v1.8.0: Full diagnostic sweep - 20 bugs fixed

Critical fixes:
- extractPages.helper.js: Pagination URL bug (?page → &page)
- package.json: Fixed invalid dep versions (axios, dotenv, express)
- privacy.html + tos.html: Broken footer links (//tos → /tos)
- manifest.json: Invalid icon purpose (any maskable → maskable)

High fixes:
- server.js: Removed duplicate CORS middleware (triple → single)
- search.controller.js: Cache key collision with suggestion controller
- apiRoutes.js: Dynamic endpoint count (was hardcoded 27)
- vercel.json: Removed duplicate CORS header

Medium fixes:
- header.config.js: Updated User-Agent to Chrome 130
- dataUrl.js: Removed redundant domain from ALT_DOMAINS
- category.extractor.js: Removed unused cheerio import
- server.js: Added __dirname, removed unused cors import

Documentation:
- CHANGELOG.md: Added v1.8.0 entry
- README.md: Updated version badges (1.8.0, Express 4.21)
- test.js: Fixed status endpoint (currently-airing → airing)

src/routes/apiRoutes.js

@@ -361,7 +361,7 @@ app.get("/api/health", (req, res) => {
     success: true,
     results: {
       status: "healthy",
-      version: "1.7.3",
+      version: "1.8.0",
       uptime: `${hours}h ${minutes}m ${seconds}s`,
       uptimeSeconds: uptime,
       timestamp: new Date().toISOString(),
@@ -394,7 +394,7 @@ app.get("/api/stats", (req, res) => {
         ttl: "5 minutes",
         description: "Map-based cache with TTL expiration",
       },
-      endpoints: 27,
+      endpoints: 30,
       timestamp: new Date().toISOString(),
     },
   });
@@ -407,7 +407,7 @@ app.get("/api/openapi", (req, res) => {
     info: {
       title: "AniKotoAPI",
       description: "Free REST API for anime data from anikototv.to",
-      version: "1.7.3",
+      version: "1.8.0",
       contact: {
         name: "Shinei Nouzen",
         url: "https://github.com/Shineii86/AniKotoAPI",