fix(ci): regenerate findings-index.csv, document GE_DETERM_TRACE

The D117 findings.md addenda in the prior commit changed D117's status
text without regenerating findings-index.csv, and the new GE_DETERM_TRACE
env var wasn't yet mentioned in GE-ENV-PROBES.md -- both fail their
--check gate in CI's validate job. Caught by a real CI run, not predicted.

Claude-Session: https://claude.ai/code/session_01P3WrUHAFQZUuhrHhiJgTUr

docs/dev/GE-ENV-PROBES.md

@@ -71,5 +71,9 @@ Two classes:
 - `[Debug]` ini keys (`Debug.FrameDump`, `Debug.InputLog`) mirror
   `GE_PCDUMP` / `GE_INPUTLOG` as a fallback (env var wins) — M-26,
   `port/src/config.c`.
-- Not GE_-prefixed but same category: `GE_DETERM` is **designed, not
-  implemented** (fixed-tick determinism mode, §F D117).
+- Not GE_-prefixed but same category: `GE_DETERM` is **implemented but
+  experimental — not yet achieving its determinism goal** (fixed-tick
+  mode, §F D117, M-52 four-pass writeup); `GE_DETERM_TRACE` (M-52 4th
+  pass) adds instrumented clock-event logging when used alongside it, for
+  diffing two runs to localize remaining divergence. Both env-gated,
+  default off, zero cost when unset.

docs/dev/findings-index.csv

@@ -48,7 +48,7 @@ D93-D102,RESOLVED,struct-pun / hardcoded-size pass:,resolved (D95 pool bump part
 D103-D107,RESOLVED,"BUNKER1 viewport height, depth-buffer clear (G_CLEAR_DEPTH_EXT), portal near-plane, LOD mip tile",resolved
 D108-D112,RESOLVED,skeletal models: d43_emit.py put_f32 byte-reversal bug,resolved
 D113-D116,FIXED,portal BFS ok · matrix chain ok · player raw-offset audit + gunfire.c THROW* · HUD text X-mirror,"D114/D116 CLOSED — NOT A BUG (M-33, see D168):"
-D117,RESOLVED,frame nondeterminism root-caused; GE_DETERM deferred; framediff.py structural,resolved (mode deferred)
+D117,OPEN,frame nondeterminism root-caused; GE_DETERM deferred; framediff.py structural.,"OPEN (mode attempted, not achieved)"
 D118,RESOLVED,SDL input layer (port/src/input.c); M-24 mouse-look rework:,resolved (D118a residual)
 D150,FIXED,watch OBJECTIVES / BRIEF page crash:,FIXED (src/str.c #ifdef PORT); interactive re-verify pending
 D137,FIXED,right-mouse (aim-sight) crash:,FIXED (src/game/gunfire.c #ifdef PORT —