feat(adapters): RSS and PT site adapters ported from MoviePilot v3 + mocks (W1-3b)

- rss: port of MP RssHelper._parse_impl/get_rss_link semantics with safe
  XML (entities off, DTD/ENTITY rejected, size/item caps), ETag/Last-Modified,
  backoff + Retry-After, circuit breaker with manual reset, passkey redaction,
  overlap-window GUID+digest dedupe
- sites/spider: TS port of MP SiteSpider (indexer schema, search URL builder,
  field DSL, filters, Jinja templates via nunjucks, login-page detection);
  audiences definition hand-written as JSON; raw category id preserved;
  shared per-site token bucket
- sites/mteam: port of MP MTorrentSpider (params, result mapping, promo
  factors, genDlToken flow) without embedding the API key in enclosures;
  business code/message checks
- testkit: mock RSS server, mock NexusPHP site, mock M-Team API
- docs: W1-3b migration mapping appended to porting ledger

Co-Authored-By: Claude Fable 5.1 <[email protected]>

packages/adapters/src/sites/index.ts

@@ -0,0 +1,61 @@
+export { audiencesDefinition, loadIndexerDefinition } from "./definitions";
+export type { SiteAdapterDeps } from "./deps";
+export { createMteamAdapter, mteamTorrentToRelease } from "./mteam/adapter";
+export { type MteamApiPath, mteamPost } from "./mteam/client";
+export { type MteamDefinition, mteamApiBase, mteamDefinition } from "./mteam/definition";
+export {
+  findImdbid,
+  getDownloadVolumeFactor,
+  getUploadVolumeFactor,
+  type MteamTorrentJson,
+  mteamSearchParams,
+  parseMteamResult,
+} from "./mteam/spider";
+export { createSiteRateLimiter, type RateLimiterOptions, type SiteRateLimiter } from "./rate-limit";
+export { createSiteAdapter, getSiteAdapter, SITE_DEFINITIONS, type SiteDefinition } from "./registry";
+export { clearSearchText, createSpiderSiteAdapter } from "./spider/adapter";
+export { parseDetailPage } from "./spider/detail";
+export { promotionFromFactors, spiderTorrentToRelease } from "./spider/map";
+export type {
+  IndexerDefinition,
+  SpiderCategoryConfig,
+  SpiderCategoryItem,
+  SpiderFieldSelector,
+  SpiderFields,
+  SpiderFilter,
+  UmtSiteExtension,
+} from "./spider/schema";
+export {
+  combineUrl,
+  type MediaKind,
+  type MpMediaType,
+  parseSizeMp,
+  resolveCategoryMediaType,
+  SiteSpider,
+  type SiteSpiderQuery,
+  type SpiderTorrent,
+  selectMediaCategories,
+} from "./spider/spider";
+export {
+  type DownloadTarget,
+  type HitAndRun,
+  type PromotionType,
+  type SecretResolver,
+  type SiteAdapter,
+  type SiteCallOptions,
+  type SiteCapabilities,
+  type SiteCategory,
+  type SiteCredentialKind,
+  SiteError,
+  type SiteErrorKind,
+  type SiteHealth,
+  type SiteHealthStatus,
+  type SiteKind,
+  type SiteListFilters,
+  type SitePage,
+  type SitePromotion,
+  type SiteRelease,
+  type SiteReleaseDetail,
+  staticSecretResolver,
+} from "./types";
+export { parseCount, parseSiteTime } from "./util";