chore(main): release 0.2.6

[github-actions]

🤖 I have created a release beep boop

0.2.6 (2026-05-31)

Added

• connectors/google_calendar: events api sync token + master event mapper + override + cursor + fallback (Phase 14 G4) (#301) (a4cefab)
• connectors/google_mail: gmail api history + message mapper + cursor + fallback (#303) (3c621c1)

Changed

• connectors/google_auth: shared OAuth foundation + 3-scope expansion (Phase 14 G2) (#300) (bd74191)

Documentation

• adr,plan: adr-0010 + 0014 amendments + phase-14-plan (Gmail + Google Calendar) (#298) (f5d43c8)
• phase 14 audit cluster B2 (Phase 14+ → 15+ unification + anchor links + outlook + mapper symmetry counts) (#312) (02667d7), closes #307
• phase 14 audit cluster C (operator-facing docs vs code drift) (#310) (bfefa82)
• phase 14 closeout (docs + e2e + status lines + phase-13 forecast realign) (#304) (ab0b792)
• skills: phase 14 audit cluster B1 (SKILL.md vocabulary 反映漏れ修正) (#311) (16504fc)

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[github-actions]

🤖 Created releases:

• v0.2.6

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