docs: accept ADR 0052, whose supplement mechanism is fully implemented

Every decision in ADR 0052 is implemented and tested in @ekklesia/module-pack:
- package material first, and a supplement only adds to it;
- reviewed, generic supplement data, checked in with the packager;
- an exact name, version, and content-digest match, failing closed on any mismatch;
- the documented, host-independent digest;
- a deterministic, labelled merge;
- no licence override, with a consistency check;
- no network during packaging;
- packageFormat 1.

The libvips 1.3.3 and 1.3.4 supplements are curated and shipped. The source-obligation determination
it deferred is now decided by ADR 0055. Only the status line and the index entry change; the decision
text is untouched.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

docs/architecture/decisions/0052-reviewed-license-supplements.md

@@ -1,6 +1,6 @@
 # 0052: Reviewed license supplements cover redistributed dependencies whose packages omit required material
 
-- Status: Proposed
+- Status: Accepted
 - Date: 2026-10-07
 - Extends: [0049](0049-module-package-v1.md), in one respect only. ADR 0049 left exactly how licence
   and notice material is collected to the packager's implementation. That implementation, and the