Add MCP-specific Appwrite user agent

[ChiragAgg5k]

Summary

• add shared MCP header configuration for Appwrite SDK clients
• set User-Agent to AppwriteMCP/{SERVER_VERSION} while preserving SDK platform details
• cover API-key, introspection, and OAuth request client builders with unit tests

Testing

• uv run --group dev ruff check src tests
• uv run --group dev black --check src tests
• uv run --group dev pyright
• uv run python -m unittest discover -s tests/unit -v

[greptile-apps]

Greptile Summary

This PR centralizes the Appwrite SDK client header configuration into a shared _configure_mcp_client_headers helper and sets a proper AppwriteMCP/{SERVER_VERSION} user-agent that preserves any platform tokens appended by the SDK, replacing the previous bare x-sdk-name: mcp header addition.

• _configure_mcp_client_headers is called by all three client builders (build_client, build_introspection_client, build_client_for_request), correctly removing the SDK's own name token from the user-agent while keeping trailing platform details (e.g. Python version).
• New unit tests cover all three builders and assert both the correct user-agent prefix and the absence of AppwritePythonSDK in the final header.

Confidence Score: 5/5

Safe to merge — the change is limited to header construction helpers and their tests, with no effect on request logic, auth, or data handling.

The refactoring is straightforward: a pure function replaces duplicated header-setting lines, all three client builders are updated consistently, and the new tests exercise each builder. The suffix-extraction logic correctly handles both the case where the SDK user-agent has a space-separated platform token and the case where it does not.

No files require special attention.

Important Files Changed

Filename	Overview
src/mcp_server_appwrite/server.py	Introduces _configure_mcp_client_headers helper that replaces the SDK's default user-agent prefix with AppwriteMCP/{SERVER_VERSION} while preserving any trailing platform tokens; all three client builders updated to use it.
tests/unit/test_server.py	Adds assert_mcp_client_headers helper and three new tests covering build_client, build_introspection_client, and build_client_for_request for the new MCP user-agent and x-sdk-name header behaviour.

_{Reviews (2): Last reviewed commit: "Address MCP header helper review feedbac..." | Re-trigger Greptile}