🧹 Fix misleading inline documentation comment in migrate_syntax.py

[Tcode-Motion]

🎯 What: Rephrased the inline comment in migrate_syntax.py that looked like an actionable TODO item.
💡 Why: The comment # ── std.xxx.yyy() calls → module.yyy() ───────────────────────────────── was being incorrectly interpreted as a pending task (e.g., "Fix .yyy() calls -> module.yyy()"), when it was actually just documenting the regex pattern below it.
✅ Verification: Ran python3 -m py_compile scripts/migrate_syntax.py and cargo test --workspace to ensure no syntax errors or regressions were introduced.
✨ Result: The comment is now a clear, descriptive header: # ── std.xxx → module ─────────────────────────────────────────, preventing automated trackers or developers from misinterpreting it.

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PR created automatically by Jules for task 635104281233305802 started by @Tcode-Motion

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