fix(src): commit migration files to prevent InconsistentMigrationHistory

Remove src/*/migrations/ from .gitignore and commit all generated
migration files. The admin.0001_initial migration uses
swappable_dependency(AUTH_USER_MODEL) which requires accounts.0001_initial
to exist before admin migrations can be applied. Without committed migration
files, running migrate before makemigrations causes admin to apply first
(since accounts appears to have no migrations), leading to an
InconsistentMigrationHistory error when makemigrations is run later.

This follows Django's recommended workflow of committing migrations.

src/notes/migrations/0001_initial.py

@@ -0,0 +1,37 @@
+# Generated by Django 6.0.6 on 2026-06-28 12:27
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('projects', '0001_initial'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='ProjectNote',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=255)),
+                ('content', models.TextField(blank=True, null=True)),
+                ('note_date', models.DateField()),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('created_by', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='project_notes', to=settings.AUTH_USER_MODEL)),
+                ('project', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='notes', to='projects.project')),
+            ],
+            options={
+                'verbose_name': 'Project Note',
+                'verbose_name_plural': 'Project Notes',
+                'db_table': 'project_notes',
+                'indexes': [models.Index(fields=['project', 'note_date'], name='project_not_project_833ff9_idx')],
+            },
+        ),
+    ]