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/tasks.rs

@@ -1,4 +1,4 @@
-// Tauri commands wrapping magnotia_storage task CRUD.
+// Tauri commands wrapping lumotia_storage task CRUD.
 // Pattern mirrors transcripts.rs — TaskDto is the camelCase frontend shape,
 // storage functions are aliased with db_ prefix to avoid name collisions.
 
@@ -6,8 +6,8 @@ use serde::{Deserialize, Serialize};
 
 use uuid::Uuid;
 
-use magnotia_llm::prompts::FeedbackExample as LlmFeedbackExample;
-use magnotia_storage::{
+use lumotia_llm::prompts::FeedbackExample as LlmFeedbackExample;
+use lumotia_storage::{
     complete_subtask_and_check_parent as db_complete_subtask, complete_task as db_complete_task,
     delete_task as db_delete_task, get_task_by_id as db_get_task,
     insert_subtask as db_insert_subtask, insert_task as db_insert_task,
@@ -228,7 +228,7 @@ fn to_llm_examples(rows: Vec<FeedbackRow>) -> Vec<LlmFeedbackExample> {
                 Ok(v) => v,
                 Err(e) => {
                     tracing::warn!(
-                        target: "magnotia_lib::feedback",
+                        target: "lumotia_lib::feedback",
                         row_id = r.id,
                         error = %e,
                         "skipping feedback row with malformed context_json"