docs(dev): GE-ENV-PROBES.md — add GE_FORCEALARM (D207) row

Fixes the validate CI job (gen_env_probes.py --check drift).

docs/dev/GE-ENV-PROBES.md

@@ -32,6 +32,7 @@ Two classes:
 | `GE_DMEMWIPE` | `port/src/mixer.c` (`aClearBufferImpl`) | Zeroes the whole software DMEM at the frame boundary (detected as `alMainBusPull`'s clear of `AL_MAIN_L_OUT`, addr 1088). Tests whether audio state survives across frames in DMEM. M-65: no-op on output — ruled out. | **live** (D202) |
 | `GE_NOWET` | `port/src/mixer.c` (`aSetVolumeImpl`) | Mutes the reverb send (`wetamt = 0`), isolating the reverb delay lines as a possible source of persistent signal. M-65: drone unchanged — ruled out (NB `aPoleFilterImpl` is still an unimplemented no-op, D199). | **live** (D202) |
 | `GE_BANKDUMP` | `port/src/romdata.c` | `BANKSRC` lines: the source ROM-layout bank tree per `soundIndex` (instrument → sound → envelope pointers + `decayTime`). Used to prove sound 203's `decay=-1` is genuine ROM data, not a conversion bug. One-shot at load. | **live** (D202) |
+| `GE_FORCEALARM` | `src/game/propobj.c` (`handle_alarm_gas_timer_calldamage`, `#ifdef PORT`) | **D207 diag (temporary).** Forces the in-game alarm klaxon (`alarmActivate`) on a frame counter — on ~2–10 s, off, on again — and emits a per-frame `[D207] f=… active=… ptr_alarm_sfx=… playstate=… locked=…` line to `audiotrace.log`. Repro harness for the "alarm SFX overrides other audio" report when a level's own alarm can't be triggered headlessly. Remove when D207 closes. | **live** (D207) — temporary |
 | `GE_KEYMAPDUMP` | `port/src/romdata.c` | `KEYMAP` + `ENVSRC` lines: raw source bytes of every `ALKeyMap` / `ALEnvelope` in the ROM-layout blob, for byte-wise comparison against runtime values. One-shot at load. | **live** (D202) |
 | `GE_AUDIODUMP` | `port/src/audio.c` (`audioSetNextBuffer`) | Raw-dumps every mixed s16/stereo/22050 Hz buffer to `audiodump.raw` in the CWD for offline waveform inspection. Length ÷ 88200 = seconds of audio produced. | **live** (D202) |
 | `GE_VOICEDUMP` | `port/src/mixer.c` (`aEnvMixerImpl`) | Dumps each voice's resampled mono stream (post-resample/pre-envelope, i.e. the env-mixer input) to `voicedump.raw` as records of `[u32 stateAddr][u32 nSamples][u64 us][s16 × n]`. **The µs stamp is when the block was MIXED — records are rendered ahead, so a record's samples END at its stamp** (M-69: treating stamps as start offsets misplaces content by up to one ~33 ms block). `stateAddr` = the env-mixer state address from `[VOICEMAP]`. Used with `scratchpad/exact_match.py` for full-corpus per-voice sample verification. | **live** (D202) |