Publish Chimera GFX source

docs/retroarch/phase-1.0ba-target-profile-callsite-audit.md

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+# Phase 1.0BA: offline AV target-profile and callsite audit
+
+Status: `EXACT_CALLSITE_AND_PROFILE_DELTA_SOURCE_PATCH_ALLOWED_NO_BUILD`
+
+Date: 2026-07-29
+
+The remote-bound AZ commit leaves one exact integration point in `main`: after
+`rarch_main` returns and S15 is set, but before `_Exit`. On the normal PS5 loop
+return, `rarch_main` has already called `main_exit`; the PS5 frontend deinit
+then removes its SDL, frontend and platform initialization markers. Early
+initialization returns that bypass `main_exit` retain initialized bits and the
+AZ predicate therefore rejects D14.
+
+The smallest profile is a derivative of `write-diag`: it retains the
+contentless `-v` startup correction, write firewall, D13 operation evidence,
+bounded runtime, inherited stdout, SDL diagnostic overlay and frame-zero
+source. The only new target define is `CHIMERA_PS5_AV_DIAG`; its stream magic
+takes precedence over the inherited J selection. Launcher identity remains
+outside the payload so both future launch arms use one byte-exact ELF.
+
+The next source commit may add the call and a distinct `launch-canary` profile,
+plus host/static tests. This audit does not permit a cross-build, ELF, runner
+activation, connection, transfer, execution or PS5 action. A subsequent exact
+source audit must authorize any artifact build separately.