Glass input audit: RIO mapper id fix (panel banks live), keyboard reconciliation

Root cause of the dead on-screen panel: MechRIOMapper's message-id enum
chained off L4MechControlsMapper::NextMessageID (=0x19), registering all 18
RIO override handlers at 0x19-0x2a while the streamed .CTL EventMapping
records carry the binary's ids -- the binary RIO table @0051dd30 re-registers
the BASE aux/zoom ids 3..0x13 (Hotbox 0x1a @0051de98).  Every MFD-bank/zoom
press hit the base ConfigureMappableMessageHandler FAIL trap (26/72 buttons
dead; an abort() on a trap-armed pod).  Ids now pinned to the binary
numbering + static_assert-locked (btl4mppr.hpp) -- panel goes 26 -> 52
working buttons (8 await handler reconstruction, filed on Gitea; 12 have no
streamed mapping authored = authentically inert).

Keyboard reconciliation (glass-only): the merged map -- keyboard hosts the
~20 core gameplay actions on the CONTROLS.MAP keys, the panel covers every
pod address by click (right-click = hold latch):
- W/S throttle lever, A/D pedals, Q/E twist, R/F elevation, X all-stop,
  arrows drive; numpad flight cluster kept (Cyd)
- 1/2/3/4/Space/LCTRL/RCTRL fire, LALT reverse, B look-behind (0x41)
- M=0x18 mode cycle, N=0x15 display cycle, H=0x2C coolant flush (hold),
  C=0x2F Condenser1 valve, G=0x0E weapon-1 configure (Mfd1-Quad-gated)
- F5-F9 = Mfd2 bank 0x27-0x24 + 0x22 (page-gated gen A-D / gen mode)
- hardcoded: ` or V = view toggle, J/K/L = Mfd1/2/3 preset-page cycle
  (PadRIO edges -> gBTPresetCycle; no pod "cycle" button exists)
- PadRIO::SuppressKey: bound keys are swallowed from the typed 1995 channel
  (the btinput suppression pattern, glass side) -- ends the glass double
  dispatch ('w'=pilot select 0, 'a'..'g'=MFD2 presets, NUMPAD/F-key key-up
  VK aliases like VK_F5=0x74='t').  Unbound keys keep their authentic
  meanings (5/z presets, t-o pilot select, +/- zoom, F1/F2 align).

DISPLACED from Cyd's default bindings (each reachable on the panel or by a
bindings.txt edit -- flagging for Cyd's veto): number row -> secondary panel
(1-4 now fire), QWERTY row -> pilot keypad (dropped), arrows -> hat looks
(now drive), V/C/B -> fire 0x47/0x46/0x45 (now view/valve/look-behind),
LCTRL -> throttle-down (now fire).  XInput pad section untouched.

Audit by-products (KB updated): the always-active msg-4 records identified
(0x2C = Reservoir flush, 0x29-0x2F = condenser valves, 0x1A-0x1D =
GeneratorA-D ToggleGeneratorOnOff @004b1ed0 unreconstructed); 0x13 = Mech
DuckRequest (crouch), 0x28 = BalanceCoolant; Searchlight/ThermalSight
ToggleLamp handler-sets are default-constructed EMPTY; weapon Eng-page msgs
0x3/0xb = ToggleCooling / ToggleSeekVoltage / EjectAmmo, all unwired;
unhandled messages are SILENT (no [FAIL] -- census = BT_CTRLMAP_LOG dump x
handler tables).

Verified live (build-glass2, ARENA1): panel presets/zoom/display/flush;
W drive (speedDemand 61.5, gait advances), Q turn (BAS), M -> MID, A turn
(MID), Space fires, N display, J/K/L presets, H flush drain, C valve 1->5;
suppression ('w' swallowed, 't' flows, F5-keyup swallowed); BT_SHOT frame.
Un-regression: pod build (gates OFF) compiles 0 errors, forced-walk drives,
streamed ids unchanged; CONTROLS.MAP/btinput untouched.

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

docs/GLASS_COCKPIT.md

@@ -162,6 +162,87 @@ map `169.254.77.1=<steamID64>` → egg roster carries the token → mission proc
 mission RUNS (46 ticks). 3-config build matrix green throughout. **Remaining (user hardware):**
 the live 2-account cross-machine session — procedure in `docs/STEAM_TEST.md`.
 
+## 2026-07-20 — Glass input-coverage audit + keyboard reconciliation
+
+**Trigger:** making BT_GLASS the permanent player experience — familiar desktop keys dead, "most
+panel buttons do nothing". Full audit of every input surface (bindings.txt keys, the 72-button
+panel, the streamed .CTL EventMapping records, the typed 1995 channel), then the fix set.
+
+### Finding 1 — THE panel-dead-buttons root cause: MechRIOMapper message ids shifted [T1→T2 fixed]
+`MechRIOMapper`'s enum chained `Aux1QuadMessageID = L4MechControlsMapper::NextMessageID` (=0x19),
+registering all 18 RIO handlers at ids 0x19-0x2a. The binary RIO table @0051dd30 RE-REGISTERS the
+base aux/zoom ids **3..0x13** with the override handlers (Hotbox = 0x1a @0051de98) — that
+re-registration over the base FAIL-trap ids is the whole point of the derived table. Streamed
+`.CTL` events carry the binary ids, so every MFD-bank/zoom press found only the base
+`ConfigureMappableMessageHandler` → `[FAIL]` (26 of 72 panel buttons dead; on a real pod with the
+hard trap, an abort()). Hotbox worked by accident (sender + entry both used the same wrong 0x2a).
+Fixed: ids pinned to the binary numbering + static_assert locks (`btl4mppr.hpp`). Verified live:
+panel 0x0F/0x08/0x27/0x20 → `[mode] preset` lines, 0x10/0x11 zoom no longer FAIL. (Residual
+fidelity gap: the binary RIO table also carries its OWN Keypress id 0x19 → @004d2514,
+unreconstructed; we still register the shared L4 Keypress 0x17 — works, logged in the backlog.)
+
+### Finding 2 — the always-active msg-4 records IDENTIFIED [T1] (closes the #9 open question)
+Binary message tables decoded from section_dump (16-byte {id,name,fn,0} entries): per-receiver-
+class id spaces. Roster (ARENA1 MadCat): subs 3=Reservoir, 4-9=Condenser1-6, 10-13=GeneratorA-D.
+So: **0x2C = the COOLANT FLUSH button** (Reservoir InjectCoolant, WORKS), **0x2F/0x2E/0x2D/0x2B/
+0x2A/0x29 = per-condenser VALVE buttons** (MoveValve, WORK), **0x1A-0x1D = Generator A-D ON/OFF**
+(`ToggleGeneratorOnOff` id 4, table @0050fb90 fn @004b1ed0 — DEAD, unreconstructed). Also new:
+0x13 → Mech **DuckRequest** (0x1a @0049fa00 — the manual's CROUCH button!), 0x28 → Mech
+**BalanceCoolant** (0x16 @0049f728), 0x12 → ThermalSight toggle (id 3), 0x14 → Searchlight +
+Searchlight2 **ToggleLamp** (id 3 @004b860c — body reconstructed but `Searchlight::
+MessageHandlers` is default-constructed EMPTY, so it never fires: the quick win). Weapon
+Eng-page extras: msg 0x3 = **ToggleCooling** (HeatableSubsystem @0050e41c fn @004ad6f8, unwired),
+msg 0xb = **ToggleSeekVoltage** (energy @004ba478) / **EjectAmmo** (ammo weapons @004bb9b8),
+Myomers msg 9 = ToggleSeekVoltage (@004b8a48; body exists, unwired). Unhandled messages are
+SILENT (Receiver::Receive ignores an unfound id) — the dead-button census cannot come from
+[FAIL] logs alone; it comes from the BT_CTRLMAP_LOG record dump × the handler tables.
+
+### Finding 3 — glass keyboard: stand-down + double dispatch [T2]
+ALL btinput actions (drive keys, M/N/J/K/L/H/C/V/B/G/F5-F9) stand down when PadRIO owns the path
+— nothing on the game side polls keys directly (BTInputPoll is the only GetAsyncKeyState
+consumer). Meanwhile the typed 1995 channel stays LIVE (glass preset = `PAD,KEYBOARD`) with NO
+suppression — so Cyd's old bindings double-dispatched: W (keypad row) also typed 'w' = pilot
+select 0; C (fire middle) also typed 'c' = MFD3 Eng3; NUMPAD key-UPS alias to letter hotkeys
+(VK_NUMPAD2=0x62='b' = MFD3 Quad, VK_F5=0x74='t' = pilot select 3). This is the historic
+pre-btinput double-dispatch, back on the glass side.
+
+### The fix set (landed)
+1. `btl4mppr.hpp` — RIO id pinning (ungated, pod-correctness; the step-2a idiom).
+2. `L4PADRIO.*` — typed-channel suppression tables built from the loaded bindings (+hardcoded
+   keys), `PadRIO::SuppressKey` consumed by a `#ifdef BT_GLASS` arm next to the btinput hook in
+   `L4CTRL.cpp:1506` block; V joins backtick on the view-toggle edge; J/K/L fire
+   `gBTPresetCycle[3]` (the same seam the dev poll feeds — no binary analog exists for a "cycle"
+   button; the body is the authentic SetPresetMode).
+3. `L4PADBINDINGS.cpp` + `content\bindings.txt` — the MERGED default map (user decision:
+   keyboard = the ~20 core gameplay actions on the CONTROLS.MAP keys; the PANEL covers all 72
+   pod buttons by click/latch). W/S throttle, A/D pedals, Q/E twist, R/F elevation, X all-stop,
+   1-4/Space/Ctrl fire + LALT reverse + B look-behind, M=0x18, N=0x15, H=0x2C (flush hold),
+   C=0x2F (Condenser1 valve), G=0x0E (weapon-1 configure, Mfd1-Quad-gated), F5-F9=Mfd2 bank
+   0x27-0x24+0x22 (page-gated gen A-D/mode), numpad flight cluster kept. DISPLACED from Cyd's
+   map (each reachable on the panel or by editing bindings.txt): number row→secondary panel,
+   QWERTY row→pilot keypad (dropped), arrows→hat looks (arrows now drive), V/C/B→fire
+   0x47/0x46/0x45, LCTRL→throttle-down. XInput pad section untouched.
+   NOTE (control modes, authentic): in BAS mode the pod turns with the STICK (Q/E here) and the
+   pedals are inactive; A/D turn in MID/ADV — exactly the manual's behavior, unlike the desktop
+   bridge which re-routes A/D per mode.
+4. Un-touched: CONTROLS.MAP, btinput defaults, pod serial path. `bindings.txt` is read only by
+   `PadBindingProfile` inside the gated PadRIO TU — the pod build never opens it.
+
+### Verification (2026-07-20, build-glass2, ARENA1 solo, all logs in-session)
+- Panel: 0x0F→preset(0,1), 0x08→(0,0), 0x27→(1,1), 0x20→(1,0), zoom no-FAIL; 0x15 display
+  1→2→0; 0x2C hold → `[flush] Reservoir level 6→0`; dead-class buttons (0x13/0x1A/0x12/0x14)
+  silent as predicted. ZERO [FAIL] lines in the whole session (was 2 per bank press).
+- Keyboard: W hold → thr 0→1, speedDemand 61.501, gait advances; Q → turnDemand 0.94 (BAS);
+  M → `control mode -> 1`; A hold → turnDemand 1.0 (MID); Space → `[emitter] FIRED`; N →
+  `display notify 1`; J/K/L → presets (0,1)/(1,1)/(2,1); H → reservoir drain; C → condenser#1
+  valveState 1→5. BT_SHOT frame confirms visually: MID lit on the control-mode column, CRITICAL
+  DAMAGE schematic up, MFDs on Eng pages, heading moved. V not re-injected (user took
+  foreground mid-run) — code-identical to the verified backtick edge [T3].
+- Suppression: typed 'w' swallowed (no [keych]), typed 't' flows ([keych] 0x74), WM_KEYUP
+  VK_F5 swallowed (the 't'-alias hazard).
+- Un-regression: build-pod (gates OFF) compiles 0 errors; forced-walk run drives
+  (speedDemand=61.501, 32 subsystems, streamed ids 3→+0xdc / 4→+0xe4 unchanged).
+
 ## 2026-07-18 — Merge origin/master (commit f889e24): btinput meets PadRIO
 
 Master's 33-commit run landed (D1 relay/operator-console line, CONTROLS.MAP+XInput binding