style: fix formatting issues across 27 plugin files

[dkmcintyre]

Summary

• Fix missing newlines at end of file (23 files)
• Fix trailing whitespace (5 files)

Pre-commit hooks (end-of-file-fixer and trailing-whitespace) now pass for all files.

Test plan

• pre-commit run --all-files passes (except shellcheck which requires system install)
• No functional changes - formatting only

🤖 Generated with Claude Code

[CLAassistant]

All committers have signed the CLA.

[dguido]

Review Summary

Five-source review: pr-review-toolkit (code-reviewer, silent-failure-hunter, pr-test-analyzer) + OpenAI Codex + Google Gemini.

Findings

All 5 review sources confirmed: no issues found. Every change is mechanical whitespace normalization (EOF newlines, trailing whitespace, trailing blank lines). No content was altered.

#	Severity	Finding	Resolution
1	P4	PR has merge conflicts against main	Informational: needs rebase before merge
2	P4	end-of-file-fixer and trailing-whitespace only run in pre-commit, not CI — drift will recur	Informational: consider adding to CI validate.yml
3	P4	PR description says "23 files" for EOF fixes — actual breakdown is 15 missing-EOF-newline + 11 trailing-blank-line + 5 trailing-whitespace (the hook conflates the first two)	Informational: minor description inaccuracy

Verification

• JSON: plugin.json validates cleanly (python3 -m json.tool)
• SKILL.md frontmatter: All 46 SKILL.md files have valid name and description
• Marketplace consistency: All 17 plugins validated
• Hardcoded paths: None found
• EOF newlines: All 27 changed files end with exactly one newline (verified with xxd)

No fixes needed

All findings are P4 (informational). No code changes required.

---

Reviewed with Claude Code, OpenAI Codex, and Google Gemini

[dguido]

Rebased this branch onto latest main to resolve merge conflicts. 11 of the 27 files were already fixed on main, so the rebased diff covers 16 files.

Since I can't push to the fork, I've pushed the rebased branch to origin/fix/formatting-cleanup and will open a replacement PR. Closing this one — thank you @dkmcintyre for the contribution!