Squashed commit of the following:

commit 1eeea9f83ad9230a5c1f7a75662770eaab0df837
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 21:15:41 2025 +0200

    Disable resuming of old time entries.

commit 3e3ec2f01cb7943622b819a19179388078ae1315
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 20:59:19 2025 +0200

    Refactor db migrations.

commit 15a51a569da36c6b7c9e01ab17b6fdbdee6ad994
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 19:58:04 2025 +0200

    Apply new style for Time Tracking view.

commit 77e5278b303e060d2b03853b06277f8aa567ae68
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 18:06:04 2025 +0200

    Allow direct registrations as a Company.

commit 188a8772757cbef374243d3a5f29e4440ddecabe
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 18:04:45 2025 +0200

    Add email invitation feature.

commit d9ebaa02aa01b518960a20dccdd5a327d82f30c6
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 17:12:32 2025 +0200

    Apply common style for Company, User, Team management pages.

commit 81149caf4d8fc6317e2ab1b4f022b32fc5aa6d22
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 16:44:32 2025 +0200

    Move export functions to own module.

commit 1a26e19338e73f8849c671471dd15cc3c1b1fe82
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 15:51:15 2025 +0200

    Split up models.py.

commit 61f1ccd10f721b0ff4dc1eccf30c7a1ee13f204d
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 12:05:28 2025 +0200

    Move utility function into own modules.

commit 84b341ed35e2c5387819a8b9f9d41eca900ae79f
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 11:44:24 2025 +0200

    Refactor auth functions use.

commit 923e311e3da5b26d85845c2832b73b7b17c48adb
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 11:35:52 2025 +0200

    Refactor route nameing and fix bugs along the way.

commit f0a5c4419c340e62a2615c60b2a9de28204d2995
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 10:34:33 2025 +0200

    Fix URL endpoints in announcement template.

commit b74d74542a1c8dc350749e4788a9464d067a88b5
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 09:25:53 2025 +0200

    Move announcements to own module.

commit 9563a28021ac46c82c04fe4649b394dbf96f92c7
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 09:16:30 2025 +0200

    Combine Company view and edit templates.

commit 6687c373e681d54e4deab6b2582fed5cea9aadf6
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 08:17:42 2025 +0200

    Move Users, Company and System Administration to own modules.

commit 8b7894a2e3eb84bb059f546648b6b9536fea724e
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 07:40:57 2025 +0200

    Move Teams and Projects to own modules.

commit d11bf059d99839ecf1f5d7020b8c8c8a2454c00b
Author: Jens Luedicke <jens@luedicke.me>
Date:   Mon Jul 7 07:09:33 2025 +0200

    Move Tasks and Sprints to own modules.

migrations/old_migrations/00_migration_summary.py

@@ -0,0 +1,79 @@
+#!/usr/bin/env python3
+"""
+Summary of all model migrations to be performed
+"""
+
+import os
+from pathlib import Path
+
+def print_section(title, items):
+    """Print a formatted section"""
+    print(f"\n{'='*60}")
+    print(f"📌 {title}")
+    print('='*60)
+    for item in items:
+        print(f"  {item}")
+
+def main():
+    print("🔍 Model Migration Summary")
+    print("="*60)
+    print("\nThis will update your codebase to match the refactored models.")
+    
+    # CompanyWorkConfig changes
+    print_section("CompanyWorkConfig Field Changes", [
+        "✓ work_hours_per_day → standard_hours_per_day",
+        "✓ mandatory_break_minutes → break_duration_minutes", 
+        "✓ break_threshold_hours → break_after_hours",
+        "✓ region → work_region",
+        "✗ REMOVED: additional_break_minutes",
+        "✗ REMOVED: additional_break_threshold_hours",
+        "✗ REMOVED: region_name (use work_region.value)",
+        "✗ REMOVED: created_by_id",
+        "+ ADDED: standard_hours_per_week, overtime_enabled, overtime_rate, etc."
+    ])
+    
+    # TaskStatus changes
+    print_section("TaskStatus Enum Changes", [
+        "✓ NOT_STARTED → TODO",
+        "✓ COMPLETED → DONE",
+        "✓ ON_HOLD → IN_REVIEW",
+        "+ KEPT: ARCHIVED (separate from CANCELLED)"
+    ])
+    
+    # WorkRegion changes
+    print_section("WorkRegion Enum Changes", [
+        "✓ UNITED_STATES → USA",
+        "✓ UNITED_KINGDOM → UK", 
+        "✓ FRANCE → EU",
+        "✓ EUROPEAN_UNION → EU",
+        "✓ CUSTOM → OTHER",
+        "! KEPT: GERMANY (specific labor laws)"
+    ])
+    
+    # Files to be modified
+    print_section("Files That Will Be Modified", [
+        "Python files: app.py, routes/*.py",
+        "Templates: admin_company.html, admin_work_policies.html, config.html",
+        "JavaScript: static/js/*.js (for task status)",
+        "Removed field references will be commented out"
+    ])
+    
+    # Safety notes
+    print_section("⚠️  Important Notes", [
+        "BACKUP your code before running migrations",
+        "Removed fields will be commented with # REMOVED:",
+        "Review all changes after migration",
+        "Test thoroughly, especially:",
+        "  - Company work policy configuration",
+        "  - Task status transitions",
+        "  - Regional preset selection",
+        "Consider implementing audit logging for created_by tracking"
+    ])
+    
+    print("\n" + "="*60)
+    print("🎯 To run all migrations: python migrations/run_all_migrations.py")
+    print("🎯 To run individually: python migrations/01_fix_company_work_config_usage.py")
+    print("="*60)
+
+if __name__ == "__main__":
+    main()