* test(proposals): cover derived CLOSE proposal bridge
- Flag-off and emission for member/subset + relational transitive derived facts.
- Stable dedupe, skips for non-derived/malformed/unsupported.
- No status upgrade, no corpus side-effects.
- Runtime flag wiring smoke (consolidate + bridge on → emits after idle_tick).
- Re-runs of PR-1 tests + invariants stay green.
* feat(proposals): emit review-gated proposals from derived CLOSE facts
- New focused emitter generate/determine/derived_close_proposals.py:
- collect eligible derived (member/subset + TRANSITIVE) with entailed Derivation + SPECULATIVE.
- deterministic sort + stable dedupe key (predicate+args+derivation+structure_key).
- write proposal-only artifacts (source=derived_close_fact) to dedicated sink.
- best-effort, counts returned, safe skips.
- RuntimeConfig: review_derived_close_proposals (default False), documented.
- ChatRuntime.idle_tick: after consolidation (when flag on), call emitter best-effort (no did_work, no engine checkpoint).
- IdleTickResult: new field derived_close_proposals_emitted (additive, documented).
- No change to existing proposal_review contract or comprehension-failure sink.
- No serving/determine side-effects.
* docs(proposals): document derived CLOSE proposal bridge
- docs/runtime_contracts.md: new subsection under idle passes describing eligibility,
contract (proposal-only, review-gated, default-off, no corpus/COHERENT/serving change),
and cross-ref to the analysis note.
- New dated analysis note with why (flywheel bridge after PR-1), architecture/boundaries,
artifact schema, dedupe, tests, non-goals, and composition with PR-1/PR-3.
- Tiny high-level pointer not added (no suitable learning-loop section in README at this granularity).
* fix(proposals): harden derived CLOSE proposal emission
