fix(ci): handle non-zero exit codes in manifold-verify workflow

Two issues fixed:

1. Workflow bash -e flag: Changed shell from `bash -e {0}` to `bash {0}`
   so non-zero exit codes from `manifold verify` are properly captured
   instead of immediately terminating the script.

2. Glob pattern in artifact: Changed `install/lib/parallel/*.ts` to
   `install/lib/parallel/index.ts` since the CLI doesn't expand globs.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: dhanesh

.github/workflows/manifold-verify.yml

@@ -90,6 +90,7 @@ jobs:
 
       - name: Verify artifact coverage
         if: steps.check-manifold.outputs.found == 'true'
+        shell: bash {0}
         run: |
           EXIT_CODE=0
 

.manifold/parallel-agents.yaml

@@ -559,11 +559,11 @@ generation:
       status: generated
 
     # Distribution (iteration 8)
-    - path: install/lib/parallel/*.ts
+    - path: install/lib/parallel/index.ts
       type: distribution
       satisfies: [U1]
       status: generated
-      description: "Distributable parallel library (11 modules)"
+      description: "Distributable parallel library entry point (11 modules)"
     - path: install/hooks/auto-suggester.ts
       type: distribution
       satisfies: [B3, B4, U1, U4]