fix: handle missing config file gracefully

The CLI previously crashed with FileNotFoundError when
~/.config/task-cli/config.yaml did not exist.

Changes:
- load_config() now creates the config directory and a default
  config file on first run
- Added .gitignore for Python cache files
- Added tests for missing config scenarios:
  - test_load_config_creates_default_when_missing
  - test_load_config_reads_existing_file
  - test_load_config_handles_missing_entire_config_dir

All existing tests continue to pass.

Author: DrGalio

.gitignore

@@ -0,0 +1,3 @@
+__pycache__/
+.pytest_cache/
+*.pyc

task.py

@@ -10,10 +10,29 @@
 from commands.done import mark_done
 
 
+DEFAULT_CONFIG = """# Default configuration for task CLI
+storage:
+  format: json
+  max_tasks: 1000
+display:
+  color: true
+  unicode: true
+"""
+
+
 def load_config():
-    """Load configuration from file."""
-    config_path = Path.home() / ".config" / "task-cli" / "config.yaml"
-    # NOTE: This will crash if config doesn't exist - known bug for bounty testing
+    """Load configuration from file.
+
+    Creates a default config if the file doesn't exist so the CLI
+    never crashes on first run.
+    """
+    config_dir = Path.home() / ".config" / "task-cli"
+    config_path = config_dir / "config.yaml"
+
+    if not config_path.exists():
+        config_dir.mkdir(parents=True, exist_ok=True)
+        config_path.write_text(DEFAULT_CONFIG)
+
     with open(config_path) as f:
         return f.read()
 

test_task.py

@@ -1,10 +1,13 @@
 """Basic tests for task CLI."""
 
 import json
+import os
+import shutil
 import pytest
 from pathlib import Path
 from commands.add import add_task, validate_description
 from commands.done import validate_task_id
+from task import load_config, DEFAULT_CONFIG
 
 
 def test_validate_description():
@@ -28,3 +31,49 @@ def test_validate_task_id():
 
     with pytest.raises(ValueError):
         validate_task_id(tasks, 99)
+
+
+def test_load_config_creates_default_when_missing(tmp_path, monkeypatch):
+    """Test that load_config creates a default config when file is missing."""
+    fake_home = tmp_path / "home"
+    fake_home.mkdir()
+    monkeypatch.setattr(Path, "home", lambda: fake_home)
+
+    config_dir = fake_home / ".config" / "task-cli"
+    config_path = config_dir / "config.yaml"
+
+    # Ensure it doesn't exist before
+    assert not config_path.exists()
+
+    result = load_config()
+
+    # Should not crash and should return the default config
+    assert result == DEFAULT_CONFIG
+    # Should have created the file
+    assert config_path.exists()
+    assert "format: json" in config_path.read_text()
+
+
+def test_load_config_reads_existing_file(tmp_path, monkeypatch):
+    """Test that load_config reads an existing config file."""
+    fake_home = tmp_path / "home"
+    config_dir = fake_home / ".config" / "task-cli"
+    config_dir.mkdir(parents=True)
+    config_path = config_dir / "config.yaml"
+    config_path.write_text("custom: true\n")
+
+    monkeypatch.setattr(Path, "home", lambda: fake_home)
+
+    result = load_config()
+    assert "custom: true" in result
+
+
+def test_load_config_handles_missing_entire_config_dir(tmp_path, monkeypatch):
+    """Test that load_config works when the entire .config/task-cli dir is missing."""
+    fake_home = tmp_path / "empty_home"
+    fake_home.mkdir()
+    monkeypatch.setattr(Path, "home", lambda: fake_home)
+
+    result = load_config()
+    assert result == DEFAULT_CONFIG
+    assert (fake_home / ".config" / "task-cli" / "config.yaml").exists()