D1 Part 3 leftovers: remove 8 residual emoji + Python emoji gate

- The D0 grep gate false-negatived multibyte emoji on Windows (its zero
  was wrong). scripts/emoji_gate.py scans by Unicode codepoint; it found
  8 survivors: backups.html (📁→file-text icon, 🔄 restore-info text),
  debug.html (🔄→'fut', 🔒→'titkosított'), deploy.html (📦→upload icon,
  ★ default-marker → '(alapértelmezett)'), storage.html (📦→upload icon,
  📦 in the migrate-target option → plain text). All → sprite icons or
  plain words.
- Gates: scripts/emoji_gate.py = 0; new Go TestNoEmojiInTemplates
  codepoint scan keeps it enforced (allowlist: ✓✗✔✘•●○■▶ monochrome
  text marks). go build/vet/test ./... green (18 pkgs).

controller/internal/web/templates/deploy.html

@@ -69,7 +69,7 @@
         </div>
         {{if .OtherStoragePaths}}
         <span class="btn btn-sm btn-outline" style="margin-top:.75rem;opacity:.45;cursor:not-allowed" title="Hamarosan">
-            📦 Mozgatás másik tárolóra
+            <svg class="ico ico-sm"><use href="#i-upload"/></svg> Mozgatás másik tárolóra
         </span>
         {{end}}
     </div>
@@ -565,7 +565,7 @@
                     {{range $.StoragePaths}}
                     <option value="{{.Path}}" data-free-percent="{{printf "%.0f" .FreePercent}}"
                             {{if .IsDefault}}selected{{end}}>
-                        {{.Label}} — {{.FreeHuman}} szabad{{if .IsDefault}} ★{{end}}
+                        {{.Label}} — {{.FreeHuman}} szabad{{if .IsDefault}} (alapértelmezett){{end}}
                     </option>
                     {{end}}
                 </select>