fix: change rigging decorator agent to o3-mini (#18)

Author: GangGreenTemperTatum

.hooks/generate_pr_description.py

@@ -66,7 +66,7 @@ def get_diff(base_ref: str, source_ref: str, *, exclude: list[str] | None = None
 def main(
     base_ref: str = "origin/main",
     source_ref: str = "HEAD",
-    generator_id: str = "groq/meta-llama/llama-4-scout-17b-16e-instruct",
+    generator_id: str = "o3-mini",
     max_diff_lines: int = 1000,
     exclude: list[str] | None = None,
 ) -> None: