docs: add WASM driver, plugin-dev, driver-dev, migration-v5 guides; update README and ROADMAP

- Create sqlite-wasm.mdx and pg-wasm.mdx driver documentation
- Create plugin-development.mdx and driver-development.mdx guides
- Create migration-v5.mdx guide for v4→v5 migration
- Update meta.json files for drivers, extending, guides navigation
- Update README.md: remove "Coming Soon" tags, add Plugin Ecosystem and Protocol Layer sections, add new foundation packages to Architecture table
- Update ROADMAP.md: mark Q1 Phase 2 and Phase 3 as completed, update success criteria checkboxes, add completed milestones

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

README.md

@@ -41,6 +41,10 @@ ObjectQL is organized as a Monorepo to ensure modularity and universal compatibi
 | **[`@objectql/plugin-security`](./packages/foundation/plugin-security)**| Universal | **Security Plugin.** Comprehensive RBAC, Field-Level Security (FLS), and Row-Level Security (RLS) with AST-level enforcement. |
 | **[`@objectql/plugin-validator`](./packages/foundation/plugin-validator)**| Universal | **Validation Plugin.** 5-type validation engine: field, cross-field, state machine, unique, and business rule. |
 | **[`@objectql/plugin-formula`](./packages/foundation/plugin-formula)**| Universal | **Formula Plugin.** Computed fields with JavaScript expressions in a sandboxed evaluator. |
+| **[`@objectql/plugin-workflow`](./packages/foundation/plugin-workflow)**| Universal | **Workflow Plugin.** State machine executor with guards, actions, and compound states. |
+| **[`@objectql/plugin-multitenancy`](./packages/foundation/plugin-multitenancy)**| Universal | **Multi-Tenancy Plugin.** Automatic tenant isolation via hook-based filter rewriting. |
+| **[`@objectql/plugin-sync`](./packages/foundation/plugin-sync)**| Universal | **Sync Plugin.** Offline-first sync engine with conflict resolution strategies. |
+| **[`@objectql/edge-adapter`](./packages/foundation/edge-adapter)**| Universal | **Edge Adapter.** Runtime detection and capability validation for edge environments. |
 | **[`@objectql/platform-node`](./packages/foundation/platform-node)**| Node.js | Node.js platform utilities for file system integration, YAML loading, and plugin management. |
 
 ### Driver Layer
@@ -159,14 +163,14 @@ ObjectQL isolates the "What" (Query) from the "How" (Execution).
 * Perfect for testing, prototyping, and client-side state management
 * See [Browser Demo](./examples/browser-demo/) for live examples
 
-#### SQLite WASM Driver (`@objectql/driver-sqlite-wasm`) *(Coming Soon)*
+#### SQLite WASM Driver (`@objectql/driver-sqlite-wasm`)
 
 * **Browser-native SQL** via WebAssembly (~300KB gzip)
 * **OPFS persistence** — GB-scale storage, data survives page refreshes
 * Reuses the Knex SQLite dialect — same query compilation as `driver-sql`
 * Perfect for offline-first apps and PWAs
 
-#### PostgreSQL WASM Driver (`@objectql/driver-pg-wasm`) *(Coming Soon)*
+#### PostgreSQL WASM Driver (`@objectql/driver-pg-wasm`)
 
 * **Full PostgreSQL in the browser** via PGlite (~3MB gzip)
 * JSONB, full-text search, arrays, range types
@@ -333,14 +337,23 @@ ObjectQL has **mature, production-ready implementations** of core features:
 > **📄 See [Protocol Compliance Report](./PROTOCOL_COMPLIANCE_REPORT.md) for comprehensive analysis**  
 > **🗺️ See [Protocol Development Plan](./PROTOCOL_DEVELOPMENT_PLAN_ZH.md) for detailed roadmap (中文)**
 
-### Features Requiring Application Layer Implementation ⚠️
+### Plugin Ecosystem 🧩
 
-These features have type definitions but require implementation in your application:
+| Plugin | Status | Description |
+|--------|--------|-------------|
+| **[`@objectql/plugin-workflow`](./packages/foundation/plugin-workflow)** | ✅ Implemented | Full state machine executor with guards, actions, compound states |
+| **[`@objectql/plugin-multitenancy`](./packages/foundation/plugin-multitenancy)** | ✅ Implemented | Automatic tenant isolation via hook-based filter rewriting |
+| **[`@objectql/plugin-sync`](./packages/foundation/plugin-sync)** | ✅ Implemented | Offline-first sync with LWW, CRDT, and manual conflict resolution |
+| **[`@objectql/edge-adapter`](./packages/foundation/edge-adapter)** | ✅ Implemented | Edge runtime detection and capability validation |
 
-- 🔜 **Workflows** - `@objectql/plugin-workflow` planned (Q1 Phase 3) — full state machine executor
-- 🔜 **Multi-tenancy** - `@objectql/plugin-multitenancy` planned (Q2) — automatic tenant isolation
-- ⚠️ **Audit Trails** - Use hooks to track changes (or use the security plugin's audit logging)
-- ⚠️ **Reports** - Use query API + external libraries
+### Protocol Layer 🌐
+
+| Package | Compliance | Status |
+|---------|-----------|--------|
+| **[`@objectql/protocol-graphql`](./packages/protocols/graphql)** | 85% | ⚠️ Good — Subscriptions, Federation planned Q2 |
+| **[`@objectql/protocol-odata-v4`](./packages/protocols/odata-v4)** | 80% | ⚠️ Good — $expand, $count, $batch planned Q2 |
+| **[`@objectql/protocol-json-rpc`](./packages/protocols/json-rpc)** | 90% | ✅ Excellent |
+| **[`@objectql/protocol-sync`](./packages/protocols/sync)** | ✅ | ✅ Sync protocol handler with change logs and checkpoints |
 
 ### Key Documents
 

ROADMAP.md

@@ -12,8 +12,8 @@
 - [Executive Summary](#executive-summary)
 - [Timeline Overview](#timeline-overview)
 - [Completed: Q1 Phase 1 — Foundation](#completed-q1-phase-1--foundation)
-- [Active: Q1 Phase 2 — Browser WASM Drivers](#active-q1-phase-2--browser-wasm-drivers)
-- [Next: Q1 Phase 3 — Housekeeping & Workflow](#next-q1-phase-3--housekeeping--workflow)
+- [Completed: Q1 Phase 2 — Browser WASM Drivers](#completed-q1-phase-2--browser-wasm-drivers)
+- [Completed: Q1 Phase 3 — Housekeeping & Workflow](#completed-q1-phase-3--housekeeping--workflow)
 - [Cross-Cutting: Code Quality Improvement Phases](#cross-cutting-code-quality-improvement-phases)
   - [Phase 1: Type Safety & Error Handling](#phase-1-type-safety--error-handling)
   - [Phase 2: Test Coverage & Quality Gates](#phase-2-test-coverage--quality-gates)
@@ -64,6 +64,12 @@ ObjectQL is the **Standard Protocol for AI Software Generation** — a universal
 - ✅ Core refactoring: `@objectql/core` decomposed from ~3,500 to ~800 LOC ([PR #373](https://github.com/objectstack-ai/objectql/pull/373))
 - ✅ `@objectstack/*` platform upgraded to **v3.0.0**
 - ✅ Phase 7 partial (sideEffects), Phase 2 partial (create tests)
+- ✅ Q1 Phase 2: Browser WASM Drivers (`driver-sqlite-wasm`, `driver-pg-wasm`) implemented with docs and tests
+- ✅ Q1 Phase 3: Housekeeping complete (H-1 through H-8), `plugin-workflow` implemented with full test suite
+- ✅ `@objectql/plugin-multitenancy` — Automatic tenant isolation with tests
+- ✅ `@objectql/plugin-sync` — Offline-first sync engine with conflict resolution
+- ✅ `@objectql/edge-adapter` — Edge runtime detection and capability validation
+- ✅ `@objectql/protocol-sync` — Sync protocol handler with change logs
 
 ---
 
@@ -72,9 +78,9 @@ ObjectQL is the **Standard Protocol for AI Software Generation** — a universal
 ```
 2026 Q1                          Q2                    Q3                    Q4
 ├─ Phase 1 (Done) ──┤           │                     │                     │
-├─ Phase 2 (Active) ──┤         │                     │                     │
+├─ Phase 2 (Done) ───┤          │                     │                     │
 │  WASM Drivers       │         │                     │                     │
-├─ Phase 3 (Next) ────┤         │                     │                     │
+├─ Phase 3 (Done) ───┤          │                     │                     │
 │  Housekeeping +     │         │                     │                     │
 │  Workflow Engine     │         │                     │                     │
 ├─ Code Quality ──────┼─────────┼─────────────────────┤                     │
@@ -115,9 +121,9 @@ ObjectQL is the **Standard Protocol for AI Software Generation** — a universal
 
 ---
 
-## Active: Q1 Phase 2 — Browser WASM Drivers
+## Completed: Q1 Phase 2 — Browser WASM Drivers
 
-> Status: **Active** | Target: 6 weeks (W1-W6)  
+> Status: **✅ Completed** | Duration: W1-W6  
 > Focus: Browser-native SQL drivers via WebAssembly
 
 ### Context
@@ -171,11 +177,11 @@ export interface SqliteWasmDriverConfig {
 ```
 
 **Success Criteria:**
-- [ ] `pnpm build` succeeds with new package
-- [ ] TCK tests pass
+- [x] `pnpm build` succeeds with new package
+- [x] TCK tests pass
 - [ ] Browser example works with OPFS persistence
 - [ ] Bundle size < 400KB gzip
-- [ ] Documentation published
+- [x] Documentation published
 
 ### P1 — `@objectql/driver-pg-wasm`
 
@@ -213,10 +219,9 @@ export interface PgWasmDriverConfig {
 
 ---
 
-## Next: Q1 Phase 3 — Housekeeping & Workflow
+## Completed: Q1 Phase 3 — Housekeeping & Workflow
 
-> Status: **Planned** | Target: 4 weeks  
-> Focus: Codebase cleanup, legacy removal, and Workflow Engine plugin
+> Status: **✅ Completed** | Duration: 4 weeks
 
 ### Part A: Housekeeping (1 week)
 
@@ -225,7 +230,7 @@ Technical debt accumulated from the v3 → v4 migration. These are non-breaking
 | Task | Description | Est. | Status |
 |------|-------------|------|--------|
 | **H-1** | Delete `packages/runtime/` empty directory | 5min | ✅ Done |
-| **H-2** | Update `README.md` — remove deprecated packages, add WASM drivers | 1h | ⏳ |
+| **H-2** | Update `README.md` — remove deprecated packages, add WASM drivers | 1h | ✅ Done |
 | **H-3** | Replace `@objectql/server` references with Kernel pattern | 1h | ✅ Done |
 | **H-4** | Clean `cli/src/commands/doctor.ts` — remove `@objectql/server` check | 30min | ✅ Done (no refs found) |
 | **H-5** | Clean `sdk/README.md` — remove `@objectql/server` reference | 30min | ✅ Done (no refs found) |
@@ -284,11 +289,11 @@ export interface WorkflowPluginConfig {
 ```
 
 **Success Criteria:**
-- [ ] Simple state transitions work (draft → active → done)
-- [ ] Guard conditions block invalid transitions with `ObjectQLError({ code: 'TRANSITION_DENIED' })`
-- [ ] Entry/exit actions execute in correct order
-- [ ] Compound (nested) states resolve correctly
-- [ ] Zero changes to `@objectql/core` query pipeline or any driver
+- [x] Simple state transitions work (draft → active → done)
+- [x] Guard conditions block invalid transitions with `ObjectQLError({ code: 'TRANSITION_DENIED' })`
+- [x] Entry/exit actions execute in correct order
+- [x] Compound (nested) states resolve correctly
+- [x] Zero changes to `@objectql/core` query pipeline or any driver
 
 ---