feat: send coverage info to test review endpoint

Include coverage percentage in the review request so the AI reviewer
can flag tests with low coverage that don't exercise the function.

Author: KRRT7

codeflash/api/aiservice.py

@@ -775,9 +775,10 @@ def review_generated_tests(
         function_source_code: str,
         function_name: str,
         trace_id: str,
+        coverage_summary: str = "",
         language: str = "python",
     ) -> list[TestFileReview]:
-        payload = {
+        payload: dict[str, Any] = {
             "tests": tests,
             "function_source_code": function_source_code,
             "function_name": function_name,
@@ -786,6 +787,8 @@ def review_generated_tests(
             "codeflash_version": codeflash_version,
             "call_sequence": self.get_next_sequence(),
         }
+        if coverage_summary:
+            payload["coverage_summary"] = coverage_summary
         try:
             response = self.make_ai_service_request("/testgen_review", payload=payload, timeout=self.timeout)
         except requests.exceptions.RequestException as e:

codeflash/optimization/function_optimizer.py

@@ -2030,13 +2030,18 @@ def review_and_repair_tests(
                     }
                 )
 
+            coverage_summary = ""
+            if coverage_results and coverage_results.coverage is not None:
+                coverage_summary = f"{coverage_results.coverage:.1f}%"
+
             console.rule()
             with progress_bar("Reviewing generated tests for quality issues..."):
                 review_results = self.aiservice_client.review_generated_tests(
                     tests=tests_for_review,
                     function_source_code=self.function_to_optimize_source_code,
                     function_name=self.function_to_optimize.function_name,
                     trace_id=self.function_trace_id,
+                    coverage_summary=coverage_summary,
                     language=self.function_to_optimize.language,
                 )