feat(ai): make agent turn limit configurable

apps/desktop/src/components/editor/EditorSettingsDialog.vue

@@ -48,6 +48,7 @@ import {
 } from "@/stores/settingsStore";
 import { createRunStatementButtonDom, loadEditorTheme, editorFontTheme } from "@/lib/editor/editorThemes";
 import { orderAiConfigsForDisplay } from "@/lib/ai/aiConfigOrdering";
+import { MAX_AGENT_TURNS_DEFAULT, MAX_AGENT_TURNS_MAX, MAX_AGENT_TURNS_MIN, maxAgentTurnsOutOfRange, normalizeMaxAgentTurns } from "@/lib/ai/maxAgentTurns";
 import { normalizeAiModelEffortLevels, normalizeClaudeCodeReasoningLevel } from "@/lib/ai/aiModelEffort";
 import ThemeCustomizerDialog from "./ThemeCustomizerDialog.vue";
 import TunnelProfileManager from "@/components/connection/TunnelProfileManager.vue";
@@ -65,6 +66,8 @@ import {
   forgetWebdavSyncSecretsPassphrase,
   forgetWebdavSavedPassword,
   getAppSupportInfo,
+  loadMaxAgentTurns,
+  saveMaxAgentTurns,
   saveWebdavSyncSecretsPreference,
   saveWebdavSavedPassword,
   saveSnippetSavedToken,
@@ -1954,6 +1957,7 @@ watch(activeSettingsTab, async (tab) => {
   if (tab === "mcp" && !mcpStatus.value && !mcpStatusLoading.value) void refreshMcpStatus();
   if (tab === "ai" && aiIsCliProvider.value) void ensureCliMcpStatus();
   if (tab === "ai") {
+    void loadMaxAgentTurnsSetting();
     // Await completion so we don't snapshot an empty default when the store
     // is still loading its first payload (init via App.vue is fire-and-forget).
     await promptTemplateStore.ensureLoaded();
@@ -2137,6 +2141,45 @@ function globalInstructionsTooLong(): boolean {
   return promptTemplateCharacterCount(editGlobalInstructions.value) > GLOBAL_INSTRUCTIONS_MAX;
 }
 
+// Agent turn limit for DBX's API-backed agent loop. CLI providers enforce their own limits.
+// Mirrors DEFAULT/MIN/MAX_MAX_AGENT_TURNS in crates/dbx-core/src/agent_loop.rs —
+// keep in sync; the backend clamp on save/load is the actual source of truth.
+const editMaxAgentTurns = ref<number | undefined>(undefined);
+const maxAgentTurnsSaving = ref(false);
+const maxAgentTurnsLoaded = ref(false);
+const maxAgentTurnsLoading = ref(false);
+const maxAgentTurnsLoadError = ref("");
+
+async function loadMaxAgentTurnsSetting() {
+  if (maxAgentTurnsLoaded.value || maxAgentTurnsLoading.value) return;
+  maxAgentTurnsLoading.value = true;
+  maxAgentTurnsLoadError.value = "";
+  try {
+    editMaxAgentTurns.value = await loadMaxAgentTurns();
+    maxAgentTurnsLoaded.value = true;
+  } catch (e: any) {
+    maxAgentTurnsLoadError.value = e?.message || String(e);
+    toast(maxAgentTurnsLoadError.value, 5000);
+  } finally {
+    maxAgentTurnsLoading.value = false;
+  }
+}
+
+async function saveMaxAgentTurnsSetting() {
+  if (!maxAgentTurnsLoaded.value) return;
+  const clamped = normalizeMaxAgentTurns(editMaxAgentTurns.value);
+  maxAgentTurnsSaving.value = true;
+  try {
+    await saveMaxAgentTurns(clamped);
+    editMaxAgentTurns.value = clamped;
+    toast(t("ai.maxAgentTurnsSaved"));
+  } catch (e: any) {
+    toast(e?.message || String(e), 5000);
+  } finally {
+    maxAgentTurnsSaving.value = false;
+  }
+}
+
 // AI Config Delete Confirmation
 const aiDeleteConfirmOpen = ref(false);
 const aiDeleteConfigId = ref<string | null>(null);
@@ -4768,6 +4811,28 @@ onUnmounted(cleanupPreviewEditor);
                 </div>
               </div>
 
+              <!-- Agent Turn Limit (list mode, global) -->
+              <div v-if="aiConfigListMode === 'list'" class="space-y-3">
+                <Separator />
+                <div>
+                  <h3 class="text-sm font-medium">{{ t("ai.maxAgentTurns") }}</h3>
+                  <p class="text-xs text-muted-foreground">{{ t("ai.maxAgentTurnsDescription") }}</p>
+                </div>
+                <div class="flex items-center gap-2">
+                  <Input v-model.number="editMaxAgentTurns" type="number" :min="MAX_AGENT_TURNS_MIN" :max="MAX_AGENT_TURNS_MAX" step="1" class="h-8 w-32 text-xs" :placeholder="String(MAX_AGENT_TURNS_DEFAULT)" :disabled="!maxAgentTurnsLoaded || maxAgentTurnsSaving" />
+                  <span class="text-xs" :class="maxAgentTurnsOutOfRange(editMaxAgentTurns) ? 'text-destructive' : 'text-muted-foreground'">
+                    {{ t("ai.maxAgentTurnsRange", { min: MAX_AGENT_TURNS_MIN, max: MAX_AGENT_TURNS_MAX, default: MAX_AGENT_TURNS_DEFAULT }) }}
+                  </span>
+                  <div class="flex-1"></div>
+                  <Button v-if="maxAgentTurnsLoadError" type="button" size="sm" variant="outline" :disabled="maxAgentTurnsLoading" @click="loadMaxAgentTurnsSetting">
+                    {{ t("common.retry") }}
+                  </Button>
+                  <Button type="button" size="sm" :disabled="!maxAgentTurnsLoaded || maxAgentTurnsSaving || maxAgentTurnsOutOfRange(editMaxAgentTurns)" @click="saveMaxAgentTurnsSetting">
+                    {{ maxAgentTurnsSaving ? t("common.processing") : t("common.save") }}
+                  </Button>
+                </div>
+              </div>
+
               <!-- Prompt Templates Management (list mode) -->
               <div v-if="aiConfigListMode === 'list'" class="space-y-3">
                 <Separator />