# TASK-007 Changelog

## Overview

This changelog tracks the implementation of the Integrated Local Backend feature, enabling zero-configuration full-stack development in Nodegex.

### Implementation Phases

1. **Phase A**: LocalSQL Adapter - SQLite-based CloudStore implementation
2. **Phase B**: Backend Server - Express server with REST/WebSocket
3. **Phase C**: Workflow Runtime - Visual workflow execution
4. **Phase D**: Launcher Integration - Backend management UI
5. **Phase E**: Migration & Export - Tools for moving to production
6. **Phase F**: Standalone Deployment - Bundling backend with apps

---

## [Date TBD] - Task Created

### Summary

Task documentation created for Integrated Local Backend feature (TASK-007). This feature addresses the #1 friction point for new users by providing a zero-configuration backend that runs alongside the editor.

### Task Documents Created

- `README.md` - Full task specification (~1800 lines)
- `CHECKLIST.md` - Implementation checklist (~400 items)
- `CHANGELOG.md` - This file
- `NOTES.md` - Working notes template

### Key Architectural Decisions

1. **Hybrid adapter approach**: Keep Parse support while adding local SQLite adapter
2. **Same visual paradigm**: Backend workflows use identical node system as frontend
3. **Launcher-managed backends**: Backends exist independently of projects, can be shared
4. **WebSocket realtime**: Change notifications via WebSocket for SSE/WS node support
5. **Bundled deployment**: Backend can be packaged with Electron apps

### Strategic Context

This feature transforms Nodegex from a frontend-focused visual editor into a true full-stack development platform. The zero-config experience removes the biggest barrier to adoption while maintaining clear migration paths to production backends.

---

## Progress Summary

| Phase | Status | Date Started | Date Completed | Hours |
|-------|--------|--------------|----------------|-------|
| Phase A: LocalSQL Adapter | Not Started | - | - | - |
| Phase B: Backend Server | Not Started | - | - | - |
| Phase C: Workflow Runtime | Not Started | - | - | - |
| Phase D: Launcher Integration | Not Started | - | - | - |
| Phase E: Migration & Export | Not Started | - | - | - |
| Phase F: Standalone Deployment | Not Started | - | - | - |

---

## Session Log

### Template for Session Entries

```markdown
## [YYYY-MM-DD] - Session N: [Phase Name]

### Summary
[Brief description of what was accomplished]

### Files Created
- `path/to/file.ts` - [Purpose]

### Files Modified
- `path/to/file.ts` - [What changed and why]

### Technical Notes
- [Key decisions made]
- [Patterns discovered]
- [Gotchas encountered]

### Testing Notes
- [What was tested]
- [Any edge cases discovered]

### Performance Notes
- [Any performance observations]

### Next Steps
- [What needs to be done next]
```

---

## Blockers Log

_Track any blockers encountered during implementation_

| Date | Blocker | Resolution | Time Lost |
|------|---------|------------|-----------|
| - | - | - | - |

---

## Technical Decisions Log

_Record significant technical decisions made during implementation_

| Date | Decision | Rationale | Alternatives Considered |
|------|----------|-----------|------------------------|
| - | SQLite over embedded Postgres | Lightweight, zero-config, single file | PostgreSQL, MongoDB |
| - | WebSocket for realtime | Native browser support, bi-directional | SSE, polling |
| - | Express over Fastify | Already in codebase, team familiarity | Fastify, Koa |

---

## API Changes Log

_Track any changes to public APIs or interfaces_

| Date | Change | Migration Required |
|------|--------|-------------------|
| - | - | - |

---

## Performance Benchmarks

_Record performance measurements during development_

| Date | Scenario | Measurement | Target | Status |
|------|----------|-------------|--------|--------|
| - | Query 10K records | - | <100ms | - |
| - | WebSocket broadcast to 100 clients | - | <50ms | - |
| - | Workflow hot reload | - | <1s | - |

---

## Known Issues

_Track known issues discovered during implementation_

| Issue | Severity | Workaround | Fix Planned |
|-------|----------|------------|-------------|
| - | - | - | - |

---

## Future Enhancements

_Ideas for future improvements discovered during implementation_

1. External adapter for Supabase
2. External adapter for PocketBase
3. External adapter for Directus
4. Visual schema editor in backend panel
5. Query builder UI for data exploration
6. Automated backup scheduling
7. Multi-tenant support for deployed apps
