fix: exclude _generated.py from black pre-commit hook

The schema validation CI was failing because pre-commit's black hook was
reformatting the generated _generated.py file, splitting single-line imports
into multi-line format.

The file was already excluded in pyproject.toml but pre-commit hooks need
their own exclude patterns. Added explicit exclude pattern to prevent black
from reformatting this auto-generated file.

Also updated consolidate_exports.py to attempt running black (for local
development) but this is now a no-op since black is configured to skip the file.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: bokelley

.pre-commit-config.yaml

@@ -10,6 +10,7 @@ repos:
       - id: black
         language_version: python3.11
         args: [--line-length=100]
+        exclude: ^src/adcp/types/_generated\.py$
 
   # Ruff linting (ignoring line-length for now - black handles it)
   - repo: https://github.com/astral-sh/ruff-pre-commit

scripts/consolidate_exports.py

@@ -9,6 +9,8 @@
 from __future__ import annotations
 
 import ast
+import subprocess
+import sys
 from datetime import datetime, timezone
 from pathlib import Path
 
@@ -257,6 +259,22 @@ def main():
     print(f"\nWriting {OUTPUT_FILE}...")
     OUTPUT_FILE.write_text(content)
 
+    # Run black to format the generated file
+    print("Formatting with black...")
+    try:
+        result = subprocess.run(
+            [sys.executable, "-m", "black", str(OUTPUT_FILE), "--quiet"],
+            capture_output=True,
+            text=True,
+            check=False,
+        )
+        if result.returncode == 0:
+            print("✓ Formatted with black")
+        else:
+            print(f"⚠ Black formatting had issues: {result.stderr}")
+    except Exception as e:
+        print(f"⚠ Could not run black (not critical): {e}")
+
     print("✓ Successfully generated consolidated exports")
     export_count = len(
         [