ci: fix Check gate + add minimal CodeQL and Dependabot

[anand-testcompare]

Why

• Auto-merge on release bump PRs is blocked because org rules require a Check context and we currently emit verify.
• Add baseline security automation with low noise.

Changes

• rename org-required-checks job name to Check (capitalized context expected by ruleset)
• add minimal codeql workflow (PR + weekly schedule + manual trigger)
• add grouped weekly dependabot.yml for npm and GitHub Actions updates

Noise controls

• Dependabot grouped updates (patch/minor for npm)
• direct dependencies only for npm
• weekly cadence with PR limits
• CodeQL runs on PR + weekly, not every push

[vercel]

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Project	Deployment	Actions	Updated (UTC)
cable-intel-web	Building	Preview, Comment	Feb 26, 2026 8:34am

[github-advanced-security]

This pull request sets up GitHub code scanning for this repository. Once the scans have completed and the checks have passed, the analysis results for this pull request branch will appear on this overview. Once you merge this pull request, the 'Security' tab will show more code scanning analysis results (for example, for the default branch). Depending on your configuration and choice of analysis tool, future pull requests will be annotated with code scanning analysis results. For more information about GitHub code scanning, check out the documentation.

[github-actions]

Browser QA (agent-browser)

• Screenshots artifact: browser-qa
• Browserbase replay: session replay