lsm / neokai / 27862598261

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feat: build Forge friction digest for repeated tool failures (#2132)

* feat: build Forge friction digest for repeated tool failures

- Add friction_digest evidence kind and schema migration

- Implement EvolutionTraceEvidenceService.buildFrictionDigest

- Aggregate repeated errors, retry loops, slow calls, verification/permission/tool failures into one high-signal evidence row

- Auto-generate digest when a scoped task completes and trace evidence exists

- Include friction_digest in episode task context

- Add unit tests for aggregation and completion-path creation

* fix: address review feedback on friction digest

- Wrap buildFrictionDigest call in try/catch so conversation-friction enqueue is not blocked

- Count non-test verification failures in verificationFailure bucket

- Count generic/edit tool failures alongside specific buckets instead of all-or-nothing fallback

- Add migration 159 unit test for CHECK widening and idempotency

- Revert collectTasks allowlist entry; digest already appears in Selected evidence prompt dump

- Update tests for new aggregation semantics

* fix: handle friction digest review follow-ups

- Create friction digest evidence during manual task evidence attachment when trace evidence exists

- Treat friction_digest as task-backed evidence for episode and preflight contexts

- Count friction_digest as task context in evidence quality scoring

- Add tests for manual attachment and digest-only task context

* fix: add friction digest migration backfill

- Add migration 160 to widen existing databases that already ran migration 159

- Cover verification_triage-only schema upgrade path with a migration test

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