feat: v0.4 resilience release

[daocoding]

This PR introduces the v0.4 resilience release for .

It migrates all highly optimized sandbox resilience features used internally within the Apex substrate to the public repository, completely generalizing them for open-source compatibility.

Changes Included:

1. Apex Configuration Scrubbing:
   • Replaced all three hardcoded Tailscale URLs with a robust environment variable fallback chain: -> unprefixed -> defaults.
   • Updated the default fallback from 'Godel' to 'AgyBridge'.
2. Resilience Feature Composition:
   • Dynamic Session Discovery (DSD): Dynamic lock and synchronization on CLI restarts by scanning brain directories.
   • State Catch-up on Boot: Re-pulls last 25 messages from active rooms.
   • Advanced Wake Filtering: Injects JSON-based smart wake filtering ().
   • Direct MCP Fallback: Sidecar Rest fallback for stalled ConnectRPC cascades.
   • Autoregistered Sidecar Subscriptions: Programmatic subscription endpoints on startup.
3. Version Bump & Docs:
   • Bumped version in to .
   • Updated the section of the to reflect the v0.4 integration state and add environment-resolution caveats for external users.