Add visible versioning to 20nm compare page

AGENTS.md

@@ -52,6 +52,9 @@ Rules:
 - do not create additional comparison pages unless explicitly requested
 - prefer improving the current 20nm compare page over replacing it
 - keep the click-pick inspection panel working on both left and right maps
+- every visible compare-page revision must bump a human-readable version string on the page itself
+- show that version near the reload button so visual review can confirm refresh state
+- use the same version string as a cache-busting base for style / tile reloads
 
 ## Working Rules
 
@@ -98,6 +101,15 @@ Key references:
 - [`NavSea_Delivery_Preflight_Audit_Spec.md`](/root/sourceserver/pbf/NavSea_Delivery_Preflight_Audit_Spec.md)
 - [`STEP_RECORD.md`](/root/sourceserver/pbf/STEP_RECORD.md)
 
+### 5. Make Visual Revisions Traceable
+
+When changing the primary compare page:
+
+- bump the compare page version string
+- display it near the reload button
+- redeploy the HTML to `/mnt/sda1/www/newpec/navsea-compare-karatsu-20nm.html`
+- if the visual change depends on style updates, redeploy the corresponding style JSON too
+
 ## Resume Checklist
 
 At the start of a session: