feat(search): Semantic search across projects, tasks, agents, and knowledge bases

[johnxie]

Summary

Add MCP tools for searching across the entire Taskade workspace — projects, tasks, agent knowledge, media, and conversations.

Proposed Tools

• searchProjects — Search projects by name, content, or tags
• searchTasks — Search tasks across all projects
• searchAgents — Find agents by name, role, or knowledge content
• searchMedia — Search uploaded files and documents

Use Cases

• "Find all tasks related to the product launch across all projects"
• "Which agent has knowledge about our API documentation?"
• "Show me all projects created this week"
• "Search for any media files containing the Q4 report"

Context

Taskade workspaces contain projects, tasks, agents, knowledge bases, and media. Enabling search via MCP lets AI assistants find and reference content across the entire workspace.

Related: Taskade at https://www.taskade.com