implementing-in-backgroundlisted

# Background Implementer Multi-LLM background implementation with context-safe parallel execution. ## Quick Start ```bash # 1. Analyze planning doc → extract tasks # 2. Create output dir: .context/impl/ # 3. Determine round: R01, R02, ... # 4. Run agents in background → {round}-{agent}.md # 5. Guide user to check results manually ``` ## Output Convention ``` .context/impl/ ├── R01-tasks.md # Round 1: task decomposition ├── R01-claude.md # Round 1: Claude's implementation notes ├── R01-codex.md # Round 1: Codex's implementation notes ├── R01-gemini.md # Round 1: Gemini's implementation notes ├── R01-summary.md # Round 1: merged summary ├── R02-claude.md # Round 2: fixes/iterations └── R02-summary.md ``` **Round number** increments each implementation iteration: ```bash mkdir -p .context/impl ROUND=$(printf "R%02d" $(( $(ls .context/impl/R*-*.md 2>/dev/null | sed 's/.*\/R\([0-9]*\)-.*/\1/' | sort -rn | head -1 | sed 's/^0*//') + 1 ))) ``` ## Provider Selection | Provider | Best For | Command | |----------|----------|---------| | **Claude** | Complex logic, APIs, multi-file changes | `Task({ run_in_background: true })` | | **Codex** | DB migrations, models, focused code gen | `nohup codex exec --full-auto -C {workdir} "prompt" > log 2>&1 &` | | **OpenCode** | General implementation, multi-model support | `nohup opencode run -q -f text "prompt" > log 2>&1 &` | | **Gemini** | Tests, documentatio