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>

crates/transcription/src/model_manager.rs

@@ -2,9 +2,9 @@ use std::collections::HashSet;
 use std::path::{Path, PathBuf};
 use std::sync::{LazyLock, Mutex};
 
-use magnotia_core::error::{MagnotiaError, Result};
-use magnotia_core::model_registry::{find_model, ModelFile};
-use magnotia_core::types::{DownloadProgress, ModelId};
+use lumotia_core::error::{MagnotiaError, Result};
+use lumotia_core::model_registry::{find_model, ModelFile};
+use lumotia_core::types::{DownloadProgress, ModelId};
 
 static ACTIVE_DOWNLOADS: LazyLock<Mutex<HashSet<String>>> =
     LazyLock::new(|| Mutex::new(HashSet::new()));
@@ -40,12 +40,12 @@ impl Drop for DownloadReservation {
 /// Windows: %LOCALAPPDATA%/magnotia/models
 /// Unix: ~/.magnotia/models
 pub fn models_dir() -> PathBuf {
-    magnotia_core::paths::app_paths().models_dir()
+    lumotia_core::paths::app_paths().models_dir()
 }
 
 /// Get the directory path where a specific model's files are stored.
 pub fn model_dir(id: &ModelId) -> PathBuf {
-    magnotia_core::paths::app_paths().speech_model_dir(id)
+    lumotia_core::paths::app_paths().speech_model_dir(id)
 }
 
 /// Check whether all files for a model have been downloaded.
@@ -61,7 +61,7 @@ pub fn is_downloaded(id: &ModelId) -> bool {
 
 /// List all downloaded model IDs.
 pub fn list_downloaded() -> Vec<ModelId> {
-    magnotia_core::model_registry::all_models()
+    lumotia_core::model_registry::all_models()
         .iter()
         .filter(|m| is_downloaded(&m.id))
         .map(|m| m.id.clone())
@@ -117,7 +117,7 @@ fn verified_manifest_path(dir: &Path) -> PathBuf {
 }
 
 fn verified_manifest_matches(
-    entry: &magnotia_core::model_registry::ModelEntry,
+    entry: &lumotia_core::model_registry::ModelEntry,
     dir: &Path,
 ) -> bool {
     let manifest = match std::fs::read_to_string(verified_manifest_path(dir)) {
@@ -140,7 +140,7 @@ fn verified_manifest_matches(
 }
 
 fn write_verified_manifest(
-    entry: &magnotia_core::model_registry::ModelEntry,
+    entry: &lumotia_core::model_registry::ModelEntry,
     dir: &Path,
 ) -> std::io::Result<()> {
     let mut lines = Vec::with_capacity(entry.files.len() + 1);
@@ -357,7 +357,7 @@ mod tests {
         let list = list_downloaded();
         // In test environment, no models are downloaded
         // This just verifies the function doesn't panic
-        assert!(list.len() <= magnotia_core::model_registry::all_models().len());
+        assert!(list.len() <= lumotia_core::model_registry::all_models().len());
     }
 
     #[test]
@@ -481,7 +481,7 @@ mod tests {
         let file = ModelFile {
             filename: leak(dest.file_name().unwrap().to_string_lossy().into_owned()),
             url: leak(format!("http://{addr}/fixture.bin")),
-            size: magnotia_core::types::Megabytes(0),
+            size: lumotia_core::types::Megabytes(0),
             sha256: leak(expected_sha.clone()),
         };
         let id = ModelId::new("test-fixture");
@@ -516,7 +516,7 @@ mod tests {
         let file = ModelFile {
             filename: leak(dest.file_name().unwrap().to_string_lossy().into_owned()),
             url: leak(format!("http://{addr}/fixture.bin")),
-            size: magnotia_core::types::Megabytes(0),
+            size: lumotia_core::types::Megabytes(0),
             sha256: leak(expected_sha),
         };
         let id = ModelId::new("test-fixture");
@@ -571,7 +571,7 @@ mod tests {
         let file = ModelFile {
             filename: leak(dest.file_name().unwrap().to_string_lossy().into_owned()),
             url: leak(format!("http://{addr}/fixture.bin")),
-            size: magnotia_core::types::Megabytes(0),
+            size: lumotia_core::types::Megabytes(0),
             sha256: leak("0".repeat(64)),
         };
         let id = ModelId::new("test-fixture");
@@ -599,7 +599,7 @@ mod tests {
         let file = ModelFile {
             filename: leak(dest.file_name().unwrap().to_string_lossy().into_owned()),
             url: leak(format!("http://{addr}/fixture.bin")),
-            size: magnotia_core::types::Megabytes(0),
+            size: lumotia_core::types::Megabytes(0),
             sha256: leak("deadbeef".repeat(8)),
         };
         let id = ModelId::new("test-fixture");