fix(v0.1): recover session PVC when prior create left session without storage

之前的失败用例会让 session 留在 storageKind=none 状态但 pvcName 缺失，
现在 POST /api/v1/sessions 在 storageKind=none || !storagePvcName 时
重新调 createSessionPvc 补建，action=session-storage-recovered。

selftest 覆盖：显式 reset storageKind=none 后第二次 POST 走 recovery。

src/mgr/server.ts

@@ -179,6 +179,10 @@ async function route({ method, url, body, store, sourceCommit, runnerJobDefaults
     const existing = await store.getSession(sessionId);
     if (existing) {
       if (existing.storageKind === "evicted") throw new AgentRunError("session-store-evicted", `session ${sessionId} storage has been evicted; create a new sessionId`, { httpStatus: 409 });
+      if (existing.storageKind === "none" || !existing.storagePvcName) {
+        const recovered = await createSessionPvc({ store, sessionId, options: { ...sessionPvcOptionsForRequest(sessionPvcDefaults, runnerJobDefaults), defaultCodexRolloutSubdir: codexRolloutSubdir } });
+        return { action: "session-storage-recovered", session: existing, pvc: recovered, valuesPrinted: false } as unknown as JsonValue;
+      }
       return { action: "session-exists", session: existing, pvcName: existing.storagePvcName ?? null, pvcPhase: existing.storagePvcPhase ?? null, codexRolloutSubdir: existing.codexRolloutSubdir ?? "sessions", valuesPrinted: false } as unknown as JsonValue;
     }
     const now = new Date().toISOString();

src/selftest/cases/10-mgr-session-pvc.ts

@@ -79,8 +79,15 @@ const selfTest: SelfTestCase = async () => {
     const create = await client.post("/api/v1/sessions", { sessionId: "sess_rest_create_001", tenantId: "hwlab", projectId: "pikasTech/HWLAB", backendProfile: "codex" }) as { action: string; pvc: { pvcName: string; pvcPhase: string } };
     assert.equal(create.action, "session-created");
     assert.ok(create.pvc.pvcName.startsWith("agentrun-v01-session-"));
-    const existing = await client.post("/api/v1/sessions", { sessionId: "sess_rest_create_001", tenantId: "hwlab", projectId: "pikasTech/HWLAB", backendProfile: "codex" }) as { action: string };
-    assert.equal(existing.action, "session-exists");
+  const existing = await client.post("/api/v1/sessions", { sessionId: "sess_rest_create_001", tenantId: "hwlab", projectId: "pikasTech/HWLAB", backendProfile: "codex" }) as { action: string };
+  assert.equal(existing.action, "session-exists");
+  const recovered = await client.post("/api/v1/sessions", { sessionId: "sess_rest_create_002", tenantId: "hwlab", projectId: "pikasTech/HWLAB", backendProfile: "codex" }) as { action: string };
+  assert.equal(recovered.action, "session-created");
+  const recoveredFromNone = await client.post("/api/v1/sessions", { sessionId: "sess_rest_create_003", tenantId: "hwlab", projectId: "pikasTech/HWLAB", backendProfile: "codex" }) as { action: string };
+  assert.equal(recoveredFromNone.action, "session-created");
+  await restStore.refreshSessionStorage({ sessionId: "sess_rest_create_003", storageKind: "none", codexRolloutSubdir: "sessions" });
+  const recoveredAgain = await client.post("/api/v1/sessions", { sessionId: "sess_rest_create_003", tenantId: "hwlab", projectId: "pikasTech/HWLAB", backendProfile: "codex" }) as { action: string };
+  assert.equal(recoveredAgain.action, "session-storage-recovered");
   } finally {
     if (server.server.listening) await new Promise<void>((resolve) => server.server.close(() => resolve()));
   }