feat(vinput): open the command palette with right Ctrl

Pin keyd's right-hand modifiers (rightcontrol/rightshift/rightmeta) to their own keycodes; keyd otherwise folds them into the left keys. Set Vinput's MenuKey to right Ctrl and clear CommandKeys, which would shadow it.

WORKAROUNDS.md

@@ -36,6 +36,7 @@ A setting that works around a bug or a hardware quirk.
 | WA-009 | USB-SATA bridge mitigations (`usbcore.autosuspend=-1`, `usb-storage.delay_use=10`) — `hosts/12kingdoms-youko/default.nix` | flaky JMicron JMS567 resets with UDMA-CRC and I/O errors                | Drop once the bridge/controller is replaced; the signal is smartctl CRC/media errors            | 2026-09-21 | on hardware change or CRC errors            | active |
 | WA-010 | Insta360 Link USB reset on S3 resume — `hosts/idols-ai/default.nix`                                                       | the camera stays enumerated with a stalled UVC endpoint after resume    | Drop after the Insta360 firmware or the kernel `uvcvideo` fixes it                              | 2026-08-01 | on kernel or firmware change                | active |
 | WA-011 | Kernel module blacklist (`esp4`, `esp6`, `rxrpc`) — `hardening/kernel-hardening.nix`                                      | attack surface for the Dirty Frag LPE (CVE-2026-43284 / CVE-2026-43500) | Kept as defence in depth; drop only if something needs those modules                            | 2026-10-03 | rarely                                      | active |
+| WA-017 | keyd right-hand modifier passthrough — `modules/nixos/desktop/peripherals.nix`                                            | keyd folds right Ctrl/Shift/Meta into their left keys                   | Drop once keyd or fcitx5 keeps right-hand modifiers distinct                                    | 2026-10-05 | on keyd bump                                | active |
 
 If WA-008 freezes recur, the fallback is to restore
 `nvme_core.default_ps_max_latency_us=0 nvme_core.io_timeout=4294967295 pcie_aspm=off`; this is a

home/linux/gui/base/vinput/README.md

@@ -1,8 +1,17 @@
 # Fcitx5 Vinput
 
-On `ai` and `shoukei`, install a Sherpa-ONNX model, then hold and release **right Alt** to dictate.
-**Right Shift** toggles Chinese/English; **left Shift** remains a normal modifier. Open Vinput from
-the application launcher for settings.
+Voice input on `ai` and `shoukei`, backed by a Sherpa-ONNX model. Open Vinput from the application
+launcher for settings.
+
+## Key bindings
+
+- Right Alt: record. Hold and release to dictate.
+- Right Ctrl: open the command palette (`/model /asr /scene /proc`).
+
+Vinput resolves `TriggerKey` > `CommandKeys` > `MenuKey`. `TriggerKey` is right Alt by default; the
+config sets `MenuKey` to right Ctrl and clears `CommandKeys`, which otherwise defaults to right Ctrl
+and would shadow `MenuKey`. The addon reads list options as `[Option]` plus `0=`, not the
+`[Trigger]` shorthand in upstream's `vinput-config(5)` man page.
 
 ## One-time setup (CLI)
 

home/linux/gui/base/vinput/default.nix

@@ -15,11 +15,18 @@ in
   config = lib.mkIf cfg.enable {
     i18n.inputMethod.fcitx5.addons = [ vinput ];
 
+    # MenuKey opens the command palette; set it to right Ctrl. `CommandKeys`
+    # (voice command on the selection) defaults to right Ctrl and outranks
+    # `MenuKey`, so clear it or the palette never opens. List options use
+    # fcitx5's `[Option]` + `0=` form, not upstream's `[Trigger]` shorthand.
     xdg.configFile."fcitx5/conf/vinput.conf" = {
       text = ''
-        [Trigger]
-        MenuKey=Super_R
+        [MenuKey]
+        0=Control_R
+
+        [CommandKeys]
       '';
+      # fcitx5 rewrites this file at runtime, like `profile` and `config`.
       force = true;
     };
 

modules/nixos/desktop/peripherals.nix

@@ -64,6 +64,17 @@
           # overloads the capslock key to function as both escape (when tapped) and control (when held)
           capslock = "overload(control, esc)";
           esc = "capslock";
+
+          # keyd rewrites right-hand modifiers as their left counterparts, so
+          # pin them to their own keycodes. Vinput's MenuKey is right Ctrl and
+          # Rime's right Shift switches CN/EN.
+          rightcontrol = "rightcontrol";
+          rightshift = "rightshift";
+          rightmeta = "rightmeta";
+
+          # Right Alt is AltGr, the third-level shift on many European layouts
+          # (e.g. `AltGr+2` is `@` in Spanish); keyd forwards it as-is.
+          rightalt = "layer(altgr)";
         };
       };
     };