54 lines
2.1 KiB
Markdown
54 lines
2.1 KiB
Markdown
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# ADR-0004 — Citation recovery boundary
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- **Status:** accepted
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- **Date:** 2026-07-09
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- **Workplan:** ESRC-WP-0004 (T01)
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## Context
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`evidence-source` owns ingestion and representation generation. Citation
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recovery spans stale-selector detection, local quote search, external source
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discovery, and human confirmation — but selector resolution algorithms live in
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`evidence-anchor`, and the `CitationRecoveryAttempt` type vocabulary lives in
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`citation-engine`.
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## Decision
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### Owned by `evidence-source`
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| Capability | Module | Notes |
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| ---------- | ------ | ----- |
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| Re-ingest + re-fingerprint | `src/recovery/re-ingest.ts` | Compare prior vs. fresh `Document.fingerprint`; flag `requiresReanchor` |
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| Local canonical quote search | `src/recovery/local-search.ts` | Search `DocumentRepresentation.canonicalText` |
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| Recovery attempt scaffold | `src/recovery/attempt.ts` | Local record using SharedContracts state vocabulary |
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| Discovery hook interface | `src/recovery/discovery.ts` | Pluggable providers; **no network in core** |
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### Owned elsewhere
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| Capability | Owner |
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| ---------- | ----- |
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| Stale selector detection / resolution order | `evidence-anchor` |
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| `CitationRecoveryAttempt` canonical type | `citation-engine` (future) |
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| Human confirmation UX | `citation-work` / umbrella |
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| External HTTP/API lookup implementations | Deployment-specific providers registered on the hook |
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### Recovery flow
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```text
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CitationClue
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→ createRecoveryAttempt (evidence-source)
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→ local library search via searchCanonicalQuote (evidence-source)
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→ optional SourceDiscoveryHook providers (registered by host)
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→ reIngestAndCompare when fresh bytes arrive (evidence-source)
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→ anchor layer re-resolves selectors when requiresReanchor is true
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```
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`evidence-source` **does not** decide whether a selector is stale. It supplies
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primitives the anchor layer calls after it detects mismatch.
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## Consequences
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- No network coupling in the recovery core.
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- Host apps register discovery providers explicitly (local-first default).
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- Recovery state enum mirrors `wiki/SharedContracts.md` §2.6 locally until the
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engine exports a shared `CitationRecoveryAttempt` type.
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