files-overlay.js is loaded from overlay_detail.html:285 (with defer),
not base.html — the JS activates only when .files-manager exists,
which is only on overlay detail for files-type overlays. Loading from
base.html would pull it onto every page. The plan's first draft had
this wrong in four places (step 1, step 4, step 10, critical files
table). Following the plan verbatim would have moved the script tag
to the wrong template — exactly the failure mode that
feedback_validate_before_implementing memory warns about.
Added an Errata section at the bottom of the plan documenting this.
Also clarified that all new module script tags should use defer to
match the existing pattern (the modules query the DOM at load and
need the body parsed first).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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