Integrate radio-delivered convoy cover and conservative squad ammunition reports

docs/ai-migration-progress.md

@@ -171,6 +171,45 @@ the subsequent transfer guard and fixture additions passed their focused checks,
 source-bundle preview and native compilation. All533 protected original reference
 files remained unchanged.
 
+## HQ convoy cover and ammunition follow-up
+
+The finite convoy now accepts per-vehicle HOLD/RESUME commands through each
+original crew's existing HQ radio downlink. Planning requires a delivered own
+status no older than 180 seconds and a delivered positive sighting less than
+60 seconds old within 400 m of that reported position. Delivery rechecks evidence,
+command/sighting lineage, the consumed source receipt, exact original crew and
+physical Core record. HOLD preserves the route index while removing the owned
+move waypoint; RESUME needs fresh own status and no qualifying contact after the
+held sighting's 60-second window. Lost radio or superseding information cannot
+silently resume travel. Native `AddUsableVehicle` admission supplies the mounted
+combat hooks; actual gunner firing remains an engine validation question. Player
+capture still releases the task without replacing its vehicles, crew or cargo.
+See [convoy cover details](convoy-migration.md#delivered-hq-mounted-cover-follow-up).
+
+Routine 180-second status now includes detached compatible small-arms magazine
+and chamber counts from the immutable own roster. Only a delivered, complete,
+no-older-than-180-second report proving zero small-arms rounds/chambers can veto a
+new armed infantry assignment or its delivery. Unknown/stale information never
+pretends to be empty; existing assignments and release commands are preserved.
+Separate launcher fields do not drive this initial veto. The addition does not
+migrate urgent refill requests, vehicle ammunition, general resupply or ammo
+creation. See [HQ ammunition scope and tests](hq-ammunition.md).
+
+Actual-method regressions cover both additions. The full repository check passed
+at the integration checkpoint and the original-reference guard retained all 533
+protected files unchanged. Those checks do not supply native radio/weapon or
+inventory evidence by themselves. The [native ammunition follow-up](evidence/native-2026-09-20-040857-hq-ammunition/report.json)
+completes 49 assertions: real original-roster ammunition counts, actual radio
+delivery and detached unchanged Watch data, alongside the existing casualty
+checks. No script/runtime failures occurred; four external localization errors
+remain. [Ammunition documentation](hq-ammunition.md#validation-boundary) retains
+the failed attempts and scope, including the later derived-well refinement.
+The [current-source convoy recheck](evidence/native-2026-09-20-041150-convoy-cover-driving/report.json)
+completes 181 assertions with original crew/cargo and all six vehicles driving;
+source/dependency identity and cleanup are confirmed, with the same four external
+localization errors. Native HOLD/RESUME combat transitions still need direct runtime proof; policy
+regressions are not gunner firing, multiplayer or FPS evidence.
+
 ## Remaining work
 
 - **T2 presence and a real shared active-agent budget:** materialization,