development-lifecycle

# Development Lifecycle Auto-detect phase, guide process. ## Phases ### 0. Worktree (automatic, silent if already isolated) Feature branch? Skip. On main/master/develop? Spawn worktree before code. [ETHOS: Worktree Isolation] scripts/mux-worktree.sh <type>/<branch-name> Claude invoke silent when phase 1 start on default branch. User never run. ### 1. Understand - Explore | clarify one-at-a-time | new->2-3 approaches+tradeoffs | bug->failing test->root cause - Spawn background agents: alternatives, prior art, edge cases parallel - Mixed patterns area? Refactor to single pattern FIRST before add features - **GATE: no impl code until approach approved.** ### 2. Plan - Every step: exact file paths, exact code, expected output. No placeholders. - Bite-sized tasks (2-5 min each) - UI work: use `/prototype` for 2-3 runnable UI variations, review with user, pick best. See [REFERENCE.md](REFERENCE.md). - 5+ tasks -> stacked PRs (one per logical group) - Complex plan (5+ tasks, multi-stakeholder)? Consider `/ultraplan` - `/codex:rescue` available -> auto-dispatch second opinion ### 2b. Grill **GATE: no impl until plan survive grilling.** - Auto-invoke `/grill-with-docs` | grill until every branch resolved | update CONTEXT.md + ADRs inline - Update plan with changes | get explicit user confirmation - Skip only if: trivial bug fix AND <3 tasks AND no architectural decisions ### 3. Implement (TDD) - RED: failing test first | GREEN: minimal code to pass - **Test deletion guard**: verify test+assertion count not decrease after GREEN. AI may weaken tests -> reject and redo. - REFACTOR while green | no `setTimeout` hacks | run `--detectAsyncLeaks` ### 4-6. Ship -- `/go` Impl done -> run `/go` to ship. Handle all: - **4. Verify** -- types + lint + tests + browser smoke - **4b. Review / Refine** -- self-reviewer + adversarial-reviewer agents (4b->5) - **5. Ship** -- `/simplify` -> `/commit-push-pr` -> code-reviewer agent - **5b. Iterate** -- monitor CI -> `/resolve-pr-feedback` -> AI self-review: up to 3 rounds, early-exit on clean; human review: address ALL (hook-enforced) - **6. Compound** -- codify lessons as `.claude/rules/` See `/go` skill full details. See [REFERENCE.md](REFERENCE.md) phase-specific checklists. ## Phase Selection Full flowchart [REFERENCE.md#phase-flowchart](REFERENCE.md#phase-flowchart). | User says | Phases | |---|---| | "Build a new feature" | 1->2->**2b**->3->**`/go`** | | "Fix this bug" | 1(reproduce)->3(TDD)->**`/go`** | | "Refactor this module" | 1->2->**2b**->3->**`/go`** | | "Write tests for X" | 3 only | | "Ship it" / "Create a PR" | **`/go`** only | | "Quick question" | Just answer | | "Batch these 5 issues" | **Sandcastle** -- parallel agents | | "Work on this overnight" | **Sandcastle** -- AFK delegation | See [REFERENCE.md](REFERENCE.md) detailed checklists + Sandcastle integration.