fix: improve handling of team member and task data in project management

- Updated AssigneeSelect to handle cases where team member names may be undefined.
- Made the description field in CreateProjectModal required for better data integrity.
- Enhanced ExportImportControls to map member emails by ID for easier access and added an assigneeEmail column in task exports.
- Refactored ProjectManagement to improve team merging logic and ensure proper handling of incoming tasks and members, including better ID resolution and state management.

Author: asepindrak

frontend/src/components/AssigneeSelect.tsx

@@ -40,7 +40,7 @@ export function AssigneeSelect({
   const theme = makeSelectTheme(dark);
 
   const options = team.map((t: TeamMember) => {
-    const hue = hashStr(t.name) % 360; // 0..359
+    const hue = hashStr(t.name ? t.name : "A") % 360; // 0..359
     // choose visible text color and dot background depending on mode:
     const dot = dark ? hsla(hue, 70, 55, 0.95) : hsl(hue, 75, 45);
     const text = dark ? hsl(hue, 70, 75) : hsl(hue, 75, 25);

frontend/src/components/CreateProjectModal.tsx

@@ -129,10 +129,11 @@ export default function CreateProjectModal({
 
           <label className="block text-sm mb-4">
             <span className="text-xs text-gray-500 dark:text-gray-400">
-              Description (optional)
+              Description
             </span>
             <textarea
               value={description}
+              required
               onChange={(e) => setDescription(e.target.value)}
               placeholder="Short description"
               className="mt-1 block w-full px-3 py-2 rounded-lg bg-slate-100 dark:bg-gray-900 border border-gray-100 dark:border-gray-700 text-sm outline-none focus:ring-1 focus:ring-sky-300 min-h-[96px]"

frontend/src/components/ExportImportControls.tsx

@@ -163,6 +163,11 @@ export default function ExportImportControls({
       const project = projects?.find((p) => p.id === selectedProjectId);
       const projectWorkspaceId = project?.workspaceId;
 
+      // Build a map for quick lookup of member email by id
+      const memberEmailById: Map<string, string> = new Map(
+        (team || []).map((m) => [String(m.id), String(m.email ?? "")])
+      );
+
       // Team rows
       const tmRows = team
         .filter((m) => {
@@ -210,6 +215,12 @@ export default function ExportImportControls({
         const updatedDescription =
           descInfo?.html ?? (t as any).description ?? "";
 
+        // find assignee email if available
+        const assigneeIdStr = t.assigneeId ? String(t.assigneeId) : "";
+        const assigneeEmail = assigneeIdStr
+          ? memberEmailById.get(assigneeIdStr) ?? ""
+          : "";
+
         return {
           id: truncateForExcel(t.id ?? "", `task.id:${t.id ?? ""}`),
           clientId: truncateForExcel(
@@ -233,6 +244,11 @@ export default function ExportImportControls({
             t.assigneeId ?? "",
             `task.assigneeId:${t.id ?? ""}`
           ),
+          // NEW: add assigneeEmail column
+          assigneeEmail: truncateForExcel(
+            assigneeEmail,
+            `task.assigneeEmail:${t.id ?? ""}`
+          ),
           priority: truncateForExcel(
             t.priority ?? "",
             `task.priority:${t.id ?? ""}`