dsh-client-ui-pending-sound

Browser chime when a session enters a user operation wait:

pendingInteraction	Motif
approval	C5 → E5
plan-review	D5 → F#5
question	E5 → G5

Several kinds in one frame play a short C–E–G arpeggio once.

Behavior

• Host half is a no-op; all logic is the ./client bundle (dsh.client).
• Subscribes to ctx.sessions.list and chimes on rising edges only
  (undefined → wait, or wait kind change). The first phase: ready snapshot is baseline (no blast on reload).
• connection/reset re-baselines so mux replay after reconnect stays quiet.
• Uses the Web Audio API (no asset files). Browsers may block audio until a click/key; the plugin arms unlock listeners on first load.

Install (this deployment)

Linked from ~/.dsh/profiles/web and inserted in cordis.patch.yml:

- insert:
    - id: pending-sound
      name: dsh-client-ui-pending-sound

Restart the DSH web host after install so the client module graph picks up the bundle.