docs(01): capture phase context

Phase 01: Core Command
- Implementation decisions documented
- Phase boundary established
- Quick tasks use .planning/quick/ directory structure

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.planning/phases/01-core-command/01-CONTEXT.md

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+# Phase 1: Core Command - Context
+
+**Gathered:** 2025-01-19
+**Status:** Ready for planning
+
+<domain>
+## Phase Boundary
+
+Complete `/gsd:quick` command that executes small tasks with GSD guarantees (atomic commits, STATE.md tracking) while skipping optional agents (research, plan-checker, verifier). Quick tasks live in `.planning/quick/` separate from planned phases.
+
+</domain>
+
+<decisions>
+## Implementation Decisions
+
+### Invocation & Arguments
+- Interactive prompt for task description (no inline args)
+- No flags — keep it minimal
+- Fail with clear error if no ROADMAP.md exists
+- Can run mid-phase — quick tasks always allowed regardless of current phase status
+
+### Task Scope & Execution
+- No scope limits — user decides what's "quick"
+- Skip research agent, plan-checker agent, and verifier agent
+- On failure: no resume tracking — user re-runs `/gsd:quick` from scratch
+- Creates PLAN.md before execution (lightweight, single task)
+
+### Output & Feedback
+- Standard GSD output during execution (same task status updates)
+- Creates SUMMARY.md matching regular phase format
+- No commit if no changes (current GSD behavior)
+
+### Directory Structure
+- Quick tasks go to `.planning/quick/NNN-slug/` (NOT `.planning/phases/`)
+- 3-digit padded ascending numbers: `001-fix-button-spacing/`, `002-update-readme/`
+- Each directory contains: PLAN.md, SUMMARY.md
+
+### State Integration
+- Do NOT update ROADMAP.md — quick tasks are ad-hoc, not planned work
+- Update STATE.md with "Quick Tasks Completed" table
+- Table includes: number, description, date, commit hash, link to /quick/ dir
+
+### Claude's Discretion
+- Exact PLAN.md format for quick tasks (simplified vs full)
+- Slug generation from task description
+- Error message wording
+
+</decisions>
+
+<specifics>
+## Specific Ideas
+
+- Keep roadmap clean — it's the plan, not the execution log
+- Quick tasks are interruptions, not planned phases — structure should reflect that
+- Date is in git commit, no need in directory name
+
+</specifics>
+
+<deferred>
+## Deferred Ideas
+
+None — discussion stayed within phase scope
+
+</deferred>
+
+---
+
+*Phase: 01-core-command*
+*Context gathered: 2025-01-19*