Codex independent review found 11 blockers post-cascade. All addressed.
CRITICAL (data-loss / crash):
10. crates/core/src/paths.rs — migrate_legacy_data_dir_inner used
fs::rename which fails with EXDEV when source + target are on
different filesystems (encrypted-home, bind mounts, separate
$XDG_DATA_HOME partition). Combined with the Phase 5 QC fix that
made migration errors fatal, this would crash on first launch
for any user whose data dir spans filesystems. Added
rename_or_copy_tree() that falls back to copy_dir_recursive +
remove_dir_all on CrossesDevices / errno 18 (EXDEV). Symlinks
preserved verbatim. Same fallback applied to magnotia.db ->
lumotia.db inside the dir.
11. Added 4 unit tests: copy_dir_recursive preserves nested
structure, rename_or_copy_tree same-filesystem happy path,
is_cross_device classifies CrossesDevices kind + raw errno 18.
Doc residuals (blockers 1-9):
1. crates/cloud-providers/Cargo.toml — "Wyrdnote pending rebrand"
description.
2. crates/cloud-providers/src/provider.rs — module docs + test
fixture Wyrdnote refs.
3. crates/transcription/src/orchestrator.rs — module docs + test
fixture Wyrdnote refs.
4. docs/roadmap/2026-05-10-pkm-phase-tooling-shortlist.md — phase
name + outputs/wyrdnote path refs.
5. docs/architecture-map/04-llm-formatting-mcp/llm-tests.md —
MAGNOTIA_LLM_TEST_MODEL env var.
6. .../cloud-providers-stubs.md — MAGNOTIA_API_KEY_*.
7. docs/architecture-map/03-audio-transcription/tests-and-fixtures.md
— MAGNOTIA_WHISPER_*.
8. docs/gpu-tuning/plan.md — MAGNOTIA_BENCH_RUN.
9. docs/superpowers/specs/2026-05-09-battery-gpu-aware-thread-tuning-
design.md + corresponding plan — MAGNOTIA_POWER_STATE_OVERRIDE,
MAGNOTIA_INFERENCE_THREADS.
cargo test --workspace: 343 pass / 0 fail (up from 339; +4 EXDEV
fallback tests).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Spec for two new clamps on the existing inference_thread_count helper:
- Battery clamp: drop to physical/2 when on battery (Linux sysfs probe;
macOS/Windows return Unknown, treated as OnAc).
- GPU-offload clamp: 2 threads for fully-offloaded LLM, 4 for Whisper
(Whisper keeps mel spectrogram, decoder bookkeeping, and beam search
on CPU even with full Vulkan offload).
Codex + online-research consult: no prior art in llama.cpp, Ollama,
Jan, or mistral.rs. Apple's Low Power Mode is OS-level (P-core
frequency cap), not a published software API. Lumenote would be first
in the open Rust inference-wrapper space; instrumentation matters,
hence the thread_sweep.rs extension + per-process INFO log.
Architecture (Approach B):
- New crates/core/src/power.rs (PowerState, sysfs probe, 10s TTL).
- New crates/core/src/tuning.rs (Workload enum, helper).
- Move vulkan_loader_available() from src-tauri to magnotia-core
so crates/transcription can call it without a Tauri dep.
- Existing constants::inference_thread_count() becomes deprecated
facade for one commit, then removed.
GPU-offload detection is intent-based (use_gpu && requested_layers
>= model.n_layer() for LLM; cfg(whisper-vulkan) && libvulkan
resolvable for Whisper). Residency-based detection deferred:
llama-cpp-2 0.1.145 doesn't expose post-load offload count, so a
true outcome flag would need llama_log_set callback parsing or an
upstream PR. Caveat documented in the spec.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
