feat: add 5 agent checks derived from codebase history

[TyDunn]

Summary

Adds 5 new Agent Checks to .continue/agents/ targeting the highest-impact areas identified by analyzing recent PRs, open issues, and contribution patterns in this repo:

Check	Problem It Addresses	Evidence
Error Message Quality	Catch blocks that swallow error details, producing "Unknown error" messages	12 of 15 open issues are auth/integration errors with no actionable info
Breaking Change Detector	CLI renames, API changes, and URL updates that leave stale references	6 PRs in 8 days fixing the same cn check → cn review → cn checks rename
Dependency Security Review	Automated dependency bumps merged with minimal review	25% of merged PRs are bot dependency bumps (Dependabot/Snyk)
Input Validation	User inputs (API keys, config values) causing downstream failures	3 recent PRs patching validation gaps for blank inputs and malformed keys
Test Coverage	New functionality shipped without corresponding tests	Contributing guide requires tests but coverage gaps slip through

These checks complement the existing agents (anti-slop, security-audit, setup-scripts, update-agents-md, update-continue-docs, react-best-practices) and will be auto-discovered by the continue-agents.yml workflow.

Test plan

• Verify each agent file has valid YAML frontmatter (name and description fields)
• Run cn checks locally to confirm the new agents are discovered
• Open a test PR that triggers each check scenario to validate behavior
• Confirm existing agents still function alongside the new ones

🤖 Generated with Claude Code

---

Summary by cubic

Adds five review agents under .continue/agents to flag breaking changes, weak error handling, risky dependency updates, missing validation, and missing tests. Includes Prettier formatting of the agent files; no functional changes.

• New Features
  • Error Message Quality: flags swallowed errors and generic messages.
  • Breaking Change Detector: catches CLI/API/config renames with stale references.
  • Dependency Security Review: reviews dependency changes for security and breakage.
  • Input Validation: ensures API keys, config, and user inputs are validated with clear errors.
  • Test Coverage: checks that new functionality includes tests and regression coverage.

^{Written for commit cd54c53. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 5 files