feat: Initialize frontend and backend structure with essential configurations

- Added TypeScript build info for frontend.
- Created Vite configuration for React application.
- Implemented pre-commit hook to run checks before commits.
- Set up PostgreSQL Dockerfile with PostGIS support and initialization scripts.
- Added database creation script for PostgreSQL with necessary extensions.
- Established Python project configuration with dependencies and development tools.
- Developed pre-commit script to enforce code quality checks for backend and frontend.
- Created PowerShell script to set up Git hooks path.

backend/migrations/env.py

@@ -0,0 +1,69 @@
+from __future__ import annotations
+
+from logging.config import fileConfig
+from typing import Any, Dict
+
+from alembic import context
+from sqlalchemy import engine_from_config, pool
+
+from backend.app.core.config import get_settings
+from backend.app.db.models import Base
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# add your model's MetaData object here for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+# target_metadata = None
+
+target_metadata = Base.metadata
+
+
+def get_run_options() -> Dict[str, Any]:
+    settings = get_settings()
+    return {"url": settings.database_url}
+
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode."""
+
+    kwargs = get_run_options()
+    context.configure(
+        url=kwargs["url"],
+        target_metadata=target_metadata,
+        literal_binds=True,
+        compare_type=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode."""
+
+    kwargs = get_run_options()
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+        url=kwargs["url"],
+    )
+
+    with connectable.connect() as connection:
+        context.configure(connection=connection, target_metadata=target_metadata, compare_type=True)
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

backend/migrations/script.py.mako

@@ -0,0 +1,19 @@
+"""Template for new Alembic migration scripts."""
+
+from __future__ import annotations
+
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade() -> None:
+    pass
+
+
+def downgrade() -> None:
+    pass

backend/migrations/versions/20251011_01_initial_schema.py

@@ -0,0 +1,108 @@
+"""Initial PostgreSQL/PostGIS schema"""
+
+from __future__ import annotations
+
+import sqlalchemy as sa
+from alembic import op
+from geoalchemy2.types import Geometry
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = "20251011_01"
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.execute("CREATE EXTENSION IF NOT EXISTS postgis")
+    op.execute("CREATE EXTENSION IF NOT EXISTS pgcrypto")
+
+    op.create_table(
+        "users",
+        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True, server_default=sa.text("gen_random_uuid()")),
+        sa.Column("username", sa.String(length=64), nullable=False, unique=True),
+        sa.Column("email", sa.String(length=255), nullable=True, unique=True),
+        sa.Column("full_name", sa.String(length=128), nullable=True),
+        sa.Column("password_hash", sa.String(length=256), nullable=False),
+        sa.Column("role", sa.String(length=32), nullable=False, server_default="player"),
+        sa.Column("preferences", sa.Text(), nullable=True),
+        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("timezone('utc', now())"), nullable=False),
+        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.text("timezone('utc', now())"), nullable=False),
+    )
+
+    op.create_table(
+        "stations",
+        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True, server_default=sa.text("gen_random_uuid()")),
+        sa.Column("osm_id", sa.String(length=32), nullable=True),
+        sa.Column("name", sa.String(length=128), nullable=False),
+        sa.Column("code", sa.String(length=16), nullable=True),
+        sa.Column("location", Geometry(geometry_type="POINT", srid=4326), nullable=False),
+        sa.Column("elevation_m", sa.Float(), nullable=True),
+        sa.Column("is_active", sa.Boolean(), nullable=False, server_default=sa.text("true")),
+        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("timezone('utc', now())"), nullable=False),
+        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.text("timezone('utc', now())"), nullable=False),
+    )
+    op.create_index("ix_stations_location", "stations", ["location"], postgresql_using="gist")
+
+    op.create_table(
+        "tracks",
+        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True, server_default=sa.text("gen_random_uuid()")),
+        sa.Column("name", sa.String(length=128), nullable=True),
+        sa.Column("start_station_id", postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column("end_station_id", postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column("length_meters", sa.Numeric(10, 2), nullable=True),
+        sa.Column("max_speed_kph", sa.Integer(), nullable=True),
+        sa.Column("is_bidirectional", sa.Boolean(), nullable=False, server_default=sa.text("true")),
+        sa.Column("status", sa.String(length=32), nullable=False, server_default="planned"),
+        sa.Column("track_geometry", Geometry(geometry_type="LINESTRING", srid=4326), nullable=False),
+        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("timezone('utc', now())"), nullable=False),
+        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.text("timezone('utc', now())"), nullable=False),
+        sa.ForeignKeyConstraint(["start_station_id"], ["stations.id"], ondelete="RESTRICT"),
+        sa.ForeignKeyConstraint(["end_station_id"], ["stations.id"], ondelete="RESTRICT"),
+        sa.UniqueConstraint("start_station_id", "end_station_id", name="uq_tracks_station_pair"),
+    )
+    op.create_index("ix_tracks_geometry", "tracks", ["track_geometry"], postgresql_using="gist")
+
+    op.create_table(
+        "trains",
+        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True, server_default=sa.text("gen_random_uuid()")),
+        sa.Column("designation", sa.String(length=64), nullable=False, unique=True),
+        sa.Column("operator_id", postgresql.UUID(as_uuid=True), nullable=True),
+        sa.Column("home_station_id", postgresql.UUID(as_uuid=True), nullable=True),
+        sa.Column("capacity", sa.Integer(), nullable=False),
+        sa.Column("max_speed_kph", sa.Integer(), nullable=False),
+        sa.Column("consist", sa.Text(), nullable=True),
+        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("timezone('utc', now())"), nullable=False),
+        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.text("timezone('utc', now())"), nullable=False),
+        sa.ForeignKeyConstraint(["operator_id"], ["users.id"], ondelete="SET NULL"),
+        sa.ForeignKeyConstraint(["home_station_id"], ["stations.id"], ondelete="SET NULL"),
+    )
+
+    op.create_table(
+        "train_schedules",
+        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True, server_default=sa.text("gen_random_uuid()")),
+        sa.Column("train_id", postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column("sequence_index", sa.Integer(), nullable=False),
+        sa.Column("station_id", postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column("scheduled_arrival", sa.DateTime(timezone=True), nullable=True),
+        sa.Column("scheduled_departure", sa.DateTime(timezone=True), nullable=True),
+        sa.Column("dwell_seconds", sa.Integer(), nullable=True),
+        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("timezone('utc', now())"), nullable=False),
+        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.text("timezone('utc', now())"), nullable=False),
+        sa.ForeignKeyConstraint(["train_id"], ["trains.id"], ondelete="CASCADE"),
+        sa.ForeignKeyConstraint(["station_id"], ["stations.id"], ondelete="CASCADE"),
+        sa.UniqueConstraint("train_id", "sequence_index", name="uq_train_schedule_sequence"),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("train_schedules")
+    op.drop_table("trains")
+    op.drop_index("ix_tracks_geometry", table_name="tracks")
+    op.drop_table("tracks")
+    op.drop_index("ix_stations_location", table_name="stations")
+    op.drop_table("stations")
+    op.drop_table("users")
+    op.execute("DROP EXTENSION IF EXISTS pgcrypto")
+    op.execute("DROP EXTENSION IF EXISTS postgis")