feat(settings): agent.sessionDir setting shown on settings page

null keeps the deployment default (AGENT_SESSION_DIR / DATA_DIR/agent-sessions).

Co-Authored-By: Claude Opus 5.5 <[email protected]>

apps/web/app/routes/console/settings/prefs-tab.tsx

@@ -247,6 +247,14 @@ const AGENT_RUNTIME_CARD: CardSpec = {
       kind: "textarea",
       hint: '{"match":"收进来","steps":[{"toolCalls":[{"capability":"inventory.query","input":{"query":"沙丘2"}}]}],"finalText":"…"},格式见 docs/runbook/agent.md',
     },
+    {
+      name: "agent.sessionDir",
+      label: "会话目录",
+      kind: "text",
+      wide: true,
+      placeholder: "留空用部署默认:DATA_DIR/agent-sessions(容器内 /data/agent-sessions)",
+      hint: "绝对路径,api 与 worker 进程都要可读写;有运行中的会话时不要改(续跑会找不到旧会话文件)",
+    },
   ],
   fromSettings: (s) => ({
     "agent.maxToolCalls": n(s.agent.maxToolCalls),
@@ -256,6 +264,7 @@ const AGENT_RUNTIME_CARD: CardSpec = {
     "agent.goalPollSec": n(s.agent.goalPollSec),
     "agent.goalWaitHours": n(s.agent.goalWaitHours),
     "agent.fakeScript": s.agent.fakeScript ?? "",
+    "agent.sessionDir": s.agent.sessionDir ?? "",
   }),
   toPatch: (v) => ({
     agent: {
@@ -266,6 +275,7 @@ const AGENT_RUNTIME_CARD: CardSpec = {
       goalPollSec: num(v["agent.goalPollSec"]),
       goalWaitHours: num(v["agent.goalWaitHours"]),
       fakeScript: str(v["agent.fakeScript"]).trim() || null,
+      sessionDir: str(v["agent.sessionDir"]).trim() || null,
     },
   }),
 };