Make code review agent aware of the current date

bugbug/tools/code_review/agent.py

@@ -7,7 +7,7 @@
 
 import json
 import os
-from datetime import datetime
+from datetime import UTC, datetime
 from logging import getLogger
 from typing import Optional
 
@@ -61,6 +61,10 @@
 logger = getLogger(__name__)
 
 
+def current_date_for_prompt() -> str:
+    return datetime.now(UTC).date().isoformat()
+
+
 class CodeReviewTool(GenerativeModelTool):
     version = 2
 
@@ -209,6 +213,7 @@ def generate_initial_prompt(
         created_before = patch.date_created if self.is_experiment_env else None
 
         return FIRST_MESSAGE_TEMPLATE.format(
+            current_date=current_date_for_prompt(),
             patch=format_patch_set(patch.patch_set),
             patch_summarization=patch_summary,
             external_context=external_context,

bugbug/tools/code_review/prompts.py

@@ -89,7 +89,9 @@
 """
 
 
-FIRST_MESSAGE_TEMPLATE = """Here is a summary of the patch:
+FIRST_MESSAGE_TEMPLATE = """Current date: {current_date}
+
+Here is a summary of the patch:
 
 <patch_summary>
 {patch_summarization}