# Project State

## Project Summary

**Building:** Brownfield support for GSD - `/gsd:map-codebase` workflow that analyzes existing codebases using parallel Explore agents, producing structured `.planning/codebase/` documents.

**Core requirements:**
- `/gsd:map-codebase` produces useful codebase documents from any codebase
- Documents are focused (<100 lines each) and easy to update incrementally
- `/gsd:new-project` detects existing code and offers mapping
- `/gsd:plan-phase` loads relevant codebase context automatically
- Codebase map updates after plan execution

**Constraints:**
- Explore agents required for initial mapping
- Each codebase map file must stay under ~100 lines
- Only load relevant codebase sections into phase planning
- Follow existing GSD command/workflow/template patterns

## Current Position

Phase: 16 of 16 (Plan Verification Loop)
Plan: 3 of 3 in current phase
Status: Phase complete
Last activity: 2026-01-16 - Completed 16-03-PLAN.md

Progress: ███████████████████████████████████████ 39/39 plans (100%)

## Performance Metrics

**Velocity:**
- Total plans completed: 39
- Average duration: 3.4 min
- Total execution time: ~132 min

**By Phase:**

| Phase | Plans | Total | Avg/Plan |
|-------|-------|-------|----------|
| 1 | 3 | 9 min | 3 min |
| 2 | 2 | 5 min | 2.5 min |
| 3 | 1 | 2 min | 2 min |
| 4 | 2 | 7 min | 3.5 min |
| 5 | 2 | 5 min | 2.5 min |
| 6 | 2 | 4 min | 2 min |
| 7 | 1 | 4 min | 4 min |
| 8 | 1 | 1 min | 1 min |
| 9 | 1 | 3 min | 3 min |
| 10 | 4 | 33 min | 8.3 min |
| 11 | 4 | 12 min | 3 min |
| 99 | 3 | 1 min | <1 min (parallel) |
| 13 | 3 | 10 min | 3.3 min |
| 14 | 3 | 11 min | 3.7 min |
| 15 | 3 | 7 min | 2.3 min |
| 16 | 3 | 10 min | 3.3 min |

**Recent Trend:**
- Last 5 plans: 15-03 (1m), 16-01 (3m), 16-02 (4m), 16-03 (3m)
- Trend: Consistent execution times

*Updated after each plan completion*

## Accumulated Context

### Decisions Made

| Phase | Decision | Rationale |
|-------|----------|-----------|
| 0 | Folder with focused files | Easier to update incrementally than monolithic file |
| 0 | Update after plan execution | Fits existing STATE.md update pattern |
| 0 | Parallel Explore agents | Thoroughness for initial mapping |
| 0 | Selective context loading | Avoid loading irrelevant sections |
| 6 | Frontmatter with dependency graph | Enable automatic context assembly via transitive closure |
| 6 | Intelligent summary selection | Scan frontmatter, build graph, auto-select relevant phases |
| 8 | Active milestone details in ROADMAP.md | Single source of truth during development, archive only on completion |
| 9 | Phase-scoped UAT issues | Keep UAT findings tied to specific plan, not global ISSUES.md |
| 10 | git mv preserves history | Rename workflow while keeping git history intact |
| 10 | execute-plan = single, execute-phase = parallel | Clear naming for single-plan vs multi-plan execution |
| 10 | Agent-history v1.2 schema | Extended for parallel tracking, dependencies, resume support |
| 11 | Frontmatter parallelization markers | parallelizable, depends_on, files_exclusive in plan template |
| 11 | Vertical slices over workflow stages | Maximize independence when parallelization enabled |
| 11 | SUMMARY references only when needed | Avoid reflexive sequential chains |
| 13 | Consolidated debugging expertise to 990 lines | Complete methodology with 59% reduction from source material |
| 13 | Thin orchestrator pattern for /gsd:debug | Orchestrator <200 lines, expertise in agent - reduces main context from ~2,400 to ~150 |
| 13 | Deprecated reference files with redirect notices | No duplicate content between references and agent |
| 14 | 4 explicit research modes | Ecosystem, feasibility, implementation, comparison cover all needs |
| 14 | Context7 > Official > WebSearch hierarchy | Prevents hallucination with authoritative sources first |
| 14 | 902 lines from ~1,200 source (25% reduction) | Preserved all concepts while removing redundancy |
| 14 | Thin orchestrator for /gsd:research-phase | Orchestrator 130 lines, expertise in agent |
| 14 | Parallel agent spawning for /gsd:research-project | 4 agents (stack, features, architecture, pitfalls) maximize throughput |
| 15 | 1,147 lines from ~3,580 source (68% reduction) | Complete planning methodology consolidated into single agent |
| 15 | 14 sections covering full planning workflow | Includes discovery, task breakdown, dependency graph, goal-backward, checkpoints, TDD, gap closure |
| 15 | Deprecation notices point to specific agent sections | Planning references deprecated, content in gsd-planner |
| 15 | 189 lines thin orchestrator for /gsd:plan-phase | Under 200 target, uses agent: gsd-planner frontmatter |
| 15 | Context-only planner-subagent-prompt.md template | Follows debug/research template pattern |
| 16 | Six verification dimensions | Coverage, completeness, dependencies, links, scope, derivation |
| 16 | Checker verifies plans WILL achieve goal | Same methodology as verifier but applied to plans pre-execution |
| 16 | Orchestrator stays in main context | User sees ping-pong between planner and checker |
| 16 | Max 3 iterations before user escalation | Prevents infinite loops, gives user control |
| 16 | --skip-verify flag for power users | Experienced users can bypass verification when confident |
| 16 | 6-step revision process in planner | Surgeon mindset: minimal targeted updates for checker issues |
| 16 | Strategy table maps dimensions to actions | Each of 6 issue dimensions has specific revision strategy |

### Deferred Issues

None yet.

### Blockers/Concerns Carried Forward

None yet.

### Roadmap Evolution

- Phase 4 added: Plan-phase optimizations (~37% context reduction target)
- Phase 5 added: TDD instructions for appropriate test-driven development
- Phase 6 added: Frontmatter and related system upgrade
- Phase 7 added: Backfill existing summaries with frontmatter
- Phase 8 added: Improve roadmap system
- Phase 9 added: Integrate verify-work (community contribution from OracleGreyBeard)
- Phase 10 added: Parallel phase execution (rename workflow, create /gsd:execute-phase with parallelization)
- Phase 11 added: Parallel-aware planning (update plan-phase.md to create parallelizable plans when enabled)
- Phase 12 added: Changelog & update awareness (remote changelog fetch, /gsd:whats-new, publish workflow integration)
- Phase 13 added: Dedicated debug agent (gsd-debugger with baked-in expertise, thin orchestrator pattern)
- Phase 14 added: Dedicated researcher agent (gsd-researcher with research methodology, tool strategy, output formats)
- Phase 15 added: Dedicated planner agent (gsd-planner with planning expertise, refactor plan-phase to thin orchestrator)
- Phase 16 added: Plan verification loop (gsd-plan-checker, planner → checker → revise orchestration)

## Project Alignment

Last checked: 2026-01-16
Status: COMPLETE
Assessment: Phase 16 complete. Plan verification loop — gsd-plan-checker (744 lines), plan-phase orchestrator loop (310 lines), gsd-planner revision mode (1,284 lines).
Drift notes: None

## Session Continuity

Last session: 2026-01-16
Stopped at: Completed 16-03-PLAN.md (Phase 16 complete)
Resume file: None