feat: add is_chat field to board memory and task_id to approvals, update pagination and response models

backend/alembic/versions/1d844b04ee06_add_approvals_task_id.py

@@ -0,0 +1,101 @@
+"""add approvals task_id
+
+Revision ID: 1d844b04ee06
+Revises: a5aab244d32d
+Create Date: 2026-02-06 17:26:43.336466
+
+"""
+
+from __future__ import annotations
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = "1d844b04ee06"
+down_revision = "a5aab244d32d"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # This migration may run in databases where the column/index/constraint were created via
+    # SQLModel `create_all()` (or a previous hotfix). Make it idempotent to avoid blocking
+    # upgrades in dev environments.
+    bind = op.get_bind()
+    inspector = sa.inspect(bind)
+
+    approval_cols = {c["name"] for c in inspector.get_columns("approvals")}
+    if "task_id" not in approval_cols:
+        op.add_column("approvals", sa.Column("task_id", sa.Uuid(), nullable=True))
+
+    approval_index_names = {i["name"] for i in inspector.get_indexes("approvals")}
+    if "ix_approvals_task_id" not in approval_index_names:
+        op.create_index("ix_approvals_task_id", "approvals", ["task_id"], unique=False)
+
+    # Backfill from legacy JSON payload keys when they contain a valid UUID.
+    op.execute(
+        """
+        WITH src AS (
+          SELECT
+            id,
+            COALESCE(
+              payload->>'task_id',
+              payload->>'taskId',
+              payload->>'taskID'
+            ) AS task_id_str
+          FROM approvals
+          WHERE task_id IS NULL
+        ),
+        valid AS (
+          SELECT
+            id,
+            task_id_str::uuid AS task_id
+          FROM src
+          WHERE task_id_str ~* '^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$'
+        ),
+        existing AS (
+          SELECT v.id, v.task_id
+          FROM valid AS v
+          JOIN tasks AS t ON t.id = v.task_id
+        )
+        UPDATE approvals AS a
+        SET task_id = existing.task_id
+        FROM existing
+        WHERE a.id = existing.id;
+        """
+    )
+
+    # Avoid FK failures if any approvals point at deleted tasks.
+    op.execute(
+        """
+        UPDATE approvals AS a
+        SET task_id = NULL
+        WHERE task_id IS NOT NULL
+          AND NOT EXISTS (
+            SELECT 1 FROM tasks AS t WHERE t.id = a.task_id
+          );
+        """
+    )
+
+    approval_fks = inspector.get_foreign_keys("approvals")
+    has_task_fk = any(
+        (fk.get("referred_table") == "tasks" and "task_id" in (fk.get("constrained_columns") or []))
+        for fk in approval_fks
+    )
+    if not has_task_fk:
+        op.create_foreign_key(
+            "fk_approvals_task_id_tasks",
+            "approvals",
+            "tasks",
+            ["task_id"],
+            ["id"],
+            ondelete="SET NULL",
+        )
+
+
+def downgrade() -> None:
+    op.drop_constraint("fk_approvals_task_id_tasks", "approvals", type_="foreignkey")
+    op.drop_index("ix_approvals_task_id", table_name="approvals")
+    op.drop_column("approvals", "task_id")