agent: lumotia-rebrand — rust workspace crates magnotia-* -> lumotia-*

Phase 2 of the rebrand cascade. Renames all 9 workspace crates from
magnotia-* to lumotia-* plus the src-tauri binary crate name:

- magnotia-ai-formatting   -> lumotia-ai-formatting
- magnotia-audio           -> lumotia-audio
- magnotia-cloud-providers -> lumotia-cloud-providers
- magnotia-core            -> lumotia-core
- magnotia-hotkey          -> lumotia-hotkey
- magnotia-llm             -> lumotia-llm
- magnotia-mcp             -> lumotia-mcp
- magnotia-storage         -> lumotia-storage
- magnotia-transcription   -> lumotia-transcription
- magnotia                 -> lumotia (src-tauri binary)
- magnotia_lib             -> lumotia_lib (src-tauri lib target)

Crate directories (crates/audio/ etc.) stay as-is; only the Cargo.toml
[package] name field changes plus all consumer module imports
(magnotia_core -> lumotia_core, etc.).

Remaining magnotia_* references at this point are intentional and
scoped to later phases: tracing targets (Phase 4), DB setting keys
magnotia_preferences/magnotia_history (Phase 5).

cargo build --workspace passes. cargo test --workspace: 330 pass, 0 fail.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src-tauri/src/commands/hotkey.rs

@@ -3,7 +3,7 @@ use std::sync::Arc;
 use tauri::Emitter;
 use tokio::sync::{mpsc, Mutex};
 
-use magnotia_hotkey::{EvdevHotkeyListener, HotkeyCombo, HotkeyEvent};
+use lumotia_hotkey::{EvdevHotkeyListener, HotkeyCombo, HotkeyEvent};
 
 /// Managed state for the evdev hotkey listener.
 pub struct HotkeyState {
@@ -30,7 +30,7 @@ pub fn is_wayland_session() -> bool {
 /// Check whether evdev hotkey capture is available (user in `input` group, etc.).
 #[tauri::command]
 pub fn check_hotkey_access() -> Result<(), String> {
-    magnotia_hotkey::check_evdev_access()
+    lumotia_hotkey::check_evdev_access()
 }
 
 /// Start the evdev global hotkey listener. Emits "magnotia:hotkey-pressed" and