Capture current mission, AI, map and administration development

Include the current addon, terrain integrations, tools, regression tests and recorded development evidence.

docs/ai-migration-progress.md

@@ -1,5 +1,15 @@
 # AI migration progress — 20 September 2026
 
+## Memory-based native search area — 3 October 2026
+
+Ordinary ground SEARCH tasks now snapshot the delivered belief's uncertainty at assignment or retasking, clamped to 45–110 m. On radio delivery HQ rejects a non-finite or out-of-range snapshot before waypoint allocation and before replacing the current assignment. The waypoint receives its radius once before group installation. A later change to the live belief cannot silently resize an already queued order. No extra force, setting, deadline extension or player-position query is introduced.
+
+The native SearchAndDestroy activity uses this value as the investigation grid's square half-width. The larger grid adds cell and navigation work; neither the cap nor the offline tests establishes an FPS improvement. Missing-patrol investigation, road/site-security defence, INTERCEPT/CONTAIN and the air-team system's separate direct task remain unchanged. The Workbench patrol fixture initializes the same snapshot for future runs.
+
+Negative-search reporting still requires an attributed fit original member within 40 m of the centre for 30 continuous seconds, no native contact, and radio delivery. That witness marks one coarse 500 m cell, not a completely searched square. Larger physical searches may provide fewer such completion opportunities; this change does not weaken the witness.
+
+All 305 registered regression programs pass; native compilation, physical search behavior, multiplayer and performance for this source change remain unverified. [Source, regression controls and SDK metadata](evidence/hq-search-radius-2026-10-03/README.md).
+
 Current convoy implementation: [Supply convoys](supply-convoys.md) supersedes the single-convoy stages recorded below.