feat(rag): chunk evidence identity, dedup, and search port

Preserve same-document multi-chunk evidence with evidenceKey identity, per-document caps, retrieve-k/return-n split, and a dense KnowledgeSearchPort. Archives Delivery 1 OpenSpec change as the foundation for hybrid retrieval.
2026-07-27 18:26:15 +08:00
parent 99d4f6f216
commit ac1f831903
34 changed files with 2880 additions and 298 deletions
@@ -0,0 +1,4 @@
+committed: 2026-07-27
+change: rag-chunk-evidence-identity-dedup
+scale: standard
+authorized-apply: user-preauthorized-sm-flow