v0.20.0 - Clean-Room Adoption Proof

v0.20.0 - Clean-Room Adoption Proof

Agent Memory Bridge 0.20.0 is a clean-room proof release over the v0.19
proof-breadth work.

0.20.0 = clean-room adoption before product expansion.

What Changed

• Added a fixed 6-case v0.20 clean-room proof pack:
  • local entrypoint/import sanity
  • real stdio MCP tool-surface check
  • tokened store -> recall over MCP stdio
  • first-run CLI rendering
  • Task Brief CLI rendering
  • isolated temp-store write-scope guard
• Added an executable runner:
  • python scripts/run_v020_clean_room_proof.py
• Added generated snapshots:
  • benchmark/latest-v0.20-clean-room-proof-report.json
  • benchmark/latest-v0.20-clean-room-proof-transcript.md
• Added release-contract facts for the v0.20 denominator and pass rates.
• Kept the public MCP surface unchanged at 10 tools.

Validation

• pytest: 336 passed
• release contract: passed
• public MCP surface: unchanged at 10 tools
• v0.20 clean-room proof pack: 6 / 6 cases passed

Boundaries

The v0.20 clean-room proof is local reproducible evidence. It is not external
vendor certification.

This release is still not:

• a new MCP tool
• an AMH runtime dependency
• a client config writer
• a plugin package for every client
• a scheduler, watcher, worker, daemon, or runtime loop
• an automatic promotion, deletion, merge, approval, or writeback path

Public MCP Surface

The public MCP surface remains unchanged:

• store
• recall
• browse
• stats
• forget
• promote
• export
• claim_signal
• extend_signal_lease
• ack_signal