Integrate physical radio calls and finite vehicle maintenance

docs/playtest-build.md

@@ -1,5 +1,7 @@
 # Development playtest build — 20 September 2026
 
+The handoff below is the historical `5e74269` vanilla-only candidate. Current AI/Chat source requires the audited RHS/WCS/BMP closure; use [the external development build workflow](packed-external-development.md) for a fresh build. Do not identify this older handoff as the current mission.
+
 This refresh targets `/home/jakub/devel/escapistsrereintroduced/.build/playtest-2026-09-20` from gameplay source commit `5e74269`. It adds mission-owned Chat administration and menu, the owned Intel migration, and fairer HQ contact selection to the previous playtest. **The refreshed handoff is ready for human testing.** All 216 authored files match commit `5e74269`, all five PAK payloads match those sources, and all fifteen copied runtime files are verified. [Packed Core](evidence/packed-core-2026-09-20-playtest/report.json) and [packed full scenario](evidence/packed-chat-2026-09-20-playtest/report.json) pass ordinary startup with zero captured errors, unchanged inputs and verified cleanup. Consult [the exact build record](evidence/playtest-2026-09-20/build.json) and the handoff's raw `checks/`. This remains a development candidate for human testing, not a qualified release.
 
 The source baseline already has native menu/owner-RPC and scripted escape evidence, including the final journal rendering/follow correction; see [Chat integration](chat-integration.md) and [AI/Intel migration](owned-ai-intel-migration.md). Full human play, remote multiplayer and comparative FPS remain unverified. Manual launch scripts use separate profiles and `/home/jakub/devel/escapistsrereintroduced/.local/playtest-compat-20260920`, keep sound muted, and refuse an unfinished handoff. They have not been launched visibly by this refresh. The previous `playtest-2026-09-19` folder remains untouched.