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+/*
+ * ======= • ======= • ======= • ======= • =======• =======
+ * MiruroAPI — worker.js (Cloudflare Worker Edition)
+ * Repository: https://github.com/Shineii86/MiruroAPI
+ *
+ * @description
+ *   Cloudflare Worker version of MiruroAPI. Runs entirely on
+ *   Cloudflare's edge network — pipe requests bypass bot detection
+ *   automatically since they route through Cloudflare's internal network.
+ *
+ *   Key advantages over Vercel deployment:
+ *   - Pipe requests NOT blocked by Cloudflare (edge → edge)
+ *   - Zero cold starts (V8 isolates)
+ *   - Free tier: 100K requests/day
+ *   - No npm dependencies required (native fetch + DecompressionStream)
+ *
+ * @endpoints
+ *   System:    /api/health
+ *   Search:    /api/search, /api/suggestions, /api/filter
+ *   Collections: /api/trending, /api/popular, /api/top, /api/random
+ *   Details:   /api/info/:id, /api/anime/:id/characters, /api/anime/:id/relations
+ *   Streaming: /api/episodes/:id, /api/watch/:provider/:anilistId/:category/:slug
+ *   Metadata:  /api/genres
+ *
+ * @author  Shinei Nouzen
+ * @license MIT
+ * ======= • ======= • ======= • ======= • =======• =======
+ */
+
+// ══════════════════════════════════════════════════════════════
+// CONFIGURATION
+// ══════════════════════════════════════════════════════════════
+
+/**
+ * AniList GraphQL endpoint.
+ * All metadata (search, trending, info, characters) comes from here.
+ *
+ * @type {string}
+ */
+const ANILIST_URL = "https://graphql.anilist.co";
+
+/**
+ * Miruro pipe origins, ordered by reliability.
+ * The worker tries each mirror in sequence until one succeeds.
+ * Running on Cloudflare edge means these requests go through
+ * Cloudflare's internal network — no bot detection triggered.
+ *
+ * @type {string[]}
+ */
+const MIRURO_ORIGINS = [
+  "https://www.miruro.to",
+  "https://www.miruro.ru",
+  "https://www.miruro.bz",
+  "https://www.miruro.tv",
+];
+
+/**
+ * Canonical Miruro origin for referer/origin headers.
+ *
+ * @type {string}
+ */
+const CANONICAL_ORIGIN = "https://www.miruro.to";
+
+/**
+ * Pipe API path — appended to each origin.
+ *
+ * @type {string}
+ */
+const PIPE_PATH = "/api/secure/pipe";
+
+/**
+ * XOR obfuscation key for pipe response decoding (scheme 2).
+ * 16-byte hex key used when x-obfuscated header = "2".
+ *
+ * @type {Uint8Array}
+ */
+const PIPE_OBF_KEY = new Uint8Array([
+  0x71, 0x95, 0x10, 0x34, 0xf8, 0xfb, 0xcf, 0x53,
+  0xd8, 0x9d, 0xb5, 0x2c, 0xeb, 0x3d, 0xc2, 0x2c,
+]);
+
+/**
+ * Browser-accurate request headers for Cloudflare fingerprinting.
+ * These headers must match what a real Chrome browser sends —
+ * missing or incorrect headers trigger Cloudflare's bot detection.
+ *
+ * @type {Object}
+ */
+const HEADERS = {
+  "User-Agent":
+    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36",
+  Accept: "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8",
+  "Accept-Language": "en-US,en;q=0.5",
+  "sec-ch-ua": '"Chromium";v="131", "Not_A Brand";v="24"',
+  "sec-ch-ua-mobile": "?0",
+  "sec-ch-ua-platform": '"Windows"',
+  "sec-fetch-dest": "document",
+  "sec-fetch-mode": "navigate",
+  "sec-fetch-site": "none",
+  "sec-fetch-user": "?1",
+  Referer: `${CANONICAL_ORIGIN}/`,
+  Origin: CANONICAL_ORIGIN,
+};
+
+// ══════════════════════════════════════════════════════════════
+// CORS & RESPONSE UTILITIES
+// ══════════════════════════════════════════════════════════════
+
+/**
+ * Standard CORS headers applied to every response.
+ * Allows any origin to call the API (open CORS policy).
+ *
+ * @type {Object}
+ */
+const CORS = {
+  "Access-Control-Allow-Origin": "*",
+  "Access-Control-Allow-Methods": "GET, OPTIONS",
+  "Access-Control-Allow-Headers": "Content-Type",
+};
+
+/**
+ * Returns a JSON response with CORS headers.
+ *
+ * @param {*} data - Data to serialize as JSON
+ * @param {number} [status=200] - HTTP status code
+ * @returns {Response} Cloudflare Worker Response object
+ */
+function json(data, status = 200) {
+  return new Response(JSON.stringify(data), {
+    status,
+    headers: { "Content-Type": "application/json", ...CORS },
+  });
+}
+
+/**
+ * Returns a standardized error response.
+ * All errors follow the same shape: { success, message, timestamp }.
+ *
+ * @param {string} msg - Error description
+ * @param {number} [status=500] - HTTP status code
+ * @returns {Response} Error response with CORS headers
+ */
+function error(msg, status = 500) {
+  return json(
+    { success: false, message: msg, timestamp: new Date().toISOString() },
+    status
+  );
+}
+
+// ══════════════════════════════════════════════════════════════
+// ANILIST GRAPHQL CLIENT
+// ══════════════════════════════════════════════════════════════
+
+/**
+ * Executes a GraphQL query against the AniList API.
+ *
+ * @param {string} query - GraphQL query string
+ * @ @param {Object} [variables={}] - Query variables
+ * @returns {Promise<Object>} Parsed data from the GraphQL response
+ * @throws {Error} If the GraphQL response contains errors
+ *
+ * @example
+ *   const data = await anilistQuery(`{ GenreCollection }`);
+ *   console.log(data.GenreCollection); // ["Action", "Comedy", ...]
+ */
+async function anilistQuery(query, variables = {}) {
+  const res = await fetch(ANILIST_URL, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify({ query, variables }),
+  });
+
+  const json = await res.json();
+  if (json.errors) {
+    throw new Error(json.errors[0]?.message || "AniList query failed");
+  }
+  return json.data;
+}
+
+// ══════════════════════════════════════════════════════════════
+// PIPE ENCODE / DECODE
+// ══════════════════════════════════════════════════════════════
+
+/**
+ * Encodes a pipe request payload to base64url.
+ * The pipe endpoint expects the request as base64url-encoded JSON.
+ *
+ * @param {Object} payload - Request payload { path, method, query, body }
+ * @returns {string} Base64url-encoded string (no padding)
+ *
+ * @example
+ *   encodePipeRequest({ path: "/api/episodes", method: "GET", query: { id: 20 } })
+ *   // "eyJwYXRoIjoiL2FwaS9lcGlzb2RlcyIs..."
+ */
+function encodePipeRequest(payload) {
+  return btoa(JSON.stringify(payload))
+    .replace(/\+/g, "-")
+    .replace(/\//g, "_")
+    .replace(/=+$/, "");
+}
+
+/**
+ * Decodes a pipe response based on the x-obfuscated header.
+ *
+ * Miruro's pipe now signals the decode scheme via a response header:
+ *   - Header absent  → plain JSON (no encoding)
+ *   - Header = "1"   → base64url + gzip (no XOR)
+ *   - Header = "2"   → base64url + XOR(PIPE_OBF_KEY) + gzip
+ *
+ * This function handles all three schemes automatically.
+ *
+ * @param {string} encodedStr - Raw response body from pipe endpoint
+ * @param {string|null} obfHeader - Value of x-obfuscated response header
+ * @returns {Promise<Object>} Decoded JSON object
+ * @throws {Error} If decoding fails
+ *
+ * @trick
+ *   The DecompressionStream API is available in Workers but not in Node.js.
+ *   This is why we can't share this exact code with the Express version.
+ */
+async function decodePipeResponse(encodedStr, obfHeader) {
+  // Scheme 0: plain JSON (no header)
+  if (!obfHeader) {
+    return JSON.parse(encodedStr);
+  }
+
+  // Step 1: base64url → raw bytes
+  let bytes = Uint8Array.from(
+    atob(encodedStr.replace(/-/g, "+").replace(/_/g, "/")),
+    (c) => c.charCodeAt(0)
+  );
+
+  // Scheme 2: XOR decrypt before gzip
+  // The XOR key is applied cyclically to each byte
+  if (obfHeader === "2") {
+    for (let i = 0; i < bytes.length; i++) {
+      bytes[i] ^= PIPE_OBF_KEY[i % PIPE_OBF_KEY.length];
+    }
+  }
+
+  // Step 2: gzip → decompressed bytes
+  const decompressed = new DecompressionStream("gzip");
+  const writer = decompressed.writable.getWriter();
+  writer.write(bytes);
+  writer.close();
+
+  // Step 3: bytes → JSON
+  return new Response(decompressed.readable).json();
+}
+
+// ══════════════════════════════════════════════════════════════
+// PIPE REQUEST (MIRROR ROTATION)
+// ══════════════════════════════════════════════════════════════
+
+/**
+ * Sends a request to the Miruro pipe endpoint with automatic mirror rotation.
+ *
+ * Tries each origin in MIRURO_ORIGINS order. If one returns a non-200
+ * status or throws, the next mirror is tried. This provides resilience
+ * against individual mirror outages or rate limits.
+ *
+ * @param {string} path - Pipe API path (e.g. "/api/episodes")
+ * @param {Object} query - Query parameters to encode
+ * @returns {Promise<Object>} Decoded pipe response
+ * @throws {Error} If all mirrors fail
+ *
+ * @trick
+ *   On Cloudflare Workers, fetch() to *.miruro.* routes through
+ *   Cloudflare's internal network — no bot detection triggered.
+ *   This is why Workers succeed where Vercel/serverless fails.
+ */
+async function pipeRequest(path, query) {
+  const payload = { path, method: "GET", query, body: null };
+  const encodedReq = encodePipeRequest(payload);
+
+  // Try each mirror in order
+  for (const origin of MIRURO_ORIGINS) {
+    try {
+      const res = await fetch(`${origin}${PIPE_PATH}?e=${encodedReq}`, {
+        headers: HEADERS,
+      });
+
+      // Cloudflare returns 403 for blocked requests
+      if (!res.ok) continue;
+
+      const obf = res.headers.get("x-obfuscated");
+      const text = await res.text();
+      return await decodePipeResponse(text, obf);
+    } catch (e) {
+      // Mirror failed — try next one
+      continue;
+    }
+  }
+
+  throw new Error("All pipe mirrors failed");
+}
+
+// ══════════════════════════════════════════════════════════════
+// ROUTE HANDLERS
+// ══════════════════════════════════════════════════════════════
+
+// ---- FEATURE: Health check endpoint ----
+/**
+ * Returns API health status, version, and runtime info.
+ * Used by monitoring tools and uptime checkers.
+ *
+ * @param {URLSearchParams} params - Unused
+ * @returns {Promise<Response>} Health status JSON
+ */
+async function healthHandler(params) {
+  return json({
+    success: true,
+    results: {
+      status: "healthy",
+      version: "2.3.0-worker",
+      runtime: "cloudflare-workers",
+      endpoints: 15,
+      timestamp: new Date().toISOString(),
+    },
+  });
+}
+
+// ---- FEATURE: Full-text anime search ----
+/**
+ * Searches AniList for anime matching the given query.
+ * Returns paginated results with full metadata per result.
+ *
+ * @param {URLSearchParams} params - query (required), page, per_page
+ * @returns {Promise<Response>} Paginated search results
+ * @throws {400} If query parameter is missing
+ *
+ * @example
+ *   GET /api/search?query=naruto&page=1&per_page=10
+ */
+async function searchHandler(params) {
+  const query = params.get("query");
+  if (!query) return error("query parameter is required", 400);
+
+  const page = parseInt(params.get("page") || "1");
+  const perPage = parseInt(params.get("per_page") || "20");
+
+  const gql = `query ($search: String, $page: Int, $perPage: Int) {
+    Page(page: $page, perPage: $perPage) {
+      pageInfo { total currentPage hasNextPage perPage }
+      media(search: $search, type: ANIME, sort: SEARCH_MATCH) {
+        id title { romaji english native }
+        coverImage { large }
+        format season seasonYear episodes
+        status averageScore genres popularity
+      }
+    }
+  }`;
+
+  const data = await anilistQuery(gql, { search: query, page, perPage });
+  return json({ success: true, results: data.Page });
+}
+
+// ---- FEATURE: Autocomplete suggestions ----
+/**
+ * Returns fast autocomplete suggestions for search input.
+ * Limited to 8 results for low-latency response.
+ *
+ * @param {URLSearchParams} params - query (required)
+ * @returns {Promise<Response>} Array of suggestion objects
+ */
+async function suggestionsHandler(params) {
+  const query = params.get("query");
+  if (!query) return error("query parameter is required", 400);
+
+  const gql = `query ($search: String) {
+    Page(page: 1, perPage: 8) {
+      media(search: $search, type: ANIME, sort: SEARCH_MATCH) {
+        id title { romaji english }
+        coverImage { large }
+        format status seasonYear episodes
+      }
+    }
+  }`;
+
+  const data = await anilistQuery(gql, { search: query });
+  return json({ success: true, results: data.Page.media });
+}
+
+// ---- FEATURE: Advanced filter with multiple params ----
+/**
+ * Filters anime by genre, tag, year, season, format, and status.
+ * All parameters are optional — combine them for narrow results.
+ *
+ * @param {URLSearchParams} params - genre, tag, year, season, format, status, sort, page, per_page
+ * @returns {Promise<Response>} Filtered and paginated results
+ *
+ * @trick
+ *   GraphQL variables are built dynamically based on which params
+ *   are present. This avoids sending null variables to AniList.
+ */
+async function filterHandler(params) {
+  const genre = params.get("genre");
+  const tag = params.get("tag");
+  const year = params.get("year") ? parseInt(params.get("year")) : undefined;
+  const season = params.get("season");
+  const format = params.get("format");
+  const status = params.get("status");
+  const sort = params.get("sort") || "POPULARITY_DESC";
+  const page = parseInt(params.get("page") || "1");
+  const perPage = parseInt(params.get("per_page") || "20");
+
+  // Build dynamic variables and filter strings
+  const variables = { page, perPage, sort };
+  const filters = [];
+
+  if (genre) { filters.push("genre: $genre"); variables.genre = genre; }
+  if (tag) { filters.push("tag: $tag"); variables.tag = tag; }
+  if (year) { filters.push("seasonYear: $seasonYear"); variables.seasonYear = year; }
+  if (season) { filters.push("season: $season"); variables.season = season; }
+  if (format) { filters.push("format: $format"); variables.format = format; }
+  if (status) { filters.push("status: $status"); variables.status = status; }
+
+  // Build type declarations for present variables
+  const typeDecls = [
+    "$page: Int", "$perPage: Int", "$sort: [MediaSort]",
+    genre && "$genre: Genre",
+    tag && "$tag: String",
+    year && "$seasonYear: Int",
+    season && "$season: Season",
+    format && "$format: MediaFormat",
+    status && "$status: MediaStatus",
+  ].filter(Boolean).join(", ");
+
+  const gql = `query (${typeDecls}) {
+    Page(page: $page, perPage: $perPage) {
+      pageInfo { total currentPage hasNextPage perPage }
+      media(${filters.join(", ")}, type: ANIME, sort: $sort) {
+        id title { romaji english }
+        coverImage { large }
+        format status averageScore episodes
+      }
+    }
+  }`;
+
+  const data = await anilistQuery(gql, variables);
+  return json({ success: true, results: data.Page });
+}
+
+// ---- FEATURE: Trending anime ----
+/**
+ * Returns currently trending anime (releasing only).
+ * Sorted by trending score on AniList.
+ *
+ * @param {URLSearchParams} params - per_page (optional, default 20)
+ * @returns {Promise<Response>} Trending anime list
+ */
+async function trendingHandler(params) {
+  const perPage = parseInt(params.get("per_page") || "20");
+
+  const gql = `query ($perPage: Int) {
+    Page(page: 1, perPage: $perPage) {
+      media(type: ANIME, sort: TRENDING, status: RELEASING) {
+        id title { romaji english }
+        coverImage { large }
+        format status averageScore episodes genres
+      }
+    }
+  }`;
+
+  const data = await anilistQuery(gql, { perPage });
+  return json({ success: true, results: { results: data.Page.media } });
+}
+
+// ---- FEATURE: Popular anime ----
+/**
+ * Returns most popular anime of all time.
+ * Sorted by AniList popularity metric.
+ *
+ * @param {URLSearchParams} params - per_page (optional, default 20)
+ * @returns {Promise<Response>} Popular anime list
+ */
+async function popularHandler(params) {
+  const perPage = parseInt(params.get("per_page") || "20");
+
+  const gql = `query ($perPage: Int) {
+    Page(page: 1, perPage: $perPage) {
+      media(type: ANIME, sort: POPULARITY_DESC) {
+        id title { romaji english }
+        coverImage { large }
+        format status averageScore episodes genres
+      }
+    }
+  }`;
+
+  const data = await anilistQuery(gql, { perPage });
+  return json({ success: true, results: { results: data.Page.media } });
+}
+
+// ---- FEATURE: Top scored anime ----
+/**
+ * Returns highest scored anime on AniList.
+ * Sorted by average score descending.
+ *
+ * @param {URLSearchParams} params - per_page (optional, default 20)
+ * @returns {Promise<Response>} Top scored anime list
+ */
+async function topHandler(params) {
+  const perPage = parseInt(params.get("per_page") || "20");
+
+  const gql = `query ($perPage: Int) {
+    Page(page: 1, perPage: $perPage) {
+      media(type: ANIME, sort: SCORE_DESC) {
+        id title { romaji english }
+        coverImage { large }
+        format status averageScore episodes genres
+      }
+    }
+  }`;
+
+  const data = await anilistQuery(gql, { perPage });
+  return json({ success: true, results: { results: data.Page.media } });
+}
+
+// ---- FEATURE: Complete anime info by AniList ID ----
+/**
+ * Returns full anime details including description, studios,
+ * tags, next airing episode, and more.
+ *
+ * @param {string} id - AniList anime ID (path param)
+ * @returns {Promise<Response>} Complete anime info
+ *
+ * @example
+ *   GET /api/info/20  → Naruto
+ *   GET /api/info/1535 → Death Note
+ */
+async function infoHandler(params, id) {
+  const gql = `query ($id: Int) {
+    Media(id: $id, type: ANIME) {
+      id idMal
+      title { romaji english native }
+      description
+      coverImage { large extraLarge }
+      bannerImage
+      format season seasonYear
+      episodes duration
+      status averageScore meanScore
+      popularity favourites
+      genres
+      tags { name }
+      studios { nodes { name isAnimationStudio } }
+      startDate { year month day }
+      endDate { year month day }
+      nextAiringEpisode { episode airingAt timeUntilAiring }
+    }
+  }`;
+
+  const data = await anilistQuery(gql, { id: parseInt(id) });
+  return json({ success: true, results: data.Media });
+}
+
+// ---- FEATURE: Anime characters with voice actors ----
+/**
+ * Returns characters for an anime, including Japanese voice actors.
+ * Characters are sorted by role importance (MAIN first).
+ *
+ * @param {string} id - AniList anime ID (path param)
+ * @returns {Promise<Response>} Character list with voice actors
+ */
+async function charactersHandler(params, id) {
+  const gql = `query ($id: Int) {
+    Media(id: $id, type: ANIME) {
+      characters(sort: ROLE, perPage: 25) {
+        edges {
+          role
+          node { id name { full native } image { large } }
+          voiceActors(language: JAPANESE) {
+            id name { full native } languageV2
+          }
+        }
+      }
+    }
+  }`;
+
+  const data = await anilistQuery(gql, { id: parseInt(id) });
+  return json({ success: true, results: data.Media.characters });
+}
+
+// ---- FEATURE: Anime relations (sequels, prequels, etc.) ----
+/**
+ * Returns related anime (sequels, prequels, side stories, etc.).
+ * Useful for building "watch order" guides.
+ *
+ * @param {string} id - AniList anime ID (path param)
+ * @returns {Promise<Response>} Relations with connected anime
+ */
+async function relationsHandler(params, id) {
+  const gql = `query ($id: Int) {
+    Media(id: $id, type: ANIME) {
+      relations {
+        edges {
+          relationType
+          node {
+            id title { romaji english }
+            coverImage { large }
+            format status
+          }
+        }
+      }
+    }
+  }`;
+
+  const data = await anilistQuery(gql, { id: parseInt(id) });
+  return json({ success: true, results: data.Media.relations });
+}
+
+// ---- FEATURE: All genres list ----
+/**
+ * Returns the complete list of AniList genres.
+ * Static data — rarely changes.
+ *
+ * @returns {Promise<Response>} Array of genre strings
+ */
+async function genresHandler() {
+  const gql = `{ GenreCollection }`;
+  const data = await anilistQuery(gql);
+  return json({ success: true, results: data.GenreCollection });
+}
+
+// ---- FEATURE: Episode list from Miruro pipe ----
+/**
+ * Fetches episode list for an anime from the Miruro pipe.
+ * Uses mirror rotation to maximize success rate.
+ *
+ * @param {string} id - AniList anime ID (path param)
+ * @returns {Promise<Response>} Episode data from all providers
+ *
+ * @trick
+ *   This endpoint calls the pipe, which is where Cloudflare Workers
+ *   shine — edge-to-edge requests bypass bot detection entirely.
+ */
+async function episodesHandler(params, id) {
+  try {
+    const data = await pipeRequest("/api/episodes", { id });
+    return json({ success: true, results: data });
+  } catch (e) {
+    return error(`All pipe methods failed: ${e.message}`);
+  }
+}
+
+// ---- FEATURE: Streaming sources for a specific episode ----
+/**
+ * Fetches streaming sources for a specific episode.
+ * Returns M3U8 URLs, subtitles, and quality info.
+ *
+ * @param {string} provider - Provider name (kiwi, pewe, bonk, etc.)
+ * @param {string} anilistId - AniList anime ID
+ * @param {string} category - sub or dub
+ * @param {string} slug - Episode slug from episodes response
+ * @returns {Promise<Response>} Streaming sources and subtitles
+ */
+async function watchHandler(params, provider, anilistId, category, slug) {
+  try {
+    const data = await pipeRequest("/api/watch", { provider, anilistId, category, slug });
+    return json({ success: true, results: data });
+  } catch (e) {
+    return error(`All pipe methods failed: ${e.message}`);
+  }
+}
+
+// ---- FEATURE: Random anime ----
+/**
+ * Returns a random anime from AniList.
+ * Uses random pagination to pick from the top 1000 most popular.
+ *
+ * @returns {Promise<Response>} Random anime details
+ *
+ * @trick
+ *   Two levels of randomness: random page (1-50) + random index
+ *   within that page. This gives a uniform distribution across
+ *   the top ~1000 most popular anime.
+ */
+async function randomHandler() {
+  const page = Math.floor(Math.random() * 50) + 1;
+  const perPage = Math.floor(Math.random() * 20) + 1;
+
+  const gql = `query ($page: Int, $perPage: Int) {
+    Page(page: $page, perPage: $perPage) {
+      media(type: ANIME, sort: POPULARITY_DESC) {
+        id title { romaji english native }
+        coverImage { large }
+        format season seasonYear
+        episodes status averageScore genres popularity
+      }
+    }
+  }`;
+
+  const data = await anilistQuery(gql, { page, perPage });
+  const media = data.Page.media;
+  return json({
+    success: true,
+    results: media[Math.floor(Math.random() * media.length)] || null,
+  });
+}
+
+// ══════════════════════════════════════════════════════════════
+// ROUTER
+// ══════════════════════════════════════════════════════════════
+
+/**
+ * Route table mapping "METHOD /pattern" to handler functions.
+ * Patterns support :param placeholders for dynamic path segments.
+ *
+ * @type {Object<string, Function>}
+ *
+ * @trick
+ *   Routes are matched longest-first, so /api/anime/:id/characters
+ *   matches before /api/anime/:id. This prevents ambiguous matches.
+ */
+const ROUTES = {
+  // ---- System ----
+  "GET /api/health": healthHandler,
+
+  // ---- Search ----
+  "GET /api/search": searchHandler,
+  "GET /api/suggestions": suggestionsHandler,
+  "GET /api/filter": filterHandler,
+
+  // ---- Collections ----
+  "GET /api/trending": trendingHandler,
+  "GET /api/popular": popularHandler,
+  "GET /api/top": topHandler,
+  "GET /api/random": randomHandler,
+
+  // ---- Anime Details ----
+  "GET /api/info/:id": infoHandler,
+  "GET /api/anime/:id/characters": charactersHandler,
+  "GET /api/anime/:id/relations": relationsHandler,
+
+  // ---- Metadata ----
+  "GET /api/genres": genresHandler,
+
+  // ---- Streaming (pipe) ----
+  "GET /api/episodes/:id": episodesHandler,
+  "GET /api/watch/:provider/:anilistId/:category/:slug": watchHandler,
+};
+
+/**
+ * Matches a request method + path against the route table.
+ * Supports :param placeholders for dynamic segments.
+ *
+ * @param {string} method - HTTP method (GET, POST, etc.)
+ * @param {string} path - URL path (e.g. /api/info/20)
+ * @returns {{ handler: Function, params: string[] } | null} Matched route info, or null
+ *
+ * @trick
+ *   The router tries exact matches first, then pattern matches.
+ *   Pattern matches extract :param values into the params array
+ *   which are passed as positional arguments to the handler.
+ */
+function matchRoute(method, path) {
+  // Try exact match first (fast path)
+  const exact = `${method} ${path}`;
+  if (ROUTES[exact]) return { handler: ROUTES[exact], params: [] };
+
+  // Try pattern matches (slower, handles :params)
+  for (const key of Object.keys(ROUTES)) {
+    const [m, pattern] = key.split(" ");
+    if (m !== method) continue;
+
+    const patternParts = pattern.split("/");
+    const pathParts = path.split("/");
+    if (patternParts.length !== pathParts.length) continue;
+
+    const params = [];
+    let match = true;
+
+    for (let i = 0; i < patternParts.length; i++) {
+      if (patternParts[i].startsWith(":")) {
+        // Dynamic segment — extract value
+        params.push(pathParts[i]);
+      } else if (patternParts[i] !== pathParts[i]) {
+        // Static segment — must match exactly
+        match = false;
+        break;
+      }
+    }
+
+    if (match) return { handler: ROUTES[key], params };
+  }
+
+  return null;
+}
+
+// ══════════════════════════════════════════════════════════════
+// WORKER ENTRY POINT
+// ══════════════════════════════════════════════════════════════
+
+/**
+ * Main fetch event handler. Cloudflare Workers use this instead
+ * of Express app.listen(). Every incoming request goes through here.
+ *
+ * @param {FetchEvent} event - Cloudflare fetch event
+ * @returns {Response} HTTP response
+ *
+ * @trick
+ *   Workers don't have a server process — they're stateless functions
+ *   that spin up on demand and die after responding. No persistent
+ *   memory between requests (use KV or Durable Objects for state).
+ */
+addEventListener("fetch", (event) => {
+  event.respondWith(handleRequest(event));
+});
+
+/**
+ * Core request handler. Routes requests, handles CORS preflight,
+ * and serves the landing page.
+ *
+ * @param {FetchEvent} event - Cloudflare fetch event
+ * @returns {Promise<Response>} HTTP response
+ */
+async function handleRequest(event) {
+  const req = event.request;
+  const url = new URL(req.url);
+
+  // CORS preflight
+  if (req.method === "OPTIONS") {
+    return new Response(null, { status: 204, headers: CORS });
+  }
+
+  // Landing page
+  if (url.pathname === "/") {
+    return new Response(
+      `<!DOCTYPE html>
+<html lang="en">
+<head><meta charset="UTF-8"><title>MiruroAPI — Cloudflare Worker</title></head>
+<body style="font-family:system-ui;background:#0A0A12;color:#E2E8F0;display:flex;align-items:center;justify-content:center;min-height:100vh;margin:0">
+  <div style="text-align:center;max-width:600px;padding:40px">
+    <h1 style="font-size:2.5rem;margin-bottom:8px">📺 <span style="background:linear-gradient(135deg,#A855F7,#EC4899);-webkit-background-clip:text;-webkit-text-fill-color:transparent">MiruroAPI</span></h1>
+    <p style="color:#94A3B8;margin-bottom:24px">Cloudflare Worker Edition — 15 endpoints, zero cold starts</p>
+    <div style="display:flex;gap:12px;justify-content:center;flex-wrap:wrap">
+      <a href="/api/health" style="background:#A855F7;color:white;padding:10px 20px;border-radius:8px;text-decoration:none;font-weight:600">Health Check</a>
+      <a href="/api/search?query=naruto" style="background:#6366F1;color:white;padding:10px 20px;border-radius:8px;text-decoration:none;font-weight:600">Search Anime</a>
+      <a href="/api/trending" style="background:#EC4899;color:white;padding:10px 20px;border-radius:8px;text-decoration:none;font-weight:600">Trending</a>
+    </div>
+    <p style="color:#64748B;font-size:0.8rem;margin-top:40px">Shinei Nouzen • MIT License</p>
+  </div>
+</body>
+</html>`,
+      { headers: { "Content-Type": "text/html", ...CORS } }
+    );
+  }
+
+  // Route matching
+  const route = matchRoute(req.method, url.pathname);
+  if (!route) return error("Not found", 404);
+
+  // Execute handler
+  try {
+    return await route.handler(url.searchParams, ...route.params);
+  } catch (e) {
+    return error(e.message);
+  }
+}
+
+// ══════════════════════════════════════════════════════════════
+// MODULE FOOTER
+// ══════════════════════════════════════════════════════════════
+//
+// End of MiruroAPI Worker Edition
+//
+// Deploy with: wrangler deploy
+// Test locally: wrangler dev
+//
+// Routes:
+//   /api/health                        → System health check
+//   /api/search?query=naruto           → Full-text search
+//   /api/suggestions?query=naruto      → Autocomplete
+//   /api/filter?genre=Action           → Advanced filter
+//   /api/trending                      → Trending anime
+//   /api/popular                       → Most popular
+//   /api/top                           → Top scored
+//   /api/random                        → Random anime
+//   /api/info/20                       → Full anime info
+//   /api/anime/20/characters           → Characters + VAs
+//   /api/anime/20/relations            → Related anime
+//   /api/genres                        → All genres
+//   /api/episodes/20                   → Episode list (pipe)
+//   /api/watch/kiwi/20/sub/episode-1   → Streaming sources (pipe)
+//
+// ══════════════════════════════════════════════════════════════