Fall back to the pure-node CLI so check 19 degrades to a visible skip

The native package resolves as an optional dependency and did not arrive on the
runner, so asserting `claude --version` turned a missing optional download into
a red build over something this repo does not control.

The package ships a documented pure-node fallback for this case. Use it when the
native binary is absent, and report rather than fail if even that is unavailable:
check 19 runs its own two-way control and skips with a reason when the validator
cannot be trusted, so the gate output says plainly that the manifests went
unvalidated on this run instead of implying they passed.

Author: itsvedantkumar

.github/workflows/verify.yml

@@ -30,9 +30,20 @@ jobs:
       # later as a check that silently measures nothing.
       - name: Install Claude Code CLI
         run: |
-          npm install -g @anthropic-ai/claude-code
-          node "$(npm root -g)/@anthropic-ai/claude-code/install.cjs" || true
-          claude --version
+          npm install -g @anthropic-ai/claude-code || true
+          root="$(npm root -g)/@anthropic-ai/claude-code"
+          node "$root/install.cjs" || true
+          # The native package resolves as an optional dependency and does not always arrive on
+          # a runner. The package ships a documented pure-node fallback for exactly this, so
+          # prefer it over failing the job: put a shim ahead of the shim.
+          if ! claude --version >/dev/null 2>&1 && [ -f "$root/cli-wrapper.cjs" ]; then
+            printf '#!/bin/sh\nexec node "%s/cli-wrapper.cjs" "$@"\n' "$root" | sudo tee /usr/local/bin/claude >/dev/null
+            sudo chmod +x /usr/local/bin/claude
+          fi
+          # Report, do not fail. Check 19 runs its own control and skips with a reason when the
+          # validator is unusable, so an unavailable CLI degrades to a visible skip in the gate
+          # output rather than a red run over something this repo does not control.
+          claude --version || echo "::warning::claude CLI unusable on this runner; check 19 will skip"
 
       - name: Run the verification gate
         run: ./.claude/verify.sh