feat(docs): move the site to prdcs.wiki on a Cloudflare Worker

Blume's cloudflare() adapter builds the docs as the prdcs-wiki Worker
(apps/docs/wrangler.jsonc: name, prdcs.wiki custom domain), and deploy.yml
ships it with wrangler instead of GitHub Pages. The SRS Worker's DOCS_URL /
DOCS_ORIGIN, release links and README badge follow the new domain.

apps/cli/release-topics.ts

@@ -60,7 +60,7 @@ const DRY =
   process.env.DRY_RUN === "true";
 
 /** The docs site (apps/docs/blume.config.ts `deployment.site`); sync publishes `/<num>` short links. */
-const DOCS_SITE = "https://lc.prd.lk";
+const DOCS_SITE = "https://prdcs.wiki";
 const TIMEVER = "https://gist.github.com/twolfson/de1b004dd22536b8e668";
 
 const gh = await github();

apps/cli/sync.ts

@@ -68,7 +68,7 @@
  * there would otherwise wipe the page's `## Solution`.
  *
  * Every page also gets a short link: `/<num>` → `/<topic>/<slug>` (so
- * `/leetcode/217` opens Contains Duplicate). The rules live in the generated
+ * `/217` opens Contains Duplicate). The rules live in the generated
  * `apps/docs/redirects.ts`, which `blume.config.ts` imports — Blume takes exact
  * root-relative paths and prepends the deployment base itself.
  */
@@ -944,7 +944,7 @@ for (const sol of ordered) {
 {
   const module = [
     "// Generated by `bun run sync` (apps/cli/sync.ts) — do not edit.",
-    "// `/leetcode/<num>` → that problem's page; exact paths, base added by Blume.",
+    "// `/<num>` → that problem's page; exact paths, base added by Blume.",
     "export default [",
     ...redirects,
     "];",