Merge pull request #8520 from Shopify/pin-claude-workflow-model

Use the latest Opus model in automation workflows

Author: gonzaloriestra

.github/workflows/gardener-investigate-issue.yml

@@ -86,6 +86,7 @@ jobs:
             Always return an investigation report as the `report` field in your structured output.
             If you identify a straightforward fix, describe the proposed fix in the report instead of implementing it.
           claude_args: |
+            --model claude-opus-latest
             --json-schema '{"type":"object","properties":{"report":{"type":"string","description":"The full investigation report markdown"}},"required":["report"]}'
 
       - name: Write report to job summary

.github/workflows/maintenance-prs.yml

@@ -99,6 +99,7 @@ jobs:
             Keep duplicate-check notes out of the PR body and all template checkboxes unchecked.
             Do not post to Slack; the workflow will announce the PR after it exists.
           claude_args: |
+            --model claude-opus-latest
             --allowedTools Read,Glob,Grep,Edit,Write,Bash
 
       - name: Find the created PR