Features/data plugin UI

[Chenglong-MS]

This pull request introduces a comprehensive overhaul of deployment documentation and configuration for Data Formulator, focusing on clarity, security, and ease of setup for different deployment scenarios. The main changes are the introduction of explicit "Deployment Profiles" (single-user local, multi-user anonymous demo, multi-user authenticated enterprise), improved guidance for secure configuration, and clearer explanations of the identity system and its security implications. Environment variable templates and documentation have been updated to match these new profiles and best practices.

Deployment Profiles & Configuration:

• Added detailed documentation for three deployment profiles (local, demo, enterprise) in DEVELOPMENT.md, including recommended CLI flags, environment variables, and security notes for each scenario. This helps users select and configure the appropriate setup for their use case.
• Updated .env.template with new feature gates (DISABLE_DATA_CONNECTORS, DISABLE_CUSTOM_MODELS), and included example settings for each deployment profile, making it easier to configure secure deployments. [1] [2]

Security & Identity System:

• Rewrote and expanded the security section to clarify the identity model, storage isolation, and risks of anonymous mode. Provided clear tables and flow diagrams for how identities are resolved and how storage is isolated by identity.
• Explained the rationale behind each feature flag and its security impact, especially regarding credential exposure, SSRF risks, and workspace persistence.

Reference Material & Usability:

• Added a comprehensive CLI/environment variable reference table and a deployment profile comparison table for quick reference.
• Clarified the authentication architecture and provided a simplified guide for configuring various auth providers.

These changes make it significantly easier and safer to deploy Data Formulator in a variety of environments, reducing the risk of misconfiguration and credential leaks.

[Chenglong-MS]

@copilot resolve the merge conflicts in this pull request

[Copilot]

@copilot resolve the merge conflicts in this pull request

Merged origin/dev into this branch — no conflicts were encountered. The merge commit is 0d31f4f.