docs: create roadmap (3 phases)

Phases:
1. Core Command: CMD-01-05, EXEC-01-04, STATE-01-03
2. Resume Integration: RESUME-01-02
3. Documentation: DOCS-01-03

All v1 requirements mapped to phases.

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

.planning/REQUIREMENTS.md

@@ -80,8 +80,8 @@
 **Coverage:**
 - v1 requirements: 17 total
 - Mapped to phases: 17
-- Unmapped: 0 ✓
+- Unmapped: 0
 
 ---
 *Requirements defined: 2025-01-19*
-*Last updated: 2025-01-19 after initial definition*
+*Last updated: 2025-01-19 after roadmap creation*

.planning/ROADMAP.md

@@ -0,0 +1,68 @@
+# Roadmap: GSD Quick Mode
+
+## Overview
+
+Quick mode adds a fast-path command (`/gsd:quick`) that executes small tasks with full GSD guarantees (atomic commits, STATE.md tracking, ROADMAP.md integration) but skips optional verification agents. The roadmap delivers the command, integrates it with resume-work, and documents the feature.
+
+## Phases
+
+**Phase Numbering:**
+- Integer phases (1, 2, 3): Planned milestone work
+- Decimal phases (2.1, 2.2): Urgent insertions (marked with INSERTED)
+
+- [ ] **Phase 1: Core Command** - Complete `/gsd:quick` command end-to-end
+- [ ] **Phase 2: Resume Integration** - Update `/gsd:resume-work` for decimal phases
+- [ ] **Phase 3: Documentation** - Update help.md, README.md, and GSD-STYLE.md
+
+## Phase Details
+
+### Phase 1: Core Command
+**Goal**: User can run `/gsd:quick "description"` and have it execute with full state tracking
+**Depends on**: Nothing (first phase)
+**Requirements**: CMD-01, CMD-02, CMD-03, CMD-04, CMD-05, EXEC-01, EXEC-02, EXEC-03, EXEC-04, STATE-01, STATE-02, STATE-03
+**Success Criteria** (what must be TRUE):
+  1. User can run `/gsd:quick "fix button spacing"` and it parses the description
+  2. Command fails with clear error if no ROADMAP.md exists
+  3. Decimal phase directory created (e.g., `.planning/phases/1.1-fix-button-spacing/`)
+  4. ROADMAP.md contains new decimal phase entry after command completes
+  5. STATE.md "Last activity" and "Quick Tasks Completed" table updated after execution
+**Plans**: TBD
+
+Plans:
+- [ ] 01-01: TBD
+
+### Phase 2: Resume Integration
+**Goal**: User can resume failed quick tasks using existing `/gsd:resume-work`
+**Depends on**: Phase 1
+**Requirements**: RESUME-01, RESUME-02
+**Success Criteria** (what must be TRUE):
+  1. `/gsd:resume-work` correctly parses decimal phase numbers (3.1, 3.2)
+  2. `/gsd:resume-work` finds and resumes decimal phase directories
+**Plans**: TBD
+
+Plans:
+- [ ] 02-01: TBD
+
+### Phase 3: Documentation
+**Goal**: Quick mode is documented in all relevant locations
+**Depends on**: Phase 2
+**Requirements**: DOCS-01, DOCS-02, DOCS-03
+**Success Criteria** (what must be TRUE):
+  1. help.md lists `/gsd:quick` with usage and description
+  2. README.md includes quick mode section explaining when to use it
+  3. GSD-STYLE.md documents quick mode patterns
+**Plans**: TBD
+
+Plans:
+- [ ] 03-01: TBD
+
+## Progress
+
+**Execution Order:**
+Phases execute in numeric order: 1 -> 2 -> 3
+
+| Phase | Plans Complete | Status | Completed |
+|-------|----------------|--------|-----------|
+| 1. Core Command | 0/? | Not started | - |
+| 2. Resume Integration | 0/? | Not started | - |
+| 3. Documentation | 0/? | Not started | - |

.planning/STATE.md

@@ -0,0 +1,59 @@
+# Project State
+
+## Project Reference
+
+See: .planning/PROJECT.md (updated 2025-01-19)
+
+**Core value:** Same guarantees, 50-70% fewer tokens for simple tasks
+**Current focus:** Phase 1 - Core Command
+
+## Current Position
+
+Phase: 1 of 3 (Core Command)
+Plan: 0 of ? in current phase
+Status: Ready to plan
+Last activity: 2025-01-19 - Roadmap created
+
+Progress: [----------] 0%
+
+## Performance Metrics
+
+**Velocity:**
+- Total plans completed: 0
+- Average duration: -
+- Total execution time: 0 hours
+
+**By Phase:**
+
+| Phase | Plans | Total | Avg/Plan |
+|-------|-------|-------|----------|
+| - | - | - | - |
+
+**Recent Trend:**
+- Last 5 plans: -
+- Trend: -
+
+*Updated after each plan completion*
+
+## Accumulated Context
+
+### Decisions
+
+Decisions are logged in PROJECT.md Key Decisions table.
+Recent decisions affecting current work:
+
+- None yet
+
+### Pending Todos
+
+None yet.
+
+### Blockers/Concerns
+
+None yet.
+
+## Session Continuity
+
+Last session: 2025-01-19
+Stopped at: Roadmap creation complete
+Resume file: None