feat: expand station cards with detailed information and add live statistics endpoint

- Add `/stats/live` endpoint returning station count and latest price timestamp with 5-minute cache
- Transform StationCard into expandable component with click/keyboard interaction showing full details
- Display brand label, badges (24h/Supermarket/Motorway), fuel types, amenities, opening hours, and price delta vs average
- Add brand filter dropdown to StationList with dynamic brand extraction from results
- Calculate and display price comparison against filtered stations average
- Redesign map markers to simpler price display; move directions link to popup alongside station details
- Add "locate-me" button to SearchBar for geolocation trigger
- Show "Live" indicator with station count and last-update time on homepage hero
- Remove standalone directions link from marker HTML; consolidate in popup with click propagation handling
- Persist `avgPence` calculation across StationList and pass to cards for delta display
- Add `@iconify-json/lucide` dev dependency and register collection on app mount
- Stop click propagation on card action buttons (directions, remove)

package-lock.json

@@ -18,6 +18,9 @@
                 "vue": "^3.5.32",
                 "vue-router": "^4.6.4"
             },
+            "devDependencies": {
+                "@iconify-json/lucide": "^1.2.102"
+            },
             "optionalDependencies": {
                 "@rollup/rollup-linux-x64-gnu": "4.9.5",
                 "@tailwindcss/oxide-linux-x64-gnu": "^4.0.1",
@@ -101,6 +104,16 @@
                 "tslib": "^2.4.0"
             }
         },
+        "node_modules/@iconify-json/lucide": {
+            "version": "1.2.102",
+            "resolved": "https://registry.npmjs.org/@iconify-json/lucide/-/lucide-1.2.102.tgz",
+            "integrity": "sha512-Dm3EEqu5NrmzyDMB2U1+8yroEj2/dB9V4KlH0m/szwwF/ofSf0cPaGTZqkd1aExXjCor+vU53ttRMCGuXf+/cg==",
+            "dev": true,
+            "license": "ISC",
+            "dependencies": {
+                "@iconify/types": "*"
+            }
+        },
         "node_modules/@iconify/types": {
             "version": "2.0.0",
             "resolved": "https://registry.npmjs.org/@iconify/types/-/types-2.0.0.tgz",