# Sprint 3: Single Agent Execution

**Status**: ✅ Complete
**Duration**: Week 3 (October 17-19, 2025)
**Epic/Issues**: cf-32, cf-33, cf-41, cf-42, cf-43, cf-44, cf-45, cf-46

## Goal
One worker agent executes one task with self-correction.

## User Story
As a developer, I want to watch a Backend Agent write code, run tests, fix failures, and complete a task.

## Implementation Tasks

### Core Features (P0)
- [x] **cf-32**: Codebase Indexing - Tree-sitter multi-language parsing - efa6bf7
- [x] **cf-33**: Git Branching & Deployment Workflow - Feature branches and auto-deployment - 75d2556, ce3d66e
- [x] **cf-41**: Backend Worker Agent - Task execution with LLM (4 phases) - e18f6d6, 3b7081b, ddb495f
- [x] **cf-42**: Test Runner Integration - Pytest execution and result parsing - [integrated]
- [x] **cf-43**: Self-Correction Loop - Auto-fix test failures (max 3 attempts) - [integrated]
- [x] **cf-46**: Production Bug Fixes - Staging demo blockers - 9ea75dc, a553e72

### Enhancements (P1)
- [x] **cf-44**: Git Auto-Commit - Conventional commit messages - [integrated]
- [x] **cf-45**: Real-Time Dashboard Updates - WebSocket integration - d9af52b

## Definition of Done
- [x] Backend Agent executes a real task
- [x] Agent writes actual code files
- [x] Tests run and results appear in dashboard
- [x] Agent fixes test failures automatically (max 3 attempts)
- [x] Task marked complete when tests pass
- [x] Git commit created with conventional messages
- [x] Dashboard updates in real-time via WebSocket
- [x] Staging deployment functional

## Key Commits
- `efa6bf7` - feat(cf-32): Implement codebase indexing with tree-sitter parsers
- `75d2556` - feat(cf-33): Implement Git workflow management (Phases 1&2)
- `ce3d66e` - feat(cf-33): Complete Phases 3&4 - LeadAgent integration and deployment
- `e18f6d6` - feat(cf-41): Backend Worker Agent Phase 1 - Foundation
- `3b7081b` - feat(cf-41): Backend Worker Agent Phase 2 - Context & Code Generation
- `ddb495f` - feat(cf-41): Backend Worker Agent Phase 3 - File Operations & Task Management
- `d9af52b` - feat(cf-45): Complete Real-Time Dashboard Updates with WebSocket integration
- `9ea75dc` - fix(cf-46): Fix production bugs blocking Sprint 3 staging demo
- `a553e72` - fix(cf-46): Add progress field to /status endpoint

## Metrics
- **Tests**: 200+ comprehensive tests
- **Coverage**: 85-97% across all modules
- **Pass Rate**: 100%
- **Agents**: 1 (Backend Worker Agent)

## Key Features Delivered
- **Autonomous Task Execution**: Backend Worker Agent executes tasks end-to-end
- **Test Integration**: Automatic pytest execution with JSON report parsing
- **Self-Correction**: Up to 3 automatic fix attempts before human escalation
- **Git Workflow**: Feature branches, conventional commits, auto-deployment
- **Real-Time Updates**: 7 WebSocket message types (task_status, agent_status, test_result, commit, activity, progress, correction)
- **Codebase Indexing**: Tree-sitter parsing for Python, TypeScript, JavaScript
- **Production Ready**: Staging deployment at http://codeframe.home.frankbria.net:14100

## Sprint Retrospective

### What Went Well
- Strict TDD methodology maintained throughout (RED-GREEN-REFACTOR)
- Self-correction loop successfully prevents infinite retry loops
- WebSocket integration provides excellent real-time UX
- Production deployment revealed and resolved 3 critical bugs quickly

### Challenges & Solutions
- **Challenge**: WebSocket connectivity in nginx proxy
  - **Solution**: Comprehensive nginx configuration docs with proper upgrade headers
- **Challenge**: Missing API contract tests
  - **Solution**: Created deployment contract test suite (15 tests)
- **Challenge**: Test failures in threaded execution
  - **Solution**: Proper async/sync separation (addressed fully in Sprint 5)

### Key Learnings
- Deploy early and often - staging deployment caught critical bugs
- API contract tests prevent production surprises
- Self-correction needs clear termination conditions (max 3 attempts)
- WebSocket broadcasts require careful async handling

## References
- **Beads**: cf-32, cf-33, cf-41, cf-42, cf-43, cf-44, cf-45, cf-46
- **Specs**: specs/032-codebase-indexing/, specs/033-git-workflow/
- **Docs**: docs/self_correction_workflow.md, docs/nginx-websocket-config.md
- **Deployment**: DEPLOY_CF46_FIX.md, VERIFY_DEPLOYMENT.md
