chore: add CODEOWNERS to repositories missing it

[jflowers]

Context

The governance scan (2026-08-21) found CODEOWNERS present in only 3 of 10 repositories.

Current state:

• Have CODEOWNERS: .github, unbound-force, replicator
• Missing CODEOWNERS: gaze, dewey, website, homebrew-tap, containerfile, intake-kit

Action

Add a .github/CODEOWNERS file to each repo that is missing one. Suggested pattern:

# Default owners for everything
* @unbound-force/overlords

# CI/CD workflows and GitHub configuration
.github/ @unbound-force/overlords

Acceptance Criteria

• CODEOWNERS present in gaze
• CODEOWNERS present in dewey
• CODEOWNERS present in website
• CODEOWNERS present in homebrew-tap
• CODEOWNERS present in containerfile
• CODEOWNERS present in intake-kit
• All CODEOWNERS files cover .github/ directory