refactor(automation-runtime): classify skip timeout via ledger reason

[ScriptedAlchemy]

Summary

STOP-REFETCH rebase onto tip d2c9294089 (after #1415 Kiro advisory land). Single commit unchanged in intent.

Migrate skipped_terminal_failure_class from an inline "session_evidence_timed_out" string match to AutomationSkipReasonV1::from_ledger_reason, then keep only the typed SessionEvidenceTimedOut → Timeout mapping. Deletes the internal dual-path literal beside the canonical ledger parser.

Principle

migrate-callers-then-delete-legacy-apis — no shim left.

Test plan

• commitlint from tip base
• CI on tip base after rebase
• Existing scheduler fixture still exercises the ledger sentinel string via the typed parser

  

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Latest commit: 56c451a

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[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-16T09:57:04.174902Z	c1efdfe	Draft marked ready

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[github-actions]

Performance Comparison codex/tracedecay-total-redesign-plan-reopened → cursor/skip-reason-ledger-13ea

Total Elapsed Time: 7.93s → 8.45s (+6.5%)
CPU Baseline: 90.42µs → 90.02µs (-0.4%)
Benchmark ID: index-bench-timing

timing - Execution duration of functions.

+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| Function                                 | Calls                      | Avg                              | P95                              | Total                            | % Total                      |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| tracedecay-index-bench                   | 1 → 1 (+0.0%)              | 7.93s → 8.45s (+6.6%)            | 7.93s → 8.45s (+6.6%)            | 7.93s → 8.45s (+6.6%)            | 100.00% → 100.00% (+0.0%)    |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| domain.canonical.sha256                  | 85787 → 85787 (+0.0%)      | 33.25µs → 34.45µs (+3.6%)        | 103.17µs → 103.61µs (+0.4%)      | 2.85s → 2.96s (+3.9%)            | 35.97% → 34.99% (-2.7%)      |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| code_index.workers.install               | 81 → 81 (+0.0%)            | 31.13ms → 36.36ms (+16.8%)       | 193.33ms → 226.89ms (+17.4%)     | 2.52s → 2.95s (+17.1%)           | 31.80% → 34.87% (+9.7%)      |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| query.artifact.finalization.advance_wake | 28 → 28 (+0.0%)            | 53.41ms → 54.20ms (+1.5%)        | 424.67ms → 433.59ms (+2.1%)      | 1.50s → 1.52s (+1.3%)            | 18.86% → 17.97% (-4.7%)      |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| query.artifact.batch.sqlite              | 5 → 5 (+0.0%)              | 283.18ms → 285.08ms (+0.7%)      | 313.00ms → 313.26ms (+0.1%)      | 1.42s → 1.43s (+0.7%)            | 17.86% → 16.88% (-5.5%)      |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| code_index.build.and_publish             | 2 → 2 (+0.0%)              | 709.74ms → 706.44ms (-0.5%)      | 989.86ms → 983.04ms (-0.7%)      | 1.42s → 1.41s (-0.7%)            | 17.90% → 16.73% (-6.5%)      |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| query.artifact.batch.parallel_prepare    | 5 → 5 (+0.0%)              | 181.78ms → 236.59ms (+30.2%) ⚠️  | 201.59ms → 281.02ms (+39.4%) ⚠️  | 908.90ms → 1.18s (+29.8%) ⚠️     | 11.46% → 14.01% (+22.3%) ⚠️  |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| query.artifact.batch.postings            | 5 → 5 (+0.0%)              | 221.08ms → 220.55ms (-0.2%)      | 248.77ms → 248.77ms (+0.0%)      | 1.11s → 1.10s (-0.9%)            | 13.94% → 13.06% (-6.3%)      |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| domain.canonical.json_bytes              | 206681 → 206681 (+0.0%)    | 4.11µs → 5.29µs (+28.7%) ⚠️      | 4.32µs → 4.33µs (+0.2%)          | 849.85ms → 1.09s (+28.3%) ⚠️     | 10.72% → 12.93% (+20.6%) ⚠️  |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| code_index.extract.parser_artifact       | 276 → 276 (+0.0%)          | 3.82ms → 3.78ms (-1.0%)          | 6.21ms → 6.18ms (-0.5%)          | 1.05s → 1.04s (-1.0%)            | 13.30% → 12.36% (-7.1%)      |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| code_index.restore.file_admit            | 260 → 260 (+0.0%)          | 2.77ms → 3.41ms (+23.1%) ⚠️      | 4.43ms → 5.84ms (+31.8%) ⚠️      | 719.98ms → 887.41ms (+23.3%) ⚠️  | 9.08% → 10.51% (+15.7%)      |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| code_index.build.materialize_full        | 1 → 1 (+0.0%)              | 703.36ms → 695.90ms (-1.1%)      | 703.59ms → 696.25ms (-1.0%)      | 703.36ms → 695.90ms (-1.1%)      | 8.87% → 8.24% (-7.1%)        |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| 🆕 code_index.lexical_source.batch_stage | 0 → 6 (+100.0%) ⚠️         | 0.00ns → 113.56ms (+100.0%) ⚠️   | 0.00ns → 159.65ms (+100.0%) ⚠️   | 0.00ns → 681.35ms (+100.0%) ⚠️   | 0.00% → 8.07% (+100.0%) ⚠️   |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| code_index.collect.materialize_full      | 1 → 1 (+0.0%)              | 686.74ms → 680.09ms (-1.0%)      | 686.82ms → 680.53ms (-0.9%)      | 686.74ms → 680.09ms (-1.0%)      | 8.66% → 8.05% (-7.0%)        |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| query.artifact.batch.postings.ngram_rows | 5 → 5 (+0.0%)              | 124.82ms → 125.08ms (+0.2%)      | 141.56ms → 140.77ms (-0.6%)      | 624.11ms → 625.39ms (+0.2%)      | 7.87% → 7.40% (-6.0%)        |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+
| 🗑️ code_index.build.assemble             | 2 → 0 (-100.0%) 🚀         | 291.61ms → 0.00ns (-100.0%) 🚀   | 299.89ms → 0.00ns (-100.0%) 🚀   | 583.22ms → 0.00ns (-100.0%) 🚀   | 7.35% → 0.00% (-100.0%) 🚀   |
+------------------------------------------+----------------------------+----------------------------------+----------------------------------+----------------------------------+------------------------------+

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