Controls map: docs/CONTROLS.md, shipped with the dist

Written from the default bindings.txt so it matches what the game
actually writes. Covers the Xbox pad (ASCII diagram plus a table of
every button and its RIO address), the keyboard - numpad flight
cluster diagram, the Shift/Ctrl/Alt throttle and reverse modifiers,
Alt+Q abort - and the panel button banks, showing how the number and
letter rows map onto the five MFD clusters exactly as printed on the
pod board, with the G/B gap keys and the F-key Secondary/Screen
columns. Also notes the keypads being deliberately unbound, the RGB
lamp mirror, and how to rebind with worked examples.

pack-dist copies it to the dist as CONTROLS.txt, flattened to ASCII so
it reads correctly in Notepad while the markdown source keeps its
typography. README links it.

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

README.md

@@ -46,7 +46,8 @@ button, and axis; written with the full default layout on first run).
 Default controls: numpad flies (8/2/4/6 stick, 7/9 pedals, 0 trigger),
 Shift/Ctrl throttle, Alt reverse, arrows look, Space fires, letter rows
 are the MFD button banks as printed on the panel. **Alt+Q** aborts a
-mission.
+mission. Full map with pad and keyboard diagrams:
+[docs/CONTROLS.md](docs/CONTROLS.md).
 
 ## Building
 
@@ -59,6 +60,7 @@ mission.
 
 | Doc | Contents |
 |-----|----------|
+| [docs/CONTROLS.md](docs/CONTROLS.md) | Controls map — pad and keyboard diagrams, the panel button banks, rebinding |
 | [docs/RP412-ROADMAP.md](docs/RP412-ROADMAP.md) | The original plan and workstreams |
 | [docs/RP412-FRONTEND-DESIGN.md](docs/RP412-FRONTEND-DESIGN.md) | TeslaConsole analysis, the egg format, the console protocol, and the Steam mapping — with status notes as each layer landed |
 | [docs/STEAM-3-MACHINE-TEST.md](docs/STEAM-3-MACHINE-TEST.md) | Multiplayer test procedure, Steam Input notes, the abort key |