Complete LBRY Downloader implementation v1.0.0

Features:
- Incremental sync with version tracking (sd_hash)
- Per-channel download paths
- Download limit (default: 10 most recent per channel)
- Interactive setup script with user prompts
- Uninstall script for clean removal
- Comprehensive test suite (42 tests)
- Full documentation suite

Files:
- 9 Python core modules (main, models, utils, config, client, state, planner, downloader, init)
- 3 Setup scripts (setup.py, uninstall.py, install.sh)
- 5 Test files (42 tests, all passing)
- 9 Documentation files
- 4 Build/config files

Total: 31 files, ~4,500 lines

init.py

@@ -0,0 +1,64 @@
+#!/usr/bin/env python3
+"""
+Initialize LBRY Downloader configuration.
+
+This script creates the initial configuration file and directory structure.
+"""
+
+import sys
+from pathlib import Path
+
+from config_loader import create_default_config, ensure_directories
+from models import Config, GeneralConfig, LbrynetConfig
+from utils import expand_path
+
+
+def main():
+    print("LBRY Downloader - Initialization")
+    print("=" * 40)
+
+    # Default paths
+    base_dir = expand_path("~/Documents/lbry-downloads")
+    config_file = base_dir / "config.yaml"
+
+    # Check if already exists
+    if config_file.exists():
+        print(f"\nConfiguration already exists at: {config_file}")
+        response = input("Overwrite? (y/N): ").strip().lower()
+        if response != "y":
+            print("Aborted.")
+            sys.exit(0)
+
+    # Create default config
+    config_content = create_default_config()
+
+    # Create directories
+    base_dir.mkdir(parents=True, exist_ok=True)
+    (base_dir / "state").mkdir(exist_ok=True)
+    (base_dir / "channels").mkdir(exist_ok=True)
+
+    # Write config
+    with open(config_file, "w") as f:
+        f.write(config_content)
+
+    print(f"\n✓ Created configuration: {config_file}")
+    print(f"✓ Created directories:")
+    print(f"  - {base_dir}")
+    print(f"  - {base_dir / 'state'}")
+    print(f"  - {base_dir / 'channels'}")
+
+    print("\n" + "=" * 40)
+    print("Next steps:")
+    print("1. Edit the configuration file to add your channels")
+    print(f"   nano {config_file}")
+    print("\n2. Ensure lbrynet daemon is running:")
+    print("   lbrynet start")
+    print("\n3. Run the downloader:")
+    print("   python main.py")
+    print("\n4. Or test first with dry-run:")
+    print("   python main.py --dry-run")
+    print("=" * 40)
+
+
+if __name__ == "__main__":
+    main()