Add OpenRouter chat provider; fix Windows load errors (0.17.0).

- OpenRouter as an alternative chat provider: server-side API key
  (settings.json or OPENROUTER_API_KEY), model list with vision marks and
  filter, SSE streaming, images as data URLs. Memory embeddings stay on Ollama;
  park/warm LLM are no-ops for the remote provider.
- AssistentSaveKnowledgeAttach: JArray param is not supported by SwarmUI API
  reflection and aborted registration of every later API call; use string[].
- SQLite bootstrap: preload native e_sqlite3 for the current OS/arch
  (win/osx/linux) and resolve DllImport to it.
- settings.json: shared-read + atomic write with retry to avoid Windows
  sharing violations.
- csproj: fix MSB4012 in the native SQLite copy target.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Assets/assistent.bundle.js

@@ -1733,6 +1733,12 @@
       waitImageTimer: null,
       lastImageDataUrl: null,
       preferredModel: null,
+      /** Chat provider mirrored from server settings: 'ollama' | 'openrouter'. */
+      provider: "ollama",
+      chatModels: [],
+      chatModelsPreferred: "",
+      visionModels: [],
+      openrouterModelSaved: "",
       inventory: { loras: [], checkpoints: [], wildcards: [], has_civitai_key: false },
       inventoryFetchedAt: 0,
       streamEl: null,
@@ -3479,7 +3485,7 @@ ${patch.prompt}`;
       }
       const model = $("sa_model")?.value;
       if (!model) {
-        setStatus("\u0412\u044B\u0431\u0435\u0440\u0438 \u043C\u043E\u0434\u0435\u043B\u044C Ollama \u0432 \u2699");
+        setStatus("\u0412\u044B\u0431\u0435\u0440\u0438 \u043C\u043E\u0434\u0435\u043B\u044C \u0447\u0430\u0442\u0430 \u0432 \u2699");
         return false;
       }
       const { prompt, foldCount } = buildCompressUserPrompt();
@@ -3642,7 +3648,7 @@ ${patch.prompt}`;
       }
       const model = $("sa_model")?.value;
       if (!model) {
-        setStatus("\u0412\u044B\u0431\u0435\u0440\u0438 \u043C\u043E\u0434\u0435\u043B\u044C Ollama \u0432 \u2699");
+        setStatus("\u0412\u044B\u0431\u0435\u0440\u0438 \u043C\u043E\u0434\u0435\u043B\u044C \u0447\u0430\u0442\u0430 \u0432 \u2699");
         return;
       }
       state.busy = true;
@@ -7459,6 +7465,7 @@ ${patch.prompt}`;
       localStorage.setItem(LS_AUTO_CRITIQUE, $("sa_auto_critique")?.checked ? "1" : "0");
       localStorage.setItem(LS_AUTO_DOWNLOAD, $("sa_auto_download")?.checked ? "1" : "0");
       localStorage.setItem(LS_PARK_LLM, $("sa_park_llm")?.checked ? "1" : "0");
+      persistOpenRouterModel();
       persistServerSettings();
       saveUiStateToDisk();
     }
@@ -8023,22 +8030,44 @@ ${data.ui.help_extra}`.trim();
       if (!list.length) {
         return "";
       }
-      const preferred = apiPreferred && list.includes(apiPreferred) ? apiPreferred : pickSeniorChatModel(list);
       const ls = state.preferredModel || localStorage.getItem(LS_MODEL) || "";
+      if (isOpenRouter()) {
+        if (apiPreferred && list.includes(apiPreferred)) {
+          return apiPreferred;
+        }
+        return ls && list.includes(ls) ? ls : list[0];
+      }
+      const preferred = apiPreferred && list.includes(apiPreferred) ? apiPreferred : pickSeniorChatModel(list);
       if (ls && list.includes(ls)) {
         return ls;
       }
       return preferred || list[0];
     }
+    function isOpenRouter() {
+      return state.provider === "openrouter";
+    }
+    function providerLabel() {
+      return isOpenRouter() ? "OpenRouter" : "Ollama";
+    }
+    function renderChatModelOptions() {
+      const current = $("sa_model")?.value || "";
+      const filter = isOpenRouter() ? String($("sa_openrouter_filter")?.value || "").trim().toLowerCase() : "";
+      let names = state.chatModels;
+      if (filter) {
+        names = names.filter((n) => n.toLowerCase().includes(filter) || n === current);
+      }
+      setModelOptions(names, { preferred: current || state.chatModelsPreferred });
+    }
     function setModelOptions(models, { error, preferred } = {}) {
       const sel = $("sa_model");
       const sel2 = $("sa_settings_chat_model");
+      const vision = new Set(state.visionModels || []);
       const apply = (target) => {
         if (!target) {
           return;
         }
         let names = (models || []).map((n) => String(n || "").trim()).filter(Boolean);
-        names = [...names].sort((a, b) => chatModelSeniority(b) - chatModelSeniority(a) || a.localeCompare(b));
+        names = isOpenRouter() ? [...names].sort((a, b) => a.localeCompare(b)) : [...names].sort((a, b) => chatModelSeniority(b) - chatModelSeniority(a) || a.localeCompare(b));
         target.innerHTML = "";
         if (error) {
           const opt = document.createElement("option");
@@ -8052,14 +8081,14 @@ ${data.ui.help_extra}`.trim();
         if (!names.length) {
           const opt = document.createElement("option");
           opt.value = "";
-          opt.textContent = "No Ollama models \u2014 pull / Refresh";
+          opt.textContent = isOpenRouter() ? "\u041D\u0435\u0442 \u043C\u043E\u0434\u0435\u043B\u0435\u0439 OpenRouter \u2014 \u043F\u0440\u043E\u0432\u0435\u0440\u044C \u043A\u043B\u044E\u0447 / \u0444\u0438\u043B\u044C\u0442\u0440" : "No Ollama models \u2014 pull / Refresh";
           target.appendChild(opt);
           return;
         }
         for (const name of names) {
           const opt = document.createElement("option");
           opt.value = name;
-          opt.textContent = name;
+          opt.textContent = vision.has(name) ? `${name} \u{1F441}` : name;
           target.appendChild(opt);
         }
         const pick = resolveChatModel(names, preferred);
@@ -8113,10 +8142,17 @@ ${data.ui.help_extra}`.trim();
         "AssistentListModels",
         { baseUrl },
         (data) => {
+          if (data.provider) {
+            setProviderUi(data.provider);
+          }
           const models = data.models || [];
           const memoryModels = data.memory_models || [];
           const preferred = (data.preferred || "").trim();
+          state.chatModels = models;
+          state.visionModels = data.vision_models || [];
+          state.chatModelsPreferred = preferred;
           setModelOptions(models, { preferred });
+          renderChatModelOptions();
           setEmbedModelOptions(memoryModels);
           const pick = resolveChatModel(models, preferred);
           if (pick && $("sa_model")) {
@@ -8127,24 +8163,91 @@ ${data.ui.help_extra}`.trim();
             state.preferredModel = pick;
             localStorage.setItem(LS_MODEL, pick);
           }
-          setStatus(models.length ? `${models.length} chat \xB7 ${memoryModels.length} memory` : "No Ollama models (gpu-rent: ollama pull)");
+          const label = providerLabel();
+          setStatus(models.length ? `${label}: ${models.length} chat \xB7 ${memoryModels.length} memory` : isOpenRouter() ? "OpenRouter: \u043D\u0435\u0442 \u043C\u043E\u0434\u0435\u043B\u0435\u0439" : "No Ollama models (gpu-rent: ollama pull)");
           if (models.length) {
-            setOllamaHealth("ok", `Ollama \xB7 ${models.length}`, `\u0427\u0430\u0442-\u043C\u043E\u0434\u0435\u043B\u0435\u0439: ${models.length}, \u043F\u0430\u043C\u044F\u0442\u044C: ${memoryModels.length}`);
+            setOllamaHealth("ok", `${label} \xB7 ${models.length}`, `\u0427\u0430\u0442-\u043C\u043E\u0434\u0435\u043B\u0435\u0439: ${models.length}, \u043F\u0430\u043C\u044F\u0442\u044C: ${memoryModels.length}${data.memory_error ? ` (Ollama: ${data.memory_error})` : ""}`);
           } else {
-            setOllamaHealth("warn", "Ollama \xB7 0 \u043C\u043E\u0434\u0435\u043B\u0435\u0439", "\u041D\u0435\u0442 \u0447\u0430\u0442-\u043C\u043E\u0434\u0435\u043B\u0435\u0439 \u2014 \u0441\u0434\u0435\u043B\u0430\u0439 ollama pull");
+            setOllamaHealth("warn", `${label} \xB7 0 \u043C\u043E\u0434\u0435\u043B\u0435\u0439`, isOpenRouter() ? "\u041D\u0435\u0442 \u043C\u043E\u0434\u0435\u043B\u0435\u0439 \u2014 \u043F\u0440\u043E\u0432\u0435\u0440\u044C \u043A\u043B\u044E\u0447" : "\u041D\u0435\u0442 \u0447\u0430\u0442-\u043C\u043E\u0434\u0435\u043B\u0435\u0439 \u2014 \u0441\u0434\u0435\u043B\u0430\u0439 ollama pull");
           }
           saveSettings();
         },
         0,
         (err) => {
-          const msg = String(err || "Ollama unreachable");
+          const msg = String(err || `${providerLabel()} unreachable`);
+          state.chatModels = [];
           setStatus(msg);
           setModelOptions([], { error: msg });
-          setOllamaHealth("down", "Ollama \u2715", msg);
+          setOllamaHealth("down", `${providerLabel()} \u2715`, msg);
           appendMessage("error", msg);
         }
       );
     }
+    function setProviderUi(provider) {
+      state.provider = provider === "openrouter" ? "openrouter" : "ollama";
+      if ($("sa_provider")) {
+        $("sa_provider").value = state.provider;
+      }
+      const box = $("sa_openrouter_box");
+      if (box) {
+        box.hidden = !isOpenRouter();
+      }
+    }
+    function applyProviderInfo(data) {
+      if (!data || data.error) {
+        return;
+      }
+      setProviderUi(data.provider);
+      state.openrouterModelSaved = data.openrouter_model || "";
+      const status = $("sa_openrouter_key_status");
+      if (status) {
+        status.textContent = data.openrouter_key_set ? `\u041A\u043B\u044E\u0447 \u0441\u043E\u0445\u0440\u0430\u043D\u0451\u043D \u043D\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0435 ${data.openrouter_key_hint || ""}`.trim() : "\u041A\u043B\u044E\u0447 \u043D\u0435 \u0437\u0430\u0434\u0430\u043D";
+      }
+    }
+    function providerRequest(name, body) {
+      return new Promise((resolve) => {
+        if (typeof genericRequest !== "function") {
+          resolve(null);
+          return;
+        }
+        genericRequest(name, body || {}, (data) => resolve(data), 0, (err) => {
+          setStatus(String(err || `${name} failed`));
+          resolve(null);
+        });
+      });
+    }
+    async function loadProviderState() {
+      applyProviderInfo(await providerRequest("AssistentGetProvider", {}));
+    }
+    async function setChatProvider(provider) {
+      const data = await providerRequest("AssistentSetProvider", { provider });
+      applyProviderInfo(data);
+      state.chatModels = [];
+      refreshModels();
+      probeOllamaHealth();
+    }
+    async function saveOpenRouterKey(key) {
+      const data = await providerRequest("AssistentSetProvider", { api_key: key });
+      if (!data) {
+        return;
+      }
+      applyProviderInfo(data);
+      if ($("sa_openrouter_key")) {
+        $("sa_openrouter_key").value = "";
+      }
+      setStatus(key ? "\u041A\u043B\u044E\u0447 OpenRouter \u0441\u043E\u0445\u0440\u0430\u043D\u0451\u043D" : "\u041A\u043B\u044E\u0447 OpenRouter \u0443\u0434\u0430\u043B\u0451\u043D");
+      if (isOpenRouter()) {
+        refreshModels();
+      }
+    }
+    function persistOpenRouterModel() {
+      const model = $("sa_model")?.value || "";
+      if (!isOpenRouter() || !model || model === state.openrouterModelSaved) {
+        return;
+      }
+      state.openrouterModelSaved = model;
+      providerRequest("AssistentSetProvider", { model });
+    }
     function refreshInventory(done, opts = {}) {
       if (typeof genericRequest !== "function") {
         if (done) {
@@ -8932,19 +9035,19 @@ ${summary || "(\u043F\u0443\u0441\u0442\u043E)"}`;
         { baseUrl },
         (data) => {
           if (data?.error) {
-            setOllamaHealth("down", "Ollama \u2715", String(data.error));
+            setOllamaHealth("down", `${providerLabel()} \u2715`, String(data.error));
             return;
           }
           const chat = (data.models || []).length;
           const mem = (data.memory_models || []).length;
           if (!chat) {
-            setOllamaHealth("warn", "Ollama \xB7 0 \u043C\u043E\u0434\u0435\u043B\u0435\u0439", "\u041D\u0435\u0442 \u0447\u0430\u0442-\u043C\u043E\u0434\u0435\u043B\u0435\u0439 \u2014 \u0441\u0434\u0435\u043B\u0430\u0439 ollama pull");
+            setOllamaHealth("warn", `${providerLabel()} \xB7 0 \u043C\u043E\u0434\u0435\u043B\u0435\u0439`, isOpenRouter() ? "\u041D\u0435\u0442 \u043C\u043E\u0434\u0435\u043B\u0435\u0439 \u2014 \u043F\u0440\u043E\u0432\u0435\u0440\u044C \u043A\u043B\u044E\u0447" : "\u041D\u0435\u0442 \u0447\u0430\u0442-\u043C\u043E\u0434\u0435\u043B\u0435\u0439 \u2014 \u0441\u0434\u0435\u043B\u0430\u0439 ollama pull");
             return;
           }
-          setOllamaHealth("ok", `Ollama \xB7 ${chat}`, `\u0427\u0430\u0442-\u043C\u043E\u0434\u0435\u043B\u0435\u0439: ${chat}, \u043F\u0430\u043C\u044F\u0442\u044C: ${mem} \xB7 ${baseUrl}`);
+          setOllamaHealth("ok", `${providerLabel()} \xB7 ${chat}`, `\u0427\u0430\u0442-\u043C\u043E\u0434\u0435\u043B\u0435\u0439: ${chat}, \u043F\u0430\u043C\u044F\u0442\u044C: ${mem} \xB7 ${data.base_url || baseUrl}`);
         },
         0,
-        (err) => setOllamaHealth("down", "Ollama \u2715", `\u041D\u0435\u0442 \u0441\u0432\u044F\u0437\u0438: ${String(err || "")} \xB7 ${baseUrl}`)
+        (err) => setOllamaHealth("down", `${providerLabel()} \u2715`, `\u041D\u0435\u0442 \u0441\u0432\u044F\u0437\u0438: ${String(err || "")}`)
       );
     }
     function setView(view) {
@@ -9963,7 +10066,7 @@ ${HELP_TEXT}`);
       const persona = $("sa_persona")?.value || localStorage.getItem(LS_PERSONA) || "neutral";
       const model = $("sa_model")?.value;
       if (!model) {
-        setStatus("\u0412\u044B\u0431\u0435\u0440\u0438 \u043C\u043E\u0434\u0435\u043B\u044C Ollama \u0432 \u2699");
+        setStatus("\u0412\u044B\u0431\u0435\u0440\u0438 \u043C\u043E\u0434\u0435\u043B\u044C \u0447\u0430\u0442\u0430 \u0432 \u2699");
         refreshModels();
         return;
       }
@@ -10509,6 +10612,7 @@ ${HELP_TEXT}`);
       } catch (e) {
         console.warn("Assistent: chat sessions failed", e);
       }
+      await loadProviderState();
       loadConfig(localStorage.getItem(LS_PERSONA) || "neutral", () => {
         refreshModels();
         refreshInventory(() => {
@@ -10736,6 +10840,25 @@ ${HELP_TEXT}`);
       document.getElementById(TAB_BUTTON_ID)?.addEventListener("click", () => {
         setTimeout(() => $("sa_input")?.focus(), 80);
       });
+      $("sa_provider")?.addEventListener("change", () => {
+        setChatProvider($("sa_provider")?.value || "ollama");
+      });
+      $("sa_btn_openrouter_key_save")?.addEventListener("click", () => {
+        const key = String($("sa_openrouter_key")?.value || "").trim();
+        if (!key) {
+          setStatus("\u0412\u0441\u0442\u0430\u0432\u044C \u043A\u043B\u044E\u0447 OpenRouter");
+          return;
+        }
+        saveOpenRouterKey(key);
+      });
+      $("sa_openrouter_key")?.addEventListener("keydown", (e) => {
+        if (e.key === "Enter") {
+          e.preventDefault();
+          $("sa_btn_openrouter_key_save")?.click();
+        }
+      });
+      $("sa_btn_openrouter_key_clear")?.addEventListener("click", () => saveOpenRouterKey(""));
+      $("sa_openrouter_filter")?.addEventListener("input", () => renderChatModelOptions());
       $("sa_btn_refresh_models")?.addEventListener("click", () => {
         saveSettings();
         refreshModels();

Assets/assistent.css

@@ -1110,6 +1110,15 @@
     opacity: 0.8;
 }
 
+.sa-openrouter-box {
+    display: grid;
+    gap: 0.45rem;
+}
+
+.sa-openrouter-box[hidden] {
+    display: none;
+}
+
 .sa-danger-btn {
     color: #e06c75 !important;
 }

AssistentChatPipeline.cs

@@ -253,7 +253,9 @@ public partial class SwarmAssistentExtension
             {
                 await onHopStart(hop);
             }
-            (reply, lastRaw) = await CallOllamaChat(root, modelName, messages, stream: onDelta is not null, onDelta, pid);
+            (reply, lastRaw) = UseOpenRouter()
+                ? await CallOpenRouterChat(modelName, messages, stream: onDelta is not null, onDelta, pid)
+                : await CallOllamaChat(root, modelName, messages, stream: onDelta is not null, onDelta, pid);
             if (slimUtility)
             {
                 break;

AssistentConfig.cs

@@ -117,7 +117,10 @@ public sealed class AssistentConfig
         }
         try
         {
-            return JObject.Parse(File.ReadAllText(path, Encoding.UTF8));
+            // Share read/write/delete: Windows otherwise fails a concurrent SaveSettings with a sharing violation.
+            using FileStream fs = new(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite | FileShare.Delete);
+            using StreamReader reader = new(fs, Encoding.UTF8);
+            return JObject.Parse(reader.ReadToEnd());
         }
         catch (Exception ex)
         {
@@ -1671,7 +1674,32 @@ public sealed class AssistentConfig
             Directory.CreateDirectory(_overlayRoot);
             string path = Path.Combine(_overlayRoot, "settings.json");
             JObject merged = DeepMerge(LoadSettings(), settings ?? new JObject());
-            File.WriteAllText(path, merged.ToString(Newtonsoft.Json.Formatting.Indented), Encoding.UTF8);
+            WriteFileAtomic(path, merged.ToString(Newtonsoft.Json.Formatting.Indented));
+        }
+    }
+
+    /// <summary>Temp file + rename, retried briefly: readers never see a half-written file and a
+    /// transient lock (antivirus, editor, parallel read) does not fail the API call.</summary>
+    static void WriteFileAtomic(string path, string text)
+    {
+        string tmp = $"{path}.{Guid.NewGuid():N}.tmp";
+        File.WriteAllText(tmp, text, Encoding.UTF8);
+        for (int attempt = 0; ; attempt++)
+        {
+            try
+            {
+                File.Move(tmp, path, overwrite: true);
+                return;
+            }
+            catch (IOException) when (attempt < 10)
+            {
+                System.Threading.Thread.Sleep(25 * (attempt + 1));
+            }
+            catch
+            {
+                try { File.Delete(tmp); } catch { }
+                throw;
+            }
         }
     }
 

AssistentKnowledgeApi.cs

@@ -83,7 +83,8 @@ public partial class SwarmAssistentExtension
         };
     }
 
-    public async Task<JObject> AssistentSaveKnowledgeAttach(Session session, string persona, JArray attach)
+    /// <remarks>SwarmUI's API reflection has no JArray coercer — <c>string[]</c> is the supported list type.</remarks>
+    public async Task<JObject> AssistentSaveKnowledgeAttach(Session session, string persona, string[] attach = null)
     {
         await Task.CompletedTask;
         string pid = AssistentConfig.SafeId(persona);
@@ -104,9 +105,9 @@ public partial class SwarmAssistentExtension
             JArray cleaned = [];
             if (attach is not null)
             {
-                foreach (JToken t in attach)
+                foreach (string t in attach)
                 {
-                    string id = AssistentConfig.SafeId(t?.ToString());
+                    string id = AssistentConfig.SafeId(t);
                     if (id is not null)
                     {
                         cleaned.Add(id);

AssistentOllama.cs

@@ -21,6 +21,11 @@ public partial class SwarmAssistentExtension
     public async Task<JObject> AssistentListModels(Session session, string baseUrl)
     {
         string root = NormalizeBaseUrl(baseUrl);
+        return UseOpenRouter() ? await ListOpenRouterModels(root) : await ListOllamaModels(root);
+    }
+
+    async Task<JObject> ListOllamaModels(string root)
+    {
         try
         {
             using HttpResponseMessage resp = await HttpClient.GetAsync($"{root}/api/tags");
@@ -104,6 +109,7 @@ public partial class SwarmAssistentExtension
             return new JObject
             {
                 ["success"] = true,
+                ["provider"] = ProviderOllama,
                 ["base_url"] = root,
                 ["models"] = models,
                 ["memory_models"] = memoryModels,
@@ -363,7 +369,7 @@ public partial class SwarmAssistentExtension
         }
         catch (Exception ex)
         {
-            return new JObject { ["error"] = $"Ollama chat failed: {ex.Message}" };
+            return new JObject { ["error"] = $"{ProviderLabel()} chat failed: {ex.Message}" };
         }
     }
 
@@ -388,7 +394,7 @@ public partial class SwarmAssistentExtension
                 await ws.SendJson(new JObject
                 {
                     ["phase"] = "waiting_ollama",
-                    ["notice"] = "Waiting for Ollama…",
+                    ["notice"] = $"Waiting for {ProviderLabel()}…",
                 }, API.WebsocketTimeout);
             }
             async Task OnDelta(string delta)
@@ -435,7 +441,7 @@ public partial class SwarmAssistentExtension
         }
         catch (Exception ex)
         {
-            await ws.SendJson(new JObject { ["error"] = $"Ollama chat failed: {ex.Message}" }, API.WebsocketTimeout);
+            await ws.SendJson(new JObject { ["error"] = $"{ProviderLabel()} chat failed: {ex.Message}" }, API.WebsocketTimeout);
         }
         return null;
     }

AssistentOpenRouter.cs

@@ -0,0 +1,307 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Net.Http;
+using System.Text;
+using System.Threading.Tasks;
+using Newtonsoft.Json.Linq;
+using SwarmUI.Accounts;
+using SwarmUI.Utils;
+
+namespace Mrleo1nid.SwarmAssistent;
+
+/// <summary>OpenRouter chat transport (OpenAI-compatible /chat/completions). Chat only —
+/// memory embeddings stay on Ollama. The API key lives server-side in settings.json
+/// (or OPENROUTER_API_KEY) and is never sent back to the browser.</summary>
+public partial class SwarmAssistentExtension
+{
+    const string OpenRouterRoot = "https://openrouter.ai/api/v1";
+
+    const string ProviderOllama = "ollama";
+
+    const string ProviderOpenRouter = "openrouter";
+
+    string ChatProvider()
+    {
+        string p = Config?.LoadSettings()["provider"]?.ToString()?.Trim().ToLowerInvariant();
+        return p == ProviderOpenRouter ? ProviderOpenRouter : ProviderOllama;
+    }
+
+    bool UseOpenRouter() => ChatProvider() == ProviderOpenRouter;
+
+    string ProviderLabel() => UseOpenRouter() ? "OpenRouter" : "Ollama";
+
+    string OpenRouterKey()
+    {
+        string key = Config?.LoadSettings()["openrouter_api_key"]?.ToString()?.Trim();
+        return string.IsNullOrWhiteSpace(key) ? Environment.GetEnvironmentVariable("OPENROUTER_API_KEY")?.Trim() ?? "" : key;
+    }
+
+    /// <summary>Provider state for the settings pane. Only a masked tail of the key is exposed.</summary>
+    public async Task<JObject> AssistentGetProvider(Session session)
+    {
+        await Task.CompletedTask;
+        string key = OpenRouterKey();
+        return new JObject
+        {
+            ["success"] = true,
+            ["provider"] = ChatProvider(),
+            ["openrouter_key_set"] = key.Length > 0,
+            ["openrouter_key_hint"] = key.Length > 8 ? $"…{key[^4..]}" : "",
+            ["openrouter_model"] = Config.LoadSettings()["openrouter_model"]?.ToString() ?? "",
+        };
+    }
+
+    /// <summary>Sets provider / key / model. Null fields are left untouched; an empty <paramref name="api_key"/> clears the key.</summary>
+    public async Task<JObject> AssistentSetProvider(Session session, string provider = null, string api_key = null, string model = null)
+    {
+        await Task.CompletedTask;
+        JObject patch = [];
+        if (provider is not null)
+        {
+            string p = provider.Trim().ToLowerInvariant();
+            if (p != ProviderOllama && p != ProviderOpenRouter)
+            {
+                return new JObject { ["error"] = "provider must be ollama or openrouter" };
+            }
+            patch["provider"] = p;
+        }
+        if (api_key is not null)
+        {
+            patch["openrouter_api_key"] = api_key.Trim();
+        }
+        if (model is not null)
+        {
+            patch["openrouter_model"] = model.Trim();
+        }
+        Config.SaveSettings(patch);
+        return await AssistentGetProvider(session);
+    }
+
+    HttpRequestMessage OpenRouterRequest(HttpMethod method, string path, HttpContent content = null)
+    {
+        HttpRequestMessage req = new(method, $"{OpenRouterRoot}{path}") { Content = content };
+        string key = OpenRouterKey();
+        if (key.Length > 0)
+        {
+            req.Headers.TryAddWithoutValidation("Authorization", $"Bearer {key}");
+        }
+        req.Headers.TryAddWithoutValidation("HTTP-Referer", "https://github.com/mcmonkeyprojects/SwarmUI");
+        req.Headers.TryAddWithoutValidation("X-Title", "SwarmUI Assistent");
+        return req;
+    }
+
+    /// <summary>OpenRouter chat models + Ollama embed models (best effort) for memory.</summary>
+    async Task<JObject> ListOpenRouterModels(string ollamaRoot)
+    {
+        if (OpenRouterKey().Length == 0)
+        {
+            return new JObject { ["error"] = "OpenRouter: API key not set" };
+        }
+        JArray models = [];
+        JArray visionModels = [];
+        try
+        {
+            using HttpRequestMessage req = OpenRouterRequest(HttpMethod.Get, "/models");
+            using HttpResponseMessage resp = await HttpClient.SendAsync(req);
+            string body = await resp.Content.ReadAsStringAsync();
+            if (!resp.IsSuccessStatusCode)
+            {
+                return new JObject { ["error"] = $"OpenRouter /models HTTP {(int)resp.StatusCode}: {Clip(body, 400)}" };
+            }
+            IEnumerable<JObject> entries = (JObject.Parse(body)["data"] as JArray ?? []).OfType<JObject>()
+                .Where(m => !string.IsNullOrWhiteSpace(m["id"]?.ToString()))
+                .Where(m => (m["architecture"]?["output_modalities"] as JArray)?.Any(t => t.ToString() == "text") ?? true)
+                .OrderBy(m => m["id"].ToString(), StringComparer.OrdinalIgnoreCase);
+            foreach (JObject m in entries)
+            {
+                string id = m["id"].ToString();
+                models.Add(id);
+                if ((m["architecture"]?["input_modalities"] as JArray)?.Any(t => t.ToString() == "image") == true)
+                {
+                    visionModels.Add(id);
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            return new JObject { ["error"] = $"OpenRouter unreachable: {ex.Message}" };
+        }
+        JArray memoryModels = [];
+        JObject ollama = await ListOllamaModels(ollamaRoot);
+        if (ollama["memory_models"] is JArray mem)
+        {
+            memoryModels = mem;
+        }
+        string preferred = Config.LoadSettings()["openrouter_model"]?.ToString()?.Trim() ?? "";
+        return new JObject
+        {
+            ["success"] = true,
+            ["provider"] = ProviderOpenRouter,
+            ["base_url"] = OpenRouterRoot,
+            ["models"] = models,
+            ["vision_models"] = visionModels,
+            ["memory_models"] = memoryModels,
+            ["memory_error"] = ollama["error"],
+            ["preferred"] = models.Any(t => t.ToString() == preferred) ? preferred : "",
+        };
+    }
+
+    /// <summary>Ollama-style messages (<c>images</c> = raw base64) → OpenAI content parts.</summary>
+    static JArray ToOpenAiMessages(List<JObject> ollamaMessages)
+    {
+        JArray result = [];
+        foreach (JObject m in ollamaMessages)
+        {
+            string role = m["role"]?.ToString() ?? "user";
+            string text = m["content"]?.ToString() ?? "";
+            if (m["images"] is JArray images && images.Count > 0)
+            {
+                JArray parts = [];
+                if (text.Length > 0)
+                {
+                    parts.Add(new JObject { ["type"] = "text", ["text"] = text });
+                }
+                foreach (JToken img in images)
+                {
+                    string s = img.ToString();
+                    string url = s.StartsWith("data:", StringComparison.OrdinalIgnoreCase) || s.StartsWith("http", StringComparison.OrdinalIgnoreCase)
+                        ? s
+                        : $"data:image/jpeg;base64,{s}";
+                    parts.Add(new JObject { ["type"] = "image_url", ["image_url"] = new JObject { ["url"] = url } });
+                }
+                result.Add(new JObject { ["role"] = role, ["content"] = parts });
+            }
+            else
+            {
+                result.Add(new JObject { ["role"] = role, ["content"] = text });
+            }
+        }
+        return result;
+    }
+
+    /// <summary>Copies OpenAI usage into the Ollama field names the pipeline / UI already read.</summary>
+    static void MapUsage(JObject raw, JToken usage)
+    {
+        if (usage is JObject u && u["prompt_tokens"]?.Value<int?>() is int prompt && prompt > 0)
+        {
+            raw["prompt_eval_count"] = prompt;
+        }
+    }
+
+    async Task<(string reply, JObject raw)> CallOpenRouterChat(
+        string modelName,
+        List<JObject> ollamaMessages,
+        bool stream,
+        Func<string, Task> onDelta,
+        string personaId = null)
+    {
+        if (OpenRouterKey().Length == 0)
+        {
+            throw new Exception("OpenRouter API key not set (⚙ → Модели)");
+        }
+        int numPredict = Config.LoadAssistant(AssistentConfig.SafeId(personaId) ?? Config.DefaultPersonaId())["num_predict"]?.Value<int?>()
+            ?? 3072;
+        if (numPredict < 512)
+        {
+            numPredict = 512;
+        }
+        JObject payload = new()
+        {
+            ["model"] = modelName,
+            ["stream"] = stream,
+            ["messages"] = ToOpenAiMessages(ollamaMessages),
+            ["max_tokens"] = numPredict,
+            ["usage"] = new JObject { ["include"] = true },
+        };
+        using StringContent content = new(payload.ToString(Newtonsoft.Json.Formatting.None), Encoding.UTF8, "application/json");
+        using HttpRequestMessage req = OpenRouterRequest(HttpMethod.Post, "/chat/completions", content);
+        using HttpResponseMessage resp = await HttpClient.SendAsync(req, stream
+            ? HttpCompletionOption.ResponseHeadersRead
+            : HttpCompletionOption.ResponseContentRead);
+        if (!resp.IsSuccessStatusCode)
+        {
+            string errBody = await resp.Content.ReadAsStringAsync();
+            throw new Exception($"OpenRouter HTTP {(int)resp.StatusCode}: {Clip(errBody, 800)}");
+        }
+        if (!stream)
+        {
+            string body = await resp.Content.ReadAsStringAsync();
+            JObject parsed = JObject.Parse(body);
+            if (parsed["error"] is JToken err)
+            {
+                throw new Exception($"OpenRouter: {Clip(err["message"]?.ToString() ?? err.ToString(), 800)}");
+            }
+            MapUsage(parsed, parsed["usage"]);
+            string reply = parsed["choices"]?[0]?["message"]?["content"]?.ToString() ?? "";
+            if (TryTruncateAtCompleteFence(reply, out string cut))
+            {
+                reply = cut;
+            }
+            return (reply, parsed);
+        }
+        StringBuilder full = new();
+        JObject last = [];
+        await using Stream streamBody = await resp.Content.ReadAsStreamAsync();
+        using StreamReader reader = new(streamBody, Encoding.UTF8);
+        while (true)
+        {
+            string line = await reader.ReadLineAsync();
+            if (line is null)
+            {
+                break;
+            }
+            // SSE: skip blanks and ": OPENROUTER PROCESSING" keep-alive comments.
+            if (!line.StartsWith("data:", StringComparison.Ordinal))
+            {
+                continue;
+            }
+            string data = line[5..].Trim();
+            if (data == "[DONE]")
+            {
+                break;
+            }
+            JObject chunk;
+            try
+            {
+                chunk = JObject.Parse(data);
+            }
+            catch (Exception)
+            {
+                continue;
+            }
+            if (chunk["error"] is JToken err)
+            {
+                throw new Exception($"OpenRouter: {Clip(err["message"]?.ToString() ?? err.ToString(), 800)}");
+            }
+            last["id"] = chunk["id"];
+            last["model"] = chunk["model"];
+            MapUsage(last, chunk["usage"]);
+            string delta = chunk["choices"]?[0]?["delta"]?["content"]?.ToString() ?? "";
+            if (string.IsNullOrEmpty(delta))
+            {
+                continue;
+            }
+            full.Append(delta);
+            // Same early stop as the Ollama path: closed ```json``` patch → stop reading.
+            if (TryTruncateAtCompleteFence(full.ToString(), out string cut))
+            {
+                string extra = full.Length > cut.Length ? full.ToString(cut.Length, full.Length - cut.Length) : "";
+                full.Clear();
+                full.Append(cut);
+                int keep = delta.Length - extra.Length;
+                if (onDelta is not null && keep > 0)
+                {
+                    await onDelta(delta[..keep]);
+                }
+                break;
+            }
+            if (onDelta is not null)
+            {
+                await onDelta(delta);
+            }
+        }
+        return (full.ToString(), last);
+    }
+}

AssistentSqliteBootstrap.cs

@@ -35,14 +35,7 @@ internal static class AssistentSqliteBootstrap
         {
             return;
         }
-        string[] relPaths =
+        foreach (string rel in CandidatePaths())
-        [
-            Path.Combine("runtimes", "linux-x64", "native", "libe_sqlite3.so"),
-            Path.Combine("runtimes", "linux-x64", "native", "e_sqlite3.so"),
-            "libe_sqlite3.so",
-            "e_sqlite3.so",
-        ];
-        foreach (string rel in relPaths)
         {
             string path = Path.Combine(extDir, rel);
             if (!File.Exists(path))
@@ -51,7 +44,8 @@ internal static class AssistentSqliteBootstrap
             }
             try
             {
-                NativeLibrary.Load(path);
+                IntPtr handle = NativeLibrary.Load(path);
+                RegisterResolver(handle);
                 return;
             }
             catch (Exception ex)
@@ -60,4 +54,45 @@ internal static class AssistentSqliteBootstrap
             }
         }
     }
+
+    /// <summary>Native e_sqlite3 locations for the current OS / arch, most specific first.</summary>
+    static string[] CandidatePaths()
+    {
+        string arch = RuntimeInformation.ProcessArchitecture switch
+        {
+            Architecture.Arm64 => "arm64",
+            Architecture.X86 => "x86",
+            Architecture.Arm => "arm",
+            _ => "x64",
+        };
+        if (OperatingSystem.IsWindows())
+        {
+            return [Path.Combine("runtimes", $"win-{arch}", "native", "e_sqlite3.dll"), "e_sqlite3.dll"];
+        }
+        if (OperatingSystem.IsMacOS())
+        {
+            return [Path.Combine("runtimes", $"osx-{arch}", "native", "libe_sqlite3.dylib"), "libe_sqlite3.dylib"];
+        }
+        return
+        [
+            Path.Combine("runtimes", $"linux-{arch}", "native", "libe_sqlite3.so"),
+            Path.Combine("runtimes", $"linux-{arch}", "native", "e_sqlite3.so"),
+            "libe_sqlite3.so",
+            "e_sqlite3.so",
+        ];
+    }
+
+    /// <summary>The provider's [DllImport("e_sqlite3")] would otherwise probe the host dir, not the extension dir.</summary>
+    static void RegisterResolver(IntPtr handle)
+    {
+        try
+        {
+            NativeLibrary.SetDllImportResolver(typeof(SQLite3Provider_e_sqlite3).Assembly,
+                (name, _, _) => name.Contains("e_sqlite3", StringComparison.OrdinalIgnoreCase) ? handle : IntPtr.Zero);
+        }
+        catch (InvalidOperationException)
+        {
+            // A resolver is already set for this assembly — the preloaded handle still helps on Windows.
+        }
+    }
 }

AssistentVram.cs

@@ -26,6 +26,10 @@ public partial class SwarmAssistentExtension
         {
             return new JObject { ["error"] = "model is required" };
         }
+        if (UseOpenRouter())
+        {
+            return new JObject { ["success"] = true, ["parked"] = false, ["skipped"] = "remote provider" };
+        }
         if (LooksLikeEmbedModel(name))
         {
             return new JObject { ["success"] = true, ["parked"] = false, ["skipped"] = "memory model — never parked" };
@@ -80,6 +84,11 @@ public partial class SwarmAssistentExtension
         {
             return new JObject { ["error"] = "model is required" };
         }
+        if (UseOpenRouter())
+        {
+            // Remote model is always "resident" — lets the UI clear its cold-load flag.
+            return new JObject { ["success"] = true, ["warmed"] = true, ["skipped"] = "already_resident", ["model"] = name };
+        }
         if (LooksLikeEmbedModel(name))
         {
             return new JObject { ["success"] = true, ["warmed"] = false, ["skipped"] = "memory model" };

SwarmAssistentExtension.cs

@@ -33,7 +33,7 @@ public partial class SwarmAssistentExtension : Extension
         ExtensionAuthor = "mrleo1nid";
         Description = "Collaborative Krea 2 assistant: Ollama chat, persona presets, vector memory, model cards, Generate loop.";
         License = "MIT";
-        Version = "0.16.1";
+        Version = "0.17.0";
         Tags = ["tabs", "ui", "llm", "ollama", "krea", "inpaint", "memory", "knowledge", "heard", "books"];
     }
 
@@ -46,6 +46,8 @@ public partial class SwarmAssistentExtension : Extension
         API.RegisterAPICall(AssistentListPersonas, false, PermUse);
         API.RegisterAPICall(AssistentGetConfig, false, PermUse);
         API.RegisterAPICall(AssistentSaveSettings, true, PermUse);
+        API.RegisterAPICall(AssistentGetProvider, false, PermUse);
+        API.RegisterAPICall(AssistentSetProvider, true, PermUse);
         API.RegisterAPICall(AssistentListInventory, false, PermUse);
         API.RegisterAPICall(AssistentChat, true, PermUse);
         API.RegisterAPICall(AssistentChatWS, true, PermUse);
@@ -81,7 +83,7 @@ public partial class SwarmAssistentExtension : Extension
         API.RegisterAPICall(AssistentForgetUserPref, true, PermUse);
         API.RegisterAPICall(AssistentClearUserPrefs, true, PermUse);
         API.RegisterAPICall(AssistentClearMemory, true, PermUse);
-        Logs.Init("Swarm Assistent extension loaded (0.16.1 knowledge books hub)");
+        Logs.Init("Swarm Assistent extension loaded (0.17.0 OpenRouter provider)");
     }
 
     int CfgInt(string key, int fallback)

SwarmAssistentExtension.csproj

@@ -29,7 +29,7 @@
                 Condition="$([System.String]::Copy('%(RuntimeCopyLocalItems.DestinationSubPath)').Contains('e_sqlite3'))" />
         </ItemGroup>
         <Copy SourceFiles="@(_SqliteNative)"
-            DestinationFiles="$(OutputPath)@(_SqliteNative->'%(RuntimeCopyLocalItems.DestinationSubPath)')"
+            DestinationFiles="@(_SqliteNative->'$(OutputPath)%(DestinationSubPath)')"
             SkipUnchangedFiles="true"
             Condition="'@(_SqliteNative)' != ''" />
         <Copy SourceFiles="@(_SqliteNative)"

Tabs/Text2Image/Assistent.html

@@ -92,7 +92,7 @@
                                     <option value="write_prompt">Написать промпт</option>
                                 </select>
                                 <span class="sa-mode-badge" id="sa_mode_badge" title="Активный pack">обычный</span>
-                                <select id="sa_model" class="sa-select sa-model-select" title="Модель Ollama (чат)" aria-label="Модель Ollama">
+                                <select id="sa_model" class="sa-select sa-model-select" title="Модель чата" aria-label="Модель чата">
                                     <option value="">Загрузка моделей…</option>
                                 </select>
                             </div>
@@ -179,7 +179,26 @@
                         <div class="sa-skills-box" id="sa_skills_box"></div>
                     </div>
                     <div class="sa-spane" data-spane="models" hidden>
-                        <p class="sa-settings-hint">Ollama и модель эмбеддингов для крафт-памяти.</p>
+                        <p class="sa-settings-hint">Провайдер чата и модель эмбеддингов для крафт-памяти. Память всегда считается через Ollama.</p>
+                        <label>Провайдер чата
+                            <select id="sa_provider" class="sa-select">
+                                <option value="ollama">Ollama (локально)</option>
+                                <option value="openrouter">OpenRouter</option>
+                            </select>
+                        </label>
+                        <div class="sa-openrouter-box" id="sa_openrouter_box" hidden>
+                            <label>OpenRouter API key
+                                <input type="password" id="sa_openrouter_key" autocomplete="off" spellcheck="false" placeholder="sk-or-v1-…" />
+                            </label>
+                            <div class="sa-settings-row">
+                                <button type="button" class="basic-button sa-primary" id="sa_btn_openrouter_key_save">Сохранить ключ</button>
+                                <button type="button" class="basic-button sa-danger-btn" id="sa_btn_openrouter_key_clear">Удалить ключ</button>
+                                <span class="sa-settings-health" id="sa_openrouter_key_status">Ключ не задан</span>
+                            </div>
+                            <label>Фильтр моделей
+                                <input type="text" id="sa_openrouter_filter" autocomplete="off" spellcheck="false" placeholder="например: claude, gpt, qwen, :free" />
+                            </label>
+                        </div>
                         <label>Ollama URL <input type="text" id="sa_base_url" value="http://127.0.0.1:11434" /></label>
                         <label>Модель чата
                             <select id="sa_settings_chat_model" class="sa-select" title="Синхрон с шапкой">
@@ -194,7 +213,7 @@
                         <div class="sa-settings-row">
                             <button type="button" class="basic-button" id="sa_btn_refresh_models">Обновить модели</button>
                             <button type="button" class="basic-button" id="sa_btn_refresh_inventory">Обновить inventory</button>
-                            <button type="button" class="basic-button" id="sa_btn_settings_health">Проверить Ollama</button>
+                            <button type="button" class="basic-button" id="sa_btn_settings_health">Проверить связь</button>
                         </div>
                         <div class="sa-settings-health" id="sa_settings_health_line">Ollama · …</div>
                     </div>

src/app.js

@@ -132,6 +132,12 @@ import { DEFAULT_ASPECT_TABLE, applyAspectTableFromObject as mergeAspectTable }
         waitImageTimer: null,
         lastImageDataUrl: null,
         preferredModel: null,
+        /** Chat provider mirrored from server settings: 'ollama' | 'openrouter'. */
+        provider: 'ollama',
+        chatModels: [],
+        chatModelsPreferred: '',
+        visionModels: [],
+        openrouterModelSaved: '',
         inventory: { loras: [], checkpoints: [], wildcards: [], has_civitai_key: false },
         inventoryFetchedAt: 0,
         streamEl: null,
@@ -2066,7 +2072,7 @@ import { DEFAULT_ASPECT_TABLE, applyAspectTableFromObject as mergeAspectTable }
         }
         const model = $('sa_model')?.value;
         if (!model) {
-            setStatus('Выбери модель Ollama в ⚙');
+            setStatus('Выбери модель чата в ⚙');
             return false;
         }
         const { prompt, foldCount } = buildCompressUserPrompt();
@@ -2240,7 +2246,7 @@ import { DEFAULT_ASPECT_TABLE, applyAspectTableFromObject as mergeAspectTable }
         }
         const model = $('sa_model')?.value;
         if (!model) {
-            setStatus('Выбери модель Ollama в ⚙');
+            setStatus('Выбери модель чата в ⚙');
             return;
         }
         state.busy = true;
@@ -6373,6 +6379,7 @@ import { DEFAULT_ASPECT_TABLE, applyAspectTableFromObject as mergeAspectTable }
         localStorage.setItem(LS_AUTO_CRITIQUE, $('sa_auto_critique')?.checked ? '1' : '0');
         localStorage.setItem(LS_AUTO_DOWNLOAD, $('sa_auto_download')?.checked ? '1' : '0');
         localStorage.setItem(LS_PARK_LLM, $('sa_park_llm')?.checked ? '1' : '0');
+        persistOpenRouterModel();
         persistServerSettings();
         saveUiStateToDisk();
     }
@@ -6966,25 +6973,54 @@ import { DEFAULT_ASPECT_TABLE, applyAspectTableFromObject as mergeAspectTable }
         if (!list.length) {
             return '';
         }
+        const ls = state.preferredModel || localStorage.getItem(LS_MODEL) || '';
+        if (isOpenRouter()) {
+            // Server-side openrouter_model wins; no size heuristic over hundreds of remote ids.
+            if (apiPreferred && list.includes(apiPreferred)) {
+                return apiPreferred;
+            }
+            return ls && list.includes(ls) ? ls : list[0];
+        }
         const preferred = apiPreferred && list.includes(apiPreferred)
             ? apiPreferred
             : pickSeniorChatModel(list);
-        const ls = state.preferredModel || localStorage.getItem(LS_MODEL) || '';
         if (ls && list.includes(ls)) {
             return ls;
         }
         return preferred || list[0];
     }
 
+    function isOpenRouter() {
+        return state.provider === 'openrouter';
+    }
+
+    function providerLabel() {
+        return isOpenRouter() ? 'OpenRouter' : 'Ollama';
+    }
+
+    /** Re-renders both model selects from state.chatModels with the OpenRouter text filter applied. */
+    function renderChatModelOptions() {
+        const current = $('sa_model')?.value || '';
+        const filter = isOpenRouter() ? String($('sa_openrouter_filter')?.value || '').trim().toLowerCase() : '';
+        let names = state.chatModels;
+        if (filter) {
+            names = names.filter((n) => n.toLowerCase().includes(filter) || n === current);
+        }
+        setModelOptions(names, { preferred: current || state.chatModelsPreferred });
+    }
+
     function setModelOptions(models, { error, preferred } = {}) {
         const sel = $('sa_model');
         const sel2 = $('sa_settings_chat_model');
+        const vision = new Set(state.visionModels || []);
         const apply = (target) => {
             if (!target) {
                 return;
             }
             let names = (models || []).map((n) => String(n || '').trim()).filter(Boolean);
-            names = [...names].sort((a, b) => chatModelSeniority(b) - chatModelSeniority(a) || a.localeCompare(b));
+            names = isOpenRouter()
+                ? [...names].sort((a, b) => a.localeCompare(b))
+                : [...names].sort((a, b) => chatModelSeniority(b) - chatModelSeniority(a) || a.localeCompare(b));
             target.innerHTML = '';
             if (error) {
                 const opt = document.createElement('option');
@@ -6998,14 +7034,14 @@ import { DEFAULT_ASPECT_TABLE, applyAspectTableFromObject as mergeAspectTable }
             if (!names.length) {
                 const opt = document.createElement('option');
                 opt.value = '';
-                opt.textContent = 'No Ollama models — pull / Refresh';
+                opt.textContent = isOpenRouter() ? 'Нет моделей OpenRouter — проверь ключ / фильтр' : 'No Ollama models — pull / Refresh';
                 target.appendChild(opt);
                 return;
             }
             for (const name of names) {
                 const opt = document.createElement('option');
                 opt.value = name;
-                opt.textContent = name;
+                opt.textContent = vision.has(name) ? `${name} 👁` : name;
                 target.appendChild(opt);
             }
             const pick = resolveChatModel(names, preferred);
@@ -7061,10 +7097,17 @@ import { DEFAULT_ASPECT_TABLE, applyAspectTableFromObject as mergeAspectTable }
             'AssistentListModels',
             { baseUrl },
             (data) => {
+                if (data.provider) {
+                    setProviderUi(data.provider);
+                }
                 const models = data.models || [];
                 const memoryModels = data.memory_models || [];
                 const preferred = (data.preferred || '').trim();
+                state.chatModels = models;
+                state.visionModels = data.vision_models || [];
+                state.chatModelsPreferred = preferred;
                 setModelOptions(models, { preferred });
+                renderChatModelOptions();
                 setEmbedModelOptions(memoryModels);
                 const pick = resolveChatModel(models, preferred);
                 if (pick && $('sa_model')) {
@@ -7075,25 +7118,105 @@ import { DEFAULT_ASPECT_TABLE, applyAspectTableFromObject as mergeAspectTable }
                     state.preferredModel = pick;
                     localStorage.setItem(LS_MODEL, pick);
                 }
-                setStatus(models.length ? `${models.length} chat · ${memoryModels.length} memory` : 'No Ollama models (gpu-rent: ollama pull)');
+                const label = providerLabel();
+                setStatus(models.length
+                    ? `${label}: ${models.length} chat · ${memoryModels.length} memory`
+                    : (isOpenRouter() ? 'OpenRouter: нет моделей' : 'No Ollama models (gpu-rent: ollama pull)'));
                 if (models.length) {
-                    setOllamaHealth('ok', `Ollama · ${models.length}`, `Чат-моделей: ${models.length}, память: ${memoryModels.length}`);
+                    setOllamaHealth('ok', `${label} · ${models.length}`, `Чат-моделей: ${models.length}, память: ${memoryModels.length}${data.memory_error ? ` (Ollama: ${data.memory_error})` : ''}`);
                 } else {
-                    setOllamaHealth('warn', 'Ollama · 0 моделей', 'Нет чат-моделей — сделай ollama pull');
+                    setOllamaHealth('warn', `${label} · 0 моделей`, isOpenRouter() ? 'Нет моделей — проверь ключ' : 'Нет чат-моделей — сделай ollama pull');
                 }
                 saveSettings();
             },
             0,
             (err) => {
-                const msg = String(err || 'Ollama unreachable');
+                const msg = String(err || `${providerLabel()} unreachable`);
+                state.chatModels = [];
                 setStatus(msg);
                 setModelOptions([], { error: msg });
-                setOllamaHealth('down', 'Ollama ✕', msg);
+                setOllamaHealth('down', `${providerLabel()} ✕`, msg);
                 appendMessage('error', msg);
             },
         );
     }
 
+    /** Syncs the provider select / OpenRouter box with a provider id; no requests. */
+    function setProviderUi(provider) {
+        state.provider = provider === 'openrouter' ? 'openrouter' : 'ollama';
+        if ($('sa_provider')) {
+            $('sa_provider').value = state.provider;
+        }
+        const box = $('sa_openrouter_box');
+        if (box) {
+            box.hidden = !isOpenRouter();
+        }
+    }
+
+    function applyProviderInfo(data) {
+        if (!data || data.error) {
+            return;
+        }
+        setProviderUi(data.provider);
+        state.openrouterModelSaved = data.openrouter_model || '';
+        const status = $('sa_openrouter_key_status');
+        if (status) {
+            status.textContent = data.openrouter_key_set
+                ? `Ключ сохранён на сервере ${data.openrouter_key_hint || ''}`.trim()
+                : 'Ключ не задан';
+        }
+    }
+
+    function providerRequest(name, body) {
+        return new Promise((resolve) => {
+            if (typeof genericRequest !== 'function') {
+                resolve(null);
+                return;
+            }
+            genericRequest(name, body || {}, (data) => resolve(data), 0, (err) => {
+                setStatus(String(err || `${name} failed`));
+                resolve(null);
+            });
+        });
+    }
+
+    async function loadProviderState() {
+        applyProviderInfo(await providerRequest('AssistentGetProvider', {}));
+    }
+
+    async function setChatProvider(provider) {
+        const data = await providerRequest('AssistentSetProvider', { provider });
+        applyProviderInfo(data);
+        state.chatModels = [];
+        refreshModels();
+        probeOllamaHealth();
+    }
+
+    async function saveOpenRouterKey(key) {
+        const data = await providerRequest('AssistentSetProvider', { api_key: key });
+        if (!data) {
+            return;
+        }
+        applyProviderInfo(data);
+        if ($('sa_openrouter_key')) {
+            $('sa_openrouter_key').value = '';
+        }
+        setStatus(key ? 'Ключ OpenRouter сохранён' : 'Ключ OpenRouter удалён');
+        if (isOpenRouter()) {
+            refreshModels();
+        }
+    }
+
+    /** Persists the selected OpenRouter model server-side (only when it actually changed). */
+    function persistOpenRouterModel() {
+        const model = $('sa_model')?.value || '';
+        if (!isOpenRouter() || !model || model === state.openrouterModelSaved) {
+            return;
+        }
+        state.openrouterModelSaved = model;
+        providerRequest('AssistentSetProvider', { model });
+    }
+
     function refreshInventory(done, opts = {}) {
         if (typeof genericRequest !== 'function') {
             if (done) {
@@ -7922,19 +8045,19 @@ import { DEFAULT_ASPECT_TABLE, applyAspectTableFromObject as mergeAspectTable }
             { baseUrl },
             (data) => {
                 if (data?.error) {
-                    setOllamaHealth('down', 'Ollama ✕', String(data.error));
+                    setOllamaHealth('down', `${providerLabel()} ✕`, String(data.error));
                     return;
                 }
                 const chat = (data.models || []).length;
                 const mem = (data.memory_models || []).length;
                 if (!chat) {
-                    setOllamaHealth('warn', 'Ollama · 0 моделей', 'Нет чат-моделей — сделай ollama pull');
+                    setOllamaHealth('warn', `${providerLabel()} · 0 моделей`, isOpenRouter() ? 'Нет моделей — проверь ключ' : 'Нет чат-моделей — сделай ollama pull');
                     return;
                 }
-                setOllamaHealth('ok', `Ollama · ${chat}`, `Чат-моделей: ${chat}, память: ${mem} · ${baseUrl}`);
+                setOllamaHealth('ok', `${providerLabel()} · ${chat}`, `Чат-моделей: ${chat}, память: ${mem} · ${data.base_url || baseUrl}`);
             },
             0,
-            (err) => setOllamaHealth('down', 'Ollama ✕', `Нет связи: ${String(err || '')} · ${baseUrl}`),
+            (err) => setOllamaHealth('down', `${providerLabel()} ✕`, `Нет связи: ${String(err || '')}`),
         );
     }
 
@@ -9005,7 +9128,7 @@ import { DEFAULT_ASPECT_TABLE, applyAspectTableFromObject as mergeAspectTable }
         const persona = $('sa_persona')?.value || localStorage.getItem(LS_PERSONA) || 'neutral';
         const model = $('sa_model')?.value;
         if (!model) {
-            setStatus('Выбери модель Ollama в ⚙');
+            setStatus('Выбери модель чата в ⚙');
             refreshModels();
             return;
         }
@@ -9594,6 +9717,7 @@ import { DEFAULT_ASPECT_TABLE, applyAspectTableFromObject as mergeAspectTable }
         } catch (e) {
             console.warn('Assistent: chat sessions failed', e);
         }
+        await loadProviderState();
         loadConfig(localStorage.getItem(LS_PERSONA) || 'neutral', () => {
             refreshModels();
             refreshInventory(() => {
@@ -9830,6 +9954,25 @@ import { DEFAULT_ASPECT_TABLE, applyAspectTableFromObject as mergeAspectTable }
         document.getElementById(TAB_BUTTON_ID)?.addEventListener('click', () => {
             setTimeout(() => $('sa_input')?.focus(), 80);
         });
+        $('sa_provider')?.addEventListener('change', () => {
+            setChatProvider($('sa_provider')?.value || 'ollama');
+        });
+        $('sa_btn_openrouter_key_save')?.addEventListener('click', () => {
+            const key = String($('sa_openrouter_key')?.value || '').trim();
+            if (!key) {
+                setStatus('Вставь ключ OpenRouter');
+                return;
+            }
+            saveOpenRouterKey(key);
+        });
+        $('sa_openrouter_key')?.addEventListener('keydown', (e) => {
+            if (e.key === 'Enter') {
+                e.preventDefault();
+                $('sa_btn_openrouter_key_save')?.click();
+            }
+        });
+        $('sa_btn_openrouter_key_clear')?.addEventListener('click', () => saveOpenRouterKey(''));
+        $('sa_openrouter_filter')?.addEventListener('input', () => renderChatModelOptions());
         $('sa_btn_refresh_models')?.addEventListener('click', () => {
             saveSettings();
             refreshModels();