release: 4.22.0 - #570

Summary

Release 4.22.0. It ships the five fixes merged since v4.21.0 and the four dependency bumps. The CHANGELOG section has the details and the measurements.

• [bug] recall MCP tool does not expose tags_any, tags_all, include_low_signal, cross_domain, sa_mode #559 (PR fix: expose 13 handler-declared params dropped by hand-written MCP wrappers (#559) #567): every handler parameter is reachable over MCP. 13 tools had drifted. A parity test now covers every tool of a server built with every upstream gate open.
• [bug] remember never propagates decisions to is_global, so Team Decisions stays empty (ADR-0200) #561 (PR fix(remember): propagate decisions written under an agent context to team scope (#561) #565): decisions written under an agent context reach Team Decisions, for deliberate writes from a trusted origin. A one-shot backfill covers rows stored before the fix.
• [audit] 17 core/ modules import os or pathlib (core must be zero-I/O) #560 (PRs fix(core): remove pathlib from abstention_gate and codebase_graph (#560, 1/3) #564, fix(core): remove os/pathlib from wiki_coverage cluster (#560, 3/3) #569, fix(core): remove os/pathlib from ablation.py and 8 retrieval env-flag modules (#560, 2/3) #568): core/ performs no I/O. Every seam raises when unwired, and one function, mcp_server.hooks.wiring.wire_composition_root(), wires them all at every entry point.
• [docs] recall documented as 6-signal WRRF; PG path is a weighted sum of 5 SQL signals #562 and [docs] docs/module-inventory.md per-layer file counts are stale #563 (PR docs: describe recall's real fusion; stop storing layer file counts (#562, #563) #566): the recall fusion documentation and the module inventory match the code.

Every version surface moves to 4.22.0. Once merged, the squash commit is tagged v4.22.0, and release.yml publishes to PyPI and the MCP Registry.

Verification

• python3 scripts/check_version_surfaces.py: 17 sites checked, all agree with pyproject.toml.
• uv lock: hypermnesia-mcp 4.21.0 → 4.22.0, no other change.
• python scripts/generate_repo_badges.py --check: badges OK.
• python scripts/check_doc_claims.py: OK. Craftsmanship gate with --base origin/main: OK. pytest tests_py/scripts: 970 passed.
• python scripts/check_marketplace_pins.py reports PIN_VERSION_UNPUBLISHED for 4.22.0 until the v4.22.0 tag exists. That is the expected state before the post-merge tag, the same as for 4.21.0.
• No-regression benchmark for the retrieval-path change (fix(core): remove os/pathlib from ablation.py and 8 retrieval env-flag modules (#560, 2/3) #568, on b847b7c against 872855f): LongMemEval-S R@10 +0.0000, MRR +0.0005; LoCoMo R@10 −0.0005, MRR −0.0014. The check passes.

🤖 Generated with Claude Code

https://claude.ai/code/session_016CwRqZLmNxZ6LatpmKrKvH