v2.3.0

Added

• Cloud endpoint table in AGENTS.md (REST, MCP SSE, Swagger, Health)
• Cold start guidance (~30s after 15 min idle on Render free tier)
• SKILL.md cloud fallback: local engine → MCP tools → REST API

Changed

• All MCP SSE URLs updated to /mcp/sse (unified mount point)
• openapi.yaml server URL set to actual Render instance
• .skill download uses unzip (ZIP format since v2.1.3)
• api.py VERSION constant synced