# Requirements: AI Backend Studio

**Defined:** 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.

## v1 Requirements

### Runtime Workspace

- [x] **WORK-01**: User can access one authoritative runtime workspace for runtime status, lifecycle actions, and runtime settings
- [x] **WORK-02**: User can understand the difference between live runtime state and unsaved draft settings while editing

### Settings Safety

- [x] **CONF-01**: User can edit runtime settings without background polling or refresh overwriting dirty fields
- [x] **CONF-02**: User can explicitly save, cancel, or revert runtime settings changes
- [x] **CONF-03**: User can keep folder-path and provider/model-source selections stable until they choose to change or discard them
- [x] **CONF-04**: User can recover from failed save or validation errors without losing the current draft

### Runtime Control

- [x] **CTRL-01**: User can start, stop, and retry runtime lifecycle actions from the runtime workspace with clear in-progress and completion feedback
- [x] **CTRL-02**: User can tell whether a configuration change applies immediately or requires restart/restart-and-apply semantics
- [x] **CTRL-03**: User cannot trigger conflicting runtime actions while another lifecycle operation is still in progress

### Model Sources

- [ ] **MODL-01**: User can choose runtime/model sources and only see valid model choices for the current source and mode
- [ ] **MODL-02**: User can select managed library and models folder locations with validation before saving

### Diagnostics

- [x] **DIAG-01**: User can see actionable runtime health details, including readiness, endpoint/mode context, active model context, and relevant failure guidance

## v2 Requirements

### Runtime Workspace Enhancements

- **WORK-03**: User can compare live runtime state and draft settings side by side in a dedicated compare view
- **WORK-04**: User can restore unsaved runtime drafts after app reload or restart

### Model Sources Enhancements

- **MODL-03**: User can preserve separate drafts when switching between local and remote/runtime source modes
- **MODL-04**: User can browse richer model compatibility hints and source provenance before applying a model change

### Diagnostics Enhancements

- **DIAG-02**: User can see per-setting impact previews before saving high-impact runtime changes
- **DIAG-03**: User can trigger guided repair actions such as open logs, reveal models folder, or reset to last saved state from diagnostic surfaces

## Out of Scope

| Feature | Reason |
|---------|--------|
| Backend inference engine changes | This milestone targets runtime workspace UX and frontend/runtime-management flow, not model execution internals |
| Broad chat experience redesign | Chat is already validated and is outside the runtime-workspace trust problem |
| Silent autosave for runtime-impacting settings | Explicit save/cancel semantics are required to avoid surprise mutations and restarts |
| Separate full-featured status and settings control centers | The roadmap should reduce duplication, not preserve split-brain control surfaces |
| Cloud control plane or multi-user orchestration | The scoped work is for the current local-first desktop experience |

## Traceability

| Requirement | Phase | Status |
|-------------|-------|--------|
| WORK-01 | Phase 3 | Complete |
| WORK-02 | Phase 1 | Complete |
| CONF-01 | Phase 1 | Complete |
| CONF-02 | Phase 1 | Complete |
| CONF-03 | Phase 1 | Complete |
| CONF-04 | Phase 1 | Complete |
| CTRL-01 | Phase 2 | Complete |
| CTRL-02 | Phase 2 | Complete |
| CTRL-03 | Phase 2 | Complete |
| MODL-01 | Phase 4 | Pending |
| MODL-02 | Phase 4 | Pending |
| DIAG-01 | Phase 3 | Complete |

**Coverage:**
- v1 requirements: 12 total
- Mapped to phases: 12
- Unmapped: 0

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*Requirements defined: 2026-03-28*
*Last updated: 2026-03-29 after Phase 2 completion*