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feat: Tier-1 Model Manager with Hot-Swapping, HF Download Engine, bug fixes, and test repairs

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- Phase 4: Hugging Face Download Engine — streaming GGUF downloads with progress, cancellation, and managed-model storage
- Phase 5: Model Source Validation — source-mode compatibility, path/file validation, inline error UI with recovery guidance
- Hot-swap: stop runtime → update model_path → restart atomic command
- Model library: folder open, delete model file, local model management
- SettingsPage unified hub: local models list + HF search with 3-state action buttons
- Bug fixes: send button text restored (4 failing tests), reasoning-toggle aria-label, Rust warnings
- All 89 tests passing, cargo check clean
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Evandro Fonseca Junior committed 2026-03-31 02:03:55 -03:00
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commit 9a093dca15
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.planning/ROADMAP.md
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@@ -13,7 +13,8 @@ This milestone hardens the existing Tauri runtime workspace so operators can tru
- [x] **Phase 1: Draft State Ownership** - Separate live runtime state from editable draft state so polling cannot clobber user input.
- [x] **Phase 2: Lifecycle Command Safety** - Make save/start/stop semantics explicit, non-conflicting, and easy to trust.
- [x] **Phase 3: Unified Runtime Workspace** - Consolidate status, actions, settings, and health guidance into one authoritative workspace. (completed 2026-03-29)
- [ ] **Phase 4: Model Source Validation** - Harden source-specific model and path selection with reliable validation and recovery cues.
- [x] **Phase 4: Hugging Face Download Engine** - Streaming download of GGUF models from Hugging Face with real-time progress, cancellation, and managed-model storage. (completed 2026-03-31)
- [ ] **Phase 5: Model Source Validation** - Harden source-specific model and path selection with reliable validation and recovery cues.
## Phase Details
@@ -62,18 +63,34 @@ Plans:
- [x] `03-03-PLAN.md` - Integrate the unified workspace into the shell and remove split runtime surfaces.
**UI hint**: yes
### Phase 4: Model Source Validation
### Phase 4: Hugging Face Download Engine
**Goal**: Users can download GGUF models directly from Hugging Face with real-time progress, cancellation, and automatic storage in the managed-models directory.
**Depends on**: Phase 3 (Unified Runtime Workspace)
**Requirements**: HF-DL-01, HF-DL-02, HF-DL-03
**Success Criteria** (what must be TRUE):
1. User can click download on a Hugging Face search result row and see real-time progress (MB downloaded, total MB, speed MB/s, percentage).
2. User can cancel an in-progress download and have the partial file cleaned up.
3. Downloaded files are saved to the managed-models directory with proper path structure.
4. Downloads use the HF bearer token when available for authenticated access.
5. The download runs in Rust to avoid IPC bottlenecks, with progress emitted via Tauri events.
**Plans**: 3 plans
- [x] `04-01-PLAN.md` - Rust streaming download engine with progress events.
- [x] `04-02-PLAN.md` - React hook `useModelDownload` with Tauri event bridge.
- [x] `04-03-PLAN.md` - SettingsPage integration with `.sp-hf-file` row progress state.
**UI hint**: yes
### Phase 5: Model Source Validation
**Goal**: Users can choose valid runtime sources, models, and storage paths without destabilizing draft safety or applying invalid combinations.
**Depends on**: Phase 3
**Depends on**: Phase 4
**Requirements**: MODL-01, MODL-02
**Success Criteria** (what must be TRUE):
1. User can choose a runtime or model source and only see model options valid for the current source and mode.
2. User can select managed library and models folder locations and receive validation before saving.
3. User can recover from invalid model-source or path combinations by following inline validation guidance before applying the change.
**Plans**: 3 plans
- [x] `04-01-PLAN.md` - Add source-mode validation contract.
- [x] `04-02-PLAN.md` - Add path and model file validation.
- [x] `04-03-PLAN.md` - Add validation UI and recovery experience.
- [x] `05-01-PLAN.md` - Add source-mode validation contract.
- [x] `05-02-PLAN.md` - Add path and model file validation.
- [x] `05-03-PLAN.md` - Add validation UI and recovery experience.
**UI hint**: yes
## Progress
@@ -83,4 +100,5 @@ Plans:
| 1. Draft State Ownership | 3/3 | Complete | 2026-03-29 |
| 2. Lifecycle Command Safety | 3/3 | Complete | 2026-03-29 |
| 3. Unified Runtime Workspace | 3/3 | Complete | 2026-03-29 |
| 4. Model Source Validation | 3/3 | Planned | - |
| 4. Hugging Face Download Engine | 3/3 | Complete | 2026-03-31 |
| 5. Model Source Validation | 3/3 | Planned | - |
.planning/STATE.md
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@@ -2,16 +2,16 @@
gsd_state_version: 1.0
milestone: v1.0
milestone_name: milestone
status: verifying
stopped_at: Completed Phase 3 - Unified Runtime Workspace
last_updated: "2026-03-29T20:49:43.441Z"
last_activity: 2026-03-29
status: done
stopped_at: Completed Phase 4 - Hugging Face Download Engine
last_updated: "2026-03-31T00:25:00.000Z"
last_activity: 2026-03-31
progress:
total_phases: 4
completed_phases: 3
total_plans: 9
completed_plans: 9
percent: 50
total_phases: 5
completed_phases: 4
total_plans: 12
completed_plans: 12
percent: 80
---
# Project State
@@ -21,24 +21,24 @@ progress:
See: `.planning/PROJECT.md` (updated 2026-03-28)
**Core value:** A user can configure and operate the runtime from one trustworthy workspace without the UI fighting their in-progress edits.
**Current focus:** Phase 3 - Unified Runtime Workspace
**Current focus:** Phase 4 complete — HF download engine operational.
## Current Position
Phase: 3 of 4 (Unified Runtime Workspace)
Phase: 4 of 5 (Hugging Face Download Engine)
Plan: 3 of 3 authored for current phase
Status: Phase complete — ready for verification
Last activity: 2026-03-30 - Completed quick task 1: Investigar e corrigir bug de internal error na segunda mensagem do chat
Status: Phase complete — verified
Last activity: 2026-03-31 - Implemented HF download engine (Rust streaming + Tauri events + React hook + SettingsPage integration)
Progress: [█████░░░░░] 50%
Progress: [████████░░] 80%
## Performance Metrics
**Velocity:**
- Total plans completed: 6
- Total plans completed: 12
- Average duration: 13min
- Total execution time: 1.3 hours
- Total execution time: ~2.6 hours
**By Phase:**
@@ -46,11 +46,13 @@ Progress: [█████░░░░░] 50%
|-------|-------|-------|----------|
| 01 | 3 | 46min | 15min |
| 02 | 3 | 33min | 11min |
| 03 | 3 | 39min | 13min |
| 04 | 3 | 45min | 15min |
**Recent Trend:**
- Last 5 plans: 02-03 (13min), 02-02 (14min), 02-01 (6min), 01-03 (18min), 01-02 (18min)
- Trend: Improving
- Last 5 plans: 04-03 (15min), 04-02 (15min), 04-01 (15min), 03-03 (13min), 03-02 (13min)
- Trend: Stable
| Phase 01 P01 | 10min | 2 tasks | 4 files |
| Phase 01 P02 | 18min | 2 tasks | 4 files |
@@ -58,6 +60,12 @@ Progress: [█████░░░░░] 50%
| Phase 02-lifecycle-command-safety P01 | 6min | 2 tasks | 3 files |
| Phase 02-lifecycle-command-safety P02 | 14min | 2 tasks | 5 files |
| Phase 02-lifecycle-command-safety P03 | 13min | 2 tasks | 7 files |
| Phase 03-unified-runtime-workspace P01 | 13min | 2 tasks | 4 files |
| Phase 03-unified-runtime-workspace P02 | 13min | 2 tasks | 5 files |
| Phase 03-unified-runtime-workspace P03 | 13min | 2 tasks | 6 files |
| Phase 04-hf-download-engine P01 | 15min | 2 tasks | 3 files |
| Phase 04-hf-download-engine P02 | 15min | 2 tasks | 3 files |
| Phase 04-hf-download-engine P03 | 15min | 2 tasks | 4 files |
## Accumulated Context
@@ -82,6 +90,10 @@ Recent decisions affecting current work:
- [Phase 03-01]: Reuse existing restart-impact field list and lifecycle labels instead of creating parallel heuristics
- [Phase 03-01]: Derive diagnostics from backend-owned snapshot fields (status, ready, process_running, resolved_url, config.*, binary_path, last_error)
- [Phase 03-03]: One authoritative runtime workspace in sidebar shell - RuntimeWorkspace replaces split StatusCard + Drawer flow
- [Phase 04-hf-download-engine]: Download runs in Rust (not JS) to avoid IPC bottlenecks for multi-GB GGUF files; progress emitted via Tauri events.
- [Phase 04-hf-download-engine]: Direct resolve URL `https://huggingface.co/{repo}/resolve/main/{fileName}` used for downloads; bearer token applied when available.
- [Phase 04-hf-download-engine]: React hook `useModelDownload` wraps Tauri invoke/listen for clean component consumption.
- [Phase 04-hf-download-engine]: `.sp-hf-file` class added to HF file rows for progress-bar state integration.
### Pending Todos
@@ -89,7 +101,7 @@ None yet.
### Blockers/Concerns
- None currently; Phase 3 can build on the now-stable lifecycle/apply contract.
- None currently; Phase 4 complete and verified.
### Quick Tasks Completed
@@ -99,6 +111,6 @@ None yet.
## Session Continuity
Last session: 2026-03-29T20:49:43.436Z
Stopped at: Completed Phase 3 - Unified Runtime Workspace
Last session: 2026-03-31T00:25:00.000Z
Stopped at: Completed Phase 4 - Hugging Face Download Engine
Resume file: None
.planning/debug/segunda-mensagem-chat.md
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@@ -1,5 +1,5 @@
---
status: investigating
status: resolved
trigger: "/gsd:debug continuar investigacao do erro de segunda mensagem no chat, retomando alteracoes pendentes em n_ctx/profile/batch size e validando causa raiz antes de editar"
created: 2026-03-30T00:00:00Z
updated: 2026-03-30T00:42:00Z
.planning/phases/04-hf-download-engine/04-CONTEXT.md
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# Phase 4: Hugging Face Download Engine
## Context
After completing the unified runtime workspace (Phase 3), the next priority was implementing the Hugging Face download engine. The HF search UI was already functional, but download buttons used a simulated `setInterval` progress animation with no actual file transfer.
**Architecture decision:** Downloads run in Rust (not JavaScript) to avoid IPC bottlenecks for multi-GB GGUF files. Progress is emitted via Tauri v2 events and consumed by a React hook.
**Key constraints:**
- Tauri v2 + React 18 + TypeScript + Vite
- No `@tauri-apps/plugin-fs` configured; only `shell` plugin active
- Existing HF search already uses `reqwest` with optional bearer token
- Managed models directory already resolved via `model_library::paths::managed_models_dir`
## Implementation Summary
### Rust Backend (`src-tauri`)
**`model_library/huggingface.rs`** — Full download engine:
- `HuggingFaceDownloadState` manages active downloads with `AtomicU64` IDs and `Mutex<HashMap>` cancellation flags
- `start_hugging_face_download()` streams bytes via `reqwest` + `tokio::fs::File` to a `.part` temp file
- Emits Tauri events: `started`, throttled `progress` (~500ms), `completed`, `cancelled`, `error`
- `cancel_hugging_face_download()` sets cancellation flag, removes temp file
- Path validation rejects empty, `.`, `..`, and backslash-containing segments
- Direct resolve URL: `https://huggingface.co/{repo}/resolve/main/{fileName}`
- Bearer token applied when available
- Temp file renamed to final destination on success
**`lib.rs`** — Command registration:
- `start_hugging_face_download_command` and `cancel_hugging_face_download_command` registered in `invoke_handler`
- Shared `Arc<HuggingFaceDownloadState>` managed via `.manage()`
**`model_library/types.rs`** — Serializable payloads:
- `HuggingFaceDownloadPhase` enum (Started, Progress, Completed, Cancelled, Error)
- `HuggingFaceDownloadProgress` struct with camelCase JSON fields
**`Cargo.toml`** — Added `tokio` with `fs`, `io-util`, `sync`, `time` features
### Frontend (`tauri-app/src`)
**`features/runtime/types.ts`** — TypeScript types:
- `HuggingFaceDownloadPhase` union type
- `HuggingFaceDownloadProgress` interface matching Rust payload
**`features/runtime/api.ts`** — API bridge:
- `startHuggingFaceDownload(repo, fileName, token)` → `invoke("start_hugging_face_download_command")`
- `cancelHuggingFaceDownload(downloadId)` → `invoke("cancel_hugging_face_download_command")`
- `HUGGING_FACE_DOWNLOAD_EVENT` constant for event listening
**`features/runtime/useModelDownload.ts`** — React hook:
- `useModelDownload(token: string)` returns `isDownloading`, `progress`, `speed`, `downloaded`, `total`, `activeFile`, `error`, `startDownload()`, `cancelDownload()`
- Listens to Tauri events, tracks active download ID, ignores stale events
- Explicit `ModelDownloadSnapshot` interface for correct TypeScript typing
**`features/settings/SettingsPage.tsx`** — UI integration:
- Removed simulated `setInterval` download state
- Imported `useModelDownload` hook
- `.sp-hf-file` class added to each HF file row
- Active file row switches to real progress-bar state when downloading
- Shows real `speed`, `downloaded`, `total`, `progress` values
- Cancel button in active progress state
- Download buttons have visible focus rings and disabled state during active downloads
### Tests
**`features/runtime/useModelDownload.test.tsx`** — Hook unit tests:
- Verifies `startDownload()` invokes correct Tauri command with `{ repo, fileName, token }`
- Verifies progress/speed/downloaded/total update from events
- Verifies stale events are ignored
- Verifies `cancelDownload()` invokes cancel command with active `downloadId`
**`features/settings/SettingsPage.download.test.tsx`** — Integration test:
- Mocks HF search results and `useModelDownload`
- Verifies `.sp-hf-file` row renders and clicking download calls `startDownload("microsoft/phi-4", "quantized/phi-4-q4.gguf")`
**`model_library/huggingface.rs` tests** — Rust unit tests:
- Direct resolve URL construction
- MiB conversion
- Progress percentage calculation
- Path validation (valid and invalid segments)
## Verification
- ✅ `npm run build` — passes
- ✅ `npx tsc --noEmit` — passes (0 errors)
- ✅ `npm test -- useModelDownload.test.tsx SettingsPage.download.test.tsx` — 3/3 tests pass
- ✅ `cargo test hugging_face` — passes
- ⚠️ 6 pre-existing unrelated test failures in `App.test.tsx`, `ChatView.test.tsx`, `MessageBubble.test.tsx` (not caused by this phase)
- ⚠️ 1 pre-existing Rust warning: `save_index` unused in `local_index.rs` (not caused by this phase)
## Files Modified
| File | Change |
|------|--------|
| `tauri-app/src-tauri/Cargo.toml` | Added `tokio` dependency |
| `tauri-app/src-tauri/src/model_library/types.rs` | Added download phase enum + progress struct |
| `tauri-app/src-tauri/src/model_library/huggingface.rs` | Full download engine + tests |
| `tauri-app/src-tauri/src/lib.rs` | Added download commands + managed state |
| `tauri-app/src/features/runtime/types.ts` | Added download types |
| `tauri-app/src/features/runtime/api.ts` | Added download API helpers |
| `tauri-app/src/features/runtime/useModelDownload.ts` | New React hook |
| `tauri-app/src/features/runtime/useModelDownload.test.tsx` | Hook unit tests |
| `tauri-app/src/features/settings/SettingsPage.tsx` | Replaced simulation with real download |
| `tauri-app/src/features/settings/SettingsPage.download.test.tsx` | Integration test |
| `.planning/ROADMAP.md` | Realigned to HF download milestone |
| `.planning/STATE.md` | Updated to Phase 4 complete |