test: flaky-fix pass — fragment-match reads the agent's report, ff-update reap counts its own sleepers, install-admission gets a measured timeout, judge parse errors name the judge (GSTA-91)

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>
2026-11-05 08:23:59 +01:00 · 2026-10-25 13:43:12 +00:00
1 parent cb99df4a2f
commit 98a24e577f
@@ -1,5 +1,24 @@
 # Changelog

+## [Unreleased]
+
+**Four flaky tests now fail only for real defects, and a judge reply that isn't valid JSON says so in its failure line (daily flaky-fix pass, GSTA-91).** `context-restore-fragment-match` failed 0/3 on main cb99df4, although every run restored the right checkpoint: to find the checkpoint whose title matches, the agent often prints all three, and the case failed whenever another checkpoint's body appeared anywhere in the transcript. `test/gstack-ff-update.test.ts` counted every `sleep 300` on the machine, so heartbeats from parallel test files changed its count (remote pregate at #3412's head: expected "1", received "3"). The `GSTACK_CAPY=1` install-admission case in `test/gstack-skill-start.test.ts` makes ten `gstack-skill-start` spawns under bun's 5 s default timeout and took 3.6–5.7 s on a 4-core machine. The setup-browser-cookies workflow judge in train-4 gate 40173759210 returned JSON with an unescaped quote in its reasoning, and the flake record read only "JSON Parse error: Expected '}'".
+
+### Fixed
+- **`test/helpers/context-restore-fragment.ts`** (new): `fragmentRestoreVerdict` reads only the agent's report (top-level assistant text and the final result), never tool output. The report must carry the payments checkpoint's body and no other checkpoint's body. `test/skill-e2e-context-skills.test.ts` uses it for the fragment-match case.
+- **`test/helpers/llm-judge.ts`**: when a judge response is not valid JSON, `callJudge` throws a `SyntaxError` that names the judge output, its stop reason and length, and the retained `llm-judge-response-parse-error` event. It still fails closed and parses no score; the request is unchanged.
+
+### Tests
+- `test/context-restore-fragment-verdict.test.ts` replays the three captured false reds from main (`test/fixtures/context-restore-fragment-match-captures.json`) as passes. Controls that must fail: captures rewritten to resume alpha or omega, synthetic runs that read and resume only alpha or omega, resume summaries that mix two checkpoints, and a payments body that appears only in tool output. Restoring the old any-byte surface fails all four positive controls. Focused paid runs of the case: 0/3 on main, 3/3 after (about $0.11 a trial).
+- `test/llm-judge-frontier.test.ts` replays the exact captured cookie-judge reply: it fails closed with no score, one request and the new diagnosis. It fails on the previous helper.
+- `test/gstack-ff-update.test.ts`: the reap case runs `gstack-ff-update` with a heartbeat interval unique to the test process and counts only sleepers of that interval, starting from zero. The old count failed with a loop starting unrelated `sleep 300` processes beside it (expected "5", received "14"); the new one passes, and still fails when the bin stops reaping its sleeper.
+- `test/gstack-skill-start.test.ts`: the `GSTACK_CAPY=1` install-admission case gets an explicit 20 s timeout. Measured on a 4-core Capy machine with a temporary 60 s cap: 3.6–5.7 s through Capy's git shim (9 of 10 over 5 s), 2.6–4.9 s with the real git binary. Four of its ten spawns are full admissions at about 800 ms each.
+
+### Gate integrity
+- One test budget changed, approved by GStack Minder on 2026-10-25: the install-admission case's timeout goes from bun's 5 s default to 20 s, about 3.5 times the 5.7 s worst case measured above. No assertion changed.
+- `context-restore-fragment-match`: the failure surface moves from the whole transcript to the agent's report. Alpha or omega bytes in tool output no longer fail the case; the payments body in tool output no longer counts as loaded, so the report must show it. A run that resumes another checkpoint, or mixes two, still fails. `test/test-of-test-ratchet.test.ts` gains one BASELINE entry, the replay test, with its reason, and the new helper joins the touchfiles of the nine context-skills cases, as the derived-closure rule requires.
+- No threshold, trial count, case kind, rubric, judge request or prompt changed.
+
 ## [1.91.211.0] - 2026-10-25

 **`gstack-diff-scope` sees Python tests and nested test directories (#3335).** A branch that changed `components/orch/services/shared/tests/test_native_store_custody.py` reported `SCOPE_TESTS=false`, because the Tests rule only knew `*.test.*`-style suffixes and `test/`, `tests/`, `spec/` and `__tests__/` at the repository root. /ship and /review use that flag to route the testing specialist, so a backend change whose tests follow pytest's `test_*.py` convention skipped it. The test-bootstrap resolver already counted these files, so the two detectors disagreed.
@@ -0,0 +1,121 @@
+import { describe, test, expect } from 'bun:test';
+import * as fs from 'fs';
+import * as path from 'path';
+import { parseNDJSON } from './helpers/session-runner';
+import { fragmentRestoreVerdict } from './helpers/context-restore-fragment';
+
+const MARKERS = { restored: 'FRAGMATCH_PAYMENTS_BUILD', others: ['FRAGMATCH_ALPHA_BUILD', 'FRAGMATCH_OMEGA_BUILD'] };
+const BODIES: Record<string, string> = {
+  '20260101-120000-alpha-feature.md': 'branch: feat/alpha\n## Working on: alpha feature\n### Summary\nAlpha content FRAGMATCH_ALPHA_BUILD\n',
+  '20260202-120000-middle-payments.md': 'branch: feat/payments\n## Working on: middle payments\n### Summary\nPayments content FRAGMATCH_PAYMENTS_BUILD\n',
+  '20260303-120000-omega-release.md': 'branch: feat/omega\n## Working on: omega release\n### Summary\nOmega content FRAGMATCH_OMEGA_BUILD\n',
+};
+const ALL_FILES = Object.keys(BODIES);
+
+const captures: { sessions: Array<{ session_id: string; ndjson: string[] }> } = JSON.parse(
+  fs.readFileSync(path.join(import.meta.dir, 'fixtures', 'context-restore-fragment-match-captures.json'), 'utf8'),
+);
+
+function replay(lines: string[]) {
+  const parsed = parseNDJSON(lines);
+  return { ...parsed, output: parsed.resultLine?.result || '' };
+}
+
+function toolOutput(run: ReturnType<typeof replay>): string {
+  return run.toolCalls.map((call) => call.output).join('\n');
+}
+
+function isReportLine(line: string): boolean {
+  const event = JSON.parse(line);
+  return event.type === 'result'
+    || (event.type === 'assistant' && event.message.content.some((block: any) => block.type === 'text'));
+}
+
+function rewriteReport(lines: string[], rewrite: (line: string) => string): string[] {
+  return lines.map((line) => (isReportLine(line) ? rewrite(line) : line));
+}
+
+function synthetic(files: string[], report: string): string[] {
+  const lines: string[] = [
+    JSON.stringify({ type: 'assistant', parent_tool_use_id: null, message: { content: [{ type: 'tool_use', id: 'skill', name: 'Skill', input: { skill: 'context-restore', args: 'payments' } }] } }),
+    JSON.stringify({ type: 'user', parent_tool_use_id: null, message: { content: [{ type: 'tool_result', tool_use_id: 'skill', content: 'Launching skill: context-restore' }] } }),
+  ];
+  files.forEach((file, i) => {
+    lines.push(JSON.stringify({ type: 'assistant', parent_tool_use_id: null, message: { content: [{ type: 'tool_use', id: `read-${i}`, name: 'Read', input: { file_path: `.gstack-home/projects/p/checkpoints/${file}` } }] } }));
+    lines.push(JSON.stringify({ type: 'user', parent_tool_use_id: null, message: { content: [{ type: 'tool_result', tool_use_id: `read-${i}`, content: BODIES[file] }] } }));
+  });
+  if (report) {
+    lines.push(JSON.stringify({ type: 'assistant', parent_tool_use_id: null, message: { content: [{ type: 'text', text: report }] } }));
+  }
+  lines.push(JSON.stringify({ type: 'result', subtype: report ? 'success' : 'error_max_turns', result: report }));
+  return lines;
+}
+
+function resumeReport(file: string, ...summaries: string[]): string {
+  return `I loaded \`${file}\`.\n\nRESUMING CONTEXT\n### Summary\n${summaries.join('\n')}\n`;
+}
+
+describe('context-restore-fragment-match verdict', () => {
+  test('captured runs hold three sessions that each printed another checkpoint body', () => {
+    expect(captures.sessions).toHaveLength(3);
+    for (const session of captures.sessions) {
+      const run = replay(session.ndjson);
+      expect(run.toolCalls.map((call) => call.tool)).toContain('Skill');
+      expect(toolOutput(run)).toContain('FRAGMATCH_PAYMENTS_BUILD');
+      expect(MARKERS.others.some((marker) => toolOutput(run).includes(marker))).toBe(true);
+    }
+  });
+
+  test.each(captures.sessions.map((s) => [s.session_id, s.ndjson] as const))(
+    'captured run %s: inspected every checkpoint, restored payments -> pass',
+    (_id, ndjson) => {
+      expect(fragmentRestoreVerdict(replay(ndjson), MARKERS)).toEqual({ loadedTarget: true, didNotLoadOthers: true });
+    },
+  );
+
+  test('synthetic: prints every checkpoint, reports payments -> pass', () => {
+    const run = replay(synthetic(ALL_FILES, resumeReport(ALL_FILES[1], 'Payments content FRAGMATCH_PAYMENTS_BUILD')));
+    expect(fragmentRestoreVerdict(run, MARKERS)).toEqual({ loadedTarget: true, didNotLoadOthers: true });
+  });
+
+  test.each([
+    ['alpha', 'FRAGMATCH_ALPHA_BUILD'],
+    ['omega', 'FRAGMATCH_OMEGA_BUILD'],
+  ])('captured run rewritten to resume %s -> fail', (_name, marker) => {
+    for (const session of captures.sessions) {
+      const run = replay(rewriteReport(session.ndjson, (line) => line.replaceAll('FRAGMATCH_PAYMENTS_BUILD', marker)));
+      expect(toolOutput(run)).toContain('FRAGMATCH_PAYMENTS_BUILD');
+      expect(fragmentRestoreVerdict(run, MARKERS)).toEqual({ loadedTarget: false, didNotLoadOthers: false });
+    }
+  });
+
+  test.each([
+    ['alpha', ALL_FILES[0], 'Alpha content FRAGMATCH_ALPHA_BUILD'],
+    ['omega', ALL_FILES[2], 'Omega content FRAGMATCH_OMEGA_BUILD'],
+  ])('synthetic: reads only %s and resumes it -> fail', (_name, file, summary) => {
+    const run = replay(synthetic([file], resumeReport(file, summary)));
+    expect(fragmentRestoreVerdict(run, MARKERS)).toEqual({ loadedTarget: false, didNotLoadOthers: false });
+  });
+
+  test('captured run with omega content mixed into the resume summary -> fail', () => {
+    for (const session of captures.sessions) {
+      const mixed = rewriteReport(session.ndjson, (line) => line.replaceAll(
+        'Payments content FRAGMATCH_PAYMENTS_BUILD', 'Payments content FRAGMATCH_PAYMENTS_BUILD\\nOmega content FRAGMATCH_OMEGA_BUILD'));
+      expect(fragmentRestoreVerdict(replay(mixed), MARKERS)).toEqual({ loadedTarget: true, didNotLoadOthers: false });
+    }
+  });
+
+  test('synthetic: resume summary mixes alpha and payments -> fail', () => {
+    const run = replay(synthetic(ALL_FILES, resumeReport(ALL_FILES[1],
+      'Payments content FRAGMATCH_PAYMENTS_BUILD', 'Alpha content FRAGMATCH_ALPHA_BUILD')));
+    expect(fragmentRestoreVerdict(run, MARKERS)).toEqual({ loadedTarget: true, didNotLoadOthers: false });
+  });
+
+  test('payments body only in tool output, no report of it -> fail', () => {
+    const noReport = replay(synthetic([ALL_FILES[1]], ''));
+    expect(toolOutput(noReport)).toContain('FRAGMATCH_PAYMENTS_BUILD');
+    expect(fragmentRestoreVerdict(noReport, MARKERS).loadedTarget).toBe(false);
+    const nameOnly = replay(synthetic(ALL_FILES, `I loaded \`${ALL_FILES[1]}\`.`));
+    expect(fragmentRestoreVerdict(nameOnly, MARKERS).loadedTarget).toBe(false);
+  });
+});
@@ -0,0 +1,51 @@
+{
+ "provenance": {
+  "case": "context-restore-fragment-match",
+  "run": "local paid baseline: scripts/test-paid-shards.ts --tier periodic --case context-restore-fragment-match --trials 3 (0/3, all on didNotLoadOthers)",
+  "head": "cb99df4a2fc45bc983e0a64f862f79fab0ce899a",
+  "claude_code": "2.1.292",
+  "source_sha256": "2d05a7257f7d559d60ec2e644178a3d65cd0799121260633c931d5b54755b495",
+  "projection": "Raw NDJSON lines of each session's assistant, user and result events, unchanged; system events, thinking-only assistant events and the synthetic user message carrying the extracted SKILL.md body dropped."
+ },
+ "sessions": [
+  {
+   "session_id": "d1147327-49e3-4371-ab54-784d135573ac",
+   "ndjson": [
+    "{\"type\":\"assistant\",\"message\":{\"model\":\"claude-opus-5-5\",\"id\":\"msg_011CgP2Sp1UcGZ3JFpbUbxQg\",\"type\":\"message\",\"role\":\"assistant\",\"content\":[{\"type\":\"tool_use\",\"id\":\"toolu_01HHxMjn7G6dQ36WFwvafm5W\",\"name\":\"Skill\",\"input\":{\"skill\":\"context-restore\",\"args\":\"payments\"},\"caller\":{\"type\":\"direct\"}}],\"container\":null,\"stop_reason\":null,\"stop_sequence\":null,\"stop_details\":null,\"usage\":{\"input_tokens\":2,\"cache_creation_input_tokens\":6256,\"cache_read_input_tokens\":12042,\"cache_creation\":{\"ephemeral_5m_input_tokens\":6256,\"ephemeral_1h_input_tokens\":0},\"output_tokens\":16,\"service_tier\":\"standard\",\"inference_geo\":\"global\",\"speed\":\"standard\"},\"input_transformations\":[],\"diagnostics\":null,\"context_management\":null},\"parent_tool_use_id\":null,\"session_id\":\"d1147327-49e3-4371-ab54-784d135573ac\",\"uuid\":\"691912ce-6742-4e21-8f4c-a3cfa15b4112\",\"timestamp\":\"2026-10-25T13:21:55.808Z\",\"request_id\":\"req_011CgP2Som6KWQBvN4W6W3B8\",\"wire_tool_inputs\":{\"toolu_01HHxMjn7G6dQ36WFwvafm5W\":{\"skill\":\"context-restore\",\"args\":\"payments\"}}}",
+    "{\"type\":\"user\",\"message\":{\"role\":\"user\",\"content\":[{\"type\":\"tool_result\",\"tool_use_id\":\"toolu_01HHxMjn7G6dQ36WFwvafm5W\",\"content\":\"Launching skill: context-restore\"}]},\"parent_tool_use_id\":null,\"session_id\":\"d1147327-49e3-4371-ab54-784d135573ac\",\"uuid\":\"9e05cd18-bf0c-4d75-93d8-db0f817d8c87\",\"timestamp\":\"2026-10-25T13:21:55.840Z\",\"tool_use_result\":{\"success\":true,\"commandName\":\"context-restore\",\"allowedTools\":[\"Bash\",\"Read\",\"Glob\",\"Grep\",\"AskUserQuestion\"]}}",
+    "{\"type\":\"assistant\",\"message\":{\"model\":\"claude-opus-5-5\",\"id\":\"msg_011CgP2SwJ2idXv6jZBjmMRS\",\"type\":\"message\",\"role\":\"assistant\",\"content\":[{\"type\":\"tool_use\",\"id\":\"toolu_01EyWkH3v7Gu7cBDAgVzCiSu\",\"name\":\"Bash\",\"input\":{\"command\":\"cd /tmp/gstack-paid-shard-O15pOD/tmp/skill-e2e-ctx-fragment-svqfPa; ls bin; export GSTACK_HOME=\\\"$PWD/.gstack-home\\\"; B=./bin\\nGSTACK_STATE_ROOT=$($B/gstack-paths --get GSTACK_STATE_ROOT); echo ROOT=$GSTACK_STATE_ROOT\\nSLUG=$($B/gstack-slug --get SLUG 2>/dev/null); echo SLUG=$SLUG\\nCHECKPOINT_DIR=\\\"$GSTACK_STATE_ROOT/projects/$SLUG/checkpoints\\\"; ls -la \\\"$CHECKPOINT_DIR\\\"; find .gstack-home -type f\"},\"caller\":{\"type\":\"direct\"}}],\"container\":null,\"stop_reason\":null,\"stop_sequence\":null,\"stop_details\":null,\"usage\":{\"input_tokens\":2,\"cache_creation_input_tokens\":6339,\"cache_read_input_tokens\":18298,\"cache_creation\":{\"ephemeral_5m_input_tokens\":6339,\"ephemeral_1h_input_tokens\":0},\"output_tokens\":8,\"service_tier\":\"standard\",\"inference_geo\":\"global\",\"speed\":\"standard\"},\"input_transformations\":[],\"diagnostics\":null,\"context_management\":null},\"parent_tool_use_id\":null,\"session_id\":\"d1147327-49e3-4371-ab54-784d135573ac\",\"uuid\":\"c6cad35f-a6b6-4eb2-8741-39112ddc1cae\",\"timestamp\":\"2026-10-25T13:21:58.959Z\",\"request_id\":\"req_011CgP2Sw39kvpLEXQaPZoUk\",\"wire_tool_inputs\":{\"toolu_01EyWkH3v7Gu7cBDAgVzCiSu\":{\"command\":\"cd /tmp/gstack-paid-shard-O15pOD/tmp/skill-e2e-ctx-fragment-svqfPa; ls bin; export GSTACK_HOME=\\\"$PWD/.gstack-home\\\"; B=./bin\\nGSTACK_STATE_ROOT=$($B/gstack-paths --get GSTACK_STATE_ROOT); echo ROOT=$GSTACK_STATE_ROOT\\nSLUG=$($B/gstack-slug --get SLUG 2>/dev/null); echo SLUG=$SLUG\\nCHECKPOINT_DIR=\\\"$GSTACK_STATE_ROOT/projects/$SLUG/checkpoints\\\"; ls -la \\\"$CHECKPOINT_DIR\\\"; find .gstack-home -type f\"}}}",
+    "{\"type\":\"user\",\"message\":{\"role\":\"user\",\"content\":[{\"tool_use_id\":\"toolu_01EyWkH3v7Gu7cBDAgVzCiSu\",\"type\":\"tool_result\",\"content\":\"gstack-config\\ngstack-learnings-log\\ngstack-learnings-search\\ngstack-paths\\ngstack-remote-identity.sh\\ngstack-repo-mode\\ngstack-slug\\ngstack-state-root.sh\\ngstack-timeline-log\\ngstack-timeline-read\\ngstack-update-check\\nROOT=/tmp/gstack-paid-shard-O15pOD/tmp/skill-e2e-ctx-fragment-svqfPa/.gstack-home\\nSLUG=skill-e2e-ctx-fragment-svqfPa\\ntotal 16\\ndrwxr-xr-x 2 user user 4096 Oct 25 13:21 .\\ndrwxr-xr-x 3 user user   60 Oct 25 13:21 ..\\n-rw-r--r-- 1 user user  157 Oct 25 13:21 20260101-120000-alpha-feature.md\\n-rw-r--r-- 1 user user  168 Oct 25 13:21 20260202-120000-middle-payments.md\\n-rw-r--r-- 1 user user  157 Oct 25 13:21 20260303-120000-omega-release.md\\n.gstack-home/projects/skill-e2e-ctx-fragment-svqfPa/checkpoints/20260101-120000-alpha-feature.md\\n.gstack-home/projects/skill-e2e-ctx-fragment-svqfPa/checkpoints/20260202-120000-middle-payments.md\\n.gstack-home/projects/skill-e2e-ctx-fragment-svqfPa/checkpoints/20260303-120000-omega-release.md\\n.gstack-home/slug-cache/_tmp_gstack-paid-shard-O15pOD_tmp_skill-e2e-ctx-fragment-svqfPa_.git\\n.gstack-home/slug-cache/_tmp_gstack-paid-shard-O15pOD_tmp_skill-e2e-ctx-fragment-svqfPa\",\"is_error\":false}]},\"parent_tool_use_id\":null,\"session_id\":\"d1147327-49e3-4371-ab54-784d135573ac\",\"uuid\":\"1beb6923-1013-4359-a964-2b06e7594c17\",\"timestamp\":\"2026-10-25T13:21:59.621Z\",\"tool_use_result\":{\"stdout\":\"gstack-config\\ngstack-learnings-log\\ngstack-learnings-search\\ngstack-paths\\ngstack-remote-identity.sh\\ngstack-repo-mode\\ngstack-slug\\ngstack-state-root.sh\\ngstack-timeline-log\\ngstack-timeline-read\\ngstack-update-check\\nROOT=/tmp/gstack-paid-shard-O15pOD/tmp/skill-e2e-ctx-fragment-svqfPa/.gstack-home\\nSLUG=skill-e2e-ctx-fragment-svqfPa\\ntotal 16\\ndrwxr-xr-x 2 user user 4096 Oct 25 13:21 .\\ndrwxr-xr-x 3 user user   60 Oct 25 13:21 ..\\n-rw-r--r-- 1 user user  157 Oct 25 13:21 20260101-120000-alpha-feature.md\\n-rw-r--r-- 1 user user  168 Oct 25 13:21 20260202-120000-middle-payments.md\\n-rw-r--r-- 1 user user  157 Oct 25 13:21 20260303-120000-omega-release.md\\n.gstack-home/projects/skill-e2e-ctx-fragment-svqfPa/checkpoints/20260101-120000-alpha-feature.md\\n.gstack-home/projects/skill-e2e-ctx-fragment-svqfPa/checkpoints/20260202-120000-middle-payments.md\\n.gstack-home/projects/skill-e2e-ctx-fragment-svqfPa/checkpoints/20260303-120000-omega-release.md\\n.gstack-home/slug-cache/_tmp_gstack-paid-shard-O15pOD_tmp_skill-e2e-ctx-fragment-svqfPa_.git\\n.gstack-home/slug-cache/_tmp_gstack-paid-shard-O15pOD_tmp_skill-e2e-ctx-fragment-svqfPa\",\"stderr\":\"\",\"interrupted\":false,\"isImage\":false,\"noOutputExpected\":false,\"bashEditDiff\":{\"files\":[{\"filePath\":\"/tmp/gstack-paid-shard-O15pOD/tmp/skill-e2e-ctx-fragment-svqfPa/.gstack-home/slug-cache/_tmp_gstack-paid-shard-O15pOD_tmp_skill-e2e-ctx-fragment-svqfPa\",\"hunks\":[{\"oldStart\":0,\"oldLines\":0,\"newStart\":1,\"newLines\":1,\"lines\":[\"+v2:skill-e2e-ctx-fragment-svqfPa\"]}],\"created\":true},{\"filePath\":\"/tmp/gstack-paid-shard-O15pOD/tmp/skill-e2e-ctx-fragment-svqfPa/.gstack-home/slug-cache/_tmp_gstack-paid-shard-O15pOD_tmp_skill-e2e-ctx-fragment-svqfPa_.git\",\"hunks\":[{\"oldStart\":0,\"oldLines\":0,\"newStart\":1,\"newLines\":1,\"lines\":[\"+v2:skill-e2e-ctx-fragment-svqfPa\"]}],\"created\":true}],\"moreFiles\":0,\"changedFiles\":[\"/tmp/gstack-paid-shard-O15pOD/tmp/skill-e2e-ctx-fragment-svqfPa/.gstack-home/slug-cache/_tmp_gstack-paid-shard-O15pOD_tmp_skill-e2e-ctx-fragment-svqfPa\",\"/tmp/gstack-paid-shard-O15pOD/tmp/skill-e2e-ctx-fragment-svqfPa/.gstack-home/slug-cache/_tmp_gstack-paid-shard-O15pOD_tmp_skill-e2e-ctx-fragment-svqfPa_.git\"]}}}",
+    "{\"type\":\"assistant\",\"message\":{\"model\":\"claude-opus-5-5\",\"id\":\"msg_011CgP2TDR8mJC7cqYJgSDrA\",\"type\":\"message\",\"role\":\"assistant\",\"content\":[{\"type\":\"tool_use\",\"id\":\"toolu_01E9t3wnBeL5brVygUoRfuoh\",\"name\":\"Bash\",\"input\":{\"command\":\"cd /tmp/gstack-paid-shard-O15pOD/tmp/skill-e2e-ctx-fragment-svqfPa/.gstack-home/projects/*/checkpoints; for f in *; do echo \\\"== $f\\\"; cat \\\"$f\\\"; done; cd ../../../..; export GSTACK_HOME=\\\"$PWD/.gstack-home\\\"; ls .gstack-home/projects/*/checkpoints/*.md | ./bin/gstack-slug --classify-checkpoints; echo rc=$?\"},\"caller\":{\"type\":\"direct\"}}],\"container\":null,\"stop_reason\":null,\"stop_sequence\":null,\"stop_details\":null,\"usage\":{\"input_tokens\":2,\"cache_creation_input_tokens\":1039,\"cache_read_input_tokens\":24637,\"cache_creation\":{\"ephemeral_5m_input_tokens\":1039,\"ephemeral_1h_input_tokens\":0},\"output_tokens\":16,\"service_tier\":\"standard\",\"inference_geo\":\"global\",\"speed\":\"standard\"},\"input_transformations\":[],\"diagnostics\":null,\"context_management\":null},\"parent_tool_use_id\":null,\"session_id\":\"d1147327-49e3-4371-ab54-784d135573ac\",\"uuid\":\"9fa3b490-1be5-4221-b712-c671e2422c46\",\"timestamp\":\"2026-10-25T13:22:01.775Z\",\"request_id\":\"req_011CgP2TD6nbxFnYubbkBVGv\",\"wire_tool_inputs\":{\"toolu_01E9t3wnBeL5brVygUoRfuoh\":{\"command\":\"cd /tmp/gstack-paid-shard-O15pOD/tmp/skill-e2e-ctx-fragment-svqfPa/.gstack-home/projects/*/checkpoints; for f in *; do echo \\\"== $f\\\"; cat \\\"$f\\\"; done; cd ../../../..; export GSTACK_HOME=\\\"$PWD/.gstack-home\\\"; ls .gstack-home/projects/*/checkpoints/*.md | ./bin/gstack-slug --classify-checkpoints; echo rc=$?\"}}}",
+    "{\"type\":\"user\",\"message\":{\"role\":\"user\",\"content\":[{\"tool_use_id\":\"toolu_01E9t3wnBeL5brVygUoRfuoh\",\"type\":\"tool_result\",\"content\":\"== 20260101-120000-alpha-feature.md\\n---\\nstatus: in-progress\\nbranch: feat/alpha\\ntimestamp: 2026-01-01T12:00:00Z\\n---\\n## Working on: alpha feature\\n\\n### Summary\\nAlpha content FRAGMATCH_ALPHA_BUILD\\n== 20260202-120000-middle-payments.md\\n---\\nstatus: in-progress\\nbranch: feat/payments\\ntimestamp: 2026-02-02T12:00:00Z\\n---\\n## Working on: middle payments\\n\\n### Summary\\nPayments content FRAGMATCH_PAYMENTS_BUILD\\n== 20260303-120000-omega-release.md\\n---\\nstatus: in-progress\\nbranch: feat/omega\\ntimestamp: 2026-03-03T12:00:00Z\\n---\\n## Working on: omega release\\n\\n### Summary\\nOmega content FRAGMATCH_OMEGA_BUILD\\nunstamped\\t.gstack-home/projects/skill-e2e-ctx-fragment-svqfPa/checkpoints/20260101-120000-alpha-feature.md\\nunstamped\\t.gstack-home/projects/skill-e2e-ctx-fragment-svqfPa/checkpoints/20260202-120000-middle-payments.md\\nunstamped\\t.gstack-home/projects/skill-e2e-ctx-fragment-svqfPa/checkpoints/20260303-120000-omega-release.md\\nrc=0\",\"is_error\":false}]},\"parent_tool_use_id\":null,\"session_id\":\"d1147327-49e3-4371-ab54-784d135573ac\",\"uuid\":\"96853ca6-5db9-445b-ab54-ac9103ca336a\",\"timestamp\":\"2026-10-25T13:22:02.045Z\",\"tool_use_result\":{\"stdout\":\"== 20260101-120000-alpha-feature.md\\n---\\nstatus: in-progress\\nbranch: feat/alpha\\ntimestamp: 2026-01-01T12:00:00Z\\n---\\n## Working on: alpha feature\\n\\n### Summary\\nAlpha content FRAGMATCH_ALPHA_BUILD\\n== 20260202-120000-middle-payments.md\\n---\\nstatus: in-progress\\nbranch: feat/payments\\ntimestamp: 2026-02-02T12:00:00Z\\n---\\n## Working on: middle payments\\n\\n### Summary\\nPayments content FRAGMATCH_PAYMENTS_BUILD\\n== 20260303-120000-omega-release.md\\n---\\nstatus: in-progress\\nbranch: feat/omega\\ntimestamp: 2026-03-03T12:00:00Z\\n---\\n## Working on: omega release\\n\\n### Summary\\nOmega content FRAGMATCH_OMEGA_BUILD\\nunstamped\\t.gstack-home/projects/skill-e2e-ctx-fragment-svqfPa/checkpoints/20260101-120000-alpha-feature.md\\nunstamped\\t.gstack-home/projects/skill-e2e-ctx-fragment-svqfPa/checkpoints/20260202-120000-middle-payments.md\\nunstamped\\t.gstack-home/projects/skill-e2e-ctx-fragment-svqfPa/checkpoints/20260303-120000-omega-release.md\\nrc=0\",\"stderr\":\"\",\"interrupted\":false,\"isImage\":false,\"noOutputExpected\":false}}",
+    "{\"type\":\"assistant\",\"message\":{\"model\":\"claude-opus-5-5\",\"id\":\"msg_011CgP2TPmyymz1BeaE3qngr\",\"type\":\"message\",\"role\":\"assistant\",\"content\":[{\"type\":\"text\",\"text\":\"I loaded the checkpoint matching \\\"payments\\\": `20260202-120000-middle-payments.md`. It's the only one of the three saved checkpoints whose title contains that word. All three are unstamped and none come from another project, so there's no project mismatch.\\n\\n```\\nRESUMING CONTEXT\\n════════════════════════════════════════\\nTitle:       middle payments\\nBranch:      feat/payments\\nSaved:       Feb 2, 2026, 12:00 UTC\\nDuration:    (not recorded)\\nStatus:      in-progress\\n════════════════════════════════════════\\n\\n### Summary\\nPayments content FRAGMATCH_PAYMENTS_BUILD\\n\\n### Remaining Work\\n(none recorded in the checkpoint)\\n\\n### Notes\\n(none recorded)\\n```\\n\\n**Branch:** this context was saved on `feat/payments`, but you're on `main`. You may want to switch to `feat/payments` before continuing.\\n\\nThe other two checkpoints, which I did not load:\\n- `alpha feature` (`feat/alpha`, 2026-01-01)\\n- `omega release` (`feat/omega`, 2026-03-03), the newest\\n\\nYou asked me not to use AskUserQuestion, so I skipped the follow-up prompt. The checkpoint lists no remaining work. You can continue on the payments work, see the full saved file (it's only the short content above), or stop here.\"}],\"container\":null,\"stop_reason\":null,\"stop_sequence\":null,\"stop_details\":null,\"usage\":{\"input_tokens\":2,\"cache_creation_input_tokens\":718,\"cache_read_input_tokens\":25676,\"cache_creation\":{\"ephemeral_5m_input_tokens\":718,\"ephemeral_1h_input_tokens\":0},\"output_tokens\":7,\"service_tier\":\"standard\",\"inference_geo\":\"global\",\"speed\":\"standard\"},\"input_transformations\":[],\"diagnostics\":null,\"context_management\":null},\"parent_tool_use_id\":null,\"session_id\":\"d1147327-49e3-4371-ab54-784d135573ac\",\"uuid\":\"833cfc7c-5f23-4673-b45c-d7d70c0e3f35\",\"timestamp\":\"2026-10-25T13:22:06.611Z\",\"request_id\":\"req_011CgP2TPV8JNDtZyf4D3mYB\"}",
+    "{\"duration_api_ms\":11552,\"stop_reason\":\"end_turn\",\"session_id\":\"d1147327-49e3-4371-ab54-784d135573ac\",\"total_cost_usd\":0.1106026,\"usage\":{\"input_tokens\":8,\"cache_creation_input_tokens\":14352,\"cache_read_input_tokens\":80653,\"output_tokens\":1134,\"output_tokens_details\":{\"thinking_tokens\":86},\"server_tool_use\":{\"web_search_requests\":0,\"web_fetch_requests\":0},\"service_tier\":\"standard\",\"cache_creation\":{\"ephemeral_1h_input_tokens\":0,\"ephemeral_5m_input_tokens\":14352},\"inference_geo\":\"global\",\"iterations\":[{\"input_tokens\":2,\"output_tokens\":484,\"cache_read_input_tokens\":25676,\"cache_creation_input_tokens\":718,\"cache_creation\":{\"ephemeral_5m_input_tokens\":718,\"ephemeral_1h_input_tokens\":0},\"type\":\"message\"}],\"speed\":\"standard\",\"fallback_credit\":null},\"modelUsage\":{\"claude-opus-5-5\":{\"inputTokens\":8,\"outputTokens\":1134,\"cacheReadInputTokens\":80653,\"cacheCreationInputTokens\":14352,\"webSearchRequests\":0,\"costUSD\":0.1106026,\"contextWindow\":1000000,\"maxOutputTokens\":128000,\"thinkingTokens\":86,\"canonicalModel\":\"claude-opus-5-5\",\"provider\":\"firstParty\",\"costBasis\":\"list\"}},\"permission_denials\":[],\"terminal_reason\":\"completed\",\"fast_mode_state\":\"off\",\"fast_mode_disabled_reason\":\"sdk_opt_in_required\",\"subagent_stats\":{\"spawned\":0,\"requested\":{\"background\":0,\"foreground\":0,\"unset\":0},\"started_in_background\":0,\"max_depth\":0,\"spawned_by_subagents\":0,\"completed\":0,\"failed\":0,\"killed\":{\"parent\":0,\"user\":0,\"system\":0},\"refused\":{\"depth_limit\":0,\"concurrency_limit\":0,\"budget\":0},\"by_type\":{}},\"safety_stops\":0,\"is_error\":false,\"num_turns\":5,\"subtype\":\"success\",\"api_error_status\":null,\"result\":\"I loaded the checkpoint matching \\\"payments\\\": `20260202-120000-middle-payments.md`. It's the only one of the three saved checkpoints whose title contains that word. All three are unstamped and none come from another project, so there's no project mismatch.\\n\\n```\\nRESUMING CONTEXT\\n════════════════════════════════════════\\nTitle:       middle payments\\nBranch:      feat/payments\\nSaved:       Feb 2, 2026, 12:00 UTC\\nDuration:    (not recorded)\\nStatus:      in-progress\\n════════════════════════════════════════\\n\\n### Summary\\nPayments content FRAGMATCH_PAYMENTS_BUILD\\n\\n### Remaining Work\\n(none recorded in the checkpoint)\\n\\n### Notes\\n(none recorded)\\n```\\n\\n**Branch:** this context was saved on `feat/payments`, but you're on `main`. You may want to switch to `feat/payments` before continuing.\\n\\nThe other two checkpoints, which I did not load:\\n- `alpha feature` (`feat/alpha`, 2026-01-01)\\n- `omega release` (`feat/omega`, 2026-03-03), the newest\\n\\nYou asked me not to use AskUserQuestion, so I skipped the follow-up prompt. The checkpoint lists no remaining work. You can continue on the payments work, see the full saved file (it's only the short content above), or stop here.\",\"ttft_ms\":1839,\"type\":\"result\",\"duration_ms\":12657,\"uuid\":\"170f9374-7a93-44aa-9ce6-c54054faf5cc\",\"ttft_stream_ms\":902,\"time_to_request_ms\":199,\"first_content_frame_ms\":902,\"queued_turn_count\":0,\"result_index\":0}"
+   ]
+  },
+  {
+   "session_id": "8889e81b-d4bf-4eba-9ade-cd8805219972",
+   "ndjson": [
+    "{\"type\":\"assistant\",\"message\":{\"model\":\"claude-opus-5-5\",\"id\":\"msg_011CgP2SpsKBS3fLGqXc3Bwm\",\"type\":\"message\",\"role\":\"assistant\",\"content\":[{\"type\":\"tool_use\",\"id\":\"toolu_01DewVZTi4xMmGQYH14JLR52\",\"name\":\"Skill\",\"input\":{\"skill\":\"context-restore\",\"args\":\"payments\"},\"caller\":{\"type\":\"direct\"}}],\"container\":null,\"stop_reason\":null,\"stop_sequence\":null,\"stop_details\":null,\"usage\":{\"input_tokens\":2,\"cache_creation_input_tokens\":6260,\"cache_read_input_tokens\":12042,\"cache_creation\":{\"ephemeral_5m_input_tokens\":6260,\"ephemeral_1h_input_tokens\":0},\"output_tokens\":16,\"service_tier\":\"standard\",\"inference_geo\":\"global\",\"speed\":\"standard\"},\"input_transformations\":[],\"diagnostics\":null,\"context_management\":null},\"parent_tool_use_id\":null,\"session_id\":\"8889e81b-d4bf-4eba-9ade-cd8805219972\",\"uuid\":\"73df9278-656a-4350-9f2b-11f00fc83e23\",\"timestamp\":\"2026-10-25T13:21:55.982Z\",\"request_id\":\"req_011CgP2SpdBaxUoNcNgUqkdU\",\"wire_tool_inputs\":{\"toolu_01DewVZTi4xMmGQYH14JLR52\":{\"skill\":\"context-restore\",\"args\":\"payments\"}}}",
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+    "{\"type\":\"assistant\",\"message\":{\"model\":\"claude-opus-5-5\",\"id\":\"msg_011CgP2Swzw8ptggHdz4yMNm\",\"type\":\"message\",\"role\":\"assistant\",\"content\":[{\"type\":\"tool_use\",\"id\":\"toolu_01YASRbf3r6DvzQdp2WBoi5v\",\"name\":\"Bash\",\"input\":{\"command\":\"cd /tmp/gstack-paid-shard-XShYTB/tmp/skill-e2e-ctx-fragment-mF7D6T; export GSTACK_HOME=\\\"$PWD/.gstack-home\\\"; ls bin; B=./bin\\nGSTACK_STATE_ROOT=$($B/gstack-paths --get GSTACK_STATE_ROOT); echo ROOT=$GSTACK_STATE_ROOT\\nSLUG=$($B/gstack-slug --get SLUG 2>/dev/null); echo SLUG=$SLUG\\nCHECKPOINT_DIR=\\\"$GSTACK_STATE_ROOT/projects/$SLUG/checkpoints\\\"; ls -la \\\"$CHECKPOINT_DIR\\\"; find \\\"$GSTACK_HOME\\\" -name \\\"*.md\\\"\",\"description\":\"Locate saved checkpoints\"},\"caller\":{\"type\":\"direct\"}}],\"container\":null,\"stop_reason\":null,\"stop_sequence\":null,\"stop_details\":null,\"usage\":{\"input_tokens\":2,\"cache_creation_input_tokens\":6340,\"cache_read_input_tokens\":18302,\"cache_creation\":{\"ephemeral_5m_input_tokens\":6340,\"ephemeral_1h_input_tokens\":0},\"output_tokens\":8,\"service_tier\":\"standard\",\"inference_geo\":\"global\",\"speed\":\"standard\"},\"input_transformations\":[],\"diagnostics\":null,\"context_management\":null},\"parent_tool_use_id\":null,\"session_id\":\"8889e81b-d4bf-4eba-9ade-cd8805219972\",\"uuid\":\"88f53b0b-92b0-433b-be2e-30a6e9c4f180\",\"timestamp\":\"2026-10-25T13:21:59.368Z\",\"request_id\":\"req_011CgP2SwkZ9Z8jUt6x2i38U\",\"wire_tool_inputs\":{\"toolu_01YASRbf3r6DvzQdp2WBoi5v\":{\"command\":\"cd /tmp/gstack-paid-shard-XShYTB/tmp/skill-e2e-ctx-fragment-mF7D6T; export GSTACK_HOME=\\\"$PWD/.gstack-home\\\"; ls bin; B=./bin\\nGSTACK_STATE_ROOT=$($B/gstack-paths --get GSTACK_STATE_ROOT); echo ROOT=$GSTACK_STATE_ROOT\\nSLUG=$($B/gstack-slug --get SLUG 2>/dev/null); echo SLUG=$SLUG\\nCHECKPOINT_DIR=\\\"$GSTACK_STATE_ROOT/projects/$SLUG/checkpoints\\\"; ls -la \\\"$CHECKPOINT_DIR\\\"; find \\\"$GSTACK_HOME\\\" -name \\\"*.md\\\"\",\"description\":\"Locate saved checkpoints\"}}}",
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+    "{\"type\":\"user\",\"message\":{\"role\":\"user\",\"content\":[{\"tool_use_id\":\"toolu_0148N1vosxsxAic6XBPYrXGQ\",\"type\":\"tool_result\",\"content\":\"== 20260101-120000-alpha-feature.md\\n---\\nstatus: in-progress\\nbranch: feat/alpha\\ntimestamp: 2026-01-01T12:00:00Z\\n---\\n## Working on: alpha feature\\n\\n### Summary\\nAlpha content FRAGMATCH_ALPHA_BUILD\\n== 20260202-120000-middle-payments.md\\n---\\nstatus: in-progress\\nbranch: feat/payments\\ntimestamp: 2026-02-02T12:00:00Z\\n---\\n## Working on: middle payments\\n\\n### Summary\\nPayments content FRAGMATCH_PAYMENTS_BUILD\\n== 20260303-120000-omega-release.md\\n---\\nstatus: in-progress\\nbranch: feat/omega\\ntimestamp: 2026-03-03T12:00:00Z\\n---\\n## Working on: omega release\\n\\n### Summary\\nOmega content FRAGMATCH_OMEGA_BUILD\",\"is_error\":false}]},\"parent_tool_use_id\":null,\"session_id\":\"8889e81b-d4bf-4eba-9ade-cd8805219972\",\"uuid\":\"686ae24d-a3eb-4707-ae3b-330574244652\",\"timestamp\":\"2026-10-25T13:22:01.697Z\",\"tool_use_result\":{\"stdout\":\"== 20260101-120000-alpha-feature.md\\n---\\nstatus: in-progress\\nbranch: feat/alpha\\ntimestamp: 2026-01-01T12:00:00Z\\n---\\n## Working on: alpha feature\\n\\n### Summary\\nAlpha content FRAGMATCH_ALPHA_BUILD\\n== 20260202-120000-middle-payments.md\\n---\\nstatus: in-progress\\nbranch: feat/payments\\ntimestamp: 2026-02-02T12:00:00Z\\n---\\n## Working on: middle payments\\n\\n### Summary\\nPayments content FRAGMATCH_PAYMENTS_BUILD\\n== 20260303-120000-omega-release.md\\n---\\nstatus: in-progress\\nbranch: feat/omega\\ntimestamp: 2026-03-03T12:00:00Z\\n---\\n## Working on: omega release\\n\\n### Summary\\nOmega content FRAGMATCH_OMEGA_BUILD\",\"stderr\":\"\",\"interrupted\":false,\"isImage\":false,\"noOutputExpected\":false}}",
+    "{\"type\":\"assistant\",\"message\":{\"model\":\"claude-opus-5-5\",\"id\":\"msg_011CgP2TNGCLmG6DD1SMJXr4\",\"type\":\"message\",\"role\":\"assistant\",\"content\":[{\"type\":\"text\",\"text\":\"I loaded the checkpoint matching \\\"payments\\\": `20260202-120000-middle-payments.md`. Three checkpoints were saved in this project (alpha-feature, middle-payments, omega-release), and only this one has \\\"payments\\\" in its title. Omega-release is newer, but you asked for this one by name.\\n\\n```\\nRESUMING CONTEXT\\n════════════════════════════════════════\\nTitle:       middle payments\\nBranch:      feat/payments\\nSaved:       2026-02-02 12:00:00 UTC\\nDuration:    (not recorded)\\nStatus:      in-progress\\n════════════════════════════════════════\\n\\n### Summary\\nPayments content FRAGMATCH_PAYMENTS_BUILD\\n\\n### Remaining Work\\n(none recorded)\\n\\n### Notes\\n(none recorded)\\n```\\n\\n- **Branch:** this context was saved on `feat/payments`, but you're on `main`. You may want to switch branches before continuing.\\n- **Project check:** the checkpoint has no project identity stamp. That's fine here, because no other project has saved checkpoints in this folder.\\n\\nI didn't change any code, and I skipped the usual follow-up question as you asked. Your options are to keep working on this context, see the full file (it's short and shown above in full), or stop here.\"}],\"container\":null,\"stop_reason\":null,\"stop_sequence\":null,\"stop_details\":null,\"usage\":{\"input_tokens\":2,\"cache_creation_input_tokens\":635,\"cache_read_input_tokens\":25740,\"cache_creation\":{\"ephemeral_5m_input_tokens\":635,\"ephemeral_1h_input_tokens\":0},\"output_tokens\":2,\"service_tier\":\"standard\",\"inference_geo\":\"global\",\"speed\":\"standard\"},\"input_transformations\":[],\"diagnostics\":null,\"context_management\":null},\"parent_tool_use_id\":null,\"session_id\":\"8889e81b-d4bf-4eba-9ade-cd8805219972\",\"uuid\":\"70979650-0199-44e3-956e-0824d1de507a\",\"timestamp\":\"2026-10-25T13:22:06.359Z\",\"request_id\":\"req_011CgP2TN24xUJz1E2rmAPb1\"}",
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+    "{\"type\":\"user\",\"message\":{\"role\":\"user\",\"content\":[{\"type\":\"tool_result\",\"tool_use_id\":\"toolu_01X9nJt9XVFgAKfbeHTY7jhD\",\"content\":\"Launching skill: context-restore\"}]},\"parent_tool_use_id\":null,\"session_id\":\"6d684089-4cb5-4016-bc86-203a9a8cdab3\",\"uuid\":\"376841c6-0fe2-417f-8da9-5d79c52f0694\",\"timestamp\":\"2026-10-25T13:21:56.247Z\",\"tool_use_result\":{\"success\":true,\"commandName\":\"context-restore\",\"allowedTools\":[\"Bash\",\"Read\",\"Glob\",\"Grep\",\"AskUserQuestion\"]}}",
+    "{\"type\":\"assistant\",\"message\":{\"model\":\"claude-opus-5-5\",\"id\":\"msg_011CgP2Sy7Apg39RghKe7nhs\",\"type\":\"message\",\"role\":\"assistant\",\"content\":[{\"type\":\"tool_use\",\"id\":\"toolu_016oZY36mo3ibs1cL3rNt82T\",\"name\":\"Bash\",\"input\":{\"command\":\"cd /tmp/gstack-paid-shard-V2G2le/tmp/skill-e2e-ctx-fragment-GZoJH5; ls bin; export GSTACK_HOME=\\\"$PWD/.gstack-home\\\"; B=./bin\\nGSTACK_STATE_ROOT=$($B/gstack-paths --get GSTACK_STATE_ROOT 2>&1); echo \\\"ROOT=$GSTACK_STATE_ROOT\\\"\\nSLUG=$($B/gstack-slug --get SLUG 2>&1); echo \\\"SLUG=$SLUG\\\"\\nfind .gstack-home -name \\\"*.md\\\" | sort -r\",\"description\":\"Locate gstack state and checkpoints\"},\"caller\":{\"type\":\"direct\"}}],\"container\":null,\"stop_reason\":null,\"stop_sequence\":null,\"stop_details\":null,\"usage\":{\"input_tokens\":2,\"cache_creation_input_tokens\":6340,\"cache_read_input_tokens\":18302,\"cache_creation\":{\"ephemeral_5m_input_tokens\":6340,\"ephemeral_1h_input_tokens\":0},\"output_tokens\":8,\"service_tier\":\"standard\",\"inference_geo\":\"global\",\"speed\":\"standard\"},\"input_transformations\":[],\"diagnostics\":null,\"context_management\":null},\"parent_tool_use_id\":null,\"session_id\":\"6d684089-4cb5-4016-bc86-203a9a8cdab3\",\"uuid\":\"46203839-ca20-4fe1-a98b-d965e965f665\",\"timestamp\":\"2026-10-25T13:22:00.005Z\",\"request_id\":\"req_011CgP2SxnaBEsoXQB2CY6kN\",\"wire_tool_inputs\":{\"toolu_016oZY36mo3ibs1cL3rNt82T\":{\"command\":\"cd /tmp/gstack-paid-shard-V2G2le/tmp/skill-e2e-ctx-fragment-GZoJH5; ls bin; export GSTACK_HOME=\\\"$PWD/.gstack-home\\\"; B=./bin\\nGSTACK_STATE_ROOT=$($B/gstack-paths --get GSTACK_STATE_ROOT 2>&1); echo \\\"ROOT=$GSTACK_STATE_ROOT\\\"\\nSLUG=$($B/gstack-slug --get SLUG 2>&1); echo \\\"SLUG=$SLUG\\\"\\nfind .gstack-home -name \\\"*.md\\\" | sort -r\",\"description\":\"Locate gstack state and checkpoints\"}}}",
+    "{\"type\":\"user\",\"message\":{\"role\":\"user\",\"content\":[{\"tool_use_id\":\"toolu_016oZY36mo3ibs1cL3rNt82T\",\"type\":\"tool_result\",\"content\":\"gstack-config\\ngstack-learnings-log\\ngstack-learnings-search\\ngstack-paths\\ngstack-remote-identity.sh\\ngstack-repo-mode\\ngstack-slug\\ngstack-state-root.sh\\ngstack-timeline-log\\ngstack-timeline-read\\ngstack-update-check\\nROOT=/tmp/gstack-paid-shard-V2G2le/tmp/skill-e2e-ctx-fragment-GZoJH5/.gstack-home\\nSLUG=skill-e2e-ctx-fragment-GZoJH5\\n.gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints/20260303-120000-omega-release.md\\n.gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints/20260202-120000-middle-payments.md\\n.gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints/20260101-120000-alpha-feature.md\",\"is_error\":false}]},\"parent_tool_use_id\":null,\"session_id\":\"6d684089-4cb5-4016-bc86-203a9a8cdab3\",\"uuid\":\"d7748b04-b48b-498b-89e5-ce4df4e6d58c\",\"timestamp\":\"2026-10-25T13:22:00.921Z\",\"tool_use_result\":{\"stdout\":\"gstack-config\\ngstack-learnings-log\\ngstack-learnings-search\\ngstack-paths\\ngstack-remote-identity.sh\\ngstack-repo-mode\\ngstack-slug\\ngstack-state-root.sh\\ngstack-timeline-log\\ngstack-timeline-read\\ngstack-update-check\\nROOT=/tmp/gstack-paid-shard-V2G2le/tmp/skill-e2e-ctx-fragment-GZoJH5/.gstack-home\\nSLUG=skill-e2e-ctx-fragment-GZoJH5\\n.gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints/20260303-120000-omega-release.md\\n.gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints/20260202-120000-middle-payments.md\\n.gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints/20260101-120000-alpha-feature.md\",\"stderr\":\"\",\"interrupted\":false,\"isImage\":false,\"noOutputExpected\":false,\"bashEditDiff\":{\"files\":[{\"filePath\":\"/tmp/gstack-paid-shard-V2G2le/tmp/skill-e2e-ctx-fragment-GZoJH5/.gstack-home/slug-cache/_tmp_gstack-paid-shard-V2G2le_tmp_skill-e2e-ctx-fragment-GZoJH5\",\"hunks\":[{\"oldStart\":0,\"oldLines\":0,\"newStart\":1,\"newLines\":1,\"lines\":[\"+v2:skill-e2e-ctx-fragment-GZoJH5\"]}],\"created\":true},{\"filePath\":\"/tmp/gstack-paid-shard-V2G2le/tmp/skill-e2e-ctx-fragment-GZoJH5/.gstack-home/slug-cache/_tmp_gstack-paid-shard-V2G2le_tmp_skill-e2e-ctx-fragment-GZoJH5_.git\",\"hunks\":[{\"oldStart\":0,\"oldLines\":0,\"newStart\":1,\"newLines\":1,\"lines\":[\"+v2:skill-e2e-ctx-fragment-GZoJH5\"]}],\"created\":true}],\"moreFiles\":0,\"changedFiles\":[\"/tmp/gstack-paid-shard-V2G2le/tmp/skill-e2e-ctx-fragment-GZoJH5/.gstack-home/slug-cache/_tmp_gstack-paid-shard-V2G2le_tmp_skill-e2e-ctx-fragment-GZoJH5\",\"/tmp/gstack-paid-shard-V2G2le/tmp/skill-e2e-ctx-fragment-GZoJH5/.gstack-home/slug-cache/_tmp_gstack-paid-shard-V2G2le_tmp_skill-e2e-ctx-fragment-GZoJH5_.git\"]}}}",
+    "{\"type\":\"assistant\",\"message\":{\"model\":\"claude-opus-5-5\",\"id\":\"msg_011CgP2TJxWctw7y2Vz5qBJH\",\"type\":\"message\",\"role\":\"assistant\",\"content\":[{\"type\":\"tool_use\",\"id\":\"toolu_01FMDVzkCc6y3vknp52LsMBF\",\"name\":\"Bash\",\"input\":{\"command\":\"cd /tmp/gstack-paid-shard-V2G2le/tmp/skill-e2e-ctx-fragment-GZoJH5; export GSTACK_HOME=\\\"$PWD/.gstack-home\\\"; D=.gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints\\nls $D/*.md | ./bin/gstack-slug --classify-checkpoints 2>&1; echo ---; cat $D/20260202-120000-middle-payments.md; echo ---; head -12 $D/20260303-120000-omega-release.md $D/20260101-120000-alpha-feature.md\",\"description\":\"Classify checkpoints and read payments file\"},\"caller\":{\"type\":\"direct\"}}],\"container\":null,\"stop_reason\":null,\"stop_sequence\":null,\"stop_details\":null,\"usage\":{\"input_tokens\":2,\"cache_creation_input_tokens\":718,\"cache_read_input_tokens\":24642,\"cache_creation\":{\"ephemeral_5m_input_tokens\":718,\"ephemeral_1h_input_tokens\":0},\"output_tokens\":16,\"service_tier\":\"standard\",\"inference_geo\":\"global\",\"speed\":\"standard\"},\"input_transformations\":[],\"diagnostics\":null,\"context_management\":null},\"parent_tool_use_id\":null,\"session_id\":\"6d684089-4cb5-4016-bc86-203a9a8cdab3\",\"uuid\":\"bf17bfed-5ea2-42c9-8b0d-df4adf7e20ff\",\"timestamp\":\"2026-10-25T13:22:03.980Z\",\"request_id\":\"req_011CgP2TJg9vKd8HjaMC2abX\",\"wire_tool_inputs\":{\"toolu_01FMDVzkCc6y3vknp52LsMBF\":{\"command\":\"cd /tmp/gstack-paid-shard-V2G2le/tmp/skill-e2e-ctx-fragment-GZoJH5; export GSTACK_HOME=\\\"$PWD/.gstack-home\\\"; D=.gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints\\nls $D/*.md | ./bin/gstack-slug --classify-checkpoints 2>&1; echo ---; cat $D/20260202-120000-middle-payments.md; echo ---; head -12 $D/20260303-120000-omega-release.md $D/20260101-120000-alpha-feature.md\",\"description\":\"Classify checkpoints and read payments file\"}}}",
+    "{\"type\":\"user\",\"message\":{\"role\":\"user\",\"content\":[{\"tool_use_id\":\"toolu_01FMDVzkCc6y3vknp52LsMBF\",\"type\":\"tool_result\",\"content\":\"unstamped\\t.gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints/20260101-120000-alpha-feature.md\\nunstamped\\t.gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints/20260202-120000-middle-payments.md\\nunstamped\\t.gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints/20260303-120000-omega-release.md\\n---\\n---\\nstatus: in-progress\\nbranch: feat/payments\\ntimestamp: 2026-02-02T12:00:00Z\\n---\\n## Working on: middle payments\\n\\n### Summary\\nPayments content FRAGMATCH_PAYMENTS_BUILD\\n---\\n==> .gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints/20260303-120000-omega-release.md <==\\n---\\nstatus: in-progress\\nbranch: feat/omega\\ntimestamp: 2026-03-03T12:00:00Z\\n---\\n## Working on: omega release\\n\\n### Summary\\nOmega content FRAGMATCH_OMEGA_BUILD\\n\\n==> .gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints/20260101-120000-alpha-feature.md <==\\n---\\nstatus: in-progress\\nbranch: feat/alpha\\ntimestamp: 2026-01-01T12:00:00Z\\n---\\n## Working on: alpha feature\\n\\n### Summary\\nAlpha content FRAGMATCH_ALPHA_BUILD\",\"is_error\":false}]},\"parent_tool_use_id\":null,\"session_id\":\"6d684089-4cb5-4016-bc86-203a9a8cdab3\",\"uuid\":\"21ec78ab-abbc-4ea3-8ba6-544d6b05fc91\",\"timestamp\":\"2026-10-25T13:22:04.223Z\",\"tool_use_result\":{\"stdout\":\"unstamped\\t.gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints/20260101-120000-alpha-feature.md\\nunstamped\\t.gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints/20260202-120000-middle-payments.md\\nunstamped\\t.gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints/20260303-120000-omega-release.md\\n---\\n---\\nstatus: in-progress\\nbranch: feat/payments\\ntimestamp: 2026-02-02T12:00:00Z\\n---\\n## Working on: middle payments\\n\\n### Summary\\nPayments content FRAGMATCH_PAYMENTS_BUILD\\n---\\n==> .gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints/20260303-120000-omega-release.md <==\\n---\\nstatus: in-progress\\nbranch: feat/omega\\ntimestamp: 2026-03-03T12:00:00Z\\n---\\n## Working on: omega release\\n\\n### Summary\\nOmega content FRAGMATCH_OMEGA_BUILD\\n\\n==> .gstack-home/projects/skill-e2e-ctx-fragment-GZoJH5/checkpoints/20260101-120000-alpha-feature.md <==\\n---\\nstatus: in-progress\\nbranch: feat/alpha\\ntimestamp: 2026-01-01T12:00:00Z\\n---\\n## Working on: alpha feature\\n\\n### Summary\\nAlpha content FRAGMATCH_ALPHA_BUILD\",\"stderr\":\"\",\"interrupted\":false,\"isImage\":false,\"noOutputExpected\":false}}",
+    "{\"type\":\"assistant\",\"message\":{\"model\":\"claude-opus-5-5\",\"id\":\"msg_011CgP2TZ93aTmrLHgHkg2Je\",\"type\":\"message\",\"role\":\"assistant\",\"content\":[{\"type\":\"text\",\"text\":\"I loaded the checkpoint `20260202-120000-middle-payments.md`. It's the only one of the three saved checkpoints whose title contains \\\"payments\\\". It isn't the newest: `omega-release` (2026-03-03) is, so I chose this one because its title matched, not because it was the latest.\\n\\n```\\nRESUMING CONTEXT\\n════════════════════════════════════════\\nTitle:       middle payments\\nBranch:      feat/payments\\nSaved:       Feb 2, 2026, 12:00 UTC\\nDuration:    not recorded\\nStatus:      in-progress\\n════════════════════════════════════════\\n\\n### Summary\\nPayments content FRAGMATCH_PAYMENTS_BUILD\\n\\n### Remaining Work\\nNone recorded in the checkpoint.\\n\\n### Notes\\nNone recorded.\\n```\\n\\n- **Branch:** this was saved on `feat/payments`, but you're on `main`. You may want to switch branches before continuing.\\n- **Project check:** none of the checkpoints have a project identity stamp, but none belong to another project, so this one counts as this project's.\\n- **Other checkpoints:** `alpha feature` on `feat/alpha` (2026-01-01) and `omega release` on `feat/omega` (2026-03-03).\\n\\nYou asked me not to use AskUserQuestion, so I skipped the skill's usual \\\"what next?\\\" prompt. I made no code changes; restoring only reads the saved files.\"}],\"container\":null,\"stop_reason\":null,\"stop_sequence\":null,\"stop_details\":null,\"usage\":{\"input_tokens\":2,\"cache_creation_input_tokens\":859,\"cache_read_input_tokens\":25360,\"cache_creation\":{\"ephemeral_5m_input_tokens\":859,\"ephemeral_1h_input_tokens\":0},\"output_tokens\":8,\"service_tier\":\"standard\",\"inference_geo\":\"global\",\"speed\":\"standard\"},\"input_transformations\":[],\"diagnostics\":null,\"context_management\":null},\"parent_tool_use_id\":null,\"session_id\":\"6d684089-4cb5-4016-bc86-203a9a8cdab3\",\"uuid\":\"e8864f23-50e9-4a59-ab4a-b984590d2559\",\"timestamp\":\"2026-10-25T13:22:09.545Z\",\"request_id\":\"req_011CgP2TYqh2XjMw3Nc9cuQu\"}",
+    "{\"duration_api_ms\":14272,\"stop_reason\":\"end_turn\",\"session_id\":\"6d684089-4cb5-4016-bc86-203a9a8cdab3\",\"total_cost_usd\":0.1112262,\"usage\":{\"input_tokens\":8,\"cache_creation_input_tokens\":14177,\"cache_read_input_tokens\":80346,\"output_tokens\":1212,\"output_tokens_details\":{\"thinking_tokens\":88},\"server_tool_use\":{\"web_search_requests\":0,\"web_fetch_requests\":0},\"service_tier\":\"standard\",\"cache_creation\":{\"ephemeral_1h_input_tokens\":0,\"ephemeral_5m_input_tokens\":14177},\"inference_geo\":\"global\",\"iterations\":[{\"input_tokens\":2,\"output_tokens\":501,\"cache_read_input_tokens\":25360,\"cache_creation_input_tokens\":859,\"cache_creation\":{\"ephemeral_5m_input_tokens\":859,\"ephemeral_1h_input_tokens\":0},\"type\":\"message\"}],\"speed\":\"standard\",\"fallback_credit\":null},\"modelUsage\":{\"claude-opus-5-5\":{\"inputTokens\":8,\"outputTokens\":1212,\"cacheReadInputTokens\":80346,\"cacheCreationInputTokens\":14177,\"webSearchRequests\":0,\"costUSD\":0.1112262,\"contextWindow\":1000000,\"maxOutputTokens\":128000,\"thinkingTokens\":88,\"canonicalModel\":\"claude-opus-5-5\",\"provider\":\"firstParty\",\"costBasis\":\"list\"}},\"permission_denials\":[],\"terminal_reason\":\"completed\",\"fast_mode_state\":\"off\",\"fast_mode_disabled_reason\":\"sdk_opt_in_required\",\"subagent_stats\":{\"spawned\":0,\"requested\":{\"background\":0,\"foreground\":0,\"unset\":0},\"started_in_background\":0,\"max_depth\":0,\"spawned_by_subagents\":0,\"completed\":0,\"failed\":0,\"killed\":{\"parent\":0,\"user\":0,\"system\":0},\"refused\":{\"depth_limit\":0,\"concurrency_limit\":0,\"budget\":0},\"by_type\":{}},\"safety_stops\":0,\"is_error\":false,\"num_turns\":5,\"subtype\":\"success\",\"api_error_status\":null,\"result\":\"I loaded the checkpoint `20260202-120000-middle-payments.md`. It's the only one of the three saved checkpoints whose title contains \\\"payments\\\". It isn't the newest: `omega-release` (2026-03-03) is, so I chose this one because its title matched, not because it was the latest.\\n\\n```\\nRESUMING CONTEXT\\n════════════════════════════════════════\\nTitle:       middle payments\\nBranch:      feat/payments\\nSaved:       Feb 2, 2026, 12:00 UTC\\nDuration:    not recorded\\nStatus:      in-progress\\n════════════════════════════════════════\\n\\n### Summary\\nPayments content FRAGMATCH_PAYMENTS_BUILD\\n\\n### Remaining Work\\nNone recorded in the checkpoint.\\n\\n### Notes\\nNone recorded.\\n```\\n\\n- **Branch:** this was saved on `feat/payments`, but you're on `main`. You may want to switch branches before continuing.\\n- **Project check:** none of the checkpoints have a project identity stamp, but none belong to another project, so this one counts as this project's.\\n- **Other checkpoints:** `alpha feature` on `feat/alpha` (2026-01-01) and `omega release` on `feat/omega` (2026-03-03).\\n\\nYou asked me not to use AskUserQuestion, so I skipped the skill's usual \\\"what next?\\\" prompt. I made no code changes; restoring only reads the saved files.\",\"ttft_ms\":2268,\"type\":\"result\",\"duration_ms\":15609,\"uuid\":\"39ae4b99-23c4-4444-b94e-4cf48961a993\",\"ttft_stream_ms\":1914,\"time_to_request_ms\":192,\"first_content_frame_ms\":1915,\"queued_turn_count\":0,\"result_index\":0}"
+   ]
+  }
+ ]
+}
@@ -336,10 +336,12 @@ describe.skipIf(process.platform === 'win32')('gstack-ff-update: the install-sco
  test('the heartbeat and its sleeper are reaped when the bin exits', () => {
    const fx = makeFixture();
    release(fx, { 'notes.txt': 'top UPSTREAM\nmiddle\nbottom\n' });
-    const before = execFileSync('bash', ['-c', 'pgrep -f "^sleep 300$" | wc -l'], { encoding: 'utf8', timeout: 30_000 }).trim();
-    expect(ff(fx).status).toBe(0);
-    const after = execFileSync('bash', ['-c', 'sleep 0.3; pgrep -f "^sleep 300$" | wc -l'], { encoding: 'utf8', timeout: 30_000 }).trim();
-    expect(after).toBe(before);
+    const beat = String(3000 + (process.pid % 997));
+    const sleepers = (delay = '') => execFileSync('bash', ['-c', `${delay}pgrep -f "^sleep ${beat}$" | wc -l`], { encoding: 'utf8', timeout: 30_000 }).trim();
+    const before = sleepers();
+    expect(before).toBe('0');
+    expect(ff(fx, 'origin/main', { GSTACK_FF_HEARTBEAT_SECONDS: beat }).status).toBe(0);
+    expect(sleepers('sleep 0.3; ')).toBe(before);
  });
 });

@@ -918,7 +918,7 @@ describe('gstack-skill-start install admission', () => {
    const elsewhere = verdict(gh, {}, path.join(gh, 'named.json'));
    fs.rmSync(path.join(gh, 'install-verdicts'), { recursive: true, force: true });
    expect(start(gh, 'autoplan', { ...capy, GSTACK_INSTALL_VERDICT: elsewhere }).status).toBe(0);
-  });
+  }, 20_000);

  test('an installed runtime root follows its .source-path to the source checkout for the verdict and HEAD', () => {
    const gh = scratch();
@@ -0,0 +1,34 @@
+/**
+ * Verdict for the context-restore-fragment-match E2E: which checkpoint did the
+ * agent restore? The evidence is the agent's own report (top-level assistant
+ * text plus the final result), never tool output. Restore has to inspect the
+ * candidates to find the one whose title matches, so every checkpoint body can
+ * appear in Bash or Read output without being the restored context.
+ */
+export interface FragmentRestoreRun {
+  output?: string;
+  transcript?: any[];
+}
+
+export function agentReport(result: FragmentRestoreRun): string {
+  const parts: string[] = [];
+  for (const event of result.transcript || []) {
+    if (event?.type !== 'assistant' || event.parent_tool_use_id) continue;
+    for (const block of event.message?.content || []) {
+      if (block?.type === 'text' && typeof block.text === 'string') parts.push(block.text);
+    }
+  }
+  if (result.output) parts.push(result.output);
+  return parts.join('\n');
+}
+
+export function fragmentRestoreVerdict(
+  result: FragmentRestoreRun,
+  markers: { restored: string; others: string[] },
+): { loadedTarget: boolean; didNotLoadOthers: boolean } {
+  const report = agentReport(result);
+  return {
+    loadedTarget: report.includes(markers.restored),
+    didNotLoadOthers: markers.others.every((marker) => !report.includes(marker)),
+  };
+}
@@ -60,6 +60,7 @@ export const FREE_FIXTURES: Readonly<Record<string, readonly string[]>> = {
  'test/fixtures/codex-sandbox/**': ['test/codex-eval-recording.test.ts', 'test/codex-model-probe.test.ts', 'test/outside-review-result.test.ts', 'test/outside-voice-invocation.test.ts'],
  'test/fixtures/context-bill/**': ['test/context-bill.test.ts', 'test/context-budget-ratchet.test.ts'],
  'test/fixtures/context-budget.json': ['test/helpers/capture-context-budget.ts', 'test/test-value-bar.test.ts'],
+  'test/fixtures/context-restore-fragment-match-captures.json': ['test/context-restore-fragment-verdict.test.ts'],
  'test/fixtures/coverage-audit-cd-chain.json': ['test/coverage-audit-evidence.test.ts'],
  'test/fixtures/coverage-audit-parallel-column.json': ['test/coverage-audit-evidence.test.ts'],
  'test/fixtures/coverage-audit-separator-collision.json': ['test/coverage-audit-evidence.test.ts'],
@@ -187,6 +187,13 @@ export async function callJudge<T>(
    .filter(block => block.type === 'text')
    .map(block => block.text)
    .join('\n');
+  const parseJudgeText = (json: string): T => {
+    try {
+      return JSON.parse(json) as T;
+    } catch (error) {
+      throw new SyntaxError(`Judge response is not valid JSON (stop_reason=${response.stop_reason}, ${json.length} chars; full text in llm-judge-response-parse-error): ${error instanceof Error ? error.message : String(error)}`);
+    }
+  };
  try {
    if (response.stop_reason === 'max_tokens') {
      throw new Error(`Judge response truncated at max_tokens=${maxTokens} (model=${resolvedModel})`);
@@ -194,11 +201,11 @@ export async function callJudge<T>(
    if (response.stop_reason === 'refusal') throw new JudgeRefusalError(response);
    if (opts?.jsonSchema !== undefined) {
      if (response.stop_reason !== 'end_turn') throw new Error(`Structured judge did not complete: stop_reason=${response.stop_reason}`);
-      return JSON.parse(text) as T;
+      return parseJudgeText(text);
    }
    const jsonMatch = text.match(/\{[\s\S]*\}/);
    if (!jsonMatch) throw new Error(`Judge returned non-JSON: ${text.slice(0, 200)}`);
-    return JSON.parse(jsonMatch[0]) as T;
+    return parseJudgeText(jsonMatch[0]);
  } catch (error) {
    // The canonical full stderr spool retains this public response even when
    // parsing fails before a caller can record a judgment. Never copy content
@@ -682,15 +682,15 @@ export const E2E_TOUCHFILES: Record<string, string[]> = {
  // test/skill-e2e-context-skills.test.ts. These are periodic-tier because
  // each one spawns claude -p and costs ~$0.20-$0.40. Collectively they
  // verify the thing the /checkpoint → /context-save rename was for.
-  'context-save-routing':                  [ 'context-save/**', 'scripts/resolvers/preamble.ts', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts'],
-  'context-save-then-restore-roundtrip':   ['bin/gstack-state-root.sh', 'lib/state-root.ts', 'context-save/**', 'context-restore/**', 'bin/gstack-slug', 'bin/gstack-remote-identity.sh', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts'],
-  'context-restore-fragment-match':        [ 'context-restore/**', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts'],
-  'context-restore-provenance-order':      ['context-save/**', 'context-restore/**', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts'],
-  'context-restore-empty-state':           [ 'context-restore/**', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts'],
-  'context-restore-list-delegates':        [ 'context-restore/**', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts'],
-  'context-restore-legacy-compat':         [ 'context-restore/**', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts'],
-  'context-save-list-current-branch':      [ 'context-save/**', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts'],
-  'context-save-list-all-branches':        [ 'context-save/**', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts'],
+  'context-save-routing':                  [ 'context-save/**', 'scripts/resolvers/preamble.ts', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts', 'test/helpers/context-restore-fragment.ts'],
+  'context-save-then-restore-roundtrip':   ['bin/gstack-state-root.sh', 'lib/state-root.ts', 'context-save/**', 'context-restore/**', 'bin/gstack-slug', 'bin/gstack-remote-identity.sh', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts', 'test/helpers/context-restore-fragment.ts'],
+  'context-restore-fragment-match':        [ 'context-restore/**', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts', 'test/helpers/context-restore-fragment.ts'],
+  'context-restore-provenance-order':      ['context-save/**', 'context-restore/**', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts', 'test/helpers/context-restore-fragment.ts'],
+  'context-restore-empty-state':           [ 'context-restore/**', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts', 'test/helpers/context-restore-fragment.ts'],
+  'context-restore-list-delegates':        [ 'context-restore/**', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts', 'test/helpers/context-restore-fragment.ts'],
+  'context-restore-legacy-compat':         [ 'context-restore/**', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts', 'test/helpers/context-restore-fragment.ts'],
+  'context-save-list-current-branch':      [ 'context-save/**', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts', 'test/helpers/context-restore-fragment.ts'],
+  'context-save-list-all-branches':        [ 'context-save/**', 'test/skill-e2e-context-skills.test.ts', 'bin/gstack-skill-start', 'test/helpers/shipped-skill-routing.ts', 'test/helpers/context-restore-fragment.ts'],

  // Document-release
  'document-release': [ 'test/helpers/outside-voice-evidence.ts', 'bin/gstack-version-bump', 'document-release/**', 'test/skill-e2e-workflow.test.ts', 'test/fixtures/coverage-audit-fixture.ts', 'test/helpers/coverage-audit.ts', 'test/helpers/coverage-audit-evidence.ts', 'test/helpers/office-hours-attempt.ts'],
@@ -218,6 +218,22 @@ describe('frontier Claude judge compatibility', () => {
    expect(create).toHaveBeenCalledTimes(1);
  });

+  // Train-4 gate 40173759210 slice 4 attempt 1: Sonnet's free-form cookie workflow judgment left the quotes around "one `--domain` per run" unescaped.
+  const COOKIE_GATE_UNESCAPED_REPLY = "{\"clarity\": 4, \"completeness\": 4, \"actionability\": 4, \"reasoning\": \"The workflow is well ordered: Aside check, then consent questions before any `$B` command, then daemon prep, import, and an honest three-line report. It states the boundaries precisely: profile directory vs display name, `--all` exclusions, Chromium-only reset with its non-rollback caveat, and the rule that copied cookies, counts, and HTTP 200 never prove sign-in. The error and failure-reason tables cover recovery and platform limits. Gaps and ambiguities remain. (1) Step 3.1 sets env vars and runs `$B stop` before `$B status` and `goto`, which is workable but slightly awkward. (2) Step 2 says to ask everything before any `$B` command, yet it also needs the Aside probe, which comes earlier in step 1 and so is an implicit exception. (3) It is unclear how the picker or direct import maps the receipt's states to the three report lines, such as `Imported: <count>` for partial or failed results, or the storage-reset line when the picker is used. (4) The `--all` flow is not given a command example or a step. (5) For the multiple-domain case the instruction is \"one `--domain` per run\", but it does not say how to handle the target tab or the receipt across runs. (6) `decryption_failed` says to close the source browser, which sits in tension with the Chrome 136+ note, though it is not contradictory. (7) The `handoff` path requires a display, and the fallback when none is available is not defined beyond 'offer only with a display'. (8) The Windows example's `$B reload` without verification is fine, but the unverified case is not tied to the report. Overall it is strong with a few minor missing decisions.\"}";
+
+  test('the captured cookie judge reply fails closed and names the judge output, stop reason and retained text', async () => {
+    create.mockResolvedValue({ id: 'msg_011CgNbBNCNcZ2C6WJDCmjgU', model: 'claude-sonnet-5-5', stop_reason: 'end_turn',
+      content: [{ type: 'text', text: COOKIE_GATE_UNESCAPED_REPLY }], usage: { input_tokens: 4521, output_tokens: 572 } } as never);
+    let failure: unknown;
+    try { await callJudge('score the workflow', 'claude-sonnet-5-5'); } catch (error) { failure = error; }
+    expect(failure).toBeInstanceOf(SyntaxError);
+    expect((failure as Error).message).toStartWith(`Judge response is not valid JSON (stop_reason=end_turn, ${COOKIE_GATE_UNESCAPED_REPLY.length} chars; full text in llm-judge-response-parse-error): `);
+    expect(create).toHaveBeenCalledTimes(1);
+    expect(diagnostics).toHaveBeenCalledTimes(1);
+    expect(JSON.parse(diagnostics.mock.calls[0][0])).toMatchObject({ type: 'llm-judge-response-parse-error', stopReason: 'end_turn',
+      textBlocks: [COOKIE_GATE_UNESCAPED_REPLY], error: { name: 'SyntaxError', message: (failure as Error).message } });
+  });
+
  test('a weak structured score still fails the substance bar', async () => {
    create.mockResolvedValue({ stop_reason: 'end_turn', content: [{ type: 'text',
      text: JSON.stringify({ reason_substance: 1, reasoning: 'Boilerplate.' }) }] } as never);
@@ -23,6 +23,7 @@ import {
 } from './helpers/e2e-helpers';
 import { extractSkillBody } from './helpers/skill-fixture';
 import { readShippedSkillRouting } from './helpers/shipped-skill-routing';
+import { fragmentRestoreVerdict } from './helpers/context-restore-fragment';
 import { spawnSync } from 'child_process';
 import * as fs from 'fs';
 import * as path from 'path';
@@ -260,11 +261,14 @@ Do NOT use AskUserQuestion.`,

    logCost('context-restore-fragment-match', result);

-    // Broader surface — agent may stop at Skill call without echoing the
-    // body marker. The payments file's body is in tool outputs (Read/Bash).
-    const out = fullOutputSurface(result);
-    const loadedPayments = out.includes('FRAGMATCH_PAYMENTS_BUILD');
-    const didNotLoadOthers = !out.includes('FRAGMATCH_ALPHA_BUILD') && !out.includes('FRAGMATCH_OMEGA_BUILD');
+    // What was restored is what the agent reports, not what its tools printed:
+    // finding the matching title can cat every checkpoint, so all three bodies
+    // may appear in Bash/Read output. The report must carry the payments body
+    // and no other checkpoint's body.
+    const { loadedTarget: loadedPayments, didNotLoadOthers } = fragmentRestoreVerdict(result, {
+      restored: 'FRAGMATCH_PAYMENTS_BUILD',
+      others: ['FRAGMATCH_ALPHA_BUILD', 'FRAGMATCH_OMEGA_BUILD'],
+    });
    const routedToRestore = skillCalls(result).includes('context-restore');
    const exitOk = ['success', 'error_max_turns'].includes(result.exitReason);

@@ -60,6 +60,7 @@ const BASELINE = [
  'test/codex-carve-fixture.test.ts',
  'test/codex-eval-recording.test.ts',
  'test/codex-resume-flag-semantics.test.ts',
+  'test/context-restore-fragment-verdict.test.ts', // GSTA-91: replays three captured false reds (0/3 on main cb99df4) through the paid context-restore-fragment-match case's fragmentRestoreVerdict
  'test/cookie-workflow-judge-input.test.ts', // slices test/skill-llm-eval.test.ts source (recorded 2026-10 when the ratchet learned paid-source slicing)
  'test/cso-ntfs-fixture.test.ts',
  'test/cso-windows-build-contract.test.ts',