Initial commit: clean project structure

- Backend: FastAPI + SQLAlchemy + Celery (Python 3.11+)
- Frontend: Vue 3 + TypeScript + Pinia + Tailwind
- Admin Frontend: separate Vue 3 app for management
- Docker Compose: 9 services orchestration
- Specs: design prototypes, memory system PRD, product roadmap

Cleanup performed:
- Removed temporary debug scripts from backend root
- Removed deprecated admin_app.py (embedded UI)
- Removed duplicate docs from admin-frontend
- Updated .gitignore for Vite cache and egg-info

backend/alembic/versions/0004_add_child_profiles.py

@@ -0,0 +1,42 @@
+"""add child profiles
+
+Revision ID: 0004_add_child_profiles
+Revises: 0003_add_monitoring
+Create Date: 2025-12-22
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = "0004_add_child_profiles"
+down_revision = "0003_add_monitoring"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_table(
+        "child_profiles",
+        sa.Column("id", sa.String(36), primary_key=True),
+        sa.Column("user_id", sa.String(255), sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False),
+        sa.Column("name", sa.String(50), nullable=False),
+        sa.Column("avatar_url", sa.String(500)),
+        sa.Column("birth_date", sa.Date()),
+        sa.Column("gender", sa.String(10)),
+        sa.Column("interests", sa.JSON(), server_default="[]", nullable=False),
+        sa.Column("growth_themes", sa.JSON(), server_default="[]", nullable=False),
+        sa.Column("reading_preferences", sa.JSON(), server_default="{}", nullable=False),
+        sa.Column("stories_count", sa.Integer(), server_default="0", nullable=False),
+        sa.Column("total_reading_time", sa.Integer(), server_default="0", nullable=False),
+        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
+        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
+        sa.UniqueConstraint("user_id", "name", name="uq_child_profile_user_name"),
+    )
+    op.create_index("idx_child_profiles_user_id", "child_profiles", ["user_id"])
+
+
+def downgrade():
+    op.drop_index("idx_child_profiles_user_id", table_name="child_profiles")
+    op.drop_table("child_profiles")