development-lifecycle

name	development-lifecycle
description	Use when doing frontend/React/TypeScript/UI work. Auto-guides phase: understand -> plan -> grill -> implement (TDD) -> /go (4->4b review->5->5b->6). One skill, full lifecycle. Alias: /work.

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.
• 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 phase-specific checklists.

Phase Selection

Full 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 detailed checklists + Sandcastle integration.