docs: update CHANGELOG for 0.2.0 and refresh README roadmap

CHANGELOG.md:
- Added 0.2.0 release covering all work since 0.1.0 (Dec 2024)
- 12 Added items: dependency graph overhaul, DSM matrix, team rules,
  docs overhaul, error boundary, test suite, SEO, GitHub import,
  settings, real-time indexing, search v3, feedback pipeline
- 5 Changed items: dashboard redesign, NavLink fix, useQuery refactor,
  Docker env standardization, Repository type fix
- 3 Removed items: ReactFlow stack, old graph components, jsdom
- 5 Fixed items: object Object bug, search zoom, hover state,
  env comments, startup checks comment

README.md:
- Roadmap split into Shipped (12 items) and Coming Soon (5 items)
- Added all recently shipped features that were missing

Closes OPE-19, OPE-25

Author: DevanshuNEU

CHANGELOG.md

@@ -5,16 +5,40 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [0.2.0] - 2026-02-20
 
 ### Added
-- Frontend v2 redesign (in progress)
-- Anonymous repo indexing flow
-- AI-powered search summaries
+- **Dependency Graph Overhaul** (PR #246): Replaced ReactFlow with Sigma.js WebGL rendering. ForceAtlas2 layout with Louvain community detection for automatic clustering. Node search with zoom-to-focus, zoom controls, hover/click interactions with neighbor highlighting.
+- **Dependency Structure Matrix**: New directory-level DSM view showing cross-directory coupling. Circular dependency detection with red cell highlights. Click-to-drill from directory to file level.
+- **Team Rules Detection** (PR #244): Auto-detects CLAUDE.md, .cursorrules, and other AI assistant config files. Includes them in Codebase DNA extraction.
+- **Documentation Overhaul** (PR #240): 12 new docs pages covering API reference, architecture, deployment, MCP setup, and contributing guide.
+- **React Error Boundary**: Prevents white-screen crashes with recovery UI.
+- **Frontend Test Suite**: 13 smoke tests using Vitest + happy-dom covering ErrorBoundary, useGraphData, and useDirectoryMatrix. Tests integrated into CI pipeline.
+- **SEO Setup** (PR #245): Meta tags, sitemap, Open Graph.
+- **GitHub OAuth Import** (PR #230): Import repos directly from GitHub.
+- **Settings Page** (PR #231): User preferences and API key management.
+- **Real-time Indexing Progress** (PR #226): WebSocket-based live progress during repo indexing.
+- **Search v3** (PR #224): AI-powered search summaries, Cohere reranking.
+- **Feedback/Waitlist/Discord integration** (PR #232): User feedback pipeline.
 
 ### Changed
-- Premium dark theme with glassmorphism effects
-- Improved search result display
+- Dashboard redesigned with dark theme and glassmorphism (PR #219).
+- NavLink component moved to module scope to prevent remount on every render.
+- Replaced manual fetch-in-useEffect with React Query for repo list (30s polling, request dedup, caching).
+- Docker env vars standardized: SUPABASE_ANON_KEY (was SUPABASE_KEY), added SUPABASE_JWT_SECRET, VOYAGE_API_KEY, COHERE_API_KEY, SENTRY_DSN.
+- Repository type in useCachedQuery now uses shared interface (fixes undefined git_url).
+
+### Removed
+- ReactFlow, dagre, @types/dagre dependencies (replaced by Sigma.js stack).
+- Old DependencyGraph components: GraphNode.tsx, DirectoryNode.tsx, GraphToolbar.tsx.
+- jsdom (replaced by happy-dom for testing).
+
+### Fixed
+- [object Object] bug in DashboardHome toast messages (defensive error extraction).
+- Dependency graph search zoom coordinates (graphToViewport + camera offset calculation).
+- Search and hover competing for node highlight state (shared pinned/hovered model).
+- .env.example inline comments parsed as part of values by python-dotenv.
+- Startup env validation comment mismatch (2-tuple, not 3-tuple).
 
 ---
 

README.md

@@ -176,14 +176,25 @@ OpenCodeIntel is the tool I wish I had. It's open source because I think every d
 
 ## Roadmap
 
-- [x] Semantic code search
-- [x] GitHub OAuth integration  
-- [x] Dependency graph visualization
+### Shipped
+- [x] Semantic code search with AI summaries
+- [x] GitHub OAuth + repo import
+- [x] WebGL dependency graph (Sigma.js + ForceAtlas2 + Louvain clustering)
+- [x] Dependency Structure Matrix with circular dep detection
 - [x] Impact analysis
-- [x] MCP server for Claude
+- [x] Code style intelligence
+- [x] Codebase DNA extraction
+- [x] Team rules detection (CLAUDE.md, .cursorrules)
+- [x] MCP server for Claude Desktop / Cursor
+- [x] Real-time indexing progress (WebSocket)
+- [x] Full documentation site (12 pages)
+- [x] Frontend test suite (Vitest)
+
+### Coming Soon
+- [ ] MCP authentication overhaul (unified config)
 - [ ] VS Code extension
-- [ ] Team workspaces
 - [ ] Self-hosted Ollama support (no OpenAI required)
+- [ ] Team workspaces
 - [ ] GitLab / Bitbucket support
 
 Want to influence the roadmap? [Open an issue](https://github.com/OpenCodeIntel/opencodeintel/issues).