GUI: wire real feature state and config

Replace the dummy preview controls with the actual settings:

- cards bind directly to the feature state and the existing option
  variables; Active/Bind now drive the same gates as the text menu;
- every feature persists active+bind, including movement, melee and spread;
- config path and build info are real; Reload config re-reads the INI;
- Reset defaults is two-click, restores feature settings/binds and keeps
  the GUI layout;
- window position, category and expanded cards persist under [gui] in the
  same config file; layout saves on drag/category/expand/close;
- mouse bind capture handles all five buttons and consumes the click so it
  cannot re-arm immediately;
- Active/Bind tooltips and full scancode names.

The old text tree stays on F1 for one verification pass.

1 files changed, 17 insertions, 9 deletions

diff --git a/CONTEXT.md b/CONTEXT.md
index 6f6e59e..0cb05c5 100644
--- a/CONTEXT.md
+++ b/CONTEXT.md
@@ -100,8 +100,9 @@ Bind rows enter bind-select mode: press a key/button to assign, `Escape` sets
 None (always-on), `Enter` cancels.
 
 > The text menu below is being replaced by the GUI described in the next
-> section. The old tree is kept only until the GUI reaches parity. During the
-> preview, **Insert** toggles the GUI and the old text tree is on **F1**.
+> section. The GUI now drives the same feature state/config. The old tree is
+> kept only for a verification pass; **Insert** toggles the GUI and the old
+> text tree is on **F1**.
 
 ```
 HL2hake
@@ -156,17 +157,24 @@ Binds use SDL scancodes; mouse buttons are pseudo-scancodes 600..604.
   and ESP/FOV circle/speed graph keep drawing. No invulnerability.
 - **Native cursor**: on open, leave SDL relative-mouse mode and show the OS
   cursor; restore on close. Absolute mouse coordinates are used.
-- **Bind capture**: click Bind, press a key/button; Esc cancels capture but
-  does not close the GUI; clicking elsewhere cancels; Clear sets None; Insert
-  is reserved for the GUI.
+- **Bind capture**: click Bind, press a key or any mouse button; Esc cancels
+  capture but does not close the GUI; the small x clears the bind (None =
+  always-on). Insert is reserved for the GUI.
 - **UI scale**: `clamp(min(screen_w/1920, screen_h/1080), 0.75, 1.5)`; base
   window 960x620, body/title fonts 15/20 px at scale 1.
 - Every feature gets Active + Bind; bind None means always-on.
-- System page: config path/build info, Reload config, and a two-click Reset
-  that restores feature settings/binds but keeps GUI layout.
+- System page: real config path/build info, Reload config (re-reads the INI),
+  and a two-click Reset that restores feature settings/binds but keeps GUI
+  layout.
 - Window: fixed-size, draggable by title bar, clamped to screen, position,
-  category and expanded cards persisted under `[gui]`. Esc does not close the
-  GUI; the toggle key (Insert) is the only close path. There is no title-bar X.
+  category and expanded cards persisted under `[gui]` in the same INI. Esc
+  does not close the GUI; the toggle key (Insert) is the only close path.
+  There is no title-bar X.
+- GUI controls write the same state the text tree used; sliders persist when
+  the drag ends, toggles/binds/layout persist immediately. `[gui]` stores
+  `x`, `y`, `category` and an `expanded` bitmask (card index order). Every
+  feature now persists an `active` and `bind` pair, including movement, melee
+  and spread.
 
 
 ## Bones / ESP