chore: remove one-time branding repair workflow

.github/workflows/branding-repair-v1774.yml

@@ -1,46 +0,0 @@
-name: Caterium One-Time Branding Repair
-on:
-  push:
-    branches: ["fix/caterium-branding-v1774"]
-permissions:
-  contents: write
-concurrency:
-  group: caterium-branding-repair-v1774
-  cancel-in-progress: false
-jobs:
-  repair:
-    if: ${{ !contains(github.event.head_commit.message, '[branding-repair]') }}
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: fix/caterium-branding-v1774
-          fetch-depth: 0
-      - name: Replace visible legacy branding
-        shell: bash
-        run: |
-          node <<'NODE'
-          const fs=require('fs');
-          const path='public/index.html';
-          let src=fs.readFileSync(path,'utf8');
-          const replacements=[
-            ['<title>Солнце Кейтеринг</title>','<title>Caterium</title>'],
-            ['<meta name="apple-mobile-web-app-title" content="Солнце">','<meta name="apple-mobile-web-app-title" content="Caterium">'],
-            ['<div class="brand"><span class="sun">☼</span>Солнце Кейтеринг</div>','<div class="brand"><span class="sun">☼</span>Caterium</div>']
-          ];
-          for(const [from,to] of replacements){
-            const count=src.split(from).length-1;
-            if(count!==1) throw new Error(`Expected exactly one occurrence: ${from}; found ${count}`);
-            src=src.replace(from,to);
-          }
-          fs.writeFileSync(path,src);
-          NODE
-      - name: Commit branding repair
-        shell: bash
-        run: |
-          set -euo pipefail
-          git config user.name "github-actions[bot]"
-          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
-          git add public/index.html
-          git commit -m "brand: replace visible legacy name [branding-repair]"
-          git push origin HEAD:fix/caterium-branding-v1774