Pin Bun to 1.3.10 in CI and remove test:ci script

- Pin bun-version to 1.3.10 across all CI workflows to avoid
  mock.module() barrel export regression introduced in 1.3.11
- Remove test:ci script from package.json (use bun test directly)
- Update publish-workflow.test.ts to expect "bun test" instead

🤖 GENERATED WITH ASSISTANCE OF OhMyOpenCode

package.json

@@ -31,7 +31,6 @@
     "postinstall": "node postinstall.mjs",
     "prepublishOnly": "bun run clean && bun run build",
     "test:model-capabilities": "bun test src/shared/model-capability-aliases.test.ts src/shared/model-capability-guardrails.test.ts src/shared/model-capabilities.test.ts src/cli/doctor/checks/model-resolution.test.ts --bail",
-    "test:ci": "bun run script/run-ci-tests.ts",
     "typecheck": "tsc --noEmit",
     "test": "bun test"
   },