Improve coding agent reliability

src/lai_automation/agent.py

@@ -2,6 +2,7 @@ from __future__ import annotations
 
 import os
 import pwd
+import shutil
 import subprocess
 from pathlib import Path
 
@@ -18,6 +19,13 @@ class AiderAgent:
         task_file.chmod(0o600)
         command = self.command(task_file)
         coder = pwd.getpwnam("coder")
+        git_config = Path(coder.pw_dir) / ".gitconfig"
+        git_config.write_text(
+            "[user]\n\tname = LAI Automation Coder\n\temail = coder@localhost\n"
+            f"[safe]\n\tdirectory = {workspace.resolve()}\n"
+        )
+        git_config.chmod(0o600)
+        os.chown(git_config, coder.pw_uid, coder.pw_gid)
         os.chown(task_file, coder.pw_uid, coder.pw_gid)
         for path in workspace.rglob("*"):
             if ".git" not in path.parts:
@@ -49,6 +57,9 @@ class AiderAgent:
                 timeout=900,
             )
         finally:
+            shutil.rmtree(workspace / ".aider.tags.cache.v4", ignore_errors=True)
+            for artifact in (".aider.chat.history.md", ".aider.input.history"):
+                (workspace / artifact).unlink(missing_ok=True)
             os.chown(workspace, 0, coder.pw_gid, follow_symlinks=False)
             workspace.chmod(0o775)
         if result.returncode != 0:
@@ -72,4 +83,8 @@ class AiderAgent:
             "--input-history-file",
             "/dev/null",
             "--no-analytics",
+            "--edit-format",
+            "diff",
+            "--timeout",
+            "60",
         ]