Feishu (Lark) entry point for DeepSeek Harness

Key features

• Fluent response card (default open): A real-time "DSH processing..." card for each task, reflecting on, answering drafts, tool call panel (state sign, toolname, parameter summary) updated with PATCH
• Completed Sealed as Green End (final return + time + word) with an error of red error
• Proactive deliveryangent can proactively deliver text/cards to sessions (intermediate reporting, distribution of results, voluntary reminder) using feishu send tool
• Interactive Questions and Answers & Approving Card: assk user qastion and ToolApproving Rendering button card, click to answer