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/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "magnotia-transcription"
+name = "lumotia-transcription"
 version = "0.1.0"
 edition = "2021"
 description = "Speech-to-text engine wrappers, model management, and inference concurrency for Magnotia"
@@ -15,18 +15,18 @@ build = "build.rs"
 # `whisper-vulkan` is a separate feature so a non-Vulkan target (Android
 # without GPU drivers, a CPU-only Windows build) can pull in whisper-rs
 # but skip the Vulkan backend. Build CPU-only with:
-#   cargo build -p magnotia-transcription --no-default-features --features whisper
+#   cargo build -p lumotia-transcription --no-default-features --features whisper
 default = ["whisper", "whisper-vulkan"]
 whisper = ["dep:whisper-rs"]
 whisper-vulkan = ["whisper-rs?/vulkan"]
 
 [dependencies]
-magnotia-core = { path = "../core" }
+lumotia-core = { path = "../core" }
 
 # TranscriptionProvider async trait + EngineProfile + ProviderId. The
 # trait lives in cloud-providers so an OEM licensee can implement it
 # without depending on transcription internals.
-magnotia-cloud-providers = { path = "../cloud-providers" }
+lumotia-cloud-providers = { path = "../cloud-providers" }
 
 # Async-trait for the LocalProviderAdapter impl.
 async-trait = "0.1"
@@ -57,12 +57,12 @@ thiserror = "2"
 tracing = "0.1"
 
 [dev-dependencies]
-# TcpListener fixture for the download resume tests (mirrors magnotia-llm).
+# TcpListener fixture for the download resume tests (mirrors lumotia-llm).
 # `macros` and `rt-multi-thread` enable #[tokio::test] and the multi-threaded
 # scheduler used by the orchestrator tests.
 tokio = { version = "1", features = ["rt", "rt-multi-thread", "sync", "net", "io-util", "macros"] }
 tempfile = "3"
 # Test-only — used by tests/thread_sweep.rs to label physical vs logical
 # core counts in the scaling table. Production code uses the
-# `magnotia_core::constants::inference_thread_count` helper instead.
+# `lumotia_core::constants::inference_thread_count` helper instead.
 num_cpus = "1"