v0.3.0

Added

• Architecture diagram workspace with interactive canvas, nodes, edges, boundaries, layout, and export (/diagrams)
• Scoped diagram connection management (/connect) with cryptographic token issuance, validation, and revocation
• Signed-in user profile display in sidebar footer with Cloudflare Access JWT resolution
• Dedicated database migrations for architecture diagrams (0005) and Connect access tokens (0006)
• Automated integration test suites for diagrams (run-diagram-e2e.ts) and Connect (run-connect-e2e.ts)

Changed

• Coordinated local development domain routing through Caddy