feat: improve app ui and project metadata

packages/db/migrations/versions/8c1d2e3f4a5b_chapters_updated_at.py

@@ -0,0 +1,35 @@
+"""Add updated_at to chapters.
+
+Revision ID: 8c1d2e3f4a5b
+Revises: 59a9198d4604
+Create Date: 2026-06-28 00:00:00.000000
+"""
+
+from __future__ import annotations
+
+from collections.abc import Sequence
+
+import sqlalchemy as sa
+from alembic import op
+
+revision: str = "8c1d2e3f4a5b"
+down_revision: str | None = "59a9198d4604"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    op.add_column(
+        "chapters",
+        sa.Column(
+            "updated_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("now()"),
+            nullable=False,
+        ),
+    )
+    op.execute("UPDATE chapters SET updated_at = created_at")
+
+
+def downgrade() -> None:
+    op.drop_column("chapters", "updated_at")

packages/db/ww_db/models.py

@@ -165,7 +165,7 @@ class Rule(UuidPk, CreatedAt, Base):
     content: Mapped[str] = mapped_column(Text, nullable=False)
 
 
-class Chapter(UuidPk, CreatedAt, Base):
+class Chapter(UuidPk, TimestampedMixin, Base):
     __tablename__ = "chapters"
     __table_args__ = (
         UniqueConstraint("project_id", "chapter_no", "version"),