Kyle Isom 562b69e875 Phase 9: two-phase garbage collection engine ...

GC engine (internal/gc/): Collector.Run() implements the two-phase
algorithm — Phase 1 finds unreferenced blobs and deletes DB rows in
a single transaction, Phase 2 deletes blob files from storage.
Registry-wide mutex blocks concurrent GC runs. Collector.Reconcile()
scans filesystem for orphaned files with no DB row (crash recovery).

Wired into admin_gc.go: POST /v1/gc now launches the real collector
in a goroutine with gc_started/gc_completed audit events.

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

2026-03-19 20:27:17 -07:00

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