digest-aware serialized extraction + chain simplification replace the spine stage

sorokin.oleg.edu/learnharness

Owner live-test verdict on the spine (2026-09-30): no perceptible gain —
the real problems (restatement nodes, shallow re-derivations, same
conclusion from many angles) are mint-time issues a post-hoc chain
minter cannot fix. This arc moves assembly INTO the extractor and adds
the deterministic dedupe the owner specified:

- Digest-aware extraction: each stretch's extractor prompt carries THE
  GRAPH SO FAR (its own source's merged propositions + chains, ids
  verbatim); build on existing ids instead of restating, lean on
  established conclusions as premises. Mixed-namespace chain endpoints
  (fresh p-ids OR existing n_-ids) validated at the submit seam.
- Serialized per source: a source's batches/chunks run strictly in
  order (each extract reads every earlier merge); cross-source runs
  stay parallel; source-wide abort stops the loop. The spine stage,
  role, phase, usage stage, cost row, and setup roster are gone.
- Core-ideas prompt: goal reframed as uncovering core ideas and showing
  how everything derives from the foundations; direction upward, prefer
  lean derivations, never re-derive what the graph already holds.
- Chain simplification (merger maintenance): simplifyChains drops
  provably redundant chains at every merge — prefer-fewest-premises +
  ancestry-cover ([A,B]⟹X with [X,C]⟹Y covers [A,B,C]⟹Y, transitive);
  same-key provenance lines drop together; rewriteLedgers under the
  audit lock; droppedChains counted separately in stats.

Chunk budget stays 8192 (owner: keep for now, maybe lower later).

This commit is contained in:

amosblomqvist

2026-09-30 17:44:37 +03:00

parent 52c02533d1

commit 91341a93da

18 changed files with 734 additions and 879 deletions

									
										src/core/contracts/graph.ts
									
		+6
		
												View File
												
				@@ -63,6 +63,12 @@ export interface EmissionStats {

					nodes: number;

					/** New reasoning chains appended. */

					chains?: number;

					/** Chains the simplification pass removed in this merge (owner,

					 *  2026-09-30 evening — ancestry-cover / prefer-fewest-premises).

					 *  Maintenance, not extraction: appends are counted in `chains`

					 *  regardless. Undefined when nothing dropped (pre-simplification

					 *  records read as zero). */

					droppedChains?: number;

				}

				/** One provenance point — message-granular (DECIDED 2026-09-02): nodes and