Fix CI lint failures — configure ruff rules for Python 3.9 compat

- Moved ruff select to [tool.ruff.lint] (new ruff config format)
- Removed UP rule group (requires Python 3.10+ syntax, breaks 3.9)
- Configured ignore list for style-preference rules (B904, SIM, etc.)
- All 600 tests passing, ruff clean, mypy clean

Author: Nuclear Marmalade

forge/cli.py

@@ -35,8 +35,11 @@
     __version__ = "1.0.0"
 
 # UI helpers (colors, progress bar, logging, messages) extracted to cli_helpers.py
-from forge.cli_helpers import (  # noqa: E402
-    setup_logging, die, warn, info,
+from forge.cli_helpers import (
+    die,
+    info,
+    setup_logging,
+    warn,
 )
 
 # Re-export color functions that read _COLOR_ENABLED from this module
@@ -481,8 +484,9 @@ def cmd_dashboard(args: argparse.Namespace) -> None:
     info("  Press Ctrl+C to stop.\n")
 
     try:
-        from forge.dashboard.app import app
         import uvicorn
+
+        from forge.dashboard.app import app
         uvicorn.run(app, host="127.0.0.1", port=port)
     except ImportError as e:
         die(

forge/cli_enrich.py

@@ -17,7 +17,7 @@
 from pathlib import Path
 from typing import Any
 
-from forge.cli_helpers import die, warn, info, green, bold, dim
+from forge.cli_helpers import bold, die, dim, green, info, warn
 
 try:
     from forge import __version__

forge/cli_helpers.py

@@ -12,7 +12,6 @@
 import time
 from typing import NoReturn, Optional
 
-
 # ---------------------------------------------------------------------------
 # ANSI color helpers
 # ---------------------------------------------------------------------------

forge/dashboard/app.py

@@ -173,9 +173,9 @@ def _init_enrichment(mode: str, workers: int) -> tuple:
 
 def _run_enrichment_loop(db, mode: str, workers: int, total: int) -> None:
     """Build the pipeline and run enrichment."""
+    from forge.adapters.ollama import OllamaAdapter
     from forge.enrichment.pipeline import EnrichmentPipeline
     from forge.tools.database import DatabasePool
-    from forge.adapters.ollama import OllamaAdapter
 
     config = _get_config()
     pool = DatabasePool(db=db)

forge/db.py

@@ -19,17 +19,16 @@
 logger = logging.getLogger("forge.db")
 
 # Schema definitions and backend classes live in db_schema.py
+from forge.db_io import _ForgeDBIOMixin  # noqa: E402
 from forge.db_schema import (  # noqa: E402
+    BOOLEAN_COLUMNS,
     BUSINESS_COLUMNS,
     BUSINESS_INDEXES,
     ENRICHABLE_FIELDS,
     JSON_COLUMNS,
-    BOOLEAN_COLUMNS,
-    _SQLiteBackend,
     _PostgresBackend,
+    _SQLiteBackend,
 )
-from forge.db_io import _ForgeDBIOMixin  # noqa: E402
-
 
 # ── Main Interface ───────────────────────────────────────────────────────────
 
@@ -744,4 +743,4 @@ def _prepare_value_for_write(self, column: str, value: Any) -> Any:
 
 
 # _Transaction class is in db_schema.py but imported here for internal use
-from forge.db_schema import _Transaction  # noqa: E402, F811
+from forge.db_schema import _Transaction  # noqa: E402

forge/db_io.py

@@ -12,7 +12,7 @@
 import logging
 import os
 import uuid
-from typing import Any, Dict, List, Optional, Sequence, TYPE_CHECKING
+from typing import TYPE_CHECKING, Any, Dict, List, Optional, Sequence
 
 from forge.db_schema import ENRICHABLE_FIELDS, JSON_COLUMNS
 

forge/db_schema.py

@@ -192,8 +192,8 @@ class _PostgresBackend:
     def __init__(self, host: str, port: int, user: str, password: str,
                  dbname: str, min_connections: int = 2, max_connections: int = 10):
         import psycopg2
-        import psycopg2.pool
         import psycopg2.extras
+        import psycopg2.pool
         self._pool = psycopg2.pool.ThreadedConnectionPool(
             min_connections, max_connections,
             host=host, port=port, user=user, password=password,

forge/discovery/overture.py

@@ -281,7 +281,7 @@ def _format_results(rows: list, columns: list) -> List[dict]:
         for row in rows:
             record = dict(zip(columns, row))
             raw_cat = record.get("category") or ""
-            record["forge_industry"] = _CATEGORY_TO_INDUSTRY.get(raw_cat.lower(), None)
+            record["forge_industry"] = _CATEGORY_TO_INDUSTRY.get(raw_cat.lower())
             results.append(record)
         return results
 

forge/enrichment/pipeline.py

@@ -36,13 +36,13 @@
 import asyncio
 import json
 import logging
-import time
 import threading
+import time
 from dataclasses import dataclass
 from typing import Any, Dict, List, Optional
 
-from forge.tools.web_scraper import AsyncWebScraper
 from forge.core.output_parser import extract_json_from_response
+from forge.tools.web_scraper import AsyncWebScraper
 
 logger = logging.getLogger("forge.enrichment")
 

forge/enrichment/prompts.py

@@ -14,7 +14,6 @@
 
 from typing import Dict
 
-
 # ── Industry whitelist ───────────────────────────────────────────────────────
 
 INDUSTRY_LIST = (