chore: initial project setup

Initialize Sneaky Klaus project with:
- uv package management and pyproject.toml
- Flask application structure (app.py, config.py)
- SQLAlchemy models for Admin and Exchange
- Alembic database migrations
- Pre-commit hooks configuration
- Development tooling (pytest, ruff, mypy)

Initial structure follows design documents in docs/:
- src/app.py: Application factory with Flask extensions
- src/config.py: Environment-based configuration
- src/models/: Admin and Exchange models
- migrations/: Alembic migration setup

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

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

migrations/versions/eeff6e1a89cd_initial_schema_with_admin_and_exchange_.py

@@ -0,0 +1,29 @@
+"""Initial schema with Admin and Exchange models
+
+Revision ID: eeff6e1a89cd
+Revises:
+Create Date: 2025-12-22 11:24:00.652946
+
+"""
+
+from collections.abc import Sequence
+
+# revision identifiers, used by Alembic.
+revision: str = "eeff6e1a89cd"
+down_revision: str | Sequence[str] | None = None
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    pass
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    pass
+    # ### end Alembic commands ###