Implement Semantic Consolidator V0

- add deterministic canonicalization support for extraction items
- add facts-only semantic consolidation using local Ollama
- preserve source evidence and validate complete fact coverage
- add conservative merge rules and non-LLM tests
- record the first validated real-life consolidation benchmark
- document current scope, limitations and next evaluation step

CHANGELOG.md

@@ -19,6 +19,14 @@
   Verteilerprotokoll and Knowledge Objects / Wissensdatenbankeintrag.
 - Working Protocol Synthesizer V0 benchmark artifact for future
   canonicalizer/consolidator comparisons.
+- Canonicalizer V1 deterministic CLI for canonicalizing chunk extraction JSON.
+- Non-LLM Canonicalizer V1 tests covering ordering, validation, IDs, parsing,
+  source references, exact duplicates, invalid JSON and empty categories.
+- Semantic Consolidator V0 CLI for conservative facts-only semantic duplicate
+  detection using local Ollama.
+- Consolidation prompt and non-LLM tests for payload construction, grouping
+  validation and source fact coverage.
+- Semantic Consolidator V0 benchmark report and consolidated extraction JSON.
 
 ### Changed
 
@@ -28,6 +36,9 @@
   are parallel renderings, not derived from one another.
 - Documented the planned Deterministic Canonicalizer and Semantic Consolidator
   stages before Canonical Meeting Knowledge.
+- Clarified that Semantic Consolidator V0 is implemented only for fact
+  duplicate detection; broader semantic synthesis and Canonical Meeting
+  Knowledge remain planned.
 - Documented that rendered protocol language should normally match the source
   transcript or consolidated meeting knowledge unless explicitly requested
   otherwise.