fix(mcp): simplify create task schema

[FujiwaraChoki]

Summary

• flatten supoclip_create_clip_task parameters to simple JSON-schema types
• keep backend validation/sanitization inside the tool
• avoid nullable/Annotated schema shapes that remote MCP clients may drop

Verification

• cd mcp && uv run python -m compileall src
• local list_tools shows supoclip_create_clip_task requires url with plain string schema
• local call_tool with url reaches auth handling instead of url-missing validation

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Project	Deployment	Actions	Updated (UTC)
supoclip	Ready	Preview, Comment	Jun 29, 2026 12:30am

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Handle null optional string arguments

When an existing MCP client sends JSON null for optional fields that the previous schema explicitly allowed (for example title, and similarly font_family/font_color below), the tool now calls .strip() on None and returns an unexpected AttributeError before it ever reaches auth or the backend. This breaks callers that still serialize omitted optional parameters as null; normalize these the same way url and caption_template already do, e.g. via (title or "").strip().

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