Trim the Godot template cache and separate CI cache keys

Cache only Linux/Windows/macOS/Web release templates instead of the full 1.2 GB
archive, and use distinct binary cache keys for the checks and build jobs so
concurrent runs do not fight over the same cache entry.

.gitea/workflows/build.yml

@@ -25,7 +25,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: /usr/local/bin/godot
-          key: godot-${{ runner.os }}-${{ env.GODOT_VERSION }}-v1
+          key: godot-checks-${{ runner.os }}-${{ env.GODOT_VERSION }}-v2
 
       - name: Install Godot 4.7.2
         run: |
@@ -75,13 +75,13 @@ jobs:
         uses: actions/cache@v4
         with:
           path: /usr/local/bin/godot
-          key: godot-${{ runner.os }}-${{ env.GODOT_VERSION }}-v1
+          key: godot-build-${{ runner.os }}-${{ env.GODOT_VERSION }}-v2
 
       - name: Restore export templates cache
         uses: actions/cache@v4
         with:
           path: ~/.local/share/godot/export_templates/4.7.2.stable
-          key: godot-templates-${{ runner.os }}-${{ env.GODOT_VERSION }}-v1
+          key: godot-templates-${{ runner.os }}-${{ env.GODOT_VERSION }}-v2
 
       - name: Install Godot 4.7.2 and export templates
         run: |
@@ -92,17 +92,26 @@ jobs:
             sudo install /tmp/godot-bin/Godot_v4.7.2-stable_linux.x86_64 /usr/local/bin/godot
           fi
           godot --version
-          if [ -f "$HOME/.local/share/godot/export_templates/4.7.2.stable/linux_release.x86_64" ]; then
-            ls "$HOME/.local/share/godot/export_templates/4.7.2.stable" | head -5
+          TEMPLATE_DIR="$HOME/.local/share/godot/export_templates/4.7.2.stable"
+          NEEDED="version.txt icudt_godot.dat linux_release.x86_64 windows_release_x86_64.exe macos.zip web_nothreads_release.zip web_dlink_nothreads_release.zip"
+          missing=0
+          for file in $NEEDED; do
+            [ -f "$TEMPLATE_DIR/$file" ] || missing=1
+          done
+          if [ "$missing" -eq 0 ]; then
+            echo "export templates restored from cache"
+            ls "$TEMPLATE_DIR" | head -10
             exit 0
           fi
           curl -sL -o /tmp/templates.tpz \
             https://github.com/godotengine/godot/releases/download/4.7.2-stable/Godot_v4.7.2-stable_export_templates.tpz
           rm -rf /tmp/tpl && mkdir -p /tmp/tpl
           unzip -qo /tmp/templates.tpz -d /tmp/tpl
-          mkdir -p "$HOME/.local/share/godot/export_templates/4.7.2.stable"
-          cp /tmp/tpl/templates/* "$HOME/.local/share/godot/export_templates/4.7.2.stable/"
-          ls "$HOME/.local/share/godot/export_templates/4.7.2.stable" | head -5
+          mkdir -p "$TEMPLATE_DIR"
+          for file in $NEEDED; do
+            cp "/tmp/tpl/templates/$file" "$TEMPLATE_DIR/$file"
+          done
+          ls "$TEMPLATE_DIR" | head -10
 
       - name: Import project
         run: godot --headless --import

docs/RELEASING.md

@@ -63,10 +63,11 @@ setup, so do not rely on it.
 > artifacts. If CI publishing fails again, run
 > `./tools/publish_release.sh <version>` from a checkout with `~/.git-credentials`.
 
-> **Godot cache:** the workflow uses Gitea Actions cache for the Godot binary and the
-> 4.7.2 export templates. The first run still downloads them; subsequent runs restore
-> from cache. If the host cache service is unavailable, remove the cache steps and
-> let the install steps download fresh copies.
+> **Godot cache:** the workflow uses Gitea Actions cache for the Godot binary and a
+> trimmed 4.7.2 export-template set (Linux/Windows/macOS/Web release files only, not
+> Android/iOS). The first run still downloads them; subsequent runs restore from cache.
+> If the host cache service is unavailable, remove the cache steps and let the install
+> steps download fresh copies.
 
 > The workflow lives in `.gitea/workflows/` (Gitea's canonical path). The old
 > `.github/workflows/ci.yml` was removed to avoid double runs on hosts that scan