Release 0.4.0

What's Changed

• [codex] Migrate package builds to Rslib by @GRAMMAC1 in #10
• Add MCP benchmark workflow by @GRAMMAC1 in #11
• Update README docs and remove unused samples by @GRAMMAC1 in #13
• feat(benchmark): add accuracy benchmark by @GRAMMAC1 in #14
• Fix negative compression for short MCP benchmark logs by @GRAMMAC1 in #16
• Report compression as benchmark observation by @GRAMMAC1 in #17
• Report benchmark signal matches as observations by @GRAMMAC1 in #18
• Scope MCP tool prompts to frontend diagnosis by @GRAMMAC1 in #19
• feat: harness verify by @GRAMMAC1 in #20
• Add MCP harness regression guard by @GRAMMAC1 in #21
• Remove unused eval fixtures by @GRAMMAC1 in #22
• Add npm publish Codex skill by @GRAMMAC1 in #23

Full Changelog: v0.3.0...v0.4.0

Release v0.3.0

0.3.0

Minor Changes

• Improve the MCP diagnosis workflow for token-efficient agent usage.

  MCP now exposes compact failure briefs, focused evidence queries, and cached
  runtime context lookup based on client-provided command output. It also removes
  the legacy diagnosis-input tool and improves evidence ranking to prioritize
  high-value diagnostics over noisy log prefixes.

  CLI docs were refreshed to clarify the post-failure shell-hook workflow and the
  package boundary between CLI, core, and MCP.