KB: full staleness audit + sweep -- 35 verified corrections across 16 topics, 15 new glossary terms

Adversarially-verified audit (18 agents) against the task #46-#56 landings:
MP/current-state understatements, superseded punch readings, retired env
gates, dead paths, line-cite drift; env-gate hub table completed.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

context/decomp-reference.md

@@ -141,14 +141,17 @@ From the weapon `.SUB` records + the charge-curve `.data` constants (PE-parsed a
 ## 6. Env-var gates (runtime; default OFF unless noted)
 
 The authentic stack is DEFAULT-ON (`BTEnvOn`, mechrecon.hpp): `BT_GAIT_CUTOVER`, `BT_GAIT_SM`,
-`BT_COLLISION`, `BT_REAL_CONTROLS` default ON — set `=0` to fall back. ⚠ Gates check
-`getenv(name) != NULL`, so `BT_X=""` (empty) still ENABLES; use `Remove-Item Env:\BT_X`.
+`BT_COLLISION`, `BT_REAL_CONTROLS` default ON — set `=0` to fall back. ⚠ Most BOOLEAN gates check
+`getenv(name) != NULL` or first-char `!= '0'`, so `BT_X=""` (empty) still ENABLES; use
+`Remove-Item Env:\BT_X`. Value-parsing gates are NOT empty-enabled: `BT_AUTOFIRE` and
+`BT_KEY_NOFOCUS` require `'1'`, `BT_GOTO` requires a non-empty value, and `BT_WARP_MIP` is
+default-ON (`'0'` disables).
 
 | Var | Effect |
 |---|---|
 | `BT_FORCE_THROTTLE` | auto-walk forward (no key) |
 | `BT_SPAWN_ENEMY` | spawn a target mech 120u ahead along the spawn facing |
-| `BT_FORCE_FIRE` | auto-fire on cooldown |
+| `BT_AUTOFIRE=1` | hold the trigger (headless walk→fire→death harness; supersedes the dead `BT_FORCE_FIRE` — btl4main.cpp:310 set `fireForced` once at startup, but mech4.cpp:1567 unconditionally overwrites it every frame) |
 | `BT_ASSERT_TO_DEBUGGER` | route CRT asserts to the debugger, not a modal box |
 | `BT_HEAPCHECK` | whole-heap validation on every alloc/free (O(n²) at mission load — SLOW) |
 | `BT_PROBE_BGF=<name\|ALL>` | boot-time BGF loader probe, exits after |
@@ -165,11 +168,18 @@ The authentic stack is DEFAULT-ON (`BTEnvOn`, mechrecon.hpp): `BT_GAIT_CUTOVER`,
 | `BT_START_INSIDE` | begin in the cockpit view (V toggles) |
 | `BT_FORCE_MODEL=<name>` | force the player mech (`madcat`/`owens`/…; btl4mssn.cpp — per-mech cockpit bring-up) |
 | `BT_HIDE_COCKPIT` | hide the `*_cop` canopy shell (SHOWS by default — see [[cockpit-view]]) |
-| `BT_COP_*` / `BT_EYE_FWD=<f>` | cockpit canopy + eye diagnostics (`DOUBLE`/`FLIP`/`RAMP_L`/`DEBUG`/`DUMP`; eye forward-push probe) — [[cockpit-view]] |
+| `BT_COP_*` / `BT_EYE_FWD=<f>` | cockpit canopy + eye diagnostics (`FRAME` (unlit frame colour override, default 0.13,0.12,0.15) / `SINGLE` (single-sided diag; double-sided is default) / `PLATES=1` (disable the punch stencil-cut kit) / `FLIP` / `DEBUG` / `DUMP`; eye forward-push probe) — [[cockpit-view]] |
 | `BT_SHOT=<path.png>` | periodic backbuffer dump (every 90 frames) — non-disruptive visual verification |
 | `BT_TLOC_LOG` | translocation-warp lifecycle log (`[tloc] warp COLLAPSE/EXPAND/phase=…`) |
 | `BT_WARP_*` | translocation-warp visual tuning — all default to the verified values (see [[translocation-warp]]): `EYE_UP=8.25` (on-axis), `SPIN=4`, `TWIST=0`, `CONTRAST=1.0`, `LO_*/HI_*` (lavender ramp), `BLUR=0`, `TESS=3`, `MIP=1`, `CULL=cw`, `ANISO=0` |
 | `BT_WARP_SELFTEST` / `BT_WARP_SELFSHOT=<prefix>` | DIAG (off by default): force a held warp in a solo game / dump backbuffer frames to disk (visual-verification harness) |
+| `BT_GYRO_LOG` | gyro bring-up log (gyro.cpp) |
+| `BT_GYRO_TRACE` | per-frame hit-bounce integrator trace |
+| `BT_REPL_LOG` | replicant/MP replication log (mech4.cpp) |
+| `BT_GOTO="enemy"\|"x z"` / `BT_GOTO_LOG` | self-driving beeline (to the enemy or a map coordinate) + its log |
+| `BT_MP_LOG` / `BT_MP_NET` / `BT_MP_FORCE_DMG` | MP diagnostics / forced cross-pod damage |
+| `BT_AUTODRIVE=<0..1>` | headless throttle |
+| `BT_KEY_NOFOCUS=1` | accept key input without window focus |
 
 Full render/locomotion gates (BT_RAMP, BT_MATPRI, BT_CULL, BT_SHADOW_*, BT_LODSEL, BT_ADDLOD,
 BT_PUNCH, …) are catalogued in [[rendering]]. Warp visuals: [[translocation-warp]].