Harden UME/LLDP link ports and canvas styles around UME authority.

Resolve ports from EQ+PTP first, enrich from LLDP when compatible, miss only on valid LLDP evidence, and paint UME solid blue / LLDP dashed / missing red. Also localize new root maps as Root map in English.

Co-authored-by: Cursor <cursoragent@cursor.com>

web/src/types.ts

@@ -546,6 +546,8 @@ export type TopologyViewEdgeItem = {
   stroke_width?: number;
   line_style?: string;
   discovered_at?: string | null;
+  /** UME userLabel when no EQ+PTP ports. */
+  display_label?: string;
 };
 
 export type TopologyOutsidePeer = {