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/lib.rs

@@ -12,15 +12,15 @@ use sqlx::SqlitePool;
 use tauri::Manager;
 use tracing_subscriber::EnvFilter;
 
-use magnotia_core::types::EngineName;
-use magnotia_llm::LlmEngine;
-use magnotia_storage::{database_path, get_setting, init as init_db, prune_error_log, set_setting};
+use lumotia_core::types::EngineName;
+use lumotia_llm::LlmEngine;
+use lumotia_storage::{database_path, get_setting, init as init_db, prune_error_log, set_setting};
 
 /// How long to retain `error_log` rows. Pruned once on startup.
 /// 90 days is long enough to triage "this happened a few weeks ago"
 /// reports and short enough that the table stays kilobyte-scale.
 const ERROR_LOG_RETENTION_DAYS: i64 = 90;
-use magnotia_transcription::LocalEngine;
+use lumotia_transcription::LocalEngine;
 
 static TRACING_INIT: Once = Once::new();
 
@@ -162,7 +162,7 @@ fn init_tracing() {
     TRACING_INIT.call_once(|| {
         let env_filter = EnvFilter::try_from_default_env().unwrap_or_else(|_| {
             EnvFilter::new(
-                "warn,magnotia=info,magnotia_lib=info,magnotia_audio=info,magnotia_startup=info,magnotia_hotkey=info,magnotia_ai_formatting=info",
+                "warn,magnotia=info,lumotia_lib=info,lumotia_audio=info,magnotia_startup=info,lumotia_hotkey=info,lumotia_ai_formatting=info",
             )
         });