Fix catenary layer toggles, tooltip collision, side rail rendering, and typed interruption signs

README.md

@@ -25,9 +25,9 @@ Interactive vector web map of Derail Valley railway network with DC electrificat
   - `Wire Type`: Color-coded by physical suspension category.
 - **Markers & Tooltips**:
   - Traction Substations: `⚡` badge with nominal voltage, supply voltage, max load (kW), and regenerative inverter presence.
-  - Neutral Sections: `⛔` badge with section ID, length, connecting substations, and disconnect traction warning.
-  - Interruption Signs: `⤓` diamond badge for pantograph drop/raise warnings.
-  - Contact Wires: Nearest-point hovering displaying voltage, substation feed, category, and segment length.
+  - Neutral Sections: `⛔ 0V` center badge with section ID, length, connecting substations, disconnect traction warning, and entrance/exit boundary signs (`NeutralBegin`, `NeutralEnd`, `NeutralWarning`) on high zoom.
+  - Interruption Signs: Typed diamond badges distinguishing Drop Pantographs (`⤓`), Advance Warning (`⚠`), and Raise Pantographs (`⤒`).
+  - Integrated Tooltips: Hovering over electrified track curves provides unified telemetry displaying both track geometry (grade, curve radius, speed limit, altitude) and catenary network specs (voltage, suspension type, feeding substation, section length).
 
 ## CommunityMapLocation Mod Integration