Initial commit: Flask calorie counter app setup

Add base Flask application with user authentication, SQLAlchemy models for users, units, and food items, admin blueprint, and basic templates. Includes database migration setup, login form, and seed script for initial user creation.

migrations/versions/aab8050e9c73_.py

@@ -0,0 +1,39 @@
+"""empty message
+
+Revision ID: aab8050e9c73
+Revises: 
+Create Date: 2025-06-26 10:24:25.760737
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'aab8050e9c73'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('units',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('user',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('username', sa.String(length=150), nullable=False),
+    sa.Column('password', sa.String(length=150), nullable=False),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('username')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('user')
+    op.drop_table('units')
+    # ### end Alembic commands ###