Closes the "GUI shows GUI process state, not daemon's" gap. Now GUI can:
1. Tell the daemon to swap LLM backend via IPC (so the running listener
uses the new backend immediately, not just the GUI process).
2. Tell the daemon to re-read llm_backend from settings DB after GUI persists
a choice independently.
3. Query the daemon's true runtime state (TTS/LLM/profile/memory/scheduler
counts/language/version) for an honest footer + diagnostics view.
IpcAction (new variants)
- SwitchLlm { backend: String } — daemon calls llm::swap_to(parse(backend))
- ReloadLlm — daemon calls llm::init_global() to re-read DB
- QueryHealth — daemon responds with HealthSnapshot
IpcEvent (new variant)
- HealthSnapshot { tts_backend, llm_backend, llm_model, active_profile,
memory_facts, scheduled_tasks, language, version }
jarvis-app main.rs
- Imports IpcEvent (was only IpcAction before).
- Three new match arms in ipc action handler — all use existing globals,
no new state needed.
Next step (TODO): wire GUI's set_llm_backend Tauri command to ALSO fire
IpcAction::SwitchLlm so daemon stays in sync. And replace Footer.svelte's
get_active_backends call with QueryHealth over IPC.
Build: cargo build --release -p jarvis-app -p jarvis-gui green.
Tests: 62/62 pass (unchanged — IPC variants don't add testable logic).
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