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

Makefile

@@ -0,0 +1,40 @@
+.PHONY: help install test lint format clean run dry-run
+
+help:
+	@echo "LBRY Downloader - Available commands:"
+	@echo "  make install    - Install dependencies"
+	@echo "  make test       - Run tests"
+	@echo "  make lint       - Run linting (if configured)"
+	@echo "  make format     - Format code (if configured)"
+	@echo "  make clean      - Clean generated files"
+	@echo "  make run        - Run the downloader"
+	@echo "  make dry-run    - Run in dry-run mode"
+
+install:
+	pip install -r requirements.txt
+	@echo "Dependencies installed"
+
+test:
+	python3 -m pytest tests/ -v
+
+lint:
+	@echo "Linting not configured. Add ruff or flake8 to requirements.txt"
+	@echo "and configure this target."
+
+format:
+	@echo "Formatting not configured. Add ruff or black to requirements.txt"
+	@echo "and configure this target."
+
+clean:
+	find . -type d -name __pycache__ -exec rm -rf {} + 2>/dev/null || true
+	find . -type f -name "*.pyc" -delete
+	find . -type f -name "*.pyo" -delete
+	find . -type d -name "*.egg-info" -exec rm -rf {} + 2>/dev/null || true
+	find . -type d -name .pytest_cache -exec rm -rf {} + 2>/dev/null || true
+	rm -rf build/ dist/ .coverage htmlcov/
+
+run:
+	python3 main.py
+
+dry-run:
+	python3 main.py --dry-run