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Step 1991: Wire AST sidecar lifecycle hooks - openFile (DispatchPart2.h): auto-calls loadSidecarAST() after parse, returns annotationsRestored + staleAnnotations - saveBuffer (DispatchPart3.h): auto-calls saveSidecarAST() + saveSemannoSidecar() after write, returns annotationsSaved + sidecarPath + semannoPath Step 1992: Fix 9 schema stubs in Sprint 142/143/144 tool registrations - All 9 text/AST sync and merge tools now have proper inputSchema with required id and documented optional parameters (language, text, mode) Step 1993: Fix ingest_legacy_to_ir → generate_cpp_from_ir chain - ingest_legacy_to_ir now emits ir field (SemanticCoreIR format) alongside existing graph/api_intent/assumption/readiness fields - RecoveryNode → IRNode mapping: intent→kind, confidence in metadata - Neighbor lists become inferred edges; moduleId = "legacy:" + slug - generate_cpp_from_ir now accepts result["ir"] directly 15/15 tests passing across all three steps. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>