chore: consolidate to single ruff config in root pyproject.toml

- Merge web ruff settings (select E/F/I/UP, line-length 100) into root config
- Remove [tool.ruff] section from web/pyproject.toml
- Remove "web" from root ruff exclude list
- Simplify pre-commit hook to one command: ruff check .
- Update CI to use: uv run ruff check . (from repo root)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

extract/coffee_prices/src/coffee_prices/execute.py

@@ -15,8 +15,14 @@ import sys
 from pathlib import Path
 
 import yfinance as yf
-from extract_core import content_hash, end_run, landing_path, open_state_db, start_run
-from extract_core import write_bytes_atomic
+from extract_core import (
+    content_hash,
+    end_run,
+    landing_path,
+    open_state_db,
+    start_run,
+    write_bytes_atomic,
+)
 
 logging.basicConfig(
     level=logging.INFO,