feat: upgrade Claude GHA to Opus 4.6

Author: KRRT7

.github/workflows/claude.yml

@@ -173,7 +173,7 @@ jobs:
             2. For each optimization PR:
                - Check if CI is passing: `gh pr checks <number>`
                - If all checks pass, merge it: `gh pr merge <number> --squash --delete-branch`
-          claude_args: '--allowedTools "mcp__github_inline_comment__create_inline_comment,Bash(gh pr comment:*),Bash(gh pr diff:*),Bash(gh pr view:*),Bash(gh pr list:*),Bash(gh pr checks:*),Bash(gh pr merge:*),Bash(gh issue view:*),Bash(gh issue list:*),Bash(gh api:*),Bash(uv run prek *),Bash(uv run mypy *),Bash(uv run coverage *),Bash(uv run pytest *),Bash(git status*),Bash(git add *),Bash(git commit *),Bash(git push*),Bash(git diff *),Bash(git checkout *),Read,Glob,Grep,Edit"'
+          claude_args: '--model claude-opus-4-6 --allowedTools "mcp__github_inline_comment__create_inline_comment,Bash(gh pr comment:*),Bash(gh pr diff:*),Bash(gh pr view:*),Bash(gh pr list:*),Bash(gh pr checks:*),Bash(gh pr merge:*),Bash(gh issue view:*),Bash(gh issue list:*),Bash(gh api:*),Bash(uv run prek *),Bash(uv run mypy *),Bash(uv run coverage *),Bash(uv run pytest *),Bash(git status*),Bash(git add *),Bash(git commit *),Bash(git push*),Bash(git diff *),Bash(git checkout *),Read,Glob,Grep,Edit"'
           additional_permissions: |
             actions: read
         env:
@@ -245,7 +245,7 @@ jobs:
         uses: anthropics/claude-code-action@v1
         with:
           use_foundry: "true"
-          claude_args: '--allowedTools "Read,Edit,Write,Glob,Grep,Bash(git status*),Bash(git diff*),Bash(git add *),Bash(git commit *),Bash(git push*),Bash(git log*),Bash(git merge*),Bash(git fetch*),Bash(git checkout*),Bash(git branch*),Bash(uv run prek *),Bash(prek *),Bash(uv run ruff *),Bash(uv run pytest *),Bash(uv run mypy *),Bash(uv run coverage *),Bash(gh pr comment*),Bash(gh pr view*),Bash(gh pr diff*),Bash(gh pr merge*),Bash(gh pr close*)"'
+          claude_args: '--model claude-opus-4-6 --allowedTools "Read,Edit,Write,Glob,Grep,Bash(git status*),Bash(git diff*),Bash(git add *),Bash(git commit *),Bash(git push*),Bash(git log*),Bash(git merge*),Bash(git fetch*),Bash(git checkout*),Bash(git branch*),Bash(uv run prek *),Bash(prek *),Bash(uv run ruff *),Bash(uv run pytest *),Bash(uv run mypy *),Bash(uv run coverage *),Bash(gh pr comment*),Bash(gh pr view*),Bash(gh pr diff*),Bash(gh pr merge*),Bash(gh pr close*)"'
           additional_permissions: |
             actions: read
         env: