VeyraKey v0.10.0 Release Candidate

VeyraKey v0.10.0 is an extension-first release candidate for developer installation.\n\nDownloads\n- Chrome MV3 package for Chrome, Edge, Brave, and Chromium browsers\n- Firefox MV3 package for temporary developer installation\n- Reviewable source archive\n- Release manifest with artifact checksums and automated-gate evidence\n- CycloneDX SBOM\n\nVerified locally\n- 38 test files and 259 tests\n- 13 workspace package typechecks\n- Chrome MV3, Firefox MV3, and web builds\n- Permission, CSP, source-map, secret, size, version, SBOM, and packaging gates\n\nThis is not a browser-store-signed build. Chrome Web Store review, Firefox signing, physical biometric validation, OAuth production approval, and independent security/accessibility review remain external release gates. Do not use this prerelease for irreplaceable secrets.