agent: lumotia-rebrand — fix QC blockers for phase 2

Phase 2 QC found three explicit blockers + a broader sweep needed:

Explicit (QC-named):
- crates/mcp/src/lib.rs:15 — SERVER_NAME public MCP wire identity
- crates/transcription/build.rs:59 — panic message prefix
- crates/llm/tests/content_tags_smoke.rs:7 — docstring -p flag

Swept (string literals + dev env vars + doc comments + test fixtures):
- crates/mcp/src/main.rs — eprintln log prefixes
- src-tauri/src/commands/diagnostics.rs — diagnostic filename + MAGNOTIA_VERSION
- src-tauri/src/commands/audio.rs — recording filename pattern lumotia-<secs>-...wav
- src-tauri/src/commands/fs.rs — test placeholder path
- crates/transcription/src/model_manager.rs — .lumotia-verified marker
- crates/storage/src/database.rs — lumotia-storage-ro-<pid> temp dirs + doc comments
- crates/cloud-providers/src/keystore.rs — LUMOTIA_API_KEY_<PROVIDER> env var
- crates/audio/src/{wav,decode}.rs — lumotia_test_* / lumotia_decode_* test fixtures
- crates/core/src/tuning.rs — LUMOTIA_INFERENCE_THREADS env var
- All MAGNOTIA_LLM_TEST_MODEL / MAGNOTIA_WHISPER_TEST_* env vars
- Doc comments referencing crate names

Excluded (intentional Phase 4/5 scope):
- magnotia_preferences, magnotia_history, magnotia_morning_triage_last_shown
  DB setting keys (Phase 5 paths.rs migration)
- magnotia_startup tracing target (Phase 4)
- crates/core/src/paths.rs (Phase 5 wholesale rewrite + migration shim)

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/tests/jfk_bench.rs

@@ -2,20 +2,20 @@
 //! Reports cold-load time, transcribe time, RTF, peak RSS.
 //!
 //! Gated on env vars so it never runs in CI without setup:
-//!   MAGNOTIA_WHISPER_TEST_MODEL=/path/to/ggml-tiny.bin
-//!   MAGNOTIA_WHISPER_TEST_AUDIO=/path/to/jfk.wav
+//!   LUMOTIA_WHISPER_TEST_MODEL=/path/to/ggml-tiny.bin
+//!   LUMOTIA_WHISPER_TEST_AUDIO=/path/to/jfk.wav
 
 use std::env;
 use std::time::Instant;
 
 #[test]
 fn jfk_transcription_benchmark() {
-    let Ok(model_path) = env::var("MAGNOTIA_WHISPER_TEST_MODEL") else {
-        eprintln!("MAGNOTIA_WHISPER_TEST_MODEL not set — skipping");
+    let Ok(model_path) = env::var("LUMOTIA_WHISPER_TEST_MODEL") else {
+        eprintln!("LUMOTIA_WHISPER_TEST_MODEL not set — skipping");
         return;
     };
-    let Ok(audio_path) = env::var("MAGNOTIA_WHISPER_TEST_AUDIO") else {
-        eprintln!("MAGNOTIA_WHISPER_TEST_AUDIO not set — skipping");
+    let Ok(audio_path) = env::var("LUMOTIA_WHISPER_TEST_AUDIO") else {
+        eprintln!("LUMOTIA_WHISPER_TEST_AUDIO not set — skipping");
         return;
     };
 

crates/transcription/tests/thread_sweep.rs

@@ -1,8 +1,8 @@
 //! Thread-count scaling sweep for Whisper Tiny.
 //! Runs the JFK clip at n_threads = 1, 2, 4, 6, 8, 12, prints RTF tables.
-//! Env-gated by `MAGNOTIA_WHISPER_TEST_MODEL` + `MAGNOTIA_WHISPER_TEST_AUDIO`.
+//! Env-gated by `LUMOTIA_WHISPER_TEST_MODEL` + `LUMOTIA_WHISPER_TEST_AUDIO`.
 //!
-//! Now prints multiple panels driven by `MAGNOTIA_POWER_STATE_OVERRIDE` so
+//! Now prints multiple panels driven by `LUMOTIA_POWER_STATE_OVERRIDE` so
 //! the helper's predicted thread count for each (power, GPU) combination
 //! can be compared against the empirical RTF data.
 
@@ -15,10 +15,10 @@ use whisper_rs::{FullParams, SamplingStrategy, WhisperContext, WhisperContextPar
 
 #[test]
 fn whisper_thread_count_sweep() {
-    let Ok(model_path) = env::var("MAGNOTIA_WHISPER_TEST_MODEL") else {
+    let Ok(model_path) = env::var("LUMOTIA_WHISPER_TEST_MODEL") else {
         return;
     };
-    let Ok(audio_path) = env::var("MAGNOTIA_WHISPER_TEST_AUDIO") else {
+    let Ok(audio_path) = env::var("LUMOTIA_WHISPER_TEST_AUDIO") else {
         return;
     };
 
@@ -71,7 +71,7 @@ fn whisper_thread_count_sweep() {
     );
 
     // Four panels: CPU and GPU axes for the predicted-helper-pick column,
-    // crossed with AC and battery via MAGNOTIA_POWER_STATE_OVERRIDE.
+    // crossed with AC and battery via LUMOTIA_POWER_STATE_OVERRIDE.
     let panels = [
         ("AC, CPU", "ac", false),
         ("AC, GPU (Vulkan)", "ac", true),
@@ -80,11 +80,11 @@ fn whisper_thread_count_sweep() {
     ];
 
     for (label, power, gpu_offloaded_for_helper) in panels {
-        env::set_var("MAGNOTIA_POWER_STATE_OVERRIDE", power);
+        env::set_var("LUMOTIA_POWER_STATE_OVERRIDE", power);
         let helper_pick = inference_thread_count(Workload::Whisper, gpu_offloaded_for_helper);
         run_sweep_panel(label, helper_pick, &ctx, &samples, audio_secs, &targets);
     }
-    env::remove_var("MAGNOTIA_POWER_STATE_OVERRIDE");
+    env::remove_var("LUMOTIA_POWER_STATE_OVERRIDE");
 }
 
 fn run_sweep_panel(

crates/transcription/tests/whisper_rs_smoke.rs

@@ -1,17 +1,17 @@
 //! Smoke test: whisper-rs 0.16 loads a GGUF model, transcribes silence, and
 //! accepts set_initial_prompt without panicking.
 //!
-//! Runs only when `MAGNOTIA_WHISPER_TEST_MODEL` is set to the path of a
+//! Runs only when `LUMOTIA_WHISPER_TEST_MODEL` is set to the path of a
 //! ggml/gguf whisper model on disk. Otherwise the test exits quiet.
 
 use std::env;
 
 #[test]
 fn whisper_rs_smoke_loads_and_transcribes() {
-    let model_path = match env::var("MAGNOTIA_WHISPER_TEST_MODEL") {
+    let model_path = match env::var("LUMOTIA_WHISPER_TEST_MODEL") {
         Ok(p) => p,
         Err(_) => {
-            eprintln!("MAGNOTIA_WHISPER_TEST_MODEL not set — skipping");
+            eprintln!("LUMOTIA_WHISPER_TEST_MODEL not set — skipping");
             return;
         }
     };