ci(release): stop publishing the debug UF2 as a release download

The debug build (ENABLE_SERIAL=ON) compiles out tud_connect/disconnect and
enumerates as a serial console, not a working HID/audio bridge — an end user
who downloads it gets a non-functional dongle. Keep it buildable on demand
(-DENABLE_SERIAL=ON) and in build.yml PR CI for compile coverage, but don't
ship it on the public release page. Releases now upload the standard UF2 only.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.github/workflows/release.yml

@@ -93,16 +93,11 @@ jobs:
           mkdir -p artifacts
           cp build/standard/ds5-bridge-oled.uf2 "artifacts/ds5-bridge-oled-${{ github.event.release.tag_name }}.uf2"
 
-      - name: Build Debug firmware
+      # The debug build (ENABLE_SERIAL=ON) compiles out tud_connect/disconnect and
-        run: |
+      # comes up as a serial console rather than a working HID/audio bridge — a
-          cmake -S . -B build/debug -G Ninja \
+      # developer diagnostic, not an end-user UF2. It is NOT published as a release
-            -DCMAKE_BUILD_TYPE=Release \
+      # download (footgun) — build it on demand with -DENABLE_SERIAL=ON, or use the
-            -DPICO_SDK_PATH="$PICO_SDK_PATH" \
+      # PR-CI compile in build.yml. See CHANGELOG/CLAUDE.md.
-            -DENABLE_SERIAL=ON \
-            -DENABLE_VERBOSE=ON \
-            -DVERSION="$FIRMWARE_VERSION"
-          cmake --build build/debug --target ds5-bridge
-          cp build/debug/ds5-bridge-oled.uf2 "artifacts/ds5-bridge-oled-debug-${{ github.event.release.tag_name }}.uf2"
 
       - name: Compute UF2 checksums + append to release notes
         env: