add wispctl control CLI

[0xferrous]

wispd should provide a scriptable control CLI, similar in spirit to makoctl, for querying and
controlling the running daemon.

Why

A control CLI is useful for:

• keybindings / compositor integration
• scripting and automation
• debugging and inspection
• interacting with live notifications, notification center state, and history without relying only on
  UI

Initial scope

wispctl should likely cover at least:

• list — list current/live notifications
• dismiss — dismiss one / current / all notifications
• invoke — invoke default or named action for a notification
• reload — reload daemon config
• history — inspect stored notification history

Design notes

• unlike makoctl, a built-in menu subcommand likely does not make sense here
• instead, wispctl should expose solid query/action primitives and machine-readable output so users
  can compose external selectors themselves
• wispctl should be designed around wispd’s richer model:
  • live popup stack
  • notification center
  • history

Output / API expectations

• human-readable output by default
• --json for scripting/integration
• stable selection semantics by:
  • notification id
  • current/topmost/latest where applicable
  • app/group later where applicable

Likely implementation areas

• a daemon control API/IPC surface in wisp-source / wispd
• new wispctl binary
• command/query paths for live, center, and history state

Acceptance criteria

• users can query and control the running daemon from the CLI
• core notification actions (list, dismiss, invoke, reload) are available
• history inspection is available
• machine-readable output is supported for scripting