Add .gitignore and commit pending changes

- Add comprehensive .gitignore for Python, Flask, IDE, and project-specific files
- Include test_optimizer.py
- Update Claude settings and windings preset configuration

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

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

presets/windings.json

@@ -5,8 +5,8 @@
         "name": "primary",
         "taps": [
           0,
-          25,
-          50
+          50,
+          25
         ],
         "awg": [
           20,
@@ -23,10 +23,10 @@
           50
         ],
         "awg": [
-          20,
           22,
-          28,
-          28
+          22,
+          22,
+          22
         ]
       }
     ]