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/transcripts.rs

@@ -1,4 +1,4 @@
-// Tauri commands wrapping the magnotia_storage transcript CRUD.
+// Tauri commands wrapping the lumotia_storage transcript CRUD.
 // These are the bridge that lets the Svelte frontend treat SQLite as the
 // canonical store rather than localStorage.
 //
@@ -13,7 +13,7 @@
 
 use serde::{Deserialize, Serialize};
 
-use magnotia_storage::{
+use lumotia_storage::{
     delete_transcript as db_delete_transcript, get_transcript as db_get_transcript,
     insert_transcript as db_insert_transcript, list_transcripts_paged,
     search_transcripts as db_search_transcripts, update_transcript as db_update_transcript,
@@ -110,7 +110,7 @@ pub async fn add_transcript(
         profile_id: transcript
             .profile_id
             .as_deref()
-            .unwrap_or(magnotia_storage::DEFAULT_PROFILE_ID),
+            .unwrap_or(lumotia_storage::DEFAULT_PROFILE_ID),
         title: transcript.title.as_deref(),
         audio_path: transcript.audio_path.as_deref(),
         duration: transcript.duration,