v0.5.5

fix: 3 bugs in Parquet bulk loader + add get_raw_connection()

Bug 1 (CRITICAL): full_import_name fallback for TS/JS imports
- Added fallback chain: full_import_name || source || name
- Fixes 0 files indexed for TypeScript repos with KuzuDB

Bug 2 (HIGH): Verified CALLS COPY FROM works for all 6 categories
- Function→Function, Function→Class, File→Function etc all work
- Issue was in llm-wiki integration (wrong conn object), not CGC

Bug 3 (MEDIUM): Added KuzuDBManager.get_raw_connection()
- Ensures _conn is initialized before returning raw kuzu.Connection
- Required by Parquet bulk loader (COPY FROM needs raw conn)

Tested on esign-portal (506 TS), esignature-gw (52 Java),
petlandvn (1220 TS) — all CALLS, IMPORTS, nodes correct.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>