fix(lint): auto-fix ruff violations and tune lint rules

- Auto-fixed 4,496 lint issues (import sorting, modern syntax, etc.)
- Added ignore rules for patterns intentional in this codebase:
  E402 (late imports), E712 (SQLAlchemy filters), B904 (raise from),
  SIM108/SIM105/SIM117 (readability preferences)
- Added per-file ignores for tests and scripts
- Excluded broken scripts/rename_terminology.py (has curly quotes)

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

scripts/validate/validators/base.py

@@ -220,9 +220,7 @@ class BaseValidator:
                 # Look for the function definition
                 for j in range(i + 1, min(i + 10, len(lines))):
                     next_line = lines[j].strip()
-                    if next_line.startswith("def ") or next_line.startswith(
-                        "async def "
-                    ):
+                    if next_line.startswith(("def ", "async def ")):
                         # Extract function name
                         match = re.search(r"(?:async\s+)?def\s+(\w+)", next_line)
                         if match: