deploy firefox beta releases to github pages, enable updates

.github/workflows/release.yml

@@ -106,7 +106,7 @@ jobs:
 
       # Firefox Beta
       - name: Create Firefox Beta artifacts
-        run: npm run build:firefox -- --env stream=beta
+        run: npm run build:firefox -- --env stream=beta --env autoupdate
       - uses: actions/upload-artifact@v4
         with:
           name: FirefoxExtensionBeta
@@ -120,10 +120,8 @@ jobs:
         env:
           WEB_EXT_API_KEY: ${{ secrets.WEB_EXT_API_KEY }}
           WEB_EXT_API_SECRET: ${{ secrets.WEB_EXT_API_SECRET }}
-      - name: Install rename
-        run: sudo apt-get install rename
       - name: Rename signed file
-        run: cd ./web-ext-artifacts ; rename 's/.*/FirefoxSignedInstaller.xpi/' *
+        run: mv ./web-ext-artifacts/* ./web-ext-artifacts/FirefoxSignedInstaller.xpi
       - uses: actions/upload-artifact@v4
         with:
           name: FirefoxExtensionSigned.xpi
@@ -137,3 +135,60 @@ jobs:
           path: ./web-ext-artifacts/FirefoxSignedInstaller.xpi
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Prepare new github pages deployment
+        shell: python
+        run: |
+          from pathlib import Path
+          import json
+          import os
+
+          # config stuff
+          installer_name = "FirefoxSignedInstaller.xpi"
+          owner, repo_name = os.environ["GITHUB_REPOSITORY"].split("/")
+          owner = owner.lower()
+
+          # create the github paged dir
+          ghp_dir = Path("./github-pages")
+          ghp_dir.mkdir(parents=True, exist_ok=True)
+
+          # move in the installer
+          Path("./web-ext-artifacts", installer_name).rename(ghp_dir / installer_name)
+
+          # read manifest.json and extract parameters
+          with open("./dist/manifest.json") as f:
+            manifest = json.load(f)
+          current_version = manifest["version"]
+          ext_id = manifest["browser_specific_settings"]["gecko"]["id"]
+
+          # generate updates file
+          updates = {
+            "addons": {
+              ext_id: {
+                "updates": [
+                  {
+                    "version": current_version,
+                    # param doesn't actually matter, it's just a cachebuster
+                    "update_link": f"https://{owner}.github.io/{repo_name}/{installer_name}?v={current_version}",
+                  },
+                ],
+              },
+            },
+          }
+          (ghp_dir / "updates.json").write_text(json.dumps(updates))
+
+      - name: Upload new github pages deployment
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: ./github-pages
+
+  deploy-ghp:
+    name: Deploy to github pages
+    needs: build
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Deploy
+        id: deployment
+        uses: actions/deploy-pages@v4