rebuild(stage-8): deliver market insight workspaces

next/backend/database/migrations/m0006_watchlists.py

@@ -0,0 +1,33 @@
+from __future__ import annotations
+
+import sqlite3
+
+from backend.database.migrations.runner import Migration
+
+
+def upgrade(connection: sqlite3.Connection) -> None:
+    connection.execute(
+        """
+        CREATE TABLE watchlist_entries (
+            user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+            identifier TEXT NOT NULL,
+            name TEXT NOT NULL,
+            sector TEXT,
+            created_at TEXT NOT NULL,
+            PRIMARY KEY (user_id, identifier)
+        )
+        """
+    )
+
+
+def downgrade(connection: sqlite3.Connection) -> None:
+    connection.execute("DROP TABLE watchlist_entries")
+
+
+MIGRATION = Migration(
+    version=6,
+    name="create_account_watchlists",
+    signature="accounts:v2:isolated-watchlist-entries",
+    upgrade=upgrade,
+    downgrade=downgrade,
+)