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/Cargo.toml

@@ -1,22 +1,22 @@
 [package]
-name = "magnotia"
+name = "lumotia"
 version = "0.1.0"
-description = "Magnotia — Think out loud"
+description = "Lumotia — Think out loud"
 authors = ["CORBEL Ltd"]
 edition = "2021"
 
 [lib]
-name = "magnotia_lib"
+name = "lumotia_lib"
 crate-type = ["staticlib", "cdylib", "rlib"]
 
 [features]
 # Default build includes the Whisper backend. Disabling this feature
-# also drops it from magnotia-transcription (see Cargo.toml in that crate)
+# also drops it from lumotia-transcription (see Cargo.toml in that crate)
 # so a --no-default-features workspace build does not pull whisper-rs-sys.
 # load_model_from_disk returns a runtime error for Engine::Whisper when
 # this feature is off; Parakeet continues to work.
 default = ["whisper"]
-whisper = ["magnotia-transcription/whisper"]
+whisper = ["lumotia-transcription/whisper"]
 
 [build-dependencies]
 tauri-build = { version = "2", features = [] }
@@ -28,14 +28,14 @@ serde_json = "1"
 
 [dependencies]
 # Workspace crates
-magnotia-core = { path = "../crates/core" }
-magnotia-audio = { path = "../crates/audio" }
-magnotia-transcription = { path = "../crates/transcription", default-features = false }
-magnotia-ai-formatting = { path = "../crates/ai-formatting" }
-magnotia-storage = { path = "../crates/storage" }
-magnotia-cloud-providers = { path = "../crates/cloud-providers" }
-magnotia-hotkey = { path = "../crates/hotkey" }
-magnotia-llm = { path = "../crates/llm" }
+lumotia-core = { path = "../crates/core" }
+lumotia-audio = { path = "../crates/audio" }
+lumotia-transcription = { path = "../crates/transcription", default-features = false }
+lumotia-ai-formatting = { path = "../crates/ai-formatting" }
+lumotia-storage = { path = "../crates/storage" }
+lumotia-cloud-providers = { path = "../crates/cloud-providers" }
+lumotia-hotkey = { path = "../crates/hotkey" }
+lumotia-llm = { path = "../crates/llm" }
 
 # Tauri. The `tray-icon` feature, the global-shortcut/window-state/
 # autostart plugins are desktop-only — gated below under