feat: add Python plugin system, multi-agent connect CLI, and MCP tool expansions

docs: rewrite all MD files for Python project + fix graph node colors

feat: rewrite graph tab to show project folders as nodes

feat: add folder filter dropdown to memories tab

fix: resolve semantic and procedural memory dashboard display issue

refactor: filter sessions by full project folder paths and support Uncategorized category

feat: rename sessions using agent summary title, display narrative summary, and add folder-wise filter to sessions tab

fix: auto-inject AGENTMEMORY_SECRET into viewer so dashboard authenticates without manual token entry

Initialize Hugging Face Space deployment for AgentMemory Python (clean without assets)