feat(web): render conclusion provenance from Honcho 3.2.0 source_ids

[twistedgrim]

Summary

Honcho v3.2.0 serves conclusion attribution natively (source_ids, times_derived). The premises/reasoning_tree fields this UI has been waiting on were never shipped upstream, so the dream premise tree has always rendered empty. This change makes the tree real against Honcho >= 3.2.0 while preserving graceful behavior on older deployments.

Changes

API schema

• Regenerated src/api/schema.d.ts from live Honcho 3.2.0 openapi.json — adds level, source_ids, times_derived to Conclusion, and the typed GET /v3/workspaces/{workspace_id}/conclusions/{conclusion_id} route
• The 3.2.0 schema inlines $defs blocks in the two /chat responses which openapi-typescript cannot resolve; they are hoisted into components/schemas during regeneration

Premise tree (src/lib/dreams.ts)

• conclusionSourceIds(): native source_ids first, legacy premises alias as fallback
• hasPremiseTree(): cheap pre-check the detail view uses to decide whether to offer expansion
• expandPremiseTree(): children now source from source_ids; reasoning_tree retains precedence (harmless, nothing serves it, but avoids regressing any deployment that piped it in)
• ExtendedConclusion re-declares level via Omit + widened string | null — Honcho may add levels at any time and unknown levels must classify as explicit, not drop rows

Data flow

• DreamList builds a workspace-wide premise index and passes it to DreamDetail: a deductive conclusion's source_ids frequently point at explicit conclusions clustered into a different dream, which the old dream-local index could never resolve
• Cross-dream premises missing from the loaded pages still show the existing "premise not in current page" node — lazy per-id fetching is a natural follow-up now that the single-conclusion GET route is typed

New required request fields (schema fallout)

• dialectic chat calls send include_evidence: false
• schedule_dream sends rebuild: false

Test environment

• node 26 ships an experimental localStorage that is undefined without --localstorage-file; that undefined bleeds through the environment compat layer and clobbers jsdom's Storage, breaking the entire suite (115 failures on main before any of my changes). setup.ts now installs an in-memory Storage shim when real storage is absent, and vitest.config.ts pins the jsdom URL as an opaque-origin guard

Verification

• pnpm typecheck clean
• pnpm test: 123 passed (19 files), including 7 new tests covering source_ids-native walking, source_ids-over-premises precedence, legacy fallback, and the hasPremiseTree/conclusionSourceIds contracts
• pnpm lint clean
• pnpm build succeeds
• Verified against live Honcho 3.2.0: conclusion payloads carry source_ids/times_derived (direct observations have source_ids: null, times_derived: 1)