docs(studio): streamline roadmap with realistic 3-phase plan for 2026

- Consolidate from 8 phases to 3 focused phases (16 weeks total)
- Clarify plugin-based architecture (core infrastructure only)
- Document three-tier plugin ecosystem:
  * Built-in: Basic Object Inspector (educational example)
  * Official: Proprietary plugins in objectstack-ai/studio repo
  * Community: Third-party plugins
- Add realistic success metrics and architectural guidelines
- Remove overly ambitious features from core roadmap

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

Author: Claude

apps/studio/ROADMAP.md

@@ -10,17 +10,22 @@
 
 **Studio is a plugin platform, not a monolithic IDE.**
 
-- **This project:** Core infrastructure (plugin system, kernel, navigation, testing, routing)
-- **Designer plugins:** Developed in separate repositories as independent Studio plugins
-- **Plugin examples:** Object Designer, View Designer, Flow Designer, etc. are external plugins
+- **This project:** Core infrastructure (plugin system, kernel, navigation, testing, routing) + **one basic plugin example**
+- **Designer plugins:** Official plugins developed in [objectstack-ai/studio](https://github.com/objectstack-ai/studio) (non-open-source)
+- **Community plugins:** Third-party designers can be built and distributed independently
 
 This approach ensures:
 - **Modularity:** Each designer is independently developed, tested, and versioned
 - **Maintainability:** Core framework stays lean and focused
 - **Extensibility:** Community can build custom designers without forking Studio
 - **Scalability:** Designers can be loaded on-demand, reducing bundle size
+- **Commercial viability:** Official advanced designers can be proprietary while core remains open-source
 
-**Reference Implementation:** See `packages/plugins/plugin-*` for plugin development patterns.
+**Built-in Example:** This repo includes a basic Object Inspector plugin to demonstrate the plugin API.
+
+**Official Plugins:** Advanced designers (Object Designer, View Designer, Flow Designer, etc.) are developed separately in the [studio repository](https://github.com/objectstack-ai/studio).
+
+**Reference Implementation:** See `apps/studio/src/plugins/built-in/` for the example plugin patterns.
 
 ---
 
@@ -80,7 +85,7 @@ This approach ensures:
 
 **Deliverable:** Production-ready plugin infrastructure for external designers.
 
-**Note:** Designer implementations (Object Designer, View Designer, etc.) will be developed as separate plugins in external repositories.
+**Note:** This phase includes one built-in example plugin (Basic Object Inspector). Advanced designer implementations will be developed in the [official studio repository](https://github.com/objectstack-ai/studio).
 
 ---
 
@@ -101,7 +106,7 @@ This approach ensures:
 
 **Deliverable:** AI-powered IDE with plugin extensibility.
 
-**Note:** Actual designers (Object Designer, View Designer, Form Designer) are external plugins.
+**Note:** Official advanced designers (Object Designer, View Designer, Form Designer) are developed in [objectstack-ai/studio](https://github.com/objectstack-ai/studio) as proprietary plugins.
 
 ---
 
@@ -122,7 +127,7 @@ This approach ensures:
 
 **Deliverable:** Complete plugin development environment.
 
-**Note:** External repositories can now build full-featured designers (Object Designer, Flow Designer, etc.) using the plugin infrastructure.
+**Note:** The [official studio repository](https://github.com/objectstack-ai/studio) uses this infrastructure to build full-featured proprietary designers.
 
 ---
 
@@ -133,7 +138,8 @@ This approach ensures:
             ├─ URL Router + Testing
             ├─ Plugin Sidebar Groups
             ├─ Plugin Hot Reload
-            └─ Plugin API Docs
+            ├─ Plugin API Docs
+            └─ Basic Object Inspector Plugin (built-in example)
 
 2026 Q3  ── Phase 2: AI Integration & Tools      [6 weeks]
             ├─ AI Copilot Enhancement
@@ -147,13 +153,16 @@ This approach ensures:
             ├─ Version Control Integration
             └─ Plugin Starter Kit
 
-External ── Designer Plugins (Separate Repos)
+External ── Official Designer Plugins (objectstack-ai/studio - Proprietary)
             ├─ Object Designer Plugin
             ├─ View Designer Plugin
             ├─ Form Designer Plugin
             ├─ Flow Designer Plugin
             ├─ Dashboard Designer Plugin
-            └─ Community Plugins...
+            └─ Agent Designer Plugin
+
+Community── Community Plugins (Open Ecosystem)
+            └─ Custom designers by third-party developers
 ```
 
 ---
@@ -219,20 +228,24 @@ export const myPlugin: StudioPlugin = {
 
 ## 🚫 What We're NOT Building in Core Studio
 
-**Core Studio = Plugin Infrastructure Only**
+**Core Studio = Plugin Infrastructure + One Example**
+
+The following are **external plugin responsibilities** (developed in [objectstack-ai/studio](https://github.com/objectstack-ai/studio)):
 
-The following are **external plugin responsibilities**, not core framework features:
+- ❌ Object Designer UI (official proprietary plugin)
+- ❌ View Designer UI (official proprietary plugin)
+- ❌ Form Designer UI (official proprietary plugin)
+- ❌ Flow Designer UI (official proprietary plugin)
+- ❌ Dashboard Designer UI (official proprietary plugin)
+- ❌ Agent Designer UI (official proprietary plugin)
+- ❌ Security/permission UI (official proprietary plugin)
+- ❌ Full Airtable Interface parity (official proprietary plugins)
+- ❌ Advanced automation designers (official proprietary plugins)
+- ❌ Enterprise-specific UI (official proprietary plugins)
 
-- ❌ Object Designer UI (external plugin)
-- ❌ View Designer UI (external plugin)
-- ❌ Form Designer UI (external plugin)
-- ❌ Flow Designer UI (external plugin)
-- ❌ Dashboard Designer UI (external plugin)
-- ❌ Agent Designer UI (external plugin)
-- ❌ Security/permission UI (external plugin)
-- ❌ Full Airtable Interface parity (external plugins)
-- ❌ Advanced automation designers (external plugins)
-- ❌ Enterprise-specific UI (external plugins)
+**Built-in in Core Studio:**
+- ✅ Basic Object Inspector plugin (example/reference implementation)
+- ✅ Generic JSON metadata viewer (fallback)
 
 **Also Deferred:**
 - ❌ Mobile/responsive mode (desktop-first)
@@ -241,19 +254,43 @@ The following are **external plugin responsibilities**, not core framework featu
 
 ---
 
-## 📦 Example Designer Plugins (External Repos)
+## 📦 Plugin Ecosystem
 
-These are reference implementations to demonstrate plugin capabilities:
+### Built-in (This Repository - Open Source)
+
+**Basic Object Inspector Plugin** — Minimal reference implementation
+- Read-only object schema viewer
+- Field list with type badges
+- Simple data browser
+- Demonstrates plugin API patterns
+
+**Purpose:** Educational example for plugin developers
+
+---
+
+### Official Plugins (objectstack-ai/studio - Proprietary)
+
+Advanced designer plugins developed and maintained by ObjectStack:
+
+1. **Object Designer** — Visual object & field editor with drag-and-drop
+2. **View Designer** — Grid/Kanban/Calendar/Gantt view configurator
+3. **Form Designer** — Layout editor with conditional visibility
+4. **Flow Designer** — Automation flow canvas with BPMN support
+5. **Dashboard Designer** — Interactive dashboard layout editor
+6. **Agent Designer** — AI agent configuration with RAG pipeline builder
+
+**Distribution:** Available via npm registry or private plugin marketplace
+
+**License:** Proprietary (requires license key)
+
+---
 
-1. **@objectstack/studio-object-designer** — Visual object & field editor
-2. **@objectstack/studio-view-designer** — Grid/Kanban/Calendar view configurator
-3. **@objectstack/studio-flow-designer** — Automation flow canvas
-4. **@objectstack/studio-dashboard-designer** — Dashboard layout editor
+### Community Plugins (Third-Party - Variable Licensing)
 
-Each plugin is independently:
-- Versioned
-- Tested
-- Documented
-- Distributed via npm
+Community developers can build custom designers:
+- Industry-specific metadata editors
+- Custom workflow designers
+- Integration-specific tools
+- Specialized data visualizers
 
-Community can build custom designers following these patterns.
+**Plugin Development:** Follow the plugin API documented in Phase 1.7