Add governed ALZ edition probe

docs/TODO.md

@@ -41,7 +41,8 @@
 - [x] Add a read-only source freshness/version audit with explicit publication policies, local integrity checks, operator CLI and compact Status workspace surface.
 - [x] Add explicit bounded GRB/orthophoto catalogue release probes using official capabilities and ISO metadata; keep every acquisition separate and operator-controlled.
 - [x] Add a governed regional GRB plan -> stage -> checksum-confirmed apply workflow that preserves every previous snapshot.
-- [ ] Extend catalogue probes only to additional sources that publish a stable machine-readable edition contract; do not add background polling or infer releases from HTTP dates alone.
+- [x] Add a fail-closed ALZ publication probe that distinguishes provisional v1/v2 snapshots from the definitive v3 historical edition and never downloads an archive.
+- [ ] Extend catalogue probes only to additional sources that publish a stable official edition contract; do not add background polling or infer releases from HTTP dates alone.
 
 ## Governed source expansion backlog
 
@@ -683,7 +684,7 @@ This file now starts with the current implementation status. Older preparation/b
 - [x] Show precise daily edition ranges and explain registration-date nuance in
   the Evolution workspace.
 - [x] Document refresh readiness across the complete official-source portfolio.
-- [ ] Add the next governed catalog probe only after an official stable version
-  contract is verified; ALZ annual releases are the first candidate.
+- [x] Verify and add the governed ALZ catalog probe against the official
+  campaign-snapshot and definitive-archive publication contract.
 - [ ] Keep orthophoto refresh manual until product variant, flight year and
   complete selected-area coverage can be compared deterministically.