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    "sourcePath": "docs/harness-features-backlog/gaps/harness-adaptation/GAP-HADAPT-004.md",
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    "title": "GAP-HADAPT-004: Harness Fallback Chains",
    "displayName": "GAP-HADAPT-004: Harness Fallback Chains",
    "slug": "docs/harness-features-backlog/gaps/harness-adaptation/gap-hadapt-004",
    "articlePath": "wiki/docs/harness-features-backlog/gaps/harness-adaptation/GAP-HADAPT-004.md",
    "article": "\n# GAP-HADAPT-004: Harness Fallback Chains\n\n| Field | Value |\n|-------|-------|\n| Category | harness-adaptation |\n| Priority | High |\n| Effort | M |\n| Status | Missing |\n\n## Description\nDefine fallback harness sequences. If primary harness fails or is unavailable, automatically try next in chain.\n\n## Current State\nSingle harness per run. Failure = run failure. No fallback.\n\n## Target State\nConfigurable fallback chains per task kind. If primary harness fails, retry with next harness in chain. Fallback configured at run, session, or global level.\n\n## Dependencies\n- [GAP-HADAPT-001](../harness-adaptation/GAP-HADAPT-001.md) -- capability routing for fallback selection\n- [GAP-HADAPT-005](../harness-adaptation/GAP-HADAPT-005.md) -- health monitoring for failure detection\n\n## Key Files\n| Component | Path |\n|-----------|------|\n| Harness invoker | `packages/sdk/src/harness/invoker.ts` |\n| Adapter registry | `packages/sdk/src/harness/registry.ts` |\n\n## Recommendation\nPhase 2 implementation. Define fallback chain configuration. Implement retry with next harness on failure. Log fallback decisions.\n",
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