fix: use --model haiku alias instead of pinned model ID

Author: neuromechanist

.github/workflows/claude.yml

@@ -78,7 +78,7 @@ jobs:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           allowed_non_write_users: "*"
           claude_args: |
-            --model claude-haiku-4-5-20251001
+            --model haiku
 
   # Check new issues for duplicates
   deduplicate-issue:
@@ -138,4 +138,4 @@ jobs:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           allowed_non_write_users: "*"
           claude_args: |
-            --model claude-haiku-4-5-20251001
+            --model haiku