workflows: replace github.server_url with vars.URL_TO_GITEA

Gitea blocks vars/secrets prefixed with GITEA_ or GITHUB_.
Also avoids relying on github.server_url which resolves to
github.com rather than the local Gitea instance on this runner.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/publish-songs.yml

@@ -30,23 +30,16 @@ jobs:
       - name: Checkout ncmr-songs
         env:
           FAPAT: ${{ secrets.FAPAT }}
+          URL_TO_GITEA: ${{ vars.URL_TO_GITEA }}
         run: |
-          SERVER="${{ github.server_url }}"
-          PROTO="${SERVER%%://*}"
-          HOST="${SERVER#*://}"
-          AUTHED="${PROTO}://mikkeli:${FAPAT}@${HOST}"
-          git clone "${AUTHED}/mikkeli/ncmr-songs" ncmr-songs
+          git clone "http://mikkeli:${FAPAT}@${URL_TO_GITEA#http://}/mikkeli/ncmr-songs" ncmr-songs
           git -C ncmr-songs checkout ${{ inputs.SOURCE_REF }}
 
       - name: Checkout auto-wiki
         env:
           FAPAT: ${{ secrets.FAPAT }}
-        run: |
-          SERVER="${{ github.server_url }}"
-          PROTO="${SERVER%%://*}"
-          HOST="${SERVER#*://}"
-          AUTHED="${PROTO}://mikkeli:${FAPAT}@${HOST}"
-          git clone "${AUTHED}/mikkeli/novoyuuparosk-auto-wiki" auto-wiki
+          URL_TO_GITEA: ${{ vars.URL_TO_GITEA }}
+        run: git clone "http://mikkeli:${FAPAT}@${URL_TO_GITEA#http://}/mikkeli/novoyuuparosk-auto-wiki" auto-wiki
 
       - name: Install Python deps
         run: pip install --no-cache-dir -r auto-wiki/pipelines/songs/requirements.txt
@@ -77,7 +70,7 @@ jobs:
           WIKI_BOT_USER: ${{ secrets.WIKI_BOT_USER }}
           WIKI_BOT_PASSWORD: ${{ secrets.WIKI_BOT_PASSWORD }}
           SOURCE_REF: ${{ inputs.SOURCE_REF }}
-          GITEA_REPO_URL: ${{ github.server_url }}/mikkeli/ncmr-songs
+          GITEA_REPO_URL: ${{ vars.URL_TO_GITEA }}/mikkeli/ncmr-songs
         run: |
           MODE="${{ steps.diff.outputs.mode }}"
           if [ "$MODE" = "all" ] || [ "${{ inputs.FULL_PUBLISH }}" = "true" ]; then