status: passed
phase: 5
name: Model Source Validation
date: 2026-04-02

## Verification Summary

All Phase 5 success criteria are met by existing implementation.

## Success Criteria Verification

### 1. User can choose a runtime or model source and only see model options valid for the current source and mode.
- ✓ `validateSourceMode()` in runtime-utils.ts validates source/mode combinations
- ✓ Field validations block invalid combinations before apply
- ✓ useRuntimeManager integrates validation on every draft state change

### 2. User can select managed library and models folder locations and receive validation before saving.
- ✓ `validateModelsDirectory()` validates directory paths async
- ✓ `validateModelPath()` validates model file paths
- ✓ Validation runs before draft is applied to live state

### 3. User can recover from invalid model-source or path combinations by following inline validation guidance before applying the change.
- ✓ Field-level validation errors displayed inline in RuntimeSettingsDrawer
- ✓ Apply button blocked when validation errors exist
- ✓ Recovery guidance shown per field

## Implementation Evidence

- `tauri-app/src/features/runtime/runtime-utils.ts` — validateSourceMode, validateModelPath, validateModelsDirectory, validateModelFile
- `tauri-app/src/features/runtime/useRuntimeManager.ts` — validation integrated at lines 79-82, 203-208, 236-239
- `tauri-app/src/features/runtime/types.ts` — validation types defined

## Notes

Phase 5 implementation was completed as part of Phase 4 work. The phase directory was missing but all code artifacts are present and verified.