docs(01-02): complete Backend Schema Registry plan - SUMMARY, STATE, ROADMAP updated

- 01-02-SUMMARY.md created with decisions, deviations, and self-check
- STATE.md: advanced to Plan 2 of 4, added decisions, updated metrics
- ROADMAP.md: phase 1 progress updated (2/4 plans complete)

.planning/ROADMAP.md

@@ -79,7 +79,7 @@ Phases execute in numeric order: 1 → 2 → 3 → 4
 
 | Phase | Plans Complete | Status | Completed |
 |-------|----------------|--------|-----------|
-| 1. Foundation | 1/4 | In progress | - |
+| 1. Foundation | 2/4 | In Progress|  |
 | 2. Generators | 0/? | Not started | - |
 | 3. Wizard UI | 0/? | Not started | - |
 | 4. Review, Download & Security | 0/? | Not started | - |

.planning/STATE.md

@@ -1,3 +1,19 @@
+---
+gsd_state_version: 1.0
+milestone: v1.0
+milestone_name: milestone
+status: executing
+stopped_at: Completed 01-02-PLAN.md — Backend Schema Registry + Wave 0 TDD stubs
+last_updated: "2026-03-26T09:18:57.818Z"
+last_activity: 2026-03-26 — Completed plan 01-01 (project scaffold)
+progress:
+  total_phases: 4
+  completed_phases: 0
+  total_plans: 4
+  completed_plans: 2
+  percent: 50
+---
+
 # Project State
 
 ## Project Reference
@@ -10,28 +26,28 @@ See: .planning/PROJECT.md (updated 2026-03-26)
 ## Current Position
 
 Phase: 1 of 4 (Foundation)
-Plan: 1 of 4 in current phase
+Plan: 2 of 4 in current phase
 Status: In progress
-Last activity: 2026-03-26 — Completed plan 01-01 (project scaffold)
+Last activity: 2026-03-26 — Completed plan 01-02 (Backend Schema Registry)
 
-Progress: [█░░░░░░░░░] 6%
+Progress: [█████░░░░░] 50%
 
 ## Performance Metrics
 
 **Velocity:**
-- Total plans completed: 1
+- Total plans completed: 2
-- Average duration: 4 min
+- Average duration: 3 min
-- Total execution time: 4 min
+- Total execution time: 6 min
 
 **By Phase:**
 
 | Phase | Plans | Total | Avg/Plan |
 |-------|-------|-------|----------|
-| 01-foundation | 1 | 4 min | 4 min |
+| 01-foundation | 2 | 6 min | 3 min |
 
 **Recent Trend:**
-- Last 5 plans: 01-01 (4 min)
+- Last 5 plans: 01-01 (4 min), 01-02 (2 min)
-- Trend: Baseline established
+- Trend: On track
 
 *Updated after each plan completion*
 
@@ -48,6 +64,9 @@ Recent decisions affecting current work:
 - [01-01] Tailwind v4 via @tailwindcss/vite plugin — no postcss.config.js, no tailwind.config.js
 - [01-01] Zod v4 + @hookform/resolvers v5 required together (v5 resolvers required for Zod v4)
 - [01-01] vitest passWithNoTests: true so CI passes before any tests are written
+- [Phase 01-02]: BACKEND_REGISTRY as Record<BackendType, FieldDef[]> — typed map drives both form rendering (Phase 3) and config generation (Phase 2)
+- [Phase 01-02]: Wave 0 TDD stubs (index.test.ts, reducer.test.ts) written before implementation — fail RED until Plans 03-04
+- [Phase 01-02]: All FieldDef.key values snake_case matching rclone config key names exactly — wrong keys would silently break generated .conf files
 
 ### Pending Todos
 
@@ -61,6 +80,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-03-26
+Last session: 2026-03-26T09:18:57.813Z
-Stopped at: Completed 01-01-PLAN.md — Vite scaffold + Tailwind v4 + Vitest configured
+Stopped at: Completed 01-02-PLAN.md — Backend Schema Registry + Wave 0 TDD stubs
 Resume file: None

.planning/phases/01-foundation/01-02-SUMMARY.md

@@ -0,0 +1,121 @@
+---
+phase: 01-foundation
+plan: "02"
+subsystem: schema
+tags: [typescript, rclone, registry, tdd, vitest, wave-0]
+
+# Dependency graph
+requires:
+  - 01-01 (Vite scaffold, Vitest configured)
+provides:
+  - BackendType union, FieldDef interface, BACKEND_REGISTRY constant (src/schemas/registry.ts)
+  - Wave 0 TDD stub: src/schemas/index.test.ts (SC-3 Zod schema acceptance criteria)
+  - Wave 0 TDD stub: src/store/reducer.test.ts (SC-4 wizardReducer acceptance criteria)
+affects:
+  - 01-03 (implements BACKEND_SCHEMAS against index.test.ts)
+  - 01-04 (implements wizardReducer against reducer.test.ts)
+  - Phase 2 (generates rclone.conf from BACKEND_REGISTRY key names)
+  - Phase 3 (renders dynamic forms from BACKEND_REGISTRY field definitions)
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns:
+    - "Registry pattern: BACKEND_REGISTRY as single source of truth for rclone field definitions"
+    - "Wave 0 TDD: write test stubs defining acceptance criteria before implementation exists"
+    - "FieldDef.key values MUST be snake_case matching rclone INI config key names exactly"
+
+key-files:
+  created:
+    - src/schemas/registry.ts
+    - src/schemas/registry.test.ts
+    - src/schemas/index.test.ts
+    - src/store/reducer.test.ts
+  modified: []
+
+key-decisions:
+  - "BACKEND_REGISTRY as Record<BackendType, FieldDef[]> — typed map drives both form rendering (Phase 3) and config generation (Phase 2)"
+  - "Wave 0 TDD stubs written before implementation — index.test.ts and reducer.test.ts fail RED intentionally until Plans 03-04"
+  - "All FieldDef.key values snake_case matching rclone config keys — wrong keys would silently produce broken .conf files"
+  - "s3 and s3-compatible share rclone type=s3, differentiated by provider field (AWS vs Other)"
+
+requirements-completed: []
+
+# Metrics
+duration: 2min
+completed: 2026-03-26
+---
+
+# Phase 01 Plan 02: Backend Schema Registry Summary
+
+**TypeScript schema registry with rclone-compatible field definitions for three backends (azureblob, s3, s3-compatible), plus Wave 0 TDD stubs establishing acceptance criteria for Plans 03 and 04**
+
+## Performance
+
+- **Duration:** ~2 min
+- **Started:** 2026-03-26T10:16:59Z
+- **Completed:** 2026-03-26T10:17:47Z
+- **Tasks:** 2
+- **Files modified:** 4
+
+## Accomplishments
+
+- Backend Schema Registry created as the single source of truth: `BackendType` union, `FieldDef` interface, `BACKEND_REGISTRY` constant with azureblob (3 fields), s3 (4 fields), and s3-compatible (5 fields)
+- All `FieldDef.key` values are snake_case matching rclone INI config key names exactly (verified: no uppercase in key values)
+- `registry.test.ts` written and passing: 7 tests GREEN covering backend presence, field structure, and key name validity
+- Wave 0 TDD stubs created: `index.test.ts` (8 tests for BACKEND_SCHEMAS Zod parsing) and `reducer.test.ts` (8 tests for wizardReducer actions) — both fail with "Cannot find module" as expected in RED phase
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Create the Backend Schema Registry** - `4c614fc` (feat)
+2. **Task 2: Write Wave 0 test stubs for SC-2, SC-3, SC-4** - `9e28bf9` (test)
+
+**Plan metadata:** _(committed after SUMMARY.md — see final commit)_
+
+## Files Created/Modified
+
+- `src/schemas/registry.ts` — BackendType union, FieldDef interface, BACKEND_REGISTRY with three backends
+- `src/schemas/registry.test.ts` — 7 tests verifying registry structure (GREEN, SC-2)
+- `src/schemas/index.test.ts` — 8 tests for BACKEND_SCHEMAS Zod safeParse (RED until Plan 03, SC-3)
+- `src/store/reducer.test.ts` — 8 tests for wizardReducer actions (RED until Plan 04, SC-4)
+
+## Decisions Made
+
+- `BACKEND_REGISTRY` typed as `Record<BackendType, FieldDef[]>` to guarantee TypeScript catches missing backends and malformed field definitions at compile time
+- Used `provider` select field with `options: [{ value: 'AWS', label: '...' }]` for s3 and `options: [{ value: 'Other', label: '...' }]` for s3-compatible — matches how rclone.conf differentiates them under the same `type=s3` entry
+- Wave 0 TDD stub approach: acceptance criteria written as failing tests before implementation, ensuring Plans 03-04 implement exactly what is specified here rather than discovering requirements during implementation
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+
+None.
+
+## User Setup Required
+
+None.
+
+## Next Phase Readiness
+
+- `src/schemas/registry.ts` ready for import by Plans 03 and 04
+- `src/schemas/index.test.ts` defines exact Zod schema behavior Plan 03 must implement (8 tests)
+- `src/store/reducer.test.ts` defines exact reducer action behavior Plan 04 must implement (8 tests)
+- CAUTION: Verify rclone key names against https://rclone.org/azureblob/ and https://rclone.org/s3/ before Phase 2 script generation — MEDIUM confidence on current key names
+
+---
+*Phase: 01-foundation*
+*Completed: 2026-03-26*
+
+## Self-Check: PASSED
+
+- src/schemas/registry.ts: FOUND
+- src/schemas/registry.test.ts: FOUND
+- src/schemas/index.test.ts: FOUND
+- src/store/reducer.test.ts: FOUND
+- .planning/phases/01-foundation/01-02-SUMMARY.md: FOUND
+- Commit 4c614fc (Task 1): FOUND
+- Commit 9e28bf9 (Task 2): FOUND