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.

.github/workflows/deploy.yml

@@ -7,18 +7,20 @@ on:
 
 permissions:
   contents: read
-  pages: write
-  id-token: write
 
-# The Worker deploy is idempotent (wrangler uploads the whole bundle), so on a
-# burst of pushes only the last one matters: cancel-in-progress is correct for
-# both the Pages build and the Worker job.
+# Both Workers deploy idempotently (wrangler uploads the whole bundle and
+# only changed assets), so on a burst of pushes only the last one matters:
+# cancel-in-progress is correct for both jobs.
 concurrency:
   group: deploy
   cancel-in-progress: true
 
 jobs:
-  build:
+  # The docs site: a Blume `cloudflare()` server build (apps/docs/blume.config.ts)
+  # deployed as the `prdcs-wiki` Worker on the prdcs.wiki custom domain
+  # (apps/docs/wrangler.jsonc). Needs CLOUDFLARE_API_TOKEN to also carry
+  # Workers Routes: Edit on the prdcs.wiki zone for the custom domain.
+  deploy-docs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -27,7 +29,7 @@ jobs:
         with:
           node-version: 22 # Blume requires 22.12+
 
-      - uses: oven-sh/setup-bun@v2 # skip if you use npm/pnpm
+      - uses: oven-sh/setup-bun@v2
 
       - run: bun install --frozen-lockfile
       # pages/changelog.astro reads this repo's GitHub releases at build time
@@ -38,19 +40,12 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
-      - uses: actions/upload-pages-artifact@v3
-        with:
-          path: apps/docs/dist
-
-  deploy:
-    needs: build
-    runs-on: ubuntu-latest
-    environment:
-      name: github-pages
-      url: ${{ steps.deployment.outputs.page_url }}
-    steps:
-      - id: deployment
-        uses: actions/deploy-pages@v4
+      # `blume build` writes .wrangler/deploy/config.json, which points
+      # wrangler at the built dist/server/wrangler.json.
+      - run: bun run docs:deploy
+        env:
+          CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
 
   # Deploys on every main push (not path-filtered): apps/api/data/schedule.json
   # is bundled at deploy time, and re-deploying an unchanged Worker is a no-op.