test: intentionally broken locksound submission [NAT-132]

[tallnato]

Summary

• Adds a test locksound entry (content/_locksounds/test-broken-locksound/) with 4 intentional validation errors to verify the CI validation pipeline catches them
• Wrong audio format (.mp3 instead of required .wav)
• Missing files field in frontmatter
• Oversized .wav file (1.1 MB, limit is 1 MB)
• Missing audio field in frontmatter

Expected CI Behavior

Both validate-pr.yml and validate-locksounds.yml should fail with these errors:

locksounds/test-broken-locksound/broken-sound.mp3: invalid file type ".mp3" (allowed: .wav)
locksounds/test-broken-locksound/oversized-sound.wav: file too large (1.1 MB, max 1 MB)
locksounds/test-broken-locksound.md: missing required field "files"
locksounds/test-broken-locksound.md: missing required field "audio"

Test plan

• Local validation confirms all 4 errors detected
• CI Validate PR workflow fails
• CI Validate Locksounds 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	Notes
Validate PR (validate-pr.yml)	❌ Failed	Caught all 4 errors
Validate Locksounds (validate-locksounds.yml)	❌ Failed	Caught all 4 errors
Semantic PR	✅ Passed
Label	✅ Passed
Single Component Check	✅ Passed

Validation errors detected:

1. locksounds/test-broken-locksound/broken-sound.mp3: invalid file type ".mp3" (allowed: .wav)
2. locksounds/test-broken-locksound/oversized-sound.wav: file too large (1.1 MB, max 1 MB)
3. locksounds/test-broken-locksound.md: missing required field "files"
4. locksounds/test-broken-locksound.md: missing required field "audio"

Conclusion: The validation pipeline correctly catches all 4 intentional errors in this locksound submission.

[tallnato]

Review: Approve ✅

This test PR achieves exactly what it set out to do — submit intentionally broken locksound content and verify the CI validation pipeline catches all errors.

Correctness

All 4 intentional errors are present and accounted for:

#	Error	Verified in CI
1	Wrong audio format (.mp3 instead of .wav)	✅ invalid file type ".mp3" (allowed: .wav)
2	Missing files field in frontmatter	✅ missing required field "files"
3	Oversized .wav file (1.1 MB > 1 MB limit)	✅ file too large (1.1 MB, max 1 MB)
4	Missing audio field in frontmatter	✅ missing required field "audio"

CI Results

• Validate PR (validate-pr.yml): Failed as expected — 4 errors across 24 items / 5 categories
• Validate Locksounds Content (validate-locksounds.yml): Failed as expected — 4 errors across 7 items / 1 category
• Label PRs: Passed (labels applied correctly)
• Validate Single Component: Passed (expected — this checks structure, not content validity)
• Semantic PR: Passed (commit message format is correct)

Security

No secrets, credentials, or sensitive data in the diff. Binary files are test fixtures only.

Notes

• The frontmatter markdown file is clean and clearly documents the intentional errors
• PR description is thorough with expected error output
• This PR should not be merged — it's a validation test. Consider closing it after CI results are documented, or marking it as a draft.

LGTM for its stated purpose. Reviewed by @Revinaldo (PR Engineer).