[tomorrowthief]

Summary

Fixes #4151.

The seven Feishu tool plugins currently hardcode their proxy service URL. Add an optional api_base_url provider credential so self-hosted deployments can use a compatible internal gateway without modifying and repackaging the plugins.

• Preserve https://lark-plugin-api.solutionsuite.cn/lark-plugin as both the UI default and the runtime fallback for missing or blank values.
• Pass the configured URL through credential validation and every tool client initialization.
• Normalize whitespace and trailing slashes, preserve path prefixes, and validate HTTP(S) URLs. Store overrides per client instance.
• Document the proxy protocol requirement and bump each affected plugin from 0.0.x to 0.1.0 for this backward-compatible feature.

Affected plugins: Feishu Base, Calendar, Document, Message, Spreadsheet, Task, and Wiki. This changes existing official plugins; it does not add a community plugin.

Release Notes

Feishu plugins now support an optional API Base URL in provider credentials for compatible self-hosted proxy services. The existing service remains the default. Custom endpoints must implement the current proxy API contract; the Feishu Open Platform URL is not a direct replacement.

Change Type

• Non-LLM plugin (tools, extensions, datasource, etc.)

Screenshots / Videos

Not captured; this adds a provider credential text field.

Version

• Bumped top-level version in all seven manifest.yaml files to 0.1.0.
• SDK dependencies and lockfiles are unchanged by this PR.

Testing

• Passed Python syntax compilation for all affected Python files.

• Ran an offline harness against all seven actual client and authentication definitions with mocked HTTP requests: verified missing/blank defaults, custom URL normalization and path prefixes, instance isolation, invalid URL rejection, and custom endpoints for both token acquisition and a document API request.

• Checked all affected tool client initialization sites for credential forwarding.

• No live Dify deployment or Feishu integration test was performed. The offline harness bypasses the Dify runtime imports; production-environment validation is still needed.

• Local deployment

• SaaS (cloud.dify.ai)

Superseded by #4153 after renaming the source branch to feature/feishu-configurable-api-base-url.