v2.3.1

What's Changed

• chore: port main-only files to develop and clean up code quality by @rygel in #330
• fix(providers): remove AnthropicProvider stub by @rygel in #332
• refactor(providers): add shared helpers to ProviderBase by @rygel in #333
• ci: update GitHub Actions to latest major versions by @rygel in #334
• ci: add Dependabot config targeting develop branch by @rygel in #335
• fix: surface auth-missing state instead of serving stale cached data by @rygel in #336
• fix: surface all silent-drop patterns so UI never shows stale data by @rygel in #337
• fix: handle Codex API schema change and add stale data detection by @rygel in #338
• chore(release): prepare 2.3.1-beta.2 by @rygel in #339
• feat: automatically compact provider_history to cap database growth by @rygel in #340
• chore(release): prepare 2.3.1-beta.3 by @rygel in #341
• fix: LastHistoryRow Int64 mismatch crashes dedup gate on every refresh by @rygel in #342
• test: add DB read-path, pipeline, stale-detection, and circuit-breaker integration tests by @rygel in #343
• chore(release): prepare 2.3.1-beta.4 by @rygel in #344
• fix: log monitor version on startup by @rygel in #345
• chore(release): prepare 2.3.1 by @rygel in #346

Full Changelog: v2.3.0...v2.3.1