[plan] Fix SC2086 shellcheck error in prompt-clustering-analysis workflow

[github-actions]

Objective

Fix a shellcheck error (SC2086 — unquoted variable) in the prompt-clustering-analysis workflow, identified by actionlint in discussion #19004.

Context

The prompt-clustering-analysis.lock.yml workflow has an unquoted variable expansion at line 372. SC2086 indicates a variable used without double quotes, which causes word-splitting or glob expansion bugs when the variable contains spaces or special characters.

Source: Static Analysis Report - 2026-03-01, actionlint SC2086 finding.

Approach

1. Open .github/workflows/prompt-clustering-analysis.md (source markdown file — do NOT edit the lock file directly)
2. Find the shell script step around the redirect path that uses an unquoted variable (e.g., $VARIABLE instead of "$VARIABLE")
3. Quote the variable: change $VAR → "$VAR" for the redirect path variable
4. Run make recompile to regenerate the lock file
5. Run make lint or actionlint to confirm the error is resolved

Files to Modify

• .github/workflows/prompt-clustering-analysis.md — quote the unquoted shell variable
• .github/workflows/prompt-clustering-analysis.lock.yml — regenerated via make recompile

Acceptance Criteria

• SC2086 error is gone from prompt-clustering-analysis
• Lock file regenerated without errors
• make agent-finish passes

Generated by Plan Command for issue #discussion #19004

• expires on Mar 3, 2026, 6:38 AM UTC