feat(worker): clamp max-turns to a configurable ceiling

Runaway sessions were the single biggest cost driver: model_presets was never persisted (stayed code-only), default_max_turns shipped at 100, and ResolveMaxTurns had no upper bound, so a task/list override could run hundreds of turns unchecked. - TaskRunner.ResolveMaxTurns now clamps the resolved value to AppSettings.MaxTurnsCeiling (new column, default 80) and logs a warning with task id / requested / effective value when it clamps. - default_max_turns default lowered from 100 to 40 (entity, EF config, and the seeded row via the new AddMaxTurnsCeiling migration). - AppSettingsRepository.GetAsync backfills model_presets with the shipping defaults on first read instead of leaving the column null. - Settings > General's per-model preset table and the task/list agent editor now show a hint when a set max-turns value exceeds the ceiling.
2026-08-05 15:40:02 +02:00
parent 83ea429b8a
commit 08ac8bf7b1
22 changed files with 1093 additions and 50 deletions
@@ -0,0 +1,63 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace ClaudeDo.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddMaxTurnsCeiling : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<int>(
+                name: "default_max_turns",
+                table: "app_settings",
+                type: "INTEGER",
+                nullable: false,
+                defaultValue: 40,
+                oldClrType: typeof(int),
+                oldType: "INTEGER",
+                oldDefaultValue: 30);
+
+            migrationBuilder.AddColumn<int>(
+                name: "max_turns_ceiling",
+                table: "app_settings",
+                type: "INTEGER",
+                nullable: false,
+                defaultValue: 80);
+
+            migrationBuilder.UpdateData(
+                table: "app_settings",
+                keyColumn: "id",
+                keyValue: 1,
+                columns: new[] { "default_max_turns", "max_turns_ceiling" },
+                values: new object[] { 40, 80 });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "max_turns_ceiling",
+                table: "app_settings");
+
+            migrationBuilder.AlterColumn<int>(
+                name: "default_max_turns",
+                table: "app_settings",
+                type: "INTEGER",
+                nullable: false,
+                defaultValue: 30,
+                oldClrType: typeof(int),
+                oldType: "INTEGER",
+                oldDefaultValue: 40);
+
+            migrationBuilder.UpdateData(
+                table: "app_settings",
+                keyColumn: "id",
+                keyValue: 1,
+                column: "default_max_turns",
+                value: 100);
+        }
+    }
+}