fix(autoswitch): WorkspacesChanged output-set diff; unit paths; deploy symlinks

- niri 26.04 has no hotplug event: OutputConfigChanged is only an ACK
  (niri-ipc). Watch WorkspacesChanged, diff sorted output set, apply on
  change. Proven live: eDP-1 off/on -> 3 output-set transitions, each
  matched + applied + reloaded.
- unit: %h/.local/bin/desk-autoswitch.sh, quoted Environment, drop
  User/Group (user unit); add desk-autoswitch.sh bin symlink
- desk.sh: silence validate/load-config/notify stdout
- deploy.sh: deploy repo symlinks (find -type l), so .local/bin links land
- docs: event semantics corrected (displays diagram, log)

omp-docs/log.md

@@ -15,7 +15,7 @@ timestamp: 2026-08-28
 
 Branch `blankpad-de-redesign` (worktree `wt/de-redesign-20261009`). Full sweep + redesign of the niri/noctalia/Handy stack on blankpad.
 
-* **Desk profiles.** `cfg/display.kdl` retired to a symlink; per-desk profiles `desk-1-home.kdl` / `desk-2-portable.kdl` declare monitors by **EDID long name** (`// requires:` lines) — connector names reshuffle between docks, identity travels. `scripts/desk.sh` = list/current/switch/cycle/match/capture; apply = relink → `niri validate` (rollback on failure) → `load-config-file` → noctalia notification. `scripts/desk-autoswitch.sh` + `blankpad-desk-autoswitch.service` watch the `niri msg --json event-stream` for `OutputsChanged` and hot-apply the matching profile (debounced 1.5 s). PM1601 EDID still uncaptured (panel disconnected) — connector-keyed placeholder, `desk.sh capture` pending.
+* **Desk profiles.** `cfg/display.kdl` retired to a symlink; per-desk profiles `desk-1-home.kdl` / `desk-2-portable.kdl` declare monitors by **EDID long name** (`// requires:` lines) — connector names reshuffle between docks, identity travels. `scripts/desk.sh` = list/current/switch/cycle/match/capture; apply = relink → `niri validate` (rollback on failure) → `load-config-file` → noctalia notification. `scripts/desk-autoswitch.sh` + `blankpad-desk-autoswitch.service` watch `niri msg --json event-stream`: niri 26.04 has **no hotplug event** (`OutputConfigChanged` is only an ACK that an IPC/config output change was Applied, per niri-ipc); the daemon diffs the sorted output set carried by `WorkspacesChanged` and hot-applies the matching profile (debounced 1.5 s). Proven live with an eDP-1 off/on cycle: `[DP-2 eDP-1] → [DP-2] → [DP-2 eDP-1]`, apply + reload each time. PM1601 EDID still uncaptured (panel disconnected) — connector-keyed placeholder, `desk.sh capture` pending.
 * **Keybinds.** `swap-window-left/right` on Mod+CTRL+H/L; move-column demoted to Mod+CTRL+Alt+H/L; 7 column-width presets 12.5–87.5 %; Print trio (full / gui / screen) via noctalia screenshot IPC; launcher Mod+D; Alt+Tab → noctalia window-switcher; Mod+V → clipboard panel (id verified live); Mod+Shift+D → desk cycle; Mod+Shift+Space → `handy --toggle-post-process`; lid-close → `noctalia msg session lock-and-suspend` (pairs with logind `HandleLidSwitch=ignore`). Cheat sheet now GENERATED: `scripts/gen-keybinds.sh` → `omp-docs/tools/niri/keybindings.md` (119 bindings).
 * **Noctalia.** `config.toml` + `settings.toml` (lives in `~/.local/state/`, not `~/.config/`) tracked; `taskbar` widget added to bar center, applied live via `noctalia msg config-reload`. Docs corrected to the v5 `noctalia msg` API.
 * **Handy.** Self-autostart killed (`~/.config/autostart/Handy.desktop` → `.AGENTTRASH`; `autostart_enabled=false`); niri owns autostart (`spawn-at-startup "handy" "--start-hidden"`). Fleet post-processing wired into the live store: provider `custom` → `http://192.168.0.143:7771/v1`, model `frank-secondary`, prompt `default_improve_transcriptions`. **Open breaker:** frank-secondary answers in `reasoning_content` and leaves `content` empty; per-request cure `chat_template_kwargs.enable_thinking=false` verified, but Handy cannot send it and the server is shared with fleet compaction — dedicated no-think port proposed. 0.9.6→0.9.8 upgrade is operator-owned (`yay -Syu handy-bin`).

omp-docs/tools/niri/displays.md

@@ -56,7 +56,7 @@ the ultrawide wins when present and the laptop panel is the fallback.
 
 ```mermaid
 graph LR
-    P[plug / unplug] --> E[niri event-stream<br/>OutputsChanged]
+    P[plug / unplug] --> E[niri event-stream<br/>WorkspacesChanged → output-set diff]
     E --> M[desk-autoswitch.sh<br/>debounced matcher]
     M --> R{profile requires<br/>subset of connected?}
     R -->|best match| A[desk.sh apply:<br/>validate - relink - reload - notify]