v1.0.1

No user-facing changes.

• Added Firefox extension test suite (WDIO v9)
• Added Firefox and Chrome tests to CI
• Added Dependabot for npm dependency updates
• Updated dependencies (@playwright/test, dotenv)
• Added Chrome Web Store privacy declarations
• Refactored manifests into base + browser overrides
• Hardened Firefox CI tests for runner variability
• Added release skill and CI release workflow
• Added web store publish workflow and tooling

Full Changelog: v1.0.0-rc5...v1.0.1