refactor(infra): cull unused infrastructure and file cache helpers

src/external_editor.py

@@ -140,17 +140,6 @@ def get_default_launcher() -> ExternalEditorLauncher:
     return launcher
 
 
-def resolve_project_editor_override(project_path: Optional[str]) -> Optional[str]:
-    if not project_path:
-        return None
-    from src import models
-    try:
-        proj = models.load_project(project_path)
-        return proj.get("default_editor")
-    except Exception:
-        return None
-
-
 def create_temp_modified_file(content: str) -> str:
     """
     [C: src/gui_2.py:App._open_patch_in_external_editor, tests/test_external_editor.py:TestHelperFunctions.test_create_temp_modified_file]

src/file_cache.py

@@ -704,15 +704,6 @@ class ASTParser:
 def reset_client() -> None:
  pass
 
-def content_block_type(path: Path) -> str:
- return "unsupported"
-
 def get_file_id(path: Path) -> Optional[str]:
  return None
 
-def evict(path: Path) -> None:
- pass
-
-def list_cached() -> List[Dict[str, Any]]:
- return []
-

src/project_manager.py

@@ -87,15 +87,6 @@ def get_git_commit(git_dir: str) -> str:
  except Exception:
   return ""
 
-def get_git_log(git_dir: str, n: int = 5) -> str:
- try:
-  r = subprocess.run(
-   ["git", "log", "--oneline", f"-{n}"],
-   capture_output=True, text=True, cwd=git_dir, timeout=5,
-  )
-  return r.stdout.strip() if r.returncode == 0 else ""
- except Exception:
-  return ""
   # ── default structures ───────────────────────────────────────────────────────
 
 def default_discussion() -> dict[str, Any]:

tests/test_external_editor.py

@@ -5,7 +5,6 @@ from src.models import TextEditorConfig, ExternalEditorConfig
 from src.external_editor import (
     ExternalEditorLauncher,
     get_default_launcher,
-    resolve_project_editor_override,
     create_temp_modified_file,
 )