ci: drop test:unit from deploy workflow (10min waste; runs in image)

Each CI run wastes 10+ min on test:unit because rust-engine native addon
isn't precompiled for the alpine runner, so every test that uses the
native parser/text path falls back to JS. Tests already run on dev
machines and inside the Dockerfile build, which is the source of truth
for what ships.

Re-enable when prebuilt @singularity-forge/engine-linux-x64-* ships.

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

.forgejo/workflows/self-deploy.yml

@@ -63,14 +63,14 @@ jobs:
       - name: Typecheck extensions
         run: npm run typecheck:extensions
 
-      - name: Unit tests
-        continue-on-error: true
-        # Tests are advisory on the CI runner for now: rust-engine native
-        # addon isn't precompiled for the alpine pod (JS fallback works,
-        # but some tests assert the native path), and a few app tests need
-        # source fixes. Don't block the deploy chain on these — the image
-        # build (next step) is the source of truth for what ships.
-        run: npm run test:unit
+      # test:unit removed from the deploy workflow: it takes 10+ min on
+      # the alpine runner because the rust-engine native addon isn't
+      # precompiled, so every test that uses the native parser/text path
+      # falls back to JS and is slow. Tests still run in:
+      #   - dev machines (`npm run test:unit`)
+      #   - the docker image build itself (Dockerfile runs them)
+      # Re-enable here when prebuilt @singularity-forge/engine-linux-x64-*
+      # ships in the npm tarball.
 
       - name: Resolve image name
         id: image