v0.2.9: MCP inventory & per-project policy

TL;DR

• MCP inventory — agentjail mcp inventory scans configs, npm, pip, and Docker for a full MCP surface map.
• Per-project policy — policy resolution now cascades from global to per-project overrides.
• Skill & tool policy — per-skill allow/block/ask and per-tool policy CLI with session log discovery.

Added

• agentjail mcp inventory — full MCP inventory from agent configs, npm packages, pip packages, and Docker containers with security audit per server
• Per-project policy resolution with global-to-project cascade and reverse MCP index
• Project selector UI with per-project policy view and override management
• Per-skill policy (agentjail skill allow/block/ask) with discovered_skills table
• Per-tool policy CLI with session log discovery and remote MCP connectors
• discovered_tools and discovered_skills SQLite tables