feat(coord): DB migration — project-scoped missions, multi-tenant RBAC (#149)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

packages/brain/src/mission-tasks.ts

@@ -0,0 +1,61 @@
+import { eq, and, type Db, missionTasks } from '@mosaic/db';
+
+export type MissionTask = typeof missionTasks.$inferSelect;
+export type NewMissionTask = typeof missionTasks.$inferInsert;
+
+export function createMissionTasksRepo(db: Db) {
+  return {
+    async findByMission(missionId: string): Promise<MissionTask[]> {
+      return db.select().from(missionTasks).where(eq(missionTasks.missionId, missionId));
+    },
+
+    async findByMissionAndUser(missionId: string, userId: string): Promise<MissionTask[]> {
+      return db
+        .select()
+        .from(missionTasks)
+        .where(and(eq(missionTasks.missionId, missionId), eq(missionTasks.userId, userId)));
+    },
+
+    async findById(id: string): Promise<MissionTask | undefined> {
+      const rows = await db.select().from(missionTasks).where(eq(missionTasks.id, id));
+      return rows[0];
+    },
+
+    async findByIdAndUser(id: string, userId: string): Promise<MissionTask | undefined> {
+      const rows = await db
+        .select()
+        .from(missionTasks)
+        .where(and(eq(missionTasks.id, id), eq(missionTasks.userId, userId)));
+      return rows[0];
+    },
+
+    async create(data: NewMissionTask): Promise<MissionTask> {
+      const rows = await db.insert(missionTasks).values(data).returning();
+      return rows[0]!;
+    },
+
+    async update(id: string, data: Partial<NewMissionTask>): Promise<MissionTask | undefined> {
+      const rows = await db
+        .update(missionTasks)
+        .set({ ...data, updatedAt: new Date() })
+        .where(eq(missionTasks.id, id))
+        .returning();
+      return rows[0];
+    },
+
+    async remove(id: string): Promise<boolean> {
+      const rows = await db.delete(missionTasks).where(eq(missionTasks.id, id)).returning();
+      return rows.length > 0;
+    },
+
+    async removeByMission(missionId: string): Promise<number> {
+      const rows = await db
+        .delete(missionTasks)
+        .where(eq(missionTasks.missionId, missionId))
+        .returning();
+      return rows.length;
+    },
+  };
+}
+
+export type MissionTasksRepo = ReturnType<typeof createMissionTasksRepo>;