…hCommand

builder.getEdges() returns List.copyOf() (immutable). LanguageEnricher.enrich()
calls edges.addAll() on it, which would throw UnsupportedOperationException at
runtime during language enrichment.

After the ServiceDetector block, enrichedNodes/enrichedEdges were reassigned
directly from builder.getNodes()/getEdges() (immutable). Fix the same latent
UnsupportedOperationException for any downstream mutation.

ThreadLocal.remove() in finally defeated caching — parser was recreated every
call via withInitial anyway. Method-local new JavaParser() is simpler, equally
safe on virtual threads, and avoids ThreadLocal overhead.

…portEdges

Matches the dedup pattern used in Python and TypeScript extractors. Prevents
duplicate IMPORTS edges when a package is matched by both short name and full path.

Also fixes lookupUnambiguous to deduplicate by node ID, so that a node stored
under multiple registry keys (id, label, full path) is not falsely treated as
ambiguous.

…eceiver matching

Old pattern matched fabricated Go syntax. New RECEIVER_METHOD regex extracts
actual receiver methods from Go source and matches interface labels using Go
naming convention (Reader->Read, Closer->Close).

…tion

sanitizeRelType was never called anywhere. EnrichCommandTest assertion accepted
both 0 and 1 exit codes which tested nothing meaningful.

… + intelligence layer

Add intelligence/ package structure, IntelligenceController endpoints,
updated pipeline diagram, and key intelligence files to reference table.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

…E_METHOD pattern

Review found: documented endpoint count was 39 but actual bullet count is 37
(21 GraphController + 9 TopologyController + 4 FlowController + 3 IntelligenceController).
Also removed unused INTERFACE_METHOD Pattern constant from GoLanguageExtractor
left over after extractInterfaceHints was rewritten to use RECEIVER_METHOD.