feat(tasks): support subtasks with inline creation, checklist and title progress bar

frontend/src/features/triage/TasksView.tsx

@@ -15,8 +15,9 @@ import {
   Layers,
   Share2,
   Users,
+  CheckSquare,
 } from 'lucide-react';
-import { TaskList, Thought, Space } from '../../lib/types';
+import { TaskList, Thought, Space, SubTask } from '../../lib/types';
 import { api, triggerHaptic } from '../../lib/api';
 
 const getInitials = (name?: string): string => {
@@ -67,6 +68,10 @@ export const TasksView: React.FC<TasksViewProps> = ({
   const [activeNotesTaskId, setActiveNotesTaskId] = useState<string | null>(null);
   const [notesDraft, setNotesDraft] = useState('');
 
+  // Subtask creation state
+  const [addingSubtaskTaskId, setAddingSubtaskTaskId] = useState<string | null>(null);
+  const [subtaskDraft, setSubtaskDraft] = useState('');
+
   const loadData = async () => {
     setLoading(true);
     try {
@@ -125,6 +130,168 @@ export const TasksView: React.FC<TasksViewProps> = ({
     setActiveNotesTaskId(null);
   };
 
+  const handleAddSubtask = async (task: Thought, title: string) => {
+    const trimmed = title.trim();
+    if (!trimmed) return;
+    triggerHaptic(10);
+    const newSub: SubTask = {
+      id: `sub_${Date.now()}_${Math.random().toString(36).slice(2, 7)}`,
+      title: trimmed,
+      isCompleted: false,
+      createdAt: new Date().toISOString(),
+    };
+    const updatedSubtasks = [...(task.subtasks || []), newSub];
+    setTasks((prev) =>
+      prev.map((t) => (t.id === task.id ? { ...t, subtasks: updatedSubtasks } : t))
+    );
+    setSubtaskDraft('');
+    await api.updateThought(task.id, { subtasks: updatedSubtasks });
+  };
+
+  const handleToggleSubtask = async (task: Thought, subtaskId: string) => {
+    triggerHaptic(10);
+    const updatedSubtasks = (task.subtasks || []).map((s) =>
+      s.id === subtaskId ? { ...s, isCompleted: !s.isCompleted } : s
+    );
+    setTasks((prev) =>
+      prev.map((t) => (t.id === task.id ? { ...t, subtasks: updatedSubtasks } : t))
+    );
+    await api.updateThought(task.id, { subtasks: updatedSubtasks });
+  };
+
+  const handleDeleteSubtask = async (task: Thought, subtaskId: string) => {
+    triggerHaptic(10);
+    const updatedSubtasks = (task.subtasks || []).filter((s) => s.id !== subtaskId);
+    setTasks((prev) =>
+      prev.map((t) => (t.id === task.id ? { ...t, subtasks: updatedSubtasks } : t))
+    );
+    await api.updateThought(task.id, { subtasks: updatedSubtasks });
+  };
+
+  const renderTaskProgressBar = (task: Thought) => {
+    if (!task.subtasks || task.subtasks.length === 0) return null;
+    const total = task.subtasks.length;
+    const done = task.subtasks.filter((s) => s.isCompleted).length;
+    const percent = Math.round((done / total) * 100);
+
+    return (
+      <div
+        className="space-y-1 mt-1.5 mb-1 select-none"
+        title={`${done} von ${total} Unteraufgaben erledigt (${percent}%)`}
+      >
+        <div className="flex items-center justify-between text-[10px] text-muted font-medium">
+          <span className="flex items-center gap-1">
+            <CheckSquare className="w-2.5 h-2.5 text-accent" />
+            <span>
+              {done}/{total} Unteraufgaben
+            </span>
+          </span>
+          <span className={percent === 100 ? 'text-status-ok font-bold' : 'text-muted'}>
+            {percent}%
+          </span>
+        </div>
+        <div className="w-full h-1 bg-border rounded-full overflow-hidden">
+          <div
+            className={`h-full transition-all duration-300 ${
+              percent === 100 ? 'bg-status-ok' : 'bg-accent'
+            }`}
+            style={{ width: `${percent}%` }}
+          />
+        </div>
+      </div>
+    );
+  };
+
+  const renderSubtaskList = (task: Thought) => {
+    const hasSubtasks = task.subtasks && task.subtasks.length > 0;
+    const isAdding = addingSubtaskTaskId === task.id;
+
+    if (!hasSubtasks && !isAdding) return null;
+
+    return (
+      <div className="space-y-1 pt-1 pb-0.5">
+        {hasSubtasks && (
+          <div className="space-y-0.5">
+            {task.subtasks!.map((sub) => (
+              <div
+                key={sub.id}
+                className="flex items-center justify-between group/sub py-0.5 px-1 rounded hover:bg-canvas text-xs transition-colors"
+              >
+                <label className="flex items-center gap-2 cursor-pointer flex-1 min-w-0 select-none">
+                  <input
+                    type="checkbox"
+                    checked={sub.isCompleted}
+                    onChange={() => handleToggleSubtask(task, sub.id)}
+                    className="checkbox-square w-3.5 h-3.5 accent-accent cursor-pointer flex-shrink-0"
+                  />
+                  <span
+                    className={`truncate leading-snug ${
+                      sub.isCompleted ? 'line-through text-faint' : 'text-main'
+                    }`}
+                  >
+                    {sub.title}
+                  </span>
+                </label>
+                <button
+                  type="button"
+                  onClick={() => handleDeleteSubtask(task, sub.id)}
+                  className="opacity-0 group-hover/sub:opacity-100 text-faint hover:text-status-err transition-opacity p-0.5 ml-1"
+                  title="Unteraufgabe entfernen"
+                >
+                  <Trash2 className="w-2.5 h-2.5" />
+                </button>
+              </div>
+            ))}
+          </div>
+        )}
+
+        {isAdding && (
+          <form
+            onSubmit={(e) => {
+              e.preventDefault();
+              handleAddSubtask(task, subtaskDraft);
+            }}
+            className="flex items-center gap-1 pt-1"
+          >
+            <input
+              type="text"
+              value={subtaskDraft}
+              onChange={(e) => setSubtaskDraft(e.target.value)}
+              onKeyDown={(e) => {
+                if (e.key === 'Escape') {
+                  setAddingSubtaskTaskId(null);
+                  setSubtaskDraft('');
+                }
+              }}
+              placeholder="Neue Unteraufgabe… (Enter)"
+              autoFocus
+              className="flex-1 h-6 px-1.5 text-xs bg-canvas border border-accent rounded-btn text-main placeholder-faint focus:outline-none"
+            />
+            <button
+              type="submit"
+              disabled={!subtaskDraft.trim()}
+              className="h-6 px-2 bg-accent text-on-accent text-[11px] rounded-btn font-medium disabled:opacity-40 cursor-pointer"
+              title="Hinzufügen"
+            >
+              <Plus className="w-3 h-3" />
+            </button>
+            <button
+              type="button"
+              onClick={() => {
+                setAddingSubtaskTaskId(null);
+                setSubtaskDraft('');
+              }}
+              className="h-6 px-1 text-muted hover:text-main cursor-pointer"
+              title="Abbrechen"
+            >
+              <X className="w-3 h-3" />
+            </button>
+          </form>
+        )}
+      </div>
+    );
+  };
+
   const handleConvertToDoc = async (task: Thought) => {
     triggerHaptic(20);
     const updated = await api.triageAction(task.id, 'keep', { convertTo: 'document' });
@@ -657,6 +824,9 @@ export const TasksView: React.FC<TasksViewProps> = ({
                     </button>
                   </div>
 
+                  {/* Subtasks Progress Bar on Title */}
+                  {renderTaskProgressBar(task)}
+
                   {/* Notes Preview / Inline Editor */}
                   {activeNotesTaskId === task.id ? (
                     <div className="space-y-1">
@@ -695,6 +865,9 @@ export const TasksView: React.FC<TasksViewProps> = ({
                     </div>
                   ) : null}
 
+                  {/* Subtasks Checklist & Inline Creator */}
+                  {renderSubtaskList(task)}
+
                   {/* Footer & Movement Controls */}
                   <div className="flex items-center justify-between gap-1 pt-1 border-t border-subtle text-[11px]">
                     <div className="flex items-center gap-1.5 text-muted">
@@ -714,6 +887,18 @@ export const TasksView: React.FC<TasksViewProps> = ({
                           + Notiz
                         </button>
                       )}
+                      <button
+                        type="button"
+                        onClick={() => {
+                          setAddingSubtaskTaskId(task.id);
+                          setSubtaskDraft('');
+                        }}
+                        className="text-[10px] text-faint hover:text-main flex items-center gap-0.5 cursor-pointer"
+                        title="Unteraufgabe hinzufügen"
+                      >
+                        <Plus className="w-2.5 h-2.5 text-accent" />
+                        <span>+ Unteraufgabe</span>
+                      </button>
                     </div>
 
                     <div className="flex items-center gap-1">
@@ -764,6 +949,9 @@ export const TasksView: React.FC<TasksViewProps> = ({
                     </button>
                   </div>
 
+                  {/* Subtasks Progress Bar on Title */}
+                  {renderTaskProgressBar(task)}
+
                   {/* Notes Preview / Inline Editor */}
                   {activeNotesTaskId === task.id ? (
                     <div className="space-y-1">
@@ -801,8 +989,38 @@ export const TasksView: React.FC<TasksViewProps> = ({
                     </div>
                   ) : null}
 
+                  {/* Subtasks Checklist & Inline Creator */}
+                  {renderSubtaskList(task)}
+
                   {/* Movement Controls */}
                   <div className="flex items-center justify-between gap-1 pt-1 border-t border-subtle text-[11px]">
+                    <div className="flex items-center gap-1.5 text-muted">
+                      {!task.notes && (
+                        <button
+                          onClick={() => {
+                            setActiveNotesTaskId(task.id);
+                            setNotesDraft('');
+                          }}
+                          className="text-[10px] text-faint hover:text-main"
+                        >
+                          + Notiz
+                        </button>
+                      )}
+                      <button
+                        type="button"
+                        onClick={() => {
+                          setAddingSubtaskTaskId(task.id);
+                          setSubtaskDraft('');
+                        }}
+                        className="text-[10px] text-faint hover:text-main flex items-center gap-0.5 cursor-pointer"
+                        title="Unteraufgabe hinzufügen"
+                      >
+                        <Plus className="w-2.5 h-2.5 text-accent" />
+                        <span>+ Unteraufgabe</span>
+                      </button>
+                    </div>
+
+                    <div className="flex items-center gap-1">
                       <button
                         onClick={() => handleKanbanMove(task, 'todo')}
                         className="btn-action h-6 px-1.5 text-[10px] flex items-center gap-1"
@@ -822,6 +1040,7 @@ export const TasksView: React.FC<TasksViewProps> = ({
                       </button>
                     </div>
                   </div>
+                </div>
               ))}
               {inProgressKanban.length === 0 && (
                 <div className="p-4 text-center text-faint text-xs">Keine aktiven Aufgaben</div>
@@ -849,6 +1068,10 @@ export const TasksView: React.FC<TasksViewProps> = ({
                     {task.content}
                   </p>
 
+                  {/* Subtasks Progress Bar & Checklist */}
+                  {renderTaskProgressBar(task)}
+                  {renderSubtaskList(task)}
+
                   <div className="flex items-center justify-between gap-1 pt-1 border-t border-subtle text-[11px]">
                     <button
                       onClick={() => handleKanbanMove(task, 'todo')}
@@ -991,6 +1214,9 @@ export const TasksView: React.FC<TasksViewProps> = ({
                           {task.content}
                         </p>
 
+                        {/* Subtasks Progress Bar on Title */}
+                        {renderTaskProgressBar(task)}
+
                         {/* Inline Notes or Editor */}
                         {activeNotesTaskId === task.id ? (
                           <div className="space-y-1 pt-1">
@@ -1029,6 +1255,9 @@ export const TasksView: React.FC<TasksViewProps> = ({
                           </p>
                         ) : null}
 
+                        {/* Subtasks Checklist & Inline Creator */}
+                        {renderSubtaskList(task)}
+
                         <div className="flex flex-wrap items-center gap-1.5 mt-0.5 empty:hidden">
                           {task.priority === 'urgent' && (
                             <span className="badge-accent">Dringend</span>
@@ -1052,6 +1281,19 @@ export const TasksView: React.FC<TasksViewProps> = ({
 
                     {/* Action Controls */}
                     <div className="flex items-center gap-2 self-end sm:self-center flex-shrink-0">
+                      <button
+                        type="button"
+                        onClick={() => {
+                          setAddingSubtaskTaskId(task.id);
+                          setSubtaskDraft('');
+                        }}
+                        className="btn-action text-xs"
+                        title="Unteraufgabe hinzufügen"
+                      >
+                        <Plus className="w-3 h-3 text-accent" />
+                        <span className="hidden md:inline">Unteraufgabe</span>
+                      </button>
+
                       {!task.notes && activeNotesTaskId !== task.id && (
                         <button
                           onClick={() => {

frontend/src/features/workspace/WorkspaceView.tsx

@@ -523,6 +523,22 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
     setSlashSearch('');
   };
 
+  const getDirectChildTodos = (blocks: DocumentBlock[], parentIndex: number): DocumentBlock[] => {
+    const parent = blocks[parentIndex];
+    if (!parent) return [];
+    const parentLevel = parent.level || 0;
+    const childTodos: DocumentBlock[] = [];
+    for (let i = parentIndex + 1; i < blocks.length; i++) {
+      const cur = blocks[i];
+      const curLevel = cur.level || 0;
+      if (curLevel <= parentLevel) break;
+      if (cur.type === 'todo') {
+        childTodos.push(cur);
+      }
+    }
+    return childTodos;
+  };
+
   // Drag & Drop Handlers on the Bullet Dot
   const handleDragStart = (e: React.DragEvent, blockId: string) => {
     e.dataTransfer.setData('text/plain', blockId);
@@ -1467,7 +1483,8 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
                         <div className="flex-1 min-w-0 pt-0.5 relative">
                           {/* TYPE: TODO */}
                           {block.type === 'todo' && (
-                            <div className="flex items-center gap-2">
+                            <div className="space-y-1">
+                              <div className="flex items-center gap-2 group/todo">
                                 <input
                                   type="checkbox"
                                   checked={!!block.checked}
@@ -1487,6 +1504,47 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
                                     block.checked ? 'line-through text-faint' : 'text-main'
                                   }`}
                                 />
+                                <button
+                                  type="button"
+                                  onClick={() => insertNewBulletAfter(originalIndex, (block.level || 0) + 1, 'todo')}
+                                  className="opacity-0 group-hover/todo:opacity-100 p-0.5 text-muted hover:text-accent rounded transition-opacity cursor-pointer flex-shrink-0"
+                                  title="Unteraufgabe erstellen"
+                                >
+                                  <Plus className="w-3.5 h-3.5" />
+                                </button>
+                              </div>
+
+                              {/* Progress bar for child todos if any exist */}
+                              {(() => {
+                                const childTodos = getDirectChildTodos(selectedDoc?.blocks || [], originalIndex);
+                                if (childTodos.length === 0) return null;
+                                const doneChild = childTodos.filter((c) => c.checked).length;
+                                const totalChild = childTodos.length;
+                                const pct = Math.round((doneChild / totalChild) * 100);
+                                return (
+                                  <div
+                                    className="space-y-0.5 ml-6 pt-0.5 select-none"
+                                    title={`${doneChild} von ${totalChild} Unteraufgaben erledigt (${pct}%)`}
+                                  >
+                                    <div className="flex items-center justify-between text-[10px] text-muted">
+                                      <span>
+                                        {doneChild}/{totalChild} erledigt
+                                      </span>
+                                      <span className={pct === 100 ? 'text-status-ok font-bold' : ''}>
+                                        {pct}%
+                                      </span>
+                                    </div>
+                                    <div className="w-full h-1 bg-border rounded-full overflow-hidden">
+                                      <div
+                                        className={`h-full transition-all duration-300 ${
+                                          pct === 100 ? 'bg-status-ok' : 'bg-accent'
+                                        }`}
+                                        style={{ width: `${pct}%` }}
+                                      />
+                                    </div>
+                                  </div>
+                                );
+                              })()}
                             </div>
                           )}
 

frontend/src/lib/api.ts

@@ -13,6 +13,7 @@ import {
   Team,
   TaskList,
   Thought,
+  SubTask,
   User,
   UserInvite,
 } from './types';
@@ -309,6 +310,7 @@ export const api = {
       taskListId?: string;
       kanbanStatus?: 'todo' | 'in_progress' | 'done';
       notes?: string;
+      subtasks?: SubTask[];
     }
   ): Promise<Thought> {
     return request<Thought>(`/api/v1/thoughts/${thoughtId}`, {

frontend/src/lib/types.ts

@@ -34,6 +34,13 @@ export interface UserInvite {
   expiresAt: string;
 }
 
+export interface SubTask {
+  id: string;
+  title: string;
+  isCompleted: boolean;
+  createdAt?: string;
+}
+
 export interface Thought {
   id: string;
   userId: string;
@@ -49,6 +56,7 @@ export interface Thought {
   taskListId?: string;
   kanbanStatus?: 'todo' | 'in_progress' | 'done';
   notes?: string;
+  subtasks?: SubTask[];
   alarmSent?: boolean;
   createdAt: string;
   triagedAt?: string;

internal/api/server.go

@@ -644,13 +644,14 @@ func (s *Server) handleUpdateThought(w http.ResponseWriter, r *http.Request) {
 		TaskListID   *string           `json:"taskListId"`
 		KanbanStatus *string           `json:"kanbanStatus"`
 		Notes        *string           `json:"notes"`
+		Subtasks     *[]domain.SubTask `json:"subtasks"`
 	}
 	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
 		writeError(w, http.StatusBadRequest, "Ungültiges JSON")
 		return
 	}
 
-	updated, err := s.store.UpdateThoughtDetails(userID, thoughtID, req.Content, req.IsCompleted, req.DueDate, req.Priority, req.TaskListID, req.KanbanStatus, req.Notes)
+	updated, err := s.store.UpdateThoughtDetails(userID, thoughtID, req.Content, req.IsCompleted, req.DueDate, req.Priority, req.TaskListID, req.KanbanStatus, req.Notes, req.Subtasks)
 	if err != nil {
 		writeError(w, http.StatusBadRequest, err.Error())
 		return

internal/domain/models.go

@@ -77,6 +77,13 @@ const (
 	StatusConverted ThoughtStatus = "converted"
 )
 
+type SubTask struct {
+	ID          string `json:"id"`
+	Title       string `json:"title"`
+	IsCompleted bool   `json:"isCompleted"`
+	CreatedAt   string `json:"createdAt,omitempty"`
+}
+
 type Thought struct {
 	ID             string        `json:"id"`
 	UserID         string        `json:"userId"`
@@ -92,6 +99,7 @@ type Thought struct {
 	TaskListID     string        `json:"taskListId,omitempty"`
 	KanbanStatus   string        `json:"kanbanStatus,omitempty"` // todo | in_progress | done
 	Notes          string        `json:"notes,omitempty"`
+	Subtasks       []SubTask     `json:"subtasks"`
 	AlarmSent      bool          `json:"alarmSent,omitempty"`
 	CreatedAt      string        `json:"createdAt"`
 	TriagedAt      string        `json:"triagedAt,omitempty"`

internal/storage/sqlite.go

@@ -108,6 +108,7 @@ func (s *Store) migrate() error {
 		kanban_status TEXT NOT NULL DEFAULT 'todo',
 		notes TEXT NOT NULL DEFAULT '',
 		alarm_sent INTEGER NOT NULL DEFAULT 0,
+		subtasks TEXT NOT NULL DEFAULT '[]',
 		created_at TEXT NOT NULL,
 		triaged_at TEXT DEFAULT '',
 		FOREIGN KEY(user_id) REFERENCES users(id) ON DELETE CASCADE
@@ -263,6 +264,7 @@ func (s *Store) migrate() error {
 		"ALTER TABLE thoughts ADD COLUMN kanban_status TEXT NOT NULL DEFAULT 'todo';",
 		"ALTER TABLE thoughts ADD COLUMN notes TEXT NOT NULL DEFAULT '';",
 		"ALTER TABLE thoughts ADD COLUMN alarm_sent INTEGER NOT NULL DEFAULT 0;",
+		"ALTER TABLE thoughts ADD COLUMN subtasks TEXT NOT NULL DEFAULT '[]';",
 
 		"ALTER TABLE documents ADD COLUMN folder_path TEXT NOT NULL DEFAULT '';",
 	}
@@ -645,13 +647,14 @@ func (s *Store) CreateThoughtWithDetails(userID, content, priority, source, dueD
 	}
 
 	_, err := s.db.Exec(
-		`INSERT INTO thoughts (id, user_id, content, tags, priority, source, status, is_completed, due_date, task_list_id, kanban_status, notes, alarm_sent, created_at)
+		`INSERT INTO thoughts (id, user_id, content, tags, priority, source, status, is_completed, due_date, task_list_id, kanban_status, notes, alarm_sent, created_at, subtasks)
-		 VALUES (?, ?, ?, ?, ?, ?, ?, 0, ?, ?, ?, ?, 0, ?)`,
+		 VALUES (?, ?, ?, ?, ?, ?, ?, 0, ?, ?, ?, ?, 0, ?, '[]')`,
 		t.ID, t.UserID, t.Content, string(tagsJSON), t.Priority, t.Source, string(t.Status), t.DueDate, t.TaskListID, t.KanbanStatus, t.Notes, t.CreatedAt,
 	)
 	if err != nil {
 		return nil, err
 	}
+	t.Subtasks = []domain.SubTask{}
 	return t, nil
 }
 
@@ -659,13 +662,13 @@ func scanThought(rows interface {
 	Scan(dest ...any) error
 }) (*domain.Thought, error) {
 	t := &domain.Thought{}
-	var tagsStr, statusStr string
+	var tagsStr, subtasksStr, statusStr string
 	var isCompleted, alarmSent int
 	err := rows.Scan(
 		&t.ID, &t.UserID, &t.Content, &tagsStr, &t.Priority, &t.Source,
 		&statusStr, &isCompleted, &t.ConvertedType, &t.ConvertedRefID,
 		&t.DueDate, &t.TaskListID, &t.KanbanStatus, &t.Notes, &alarmSent,
-		&t.CreatedAt, &t.TriagedAt,
+		&t.CreatedAt, &t.TriagedAt, &subtasksStr,
 	)
 	if err != nil {
 		return nil, err
@@ -682,12 +685,16 @@ func scanThought(rows interface {
 	}
 	t.Tags = []string{}
 	_ = json.Unmarshal([]byte(tagsStr), &t.Tags)
+	t.Subtasks = []domain.SubTask{}
+	if subtasksStr != "" && subtasksStr != "null" {
+		_ = json.Unmarshal([]byte(subtasksStr), &t.Subtasks)
+	}
 	return t, nil
 }
 
 func (s *Store) GetThoughtByID(userID, thoughtID string) (*domain.Thought, error) {
 	row := s.db.QueryRow(
-		`SELECT id, user_id, content, tags, priority, source, status, is_completed, converted_type, converted_ref_id, due_date, task_list_id, kanban_status, notes, alarm_sent, created_at, triaged_at
+		`SELECT id, user_id, content, tags, priority, source, status, is_completed, converted_type, converted_ref_id, due_date, task_list_id, kanban_status, notes, alarm_sent, created_at, triaged_at, subtasks
 		 FROM thoughts WHERE id = ? AND (user_id = ? OR task_list_id IN (SELECT id FROM task_lists WHERE space_id IN (SELECT space_id FROM space_members WHERE user_id = ?)))`,
 		thoughtID, userID, userID,
 	)
@@ -703,14 +710,14 @@ func (s *Store) GetThoughts(userID, statusFilter string, limit int) ([]domain.Th
 
 	if statusFilter != "" && statusFilter != "all" {
 		rows, err = s.db.Query(
-			`SELECT id, user_id, content, tags, priority, source, status, is_completed, converted_type, converted_ref_id, due_date, task_list_id, kanban_status, notes, alarm_sent, created_at, triaged_at
+			`SELECT id, user_id, content, tags, priority, source, status, is_completed, converted_type, converted_ref_id, due_date, task_list_id, kanban_status, notes, alarm_sent, created_at, triaged_at, subtasks
 			 FROM thoughts WHERE user_id = ? AND status = ?
 			 ORDER BY CASE priority WHEN 'urgent' THEN 1 WHEN 'high' THEN 2 WHEN 'normal' THEN 3 ELSE 4 END, created_at DESC LIMIT ?`,
 			userID, statusFilter, limit,
 		)
 	} else {
 		rows, err = s.db.Query(
-			`SELECT id, user_id, content, tags, priority, source, status, is_completed, converted_type, converted_ref_id, due_date, task_list_id, kanban_status, notes, alarm_sent, created_at, triaged_at
+			`SELECT id, user_id, content, tags, priority, source, status, is_completed, converted_type, converted_ref_id, due_date, task_list_id, kanban_status, notes, alarm_sent, created_at, triaged_at, subtasks
 			 FROM thoughts WHERE user_id = ?
 			 ORDER BY created_at DESC LIMIT ?`,
 			userID, limit,
@@ -736,7 +743,7 @@ func (s *Store) GetTasks(userID string, taskListID string) ([]domain.Thought, er
 	var err error
 	if taskListID != "" {
 		rows, err = s.db.Query(
-			`SELECT id, user_id, content, tags, priority, source, status, is_completed, converted_type, converted_ref_id, due_date, task_list_id, kanban_status, notes, alarm_sent, created_at, triaged_at
+			`SELECT id, user_id, content, tags, priority, source, status, is_completed, converted_type, converted_ref_id, due_date, task_list_id, kanban_status, notes, alarm_sent, created_at, triaged_at, subtasks
 			 FROM thoughts
 			 WHERE (user_id = ? OR task_list_id IN (SELECT id FROM task_lists WHERE space_id IN (SELECT space_id FROM space_members WHERE user_id = ?)))
 			   AND task_list_id = ?
@@ -746,7 +753,7 @@ func (s *Store) GetTasks(userID string, taskListID string) ([]domain.Thought, er
 		)
 	} else {
 		rows, err = s.db.Query(
-			`SELECT id, user_id, content, tags, priority, source, status, is_completed, converted_type, converted_ref_id, due_date, task_list_id, kanban_status, notes, alarm_sent, created_at, triaged_at
+			`SELECT id, user_id, content, tags, priority, source, status, is_completed, converted_type, converted_ref_id, due_date, task_list_id, kanban_status, notes, alarm_sent, created_at, triaged_at, subtasks
 			 FROM thoughts
 			 WHERE (user_id = ? OR task_list_id IN (SELECT id FROM task_lists WHERE space_id IN (SELECT space_id FROM space_members WHERE user_id = ?)))
 			   AND (status = 'kept' OR (status = 'converted' AND converted_type = 'task'))
@@ -839,7 +846,7 @@ func (s *Store) UpdateThoughtTriage(userID, thoughtID, action, convertTo, target
 	return s.GetThoughtByID(userID, thoughtID)
 }
 
-func (s *Store) UpdateThoughtDetails(userID, thoughtID string, content *string, isCompleted *bool, dueDate *string, priority *string, taskListID *string, kanbanStatus *string, notes *string) (*domain.Thought, error) {
+func (s *Store) UpdateThoughtDetails(userID, thoughtID string, content *string, isCompleted *bool, dueDate *string, priority *string, taskListID *string, kanbanStatus *string, notes *string, subtasks *[]domain.SubTask) (*domain.Thought, error) {
 	thought, err := s.GetThoughtByID(userID, thoughtID)
 	if err != nil {
 		return nil, err
@@ -877,16 +884,20 @@ func (s *Store) UpdateThoughtDetails(userID, thoughtID string, content *string,
 	if notes != nil {
 		thought.Notes = *notes
 	}
+	if subtasks != nil {
+		thought.Subtasks = *subtasks
+	}
 
 	tagsJSON, _ := json.Marshal(thought.Tags)
+	subtasksJSON, _ := json.Marshal(thought.Subtasks)
 	completedInt := 0
 	if thought.IsCompleted {
 		completedInt = 1
 	}
 
 	_, err = s.db.Exec(
-		`UPDATE thoughts SET content = ?, tags = ?, is_completed = ?, due_date = ?, priority = ?, task_list_id = ?, kanban_status = ?, notes = ? WHERE id = ? AND user_id = ?`,
+		`UPDATE thoughts SET content = ?, tags = ?, is_completed = ?, due_date = ?, priority = ?, task_list_id = ?, kanban_status = ?, notes = ?, subtasks = ? WHERE id = ? AND user_id = ?`,
-		thought.Content, string(tagsJSON), completedInt, thought.DueDate, thought.Priority, thought.TaskListID, thought.KanbanStatus, thought.Notes, thoughtID, userID,
+		thought.Content, string(tagsJSON), completedInt, thought.DueDate, thought.Priority, thought.TaskListID, thought.KanbanStatus, thought.Notes, string(subtasksJSON), thoughtID, userID,
 	)
 	if err != nil {
 		return nil, err
@@ -1574,7 +1585,7 @@ func (s *Store) SearchAll(userID, query string) ([]domain.Thought, []domain.Docu
 	q := "%" + strings.ToLower(strings.TrimSpace(query)) + "%"
 
 	tRows, err := s.db.Query(
-		`SELECT id, user_id, content, tags, priority, source, status, is_completed, converted_type, converted_ref_id, due_date, task_list_id, kanban_status, notes, alarm_sent, created_at, triaged_at
+		`SELECT id, user_id, content, tags, priority, source, status, is_completed, converted_type, converted_ref_id, due_date, task_list_id, kanban_status, notes, alarm_sent, created_at, triaged_at, subtasks
 		 FROM thoughts WHERE user_id = ? AND LOWER(content) LIKE ? ORDER BY created_at DESC LIMIT 30`,
 		userID, q,
 	)