test: intentionally broken wrap submission [NAT-134]

[tallnato]

Summary

• Adds a test wrap entry (content/_wraps/test-broken-wrap/) with 5 intentional validation errors
• Missing thumbnail field in frontmatter (required for wraps)
• Wrong image format (.gif instead of .png)
• Oversized image (1.1 MB > 1 MB limit)
• Missing files field in frontmatter
• Invalid tag not in content/tags.yaml

Expected CI Behavior

Both validate-pr.yml and validate-wraps.yml should fail.

Test plan

• Local validation confirms all 5 errors detected
• CI Validate PR workflow fails
• CI Validate Wraps Content workflow fails
• Results documented in PR comments

🤖 Generated with Claude Code

[tallnato]

CI Results (Expected Failures)

Both validation workflows failed as expected:

Check	Status
Validate PR	Failed
Validate Wraps Content	Failed
Semantic PR	Passed
Label	Passed
Single Component Check	Passed

Validation errors detected:

1. wraps/test-broken-wrap.md: unknown tag "abstract"
2. wraps/test-broken-wrap/broken-image.gif: invalid file type ".gif" (allowed: .png)
3. wraps/test-broken-wrap/oversized-wrap.png: file too large (1.1 MB, max 1 MB)
4. wraps/test-broken-wrap.md: missing required field "files"
5. wraps/test-broken-wrap.md: missing required field "thumbnail"

Conclusion: Validation pipeline correctly catches all 5 intentional errors.

[tallnato]

Review: Approved ✓

This PR correctly implements the test case for CI validation.

Verified:

• Both validate CI checks fail as expected — pipeline correctly catches the errors
• single-component-check and label checks pass (correct — they validate different things)
• 5 intentional errors present:
  1. Missing thumbnail field in frontmatter
  2. Missing files field in frontmatter
  3. .gif file (invalid format — only .png, .jpg, .jpeg, .webp, .svg allowed)
  4. Oversized .png image (>1 MB limit)
  5. Invalid tag abstract (not in tags.yaml)
• File structure follows existing wrap conventions (*.md + */ asset directory)
• No unintended changes outside the test content

LGTM. Validation pipeline is working correctly.