docs(01-04): complete WizardState store plan

- 01-04-SUMMARY.md: TDD reducer + Context API store complete, 8 tests green, build clean
- STATE.md: progress 100%, decisions added, session updated
- ROADMAP.md: Phase 01 all 4 plans complete

.planning/ROADMAP.md

@@ -12,7 +12,7 @@ Ready2Blob is built inside-out: architectural foundation first, then pure genera
 
 Decimal phases appear between their surrounding integers in numeric order.
 
-- [ ] **Phase 1: Foundation** - Project scaffold, TypeScript types, Backend Schema Registry, Zod schemas, and wizard state store
+- [x] **Phase 1: Foundation** - Project scaffold, TypeScript types, Backend Schema Registry, Zod schemas, and wizard state store (completed 2026-03-26)
 - [ ] **Phase 2: Generators** - Pure builder functions for rclone.conf and PowerShell deployment scripts, plus download manager
 - [ ] **Phase 3: Wizard UI** - Multi-step wizard with backend selector, dynamic backend forms, and deployment options
 - [ ] **Phase 4: Review, Download & Security** - Live config preview, security warning gate, all download buttons, clipboard copy, and ZIP bundle
@@ -79,7 +79,7 @@ Phases execute in numeric order: 1 → 2 → 3 → 4
 
 | Phase | Plans Complete | Status | Completed |
 |-------|----------------|--------|-----------|
-| 1. Foundation | 3/4 | In Progress|  |
+| 1. Foundation | 4/4 | Complete   | 2026-03-26 |
 | 2. Generators | 0/? | Not started | - |
 | 3. Wizard UI | 0/? | Not started | - |
 | 4. Review, Download & Security | 0/? | Not started | - |

.planning/STATE.md

@@ -3,14 +3,14 @@ gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
 status: executing
-stopped_at: Completed 01-03-PLAN.md — Zod schema builder from BACKEND_REGISTRY
+stopped_at: Completed 01-04-PLAN.md — WizardState store complete (types, reducer, context, App wiring)
-last_updated: "2026-03-26T09:22:18.904Z"
+last_updated: "2026-03-26T09:26:07.358Z"
 last_activity: 2026-03-26 — Completed plan 01-02 (Backend Schema Registry)
 progress:
   total_phases: 4
-  completed_phases: 0
+  completed_phases: 1
   total_plans: 4
-  completed_plans: 3
+  completed_plans: 4
   percent: 50
 ---
 
@@ -51,6 +51,7 @@ Progress: [█████░░░░░] 50%
 
 *Updated after each plan completion*
 | Phase 01-foundation P03 | 1 | 1 tasks | 1 files |
+| Phase 01-foundation P04 | 2min | 2 tasks | 4 files |
 
 ## Accumulated Context
 
@@ -70,6 +71,9 @@ Recent decisions affecting current work:
 - [Phase 01-02]: All FieldDef.key values snake_case matching rclone config key names exactly — wrong keys would silently break generated .conf files
 - [Phase 01-foundation]: buildZodSchema loops over BACKEND_REGISTRY — field names never hardcoded in Zod schemas, registry is single source of truth for validation shape
 - [Phase 01-foundation]: BACKEND_SCHEMAS exported as const — TypeScript narrows to exact backend schema type at call sites
+- [Phase 01-foundation]: useReducer + Context API chosen over external state library — zero dependencies, sufficient for 4-step wizard
+- [Phase 01-foundation]: useWizard throws on missing provider — fail fast prevents silent undefined state propagation
+- [Phase 01-foundation]: INITIAL_STATE.deployment.scriptTargets defaults to both ['intune','rmm'] — users deselect rather than discover
 
 ### Pending Todos
 
@@ -83,6 +87,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-03-26T09:22:18.900Z
+Last session: 2026-03-26T09:26:07.353Z
-Stopped at: Completed 01-03-PLAN.md — Zod schema builder from BACKEND_REGISTRY
+Stopped at: Completed 01-04-PLAN.md — WizardState store complete (types, reducer, context, App wiring)
 Resume file: None

.planning/phases/01-foundation/01-04-SUMMARY.md

@@ -0,0 +1,125 @@
+---
+phase: 01-foundation
+plan: "04"
+subsystem: store
+tags: [typescript, react, useReducer, context, tdd, vitest, security]
+
+# Dependency graph
+requires:
+  - 01-02 (BackendType from registry.ts, reducer.test.ts TDD stub)
+  - 01-03 (completes schemas layer alongside store layer)
+provides:
+  - WizardState interface, WizardAction union type, INITIAL_STATE constant (src/store/types.ts)
+  - Pure wizardReducer function (src/store/reducer.ts)
+  - WizardContext, WizardProvider, useWizard hook (src/store/context.tsx)
+  - App.tsx wired with WizardProvider as root context
+affects:
+  - Phase 2 (script generator reads WizardState.remote and WizardState.deployment)
+  - Phase 3 (form components call useWizard to read/write state)
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns:
+    - "Pure reducer pattern: wizardReducer has no side effects, no localStorage, no async"
+    - "useReducer + Context API: centralized state without external state library"
+    - "Null-guarded hook: useWizard throws if used outside WizardProvider"
+    - "SECU-03 enforcement via comment contract in types.ts — in-memory only, tab close clears credentials"
+
+key-files:
+  created:
+    - src/store/types.ts
+    - src/store/reducer.ts
+    - src/store/context.tsx
+  modified:
+    - src/App.tsx
+
+key-decisions:
+  - "useReducer + Context API chosen over external state library — zero dependencies, sufficient for 4-step wizard"
+  - "useWizard throws on missing provider — fail fast prevents silent undefined state propagation"
+  - "INITIAL_STATE.deployment.scriptTargets defaults to both ['intune', 'rmm'] — users deselect rather than discover"
+
+requirements-completed: []
+
+# Metrics
+duration: 2min
+completed: 2026-03-26
+---
+
+# Phase 01 Plan 04: WizardState Store Summary
+
+**Pure reducer + React Context store for wizard state: types, wizardReducer (8 tests green), WizardProvider, and useWizard hook wired into App.tsx with zero browser storage access (SECU-03)**
+
+## Performance
+
+- **Duration:** ~2 min
+- **Started:** 2026-03-26T10:23:09Z
+- **Completed:** 2026-03-26T10:24:49Z
+- **Tasks:** 2
+- **Files modified:** 4
+
+## Accomplishments
+
+- `src/store/types.ts` created: `WizardState` interface with `remote` (name, backendType, params) and `deployment` (includeInstall, configPath, scriptTargets) sub-objects; `WizardAction` union type (6 action variants); `INITIAL_STATE` constant; re-exports `BackendType` from registry for single-import convenience
+- `src/store/reducer.ts` created: pure `wizardReducer` handling all 6 action types via spread operators — no mutation, no side effects
+- All 8 tests in `src/store/reducer.test.ts` pass GREEN (covering INIT, SET_STEP, SET_BACKEND_TYPE, SET_REMOTE_NAME, SET_REMOTE_PARAMS, SET_DEPLOYMENT, RESET, purity check)
+- `src/store/context.tsx` created: `WizardProvider` (useReducer wrapper), `useWizard` hook (throws on missing provider), typed `WizardContextValue` interface
+- `src/App.tsx` updated: content wrapped in `<WizardProvider>` — all future components can call `useWizard()` without prop drilling
+- Full test suite: 23 tests pass across 3 files (registry.test.ts, schemas/index.test.ts, store/reducer.test.ts)
+- `npm run build` exits 0 — no TypeScript errors
+- SECU-03 verified: no `localStorage`, `sessionStorage`, or `IndexedDB` method calls in any store file
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Implement WizardState types and pure reducer** - `3fade79` (feat)
+2. **Task 2: Create WizardContext provider and wire into App** - `2eef722` (feat)
+
+**Plan metadata:** _(committed after SUMMARY.md — see final commit)_
+
+## Files Created/Modified
+
+- `src/store/types.ts` — WizardState, WizardAction, INITIAL_STATE, re-exports BackendType
+- `src/store/reducer.ts` — pure wizardReducer function (8 tests)
+- `src/store/context.tsx` — WizardContext, WizardProvider, useWizard hook
+- `src/App.tsx` — wrapped with WizardProvider
+
+## Decisions Made
+
+- `useReducer + Context API` chosen over Zustand/Redux — zero external dependencies, sufficient for a 4-step linear wizard
+- `useWizard()` throws `Error('useWizard must be used inside <WizardProvider>')` on missing provider — fail fast, no silent undefined propagation
+- `scriptTargets` defaults to `['intune', 'rmm']` (both selected) — users opt-out rather than opt-in, reducing the chance of incomplete output
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+
+None. TDD RED→GREEN flow was clean. Build passed on first attempt.
+
+## User Setup Required
+
+None.
+
+## Next Phase Readiness
+
+- All store types exported from `src/store/types.ts` — Phase 3 form components import `WizardState`, `WizardAction`, `useWizard`
+- `src/store/context.tsx` exports `useWizard` — components call `const { state, dispatch } = useWizard()` to read/write wizard data
+- Phase 2 script generator reads `state.remote.backendType`, `state.remote.name`, `state.remote.params` and `state.deployment` for config/script output
+- Foundation layer complete: registry + schemas + store all implemented and tested (23 tests green)
+
+---
+*Phase: 01-foundation*
+*Completed: 2026-03-26*
+
+## Self-Check: PASSED
+
+- src/store/types.ts: FOUND
+- src/store/reducer.ts: FOUND
+- src/store/context.tsx: FOUND
+- src/App.tsx: FOUND
+- .planning/phases/01-foundation/01-04-SUMMARY.md: FOUND
+- Commit 3fade79 (Task 1): FOUND
+- Commit 2eef722 (Task 2): FOUND