[Backend Release] v0.61.0

[deploystack-automation]

Backend Release v0.61.0

This PR prepares a new backend release.

When merged, this will:

1. Create a release tag
2. Build and publish a multi-architecture Docker image to Docker Hub

The Docker image will be available at:

• deploystack/backend:latest
• deploystack/backend:v0.61.0

Supported Architectures

• linux/amd64 (Intel/AMD)
• linux/arm64 (Apple Silicon, AWS Graviton)

Release notes:

• refactor(backend): replace Zod schemas with JSON schema for settings routes (078887f3)
• feat(all): add skip_oauth_flow flag for MCP catalog servers (154a8c0d)
• feat(all): add OAuth requirement field, hierarchical router improvements, and tool filtering (231b175e)
• fix(backend): update error codes for invalid database type validation (2b6694ad)
• fix(all): use WAF-friendly User-Agent headers for HTTP MCP server requests (2c9cae01)
• feat(all): enhance MCP config management and deploy wizard (46a897a8)
• fix(backend): sync OAuth client credentials on re-auth callback (540e637d)
• refactor(backend): simplify GitHub installation handling logic (54f88b82)
• fix(all): resolve OAuth popup not communicating back to parent window (5df38edd)
• feat(all): add reconnect button for offline HTTP/SSE MCP servers (92ff5093)
• chore(all): update dependencies (9a4e8cc3)
• fix(backend): update instance status during reconnection process (9fe1dee8)
• feat(all): auto-detect GitHub installations for user accounts (a41d5d00)
• fix(backend): handle 403 Forbidden as valid OAuth challenge response (c4611398)
• fix(backend): require request body for all API endpoints (d1aa2336)
• feat(all): add public GitHub repository deployment without GitHub App (f9045615)
• fix(backend): improve OAuth token refresh resilience for transient failures (ff34160f)

[deploystack-automation]

Release Branch Cleanup ✅

Branch backend-release has been automatically deleted after PR was merged.