backend/frontend/runtime: 训练面板 / session 隔离 / agent runtime 调整

- backend/api/server.py：训练 step-detail / pipeline 卡片排序逻辑
- frontend：thread-list / thread / training-pipeline-panel / step-detail-sheet 配套调整，新增 metrics-chart-panel
- src/agent_*：tool spec / runtime / prompting 配套
- .gitignore 加 .logs/

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

frontend/app/components/assistant-ui/thread-list.tsx

@@ -24,6 +24,7 @@ import {
 import { Button } from "@/components/ui/button";
 import {
 	clearActiveSessionId,
+	markFreshLocalId,
 	readActiveSessionId,
 	writeActiveSessionId,
 	writePendingWorkspaceSessionId,
@@ -163,6 +164,7 @@ function ensureSidebarWorkspaceSessionId(): {
 		typeof crypto !== "undefined" && "randomUUID" in crypto
 			? `__LOCALID_${crypto.randomUUID().replace(/-/g, "").slice(0, 8)}`
 			: `__LOCALID_${Math.random().toString(36).slice(2, 10)}`;
+	markFreshLocalId(generated);
 	writeActiveSessionId(generated);
 	return { sessionId: generated, created: true };
 }
@@ -438,6 +440,10 @@ const ClawSessionList: FC = () => {
 									type="button"
 									className="aui-thread-list-item-trigger flex h-full min-w-0 flex-1 items-center truncate px-3 text-start text-sm"
 									onClick={async () => {
+										console.log("[session-list] click", {
+											sessionId: session.session_id,
+											preview: session.preview,
+										});
 										setOpenMenuSessionId(null);
 										writeActiveSessionId(session.session_id);
 										pushSessionUrl(session.session_id);