect(first.panels.find((p) => p.kind === 'check')!.caption.story).toBe(
+      'The tests run in the background and pass.'
+    );
     const second = buildStoryPage(turns[1]);
     expect(second.panels.find((p) => p.kind === 'check')).toMatchObject({
       caption: { story: 'The tests pass.' },
@@ -1051,6 +1055,14 @@ describe('buildStoryPage', () => {
     expect(files("python3 - <<'EOF'\nprint(open('a.py').read())\nEOF")).toEqual([]);
     const [edit] = heredocWrites("python3 - <<'EOF'\nopen('a.py', 'w').write('x')\nEOF", '/w');
     expect(edit).toMatchObject({ file: '/w/a.py', added: 0, removed: 0, hunks: [], truncated: true });
+    // A script that writes project files is an edit: it draws as a change, not as terminal work.
+    const lines = [
+      prompt('rewrite'),
+      ...bash('b1', "python3 - <<'EOF'\nopen('a.py', 'w').write('x')\nEOF", 'Rewrite a.py', ''),
+      end(1000),
+    ];
+    (lines[1] as { cwd?: string }).cwd = '/w';
+    expect(pageOf(lines).panels.map((p) => p.kind)).toEqual(['mission', 'fix', 'complete']);
   });
 
   it('a compaction says what it did; ToolSearch is looking; EnterPlanMode says plan mode', () => {