Fix automated PR review model ID to claude-opus-4-6 (#23)

* Add automated design review GitHub Action

Adds a GitHub Action that automatically reviews system design documents
when a PR is opened or updated. Only triggers for PRs that modify .md
files in numbered design folders (e.g., "15. Design Google Maps/").

Uses Claude API with the SweetCodey review guidelines to post
line-specific comments on the PR.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* Use claude-opus-4-0 model for design reviews

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* Fix model ID to claude-opus-4-6

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: SweetCodey <rohitjain3241@gmail.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: 3 people

.github/scripts/review_design.py

@@ -24,7 +24,7 @@
 DESIGN_FILES = os.environ["DESIGN_FILES"]  # comma-separated
 PR_HEAD_SHA = os.environ["PR_HEAD_SHA"]
 
-MODEL = "claude-sonnet-4-5-20250514"
+MODEL = "claude-opus-4-6"
 
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