feat(worker): dependsOn via MCP + honest staleness signal in merge preview

Adds a user/MCP-declared task dependency (DependsOnTaskId) distinct from the planning chain's internal BlockedByTaskId: add_task/update_task can set it, the queue picker skips a Queued task until the dependency reaches Done, a Failed/Cancelled dependency leaves the dependent blocked instead of starving silently, and setting a link rejects self-reference/unknown-id/cycles. get_task/list_tasks/batch_get_tasks now report blocked/blockedReason, and wait_for_task_change reports "Blocked" immediately instead of running out its timeout on a task the picker will never claim. preview_merge/preview_merge_set gain staleFiles: files a branch touches that the target branch also changed since the branch's fork point, a more honest staleness signal than `behind` alone.
2026-08-10 14:18:55 +02:00
parent 6a2a19cc9e
commit 6c8ec245b3
20 changed files with 1750 additions and 51 deletions
@@ -0,0 +1,49 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace ClaudeDo.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddTaskDependency : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "depends_on_task_id",
+                table: "tasks",
+                type: "TEXT",
+                nullable: true);
+
+            migrationBuilder.CreateIndex(
+                name: "idx_tasks_depends_on",
+                table: "tasks",
+                column: "depends_on_task_id");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_tasks_tasks_depends_on_task_id",
+                table: "tasks",
+                column: "depends_on_task_id",
+                principalTable: "tasks",
+                principalColumn: "id",
+                onDelete: ReferentialAction.SetNull);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_tasks_tasks_depends_on_task_id",
+                table: "tasks");
+
+            migrationBuilder.DropIndex(
+                name: "idx_tasks_depends_on",
+                table: "tasks");
+
+            migrationBuilder.DropColumn(
+                name: "depends_on_task_id",
+                table: "tasks");
+        }
+    }
+}