diff --git a/.planning/REQUIREMENTS.md b/.planning/REQUIREMENTS.md
index 02d2ebb..22ae16a 100644
--- a/.planning/REQUIREMENTS.md
+++ b/.planning/REQUIREMENTS.md
@@ -74,24 +74,24 @@ Which phases cover which requirements. Updated during roadmap creation.
 
 | Requirement | Phase | Status |
 |-------------|-------|--------|
-| COLL-01 | — | Pending |
-| COLL-02 | — | Pending |
-| COLL-03 | — | Pending |
-| COLL-04 | — | Pending |
-| THRD-01 | — | Pending |
-| THRD-02 | — | Pending |
-| THRD-03 | — | Pending |
-| THRD-04 | — | Pending |
-| SETP-01 | — | Pending |
-| SETP-02 | — | Pending |
-| SETP-03 | — | Pending |
-| DASH-01 | — | Pending |
+| COLL-01 | Phase 1 | Pending |
+| COLL-02 | Phase 1 | Pending |
+| COLL-03 | Phase 1 | Pending |
+| COLL-04 | Phase 1 | Pending |
+| THRD-01 | Phase 2 | Pending |
+| THRD-02 | Phase 2 | Pending |
+| THRD-03 | Phase 2 | Pending |
+| THRD-04 | Phase 2 | Pending |
+| SETP-01 | Phase 3 | Pending |
+| SETP-02 | Phase 3 | Pending |
+| SETP-03 | Phase 3 | Pending |
+| DASH-01 | Phase 3 | Pending |
 
 **Coverage:**
 - v1 requirements: 12 total
-- Mapped to phases: 0
-- Unmapped: 12 ⚠️
+- Mapped to phases: 12
+- Unmapped: 0
 
 ---
 *Requirements defined: 2026-03-14*
-*Last updated: 2026-03-14 after initial definition*
+*Last updated: 2026-03-14 after roadmap creation*
diff --git a/.planning/ROADMAP.md b/.planning/ROADMAP.md
new file mode 100644
index 0000000..12fb9a5
--- /dev/null
+++ b/.planning/ROADMAP.md
@@ -0,0 +1,76 @@
+# Roadmap: GearBox
+
+## Overview
+
+GearBox delivers a gear management and purchase planning web app in three phases. Phase 1 establishes the foundation and builds the complete gear collection feature — the core entity everything else depends on. Phase 2 adds planning threads, the product's differentiator, enabling structured purchase research with candidate comparison and thread resolution into the collection. Phase 3 completes the app with named setups (loadouts composed from collection items) and the dashboard home page that ties everything together.
+
+## Phases
+
+**Phase Numbering:**
+- Integer phases (1, 2, 3): Planned milestone work
+- Decimal phases (2.1, 2.2): Urgent insertions (marked with INSERTED)
+
+Decimal phases appear between their surrounding integers in numeric order.
+
+- [ ] **Phase 1: Foundation and Collection** - Project scaffolding, data model, and complete gear item CRUD with categories and totals
+- [ ] **Phase 2: Planning Threads** - Purchase research workflow with candidates, comparison, and thread resolution
+- [ ] **Phase 3: Setups and Dashboard** - Named loadouts from collection items and dashboard home page
+
+## Phase Details
+
+### Phase 1: Foundation and Collection
+**Goal**: Users can catalog their gear collection with full item details, organize by category, and see aggregate weight and cost totals
+**Depends on**: Nothing (first phase)
+**Requirements**: COLL-01, COLL-02, COLL-03, COLL-04
+**Success Criteria** (what must be TRUE):
+  1. User can add a gear item with name, weight, price, category, notes, and product link and see it in their collection
+  2. User can edit any field on an existing item and delete items they no longer want
+  3. User can create, rename, and delete categories, and every item belongs to a user-defined category
+  4. User can see automatic weight and cost totals per category and for the entire collection
+  5. The app runs as a single Bun process with SQLite storage and serves a clean, minimalist UI
+**Plans**: TBD
+
+Plans:
+- [ ] 01-01: TBD
+- [ ] 01-02: TBD
+
+### Phase 2: Planning Threads
+**Goal**: Users can research potential purchases through planning threads — adding candidates, comparing them, and resolving a thread by picking a winner that moves into their collection
+**Depends on**: Phase 1
+**Requirements**: THRD-01, THRD-02, THRD-03, THRD-04
+**Success Criteria** (what must be TRUE):
+  1. User can create a planning thread with a descriptive name and see it in a threads list
+  2. User can add candidate products to a thread with weight, price, notes, and product link
+  3. User can edit and remove candidates from an active thread
+  4. User can resolve a thread by selecting a winning candidate, which automatically creates a new item in their collection and archives the thread
+**Plans**: TBD
+
+Plans:
+- [ ] 02-01: TBD
+- [ ] 02-02: TBD
+
+### Phase 3: Setups and Dashboard
+**Goal**: Users can compose named loadouts from their collection items with live totals, and navigate the app through a dashboard home page
+**Depends on**: Phase 1, Phase 2
+**Requirements**: SETP-01, SETP-02, SETP-03, DASH-01
+**Success Criteria** (what must be TRUE):
+  1. User can create a named setup (e.g. "Summer Bikepacking") and see it in a setups list
+  2. User can add and remove collection items from a setup
+  3. User can see total weight and cost for a setup, computed live from current item data
+  4. User sees a dashboard home page with cards linking to their collection, active threads, and setups
+**Plans**: TBD
+
+Plans:
+- [ ] 03-01: TBD
+- [ ] 03-02: TBD
+
+## Progress
+
+**Execution Order:**
+Phases execute in numeric order: 1 -> 2 -> 3
+
+| Phase | Plans Complete | Status | Completed |
+|-------|----------------|--------|-----------|
+| 1. Foundation and Collection | 0/0 | Not started | - |
+| 2. Planning Threads | 0/0 | Not started | - |
+| 3. Setups and Dashboard | 0/0 | Not started | - |
diff --git a/.planning/STATE.md b/.planning/STATE.md
new file mode 100644
index 0000000..ceb1f1b
--- /dev/null
+++ b/.planning/STATE.md
@@ -0,0 +1,61 @@
+# Project State
+
+## Project Reference
+
+See: .planning/PROJECT.md (updated 2026-03-14)
+
+**Core value:** Make it effortless to manage gear and plan new purchases — see how a potential buy affects your total setup weight and cost before committing.
+**Current focus:** Phase 1: Foundation and Collection
+
+## Current Position
+
+Phase: 1 of 3 (Foundation and Collection)
+Plan: 0 of 0 in current phase
+Status: Ready to plan
+Last activity: 2026-03-14 — 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:
+
+- [Roadmap]: 3-phase coarse structure — Collection, Threads, Setups+Dashboard
+- [Roadmap]: Setups and Dashboard combined into single phase (coarse granularity)
+
+### Pending Todos
+
+None yet.
+
+### Blockers/Concerns
+
+- Verify @hono/zod-validator supports Zod 4.x before starting Phase 1. If not, pin Zod 3.23.x.
+- Confirm Bun fullstack vs. Vite proxy dev setup pattern before project scaffolding.
+
+## Session Continuity
+
+Last session: 2026-03-14
+Stopped at: Roadmap created, ready to plan Phase 1
+Resume file: None