feat(webui): persist manual session ordering

webui/src/lib/chat-groups.ts

@@ -30,6 +30,7 @@ export interface ChatGroupingOptions {
   archivedKeys: string[];
   titleOverrides: Record<string, string>;
   projectNameOverrides: Record<string, string>;
+  sessionOrder: string[];
   showArchived: boolean;
   sort: SidebarSortMode;
   defaultWorkspacePath?: string | null;
@@ -64,7 +65,7 @@ export function groupSessions(
       pinnedSessions.push(session);
       continue;
     }
-    if (options.sort === "title_asc") {
+    if (options.sort === "title_asc" || options.sort === "manual") {
       normalSessions.push(session);
       continue;
     }
@@ -87,11 +88,12 @@ export function groupSessions(
         buckets.get(label) ?? [],
         options.sort,
         options.titleOverrides,
+        options.sessionOrder,
       ),
     }))
     .filter((group) => group.sessions.length > 0);
 
-  if (options.sort === "title_asc" && normalSessions.length) {
+  if ((options.sort === "title_asc" || options.sort === "manual") && normalSessions.length) {
     groups.push({
       id: "date:all",
       label: labels.all,
@@ -99,6 +101,7 @@ export function groupSessions(
         normalSessions,
         options.sort,
         options.titleOverrides,
+        options.sessionOrder,
       ),
     });
   }
@@ -110,6 +113,7 @@ export function groupSessions(
         pinnedSessions,
         options.sort,
         options.titleOverrides,
+        options.sessionOrder,
       ),
     });
   }
@@ -121,6 +125,7 @@ export function groupSessions(
         archivedSessions,
         options.sort,
         options.titleOverrides,
+        options.sessionOrder,
       ),
     });
   }
@@ -276,6 +281,7 @@ function groupSessionsByProject(
       bucket.sessions,
       options.sort,
       options.titleOverrides,
+      options.sessionOrder,
       pinned,
       archived,
     ),
@@ -297,6 +303,7 @@ function groupSessionsByProject(
         conversations,
         options.sort,
         options.titleOverrides,
+        options.sessionOrder,
         pinned,
         archived,
       ),
@@ -319,10 +326,11 @@ function sortProjectSessions(
   sessions: ChatSummary[],
   sort: SidebarSortMode,
   titleOverrides: Record<string, string>,
+  sessionOrder: string[],
   pinned: Set<string>,
   archived: Set<string>,
 ): ChatSummary[] {
-  return sortSessions(sessions, sort, titleOverrides).sort((a, b) => {
+  return sortSessions(sessions, sort, titleOverrides, sessionOrder).sort((a, b) => {
     const pinOrder = Number(pinned.has(b.key)) - Number(pinned.has(a.key));
     if (pinOrder !== 0) return pinOrder;
     const archiveOrder = Number(archived.has(a.key)) - Number(archived.has(b.key));
@@ -335,9 +343,19 @@ function sortSessions(
   sessions: ChatSummary[],
   sort: SidebarSortMode,
   titleOverrides: Record<string, string>,
+  sessionOrder: string[],
 ): ChatSummary[] {
   const copy = [...sessions];
+  const order = new Map(sessionOrder.map((key, index) => [key, index]));
   copy.sort((a, b) => {
+    if (sort === "manual") {
+      const aIndex = order.get(a.key);
+      const bIndex = order.get(b.key);
+      if (aIndex !== undefined && bIndex !== undefined) return aIndex - bIndex;
+      if (aIndex === undefined && bIndex !== undefined) return -1;
+      if (aIndex !== undefined && bIndex === undefined) return 1;
+      return sessionTime(b, "updatedAt") - sessionTime(a, "updatedAt");
+    }
     if (sort === "title_asc") {
       const titleOrder = titleForSort(a, titleOverrides).localeCompare(
         titleForSort(b, titleOverrides),

webui/src/lib/session-drag.ts

@@ -13,6 +13,6 @@ export function writeDraggedSession(
   dataTransfer: DataTransfer,
   sessionKey: string,
 ): void {
-  dataTransfer.effectAllowed = "copy";
+  dataTransfer.effectAllowed = "copyMove";
   dataTransfer.setData(SESSION_DRAG_TYPE, sessionKey);
 }

webui/src/lib/types.ts

@@ -367,7 +367,7 @@ export interface WorkspacesPayload {
 }
 
 export type SidebarDensity = "comfortable" | "compact";
-export type SidebarSortMode = "updated_desc" | "created_desc" | "title_asc";
+export type SidebarSortMode = "updated_desc" | "created_desc" | "title_asc" | "manual";
 
 export interface SidebarViewState {
   density: SidebarDensity;
@@ -381,6 +381,7 @@ export interface SidebarStatePayload {
   schema_version: number;
   pinned_keys: string[];
   archived_keys: string[];
+  session_order: string[];
   title_overrides: Record<string, string>;
   project_name_overrides: Record<string, string>;
   tags_by_key: Record<string, string[]>;