Add free view and a separate cyberspace action set

- Free view: hold a mapped input (default: left grip) and that thumbstick
  drives the engine's mouse look, with the stick's normal bindings suspended
  while held. Also available for the right stick, unbound by default.
- Cyberspace actions: eleven thrust/climb/dive/bank/roll actions with their
  own bindings, active only in cyberspace. The normal movement actions are
  inactive there, and capture exclusivity only compares actions that can be
  active together, so one input can be bound in both sets.
- Cyberspace pitch and bank scale with thumbstick deflection instead of
  running at full strength.
- Remove the toggle_freelook action; bind the automap view to the right
  stick click by default.
- Engine patches: 24 exposes whether the player is in cyberspace, 25 lets
  the controller code scale cyberspace pitch and bank.

CONFIG.md

@@ -79,7 +79,7 @@ startup, in addition to (and independent of) the engine's own `prefs.txt`.
     "mouse_double_click": "right_b",
     "stand": "right_thumbstick_up",
     "prone": "right_thumbstick_down",
-    "toggle_freelook": "right_thumbstick_click",
+    "map_view": "right_thumbstick_click",
     "fire_weapon": "right_trigger"
   }
 }
@@ -217,10 +217,10 @@ Which way the player is virtually facing, in degrees.
 
 ## Player Controls (`player_controls`)
 
-Maps each of 45 in-game actions to a physical controller input: 9
-movement/click actions plus 36 for the engine's own keyboard hotkeys and
-firing (posture, save/load, weapon select, MFD panels, etc. - see the hotkey
-table below). Some actions are bound by default (see the default-input
+Maps each of 57 in-game actions to a physical controller input: 9
+movement/click actions, 2 free-view actions, 11 cyberspace actions, and 35
+for the engine's own keyboard hotkeys and firing (posture, save/load, weapon
+select, MFD panels, etc. - see the hotkey table below). Some actions are bound by default (see the default-input
 columns); the rest are unbound and can be bound on demand. Assign them in the
 **Controller Options** menu tab: tap an action's binding button, then press
 the button or stick direction to use ("Press a button…"); tap it again, or
@@ -258,6 +258,8 @@ wait 8 seconds, to cancel without changing it.
 | `jump` | `left_thumbstick_click` | Jump |
 | `mouse_click` | `right_a` | Click - operates the keyboard/game quad's cursor, whichever the pointing hand's ray is over |
 | `mouse_double_click` | `right_b` | Double-click - game quad only (e.g. using an inventory item); has no effect over the menu or keyboard |
+| `free_left_thumbstick_view` | `left_squeeze` | Hold to look around with the left thumbstick (see below) |
+| `free_right_thumbstick_view` | `none` | Hold to look around with the right thumbstick (see below) |
 
 Movement actions bound to a thumbstick direction are suppressed while the
 VR menu is open, since the same physical stick already snap-turns/smooth-
@@ -265,6 +267,45 @@ moves the player in that state (see `player_position` above) - this is the
 one case where a binding's effect depends on whether the menu is open, and
 it only ever affects the 8 thumbstick-direction inputs below.
 
+**Free view** (`free_left_thumbstick_view`, `free_right_thumbstick_view`) is
+the engine's mouse look driven by a thumbstick. While the bound input is held,
+that stick looks around instead of doing its normal job: left/right turns the
+view, up/down looks up and down, in proportion to how far the stick is pushed.
+The stick's own direction bindings (move, strafe, turn, stand/prone) are
+suspended while it is held, and the cursor stays centred in the view. Release
+the input to return to normal. It has no effect while the VR menu is open.
+
+### Cyberspace actions
+
+Cyberspace has its own set of movement actions, active only while the player
+is in cyberspace. While in cyberspace the normal movement actions
+(`move_*`, `strafe_*`, `turn_*`, `jump`, `stand`, `crouch`, `prone`) are
+inactive, and the cyberspace actions are inactive everywhere else. Each set
+has its own bindings, so one input can be bound in both (for example the left
+stick up is `move_forward` on foot and `cyber_climb` in cyberspace);
+the Controller Options tab only reports a conflict between actions that can
+be active at the same time. Free view, clicking and firing work in both.
+
+Pitch and bank (`cyber_climb`, `cyber_dive`, `cyber_bank_*` and the four
+diagonals) are proportional when bound to a thumbstick direction: pushing the
+stick further turns faster, from 20% of full speed just past the trigger point
+to 60% at full deflection. Bound to a button they run at full speed. Thrust and
+roll are always full speed.
+
+| Action key | Default input | Keyboard equivalent | Effect |
+|---|---|---|---|
+| `cyber_thrust` | `right_thumbstick_up` | `s` | Thrust forward |
+| `cyber_climb` | `left_thumbstick_up` | `w` | Pitch up |
+| `cyber_dive` | `left_thumbstick_down` | `x` | Pitch down |
+| `cyber_bank_left` | `left_thumbstick_left` | `a` | Bank left |
+| `cyber_bank_right` | `left_thumbstick_right` | `d` | Bank right |
+| `cyber_roll_left` | `right_thumbstick_left` | `e` | Roll left |
+| `cyber_roll_right` | `right_thumbstick_right` | `q` | Roll right |
+| `cyber_climb_left` | `none` | Keypad 7 | Pitch up and bank left |
+| `cyber_climb_right` | `none` | Keypad 9 | Pitch up and bank right |
+| `cyber_dive_left` | `none` | Keypad 1 | Pitch down and bank left |
+| `cyber_dive_right` | `none` | Keypad 3 | Pitch down and bank right |
+
 `mouse_click` additionally behaves differently depending on the menu:
 while the VR menu is open, its "click" is always whichever hand's trigger
 is used to interact with the menu (so you can never lock yourself out of
@@ -277,8 +318,8 @@ bind the `trigger` identifier (see below) for either hand to click.
 ### Hotkey actions
 
 The engine's own keyboard hotkeys (`HotKeyLookup[]` in `Prefs.c`) plus
-firing, as 36 bindable actions. `stand` (`right_thumbstick_up`), `prone`
-(`right_thumbstick_down`), `toggle_freelook` (`right_thumbstick_click`) and
+firing, as 35 bindable actions. `stand` (`right_thumbstick_up`), `prone`
+(`right_thumbstick_down`), `map_view` (`right_thumbstick_click`) and
 `fire_weapon` (`right_trigger`) are bound by default; the rest are unbound
 (`none`). Each fires once per press, like pressing the key on a real
 keyboard (there is no hold behavior).
@@ -288,7 +329,6 @@ keyboard (there is no hold behavior).
 | `stand` | `t` | Stand up |
 | `crouch` | `g` | Crouch |
 | `prone` | `b` | Go prone |
-| `toggle_freelook` | `f` | Toggle mouse-look |
 | `pause` | `p` | Pause the game |
 | `full_view` | Ctrl+F | Switch to the fullscreen view loop |
 | `normal_view` | Ctrl+D | Switch to the normal gameplay view |
@@ -317,6 +357,7 @@ keyboard (there is no hold behavior).
 **Not exposed** (other `HotKeyLookup[]` entries):
 - `keypad 0`-`keypad 9`: a controller button per digit is not useful; use the
   on-screen keyboard.
+- `toggle_freelook` (F): the free-view actions cover mouse look.
 - The 4 `cheat_*` entries: debug cheats.
 - `mac_help` (disabled) and `audiolog_cancel` (its build flag is not
   defined): they are not real hotkeys in this build.