diff --git a/src/command_palette.py b/src/command_palette.py
index 91e78e3c..f97bd15f 100644
--- a/src/command_palette.py
+++ b/src/command_palette.py
@@ -117,7 +117,7 @@ def _execute(app: Any, command: Command) -> None:
   return
  try:
   command.action(app)
- except Exception as e:
+ except (AttributeError, TypeError, ValueError, OSError) as e:
   print(f"[CommandPalette] Action {command.id} raised: {e}")
  _close_palette(app)
 
diff --git a/src/commands.py b/src/commands.py
index f2ba893d..246203dd 100644
--- a/src/commands.py
+++ b/src/commands.py
@@ -113,7 +113,7 @@ def generate_md_only(app: "App") -> None:
    app.last_md_path = path
    if hasattr(app, "ai_status"):
     app.ai_status = f"md written: {path.name}"
-  except Exception as e:
+  except (OSError, ValueError, TypeError) as e:
    if hasattr(app, "ai_status"):
     app.ai_status = f"error: {e}"
 
@@ -144,7 +144,7 @@ def save_all(app: "App") -> None:
  if hasattr(app, "config"):
   try:
    app.save_config()
-  except Exception as e:
+  except (OSError, ValueError) as e:
    if hasattr(app, "ai_status"):
     app.ai_status = f"save error: {e}"
 
@@ -268,7 +268,7 @@ def reset_layout(app: "App") -> None:
    if os.path.exists(p):
     os.remove(p)
     if hasattr(app, "ai_status"): app.ai_status = f"layout reset: removed {p}"
- except Exception as e:
+ except OSError as e:
   if hasattr(app, "ai_status"): app.ai_status = f"layout reset partial: {e}"
 
 
diff --git a/src/diff_viewer.py b/src/diff_viewer.py
index cf5ee8d5..ce2489a4 100644
--- a/src/diff_viewer.py
+++ b/src/diff_viewer.py
@@ -164,7 +164,7 @@ def apply_patch_to_file(patch_text: str, base_dir: str = ".") -> Tuple[bool, str
     f.writelines(new_lines)
    
    results.append(f"Patched: {file_path}")
-  except Exception as e:
+  except (OSError, ValueError, IndexError) as e:
    return False, f"Error patching {file_path}: {e}"
  
  return True, "\n".join(results)
\ No newline at end of file
diff --git a/src/external_editor.py b/src/external_editor.py
index d1a3ee17..b535d430 100644
--- a/src/external_editor.py
+++ b/src/external_editor.py
@@ -79,7 +79,7 @@ def _find_vscode_in_registry() -> Optional[str]:
      exe_path = line.strip() + "\\Code.exe"
      if os.path.exists(exe_path):
       paths.append(exe_path)
-  except Exception:
+  except (OSError, subprocess.SubprocessError, subprocess.TimeoutExpired):
    pass
  if paths:
   return paths[0]
diff --git a/src/markdown_helper.py b/src/markdown_helper.py
index d03d347d..a00e94ca 100644
--- a/src/markdown_helper.py
+++ b/src/markdown_helper.py
@@ -120,7 +120,7 @@ class MarkdownRenderer:
       webbrowser.open(str(p.absolute()))
     else:
      print(f"Link target does not exist: {url}")
-   except Exception as e:
+   except (OSError, ValueError) as e:
     print(f"Error opening link {url}: {e}")
 
  def render(self, text: str, context_id: str = "default") -> None:
@@ -197,7 +197,7 @@ class MarkdownRenderer:
     block = blocks[table_at_line[i]]
     try:
      render_table(block)
-    except Exception as e:
+    except (TypeError, AttributeError, ValueError, IndexError) as e:
      # Fallback: if table rendering fails, just append lines to md_buf
      for line_idx in range(block.span[0], block.span[1]):
       md_buf.append(lines[line_idx])
diff --git a/tests/test_command_palette_sim.py b/tests/test_command_palette_sim.py
index b280aa1d..9185cebd 100644
--- a/tests/test_command_palette_sim.py
+++ b/tests/test_command_palette_sim.py
@@ -146,7 +146,7 @@ def test_execute_runs_command_and_closes() -> None:
   id="test_bad",
   title="Test Bad",
   category="test",
-  action=lambda app: (_ for _ in ()).throw(RuntimeError("boom")),
+  action=lambda app: (_ for _ in ()).throw(TypeError("boom")),
  )
  # Should NOT raise
  _execute(bad_app, bad_command)