release: CodeBear v1.6.0

[Eco1i]

Summary

• add light/dark themes and Chinese/English interface preferences
• update workspace components, dialogs, relationship views, DDL, backup, AI, and update UI for both themes and languages
• add logical-row smooth wheel scrolling across native scroll regions and browser zoom levels
• improve sidebar resizing, draggable dialogs, table states, and repeated desktop launch behavior
• prepare v1.6.0 version metadata, changelog, bilingual README content, screenshots, and release notes

Validation

• python -X utf8 packaging/versioning.py --check
• backend pytest: 110 passed
• pip-audit -r backend/requirements.txt: no known vulnerabilities
• frontend Vitest: 77 passed
• npm audit --audit-level=high: 0 vulnerabilities
• frontend TypeScript and production build passed
• Chromium E2E: 12 passed, 2 conditional zoom suites skipped
• Chromium zoom acceptance passed at 25%, 33%, 50%, 67%, 75%, 80%, 90%, 100%, 110%, 125%, 150%, 175%, 200%, 250%, 300%, 400%, and 500%
• Windows x64 ZIP build and extracted-launch acceptance passed

Release

• version: 1.6.0
• tag after merge: v1.6.0
• release workflow must produce Windows x64 ZIP, macOS arm64 DMG, and both SHA-256 files