Add support for message history pagination, preserve scroll in rendering, and improve draft/message workflows.

src/services/chatService.js

@@ -27,10 +27,10 @@ import { supportsReasoning } from "../../public/js/modelCapabilities.js";
 import {VISION_EVIDENCE_GUIDANCE} from "./visionAnalysis.js";
 
 export function createChatService(repositories, modelService, config, webSearchProvider = new SearXNGSearchProvider(config), attachmentService = null, visionDebugService = null) {
-    const formatChatMessage = row => {
+    const formatChatMessage = (row, related = null) => {
         const message = formatBaseChatMessage(row);
         if (message?.role === "bot") {
-            const versions = repositories.listMessageVersions(row.id);
+            const versions = related?.versions ? related.versions.get(row.id) || [] : repositories.listMessageVersions(row.id);
             message.versionCount = versions.length || 1;
             message.versionIndex = versions.length ? Number(row.retry_active_index || 0) : 0;
             if (versions.length) message.responseVersions = versions.map(version => ({
@@ -38,7 +38,7 @@ export function createChatService(repositories, modelService, config, webSearchP
                 sources: parseSources(version.sources), modelName: version.model_name, createdAt: version.created_at
             }));
         }
-        const attachments = row && attachmentService?.list(row.id);
+        const attachments = row && (related?.attachments ? related.attachments.get(row.id) : attachmentService?.list(row.id));
         return message && attachments?.length ? { ...message, attachments } : message;
     };
     const chatGenerationQueues = new Map();
@@ -198,6 +198,9 @@ export function createChatService(repositories, modelService, config, webSearchP
 
         const latestSummarized = summarizable[summarizable.length - 1];
         if (!latestSummarized || !summary) return;
+        const current = repositories.getChat(chatId, user);
+        // A manual correction or branch switch during generation wins over the stale summary.
+        if (!current || current.context_summary !== session.context_summary || current.context_summary_message_id !== session.context_summary_message_id) return;
         repositories.updateChatContextSummary(chatId, user, clampSummary(summary), latestSummarized.id);
     };
 
@@ -573,18 +576,17 @@ export function createChatService(repositories, modelService, config, webSearchP
             }
         });
 
-    const listActiveBranchMessages = (chatId) => repositories.listActiveBranchMessages(chatId).map((row) => {
-        const message = formatChatMessage(row);
-        const siblings = repositories.listSiblingChatMessages(chatId, row.role, row.parent_message_id);
-        const siblingIndex = siblings.findIndex((sibling) => sibling.id === row.id);
-        return {
-            ...message,
-            siblingIndex,
-            siblingCount: siblings.length,
-            previousSiblingId: siblingIndex > 0 ? siblings[siblingIndex - 1].id : null,
-            nextSiblingId: siblingIndex >= 0 && siblingIndex < siblings.length - 1 ? siblings[siblingIndex + 1].id : null
-        };
-    });
+    const formatHistory = (chatId, rows) => {
+        const metadata = repositories.getHistoryMetadata(chatId, rows.map(row => row.id));
+        return rows.map(row => ({...formatChatMessage(row, metadata), ...metadata.siblings.get(row.id)}));
+    };
+    const listActiveBranchMessages = chatId => formatHistory(chatId, repositories.listActiveBranchMessages(chatId));
+    const getHistoryPage = (chatId, options) => {
+        const result = repositories.getActiveBranchPage(chatId, options);
+        if (result.error) return result;
+        const {rows, ...details} = result;
+        return {...details, messages: formatHistory(chatId, rows)};
+    };
 
     const cloneChatThroughMessage = ({ user, sourceChat, messageId = null }) => {
         if (repositories.countChats(user) >= config.chatLimit) {
@@ -779,9 +781,10 @@ export function createChatService(repositories, modelService, config, webSearchP
             const leaf = includeDescendants ? repositories.getLatestDescendantMessage(chatId, messageId) : message;
             repositories.updateChatActiveLeaf(chatId, user, leaf?.id || messageId);
             repositories.updateChatContextSummary(chatId, user, null, 0);
-            return { messages: listActiveBranchMessages(chatId) };
+            return getHistoryPage(chatId);
         },
         listActiveBranchMessages,
+        getHistoryPage,
         stopGeneration({ user, chatId }) {
             if (!repositories.getChat(chatId, user)) return { error: "Chat not found", status: 404 };
             const controller = activeGenerations.get(chatId);

src/services/passwordPolicy.js

@@ -0,0 +1,7 @@
+// bcrypt uses the first 72 UTF-8 bytes. Apply this only when creating a new hash:
+// existing credentials must remain usable for login and current-password checks.
+export function newPasswordError(password) {
+    return Buffer.byteLength(password, "utf8") > 72
+        ? "Password must be at most 72 UTF-8 bytes (some characters use multiple bytes)"
+        : null;
+}