Add Dependabot, CODEOWNERS and PR template

[JustinaPetr]

What does this change?

Adds the standard repo-maintenance files ahead of making the repo public:

• .github/dependabot.yml: weekly update PRs for the app-client-starter-app npm packages (minor and patch updates grouped into one PR) and for the GitHub Actions versions used in workflows.
• .github/CODEOWNERS: requests a review from @JustinaPetr on every PR.
• .github/pull_request_template.md: a short description section and checklist for contributors.

How was it tested?

Checked that dependabot.yml is valid YAML. Dependabot and CODEOWNERS start working once this is merged to main.

Checklist

• No secrets, tokens or .env files are committed
• No app code changed

🤖 Generated with Claude Code

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Essentials

Run ID: 0045241f-d79d-4ea7-a6c6-3bb2312450a1

📥 Commits

Reviewing files that changed from the base of the PR and between f0c42a8 and 0a2920c.

📒 Files selected for processing (3)

• .github/CODEOWNERS
• .github/dependabot.yml
• .github/pull_request_template.md

Included review availability: 4 reviews are currently available. Your included PR review attempts over the past 7 days set your current allowance at 5 reviews per hour.

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📝 Summary

Summary by CodeRabbit

• Chores
  • Added scheduled checks for dependency updates.
  • Standardized pull request submissions with prompts and review checklists.
  • No changes to app features or behavior.

Walkthrough

The changes add a catch-all CODEOWNERS rule for reviewer assignment, weekly Dependabot updates for npm dependencies and GitHub Actions, and a pull request template with description and testing prompts plus a checklist.

Priority: ⬇️ Low

Merge Risk: ⚪ Minimal · up to 0a292

The repository-maintenance setup is suitable to merge; no concrete blocking issue was identified.

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely identifies all three repository-maintenance changes: Dependabot, CODEOWNERS, and the pull request template.
Description check	✅ Passed	The description accurately explains the repository-maintenance files added, their purpose, testing performed, and checklist status.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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