Presubmit fixes

Author: AmPaschal

agent/coverage_analyzer.py

@@ -49,11 +49,9 @@ def _initial_prompt(self, results: list[Result]) -> Prompt:
     function_requirements = self.get_function_requirements()
 
     builder = CoverageAnalyzerTemplateBuilder(self.llm, benchmark, last_result)
+    tool_guides = f'{self.inspect_tool.tutorial()}\n\n{self.coverage_tool.tutorial()}'
     prompt = builder.build(example_pair=[],
-                           tool_guides=[
-                               self.inspect_tool.tutorial(),
-                               self.coverage_tool.tutorial()
-                           ],
+                           tool_guides=tool_guides,
                            project_dir=self.inspect_tool.project_dir,
                            function_requirements=function_requirements)
     # TODO: A different file name/dir.

llm_toolkit/prompt_builder.py

@@ -691,7 +691,7 @@ def build(self,
             example_pair: list[list[str]],
             project_example_content: Optional[list[list[str]]] = None,
             project_context_content: Optional[dict] = None,
-            tool_guides: list[str] = [],
+            tool_guides: str = '',
             project_dir: str = '',
             function_requirements: str = '') -> prompts.Prompt:
     """Constructs a prompt using the templates in |self| and saves it."""
@@ -707,7 +707,7 @@ def build(self,
     prompt = prompt.replace('{FUNCTION_SIGNATURE}',
                             self.benchmark.function_signature)
     prompt = prompt.replace('{FUZZ_TARGET}', self.run_result.fuzz_target_source)
-    prompt = prompt.replace('{TOOL_GUIDES}', '\n'.join(tool_guides))
+    prompt = prompt.replace('{TOOL_GUIDES}', tool_guides)
     prompt = prompt.replace('{FUZZING_LOG}', self.run_result.run_log)
     prompt = prompt.replace('{FUNCTION_REQUIREMENTS}', function_requirements)