feat: surface newly-created subtasks standalone in New Today

When a subtask is created today, it now appears as its own item
in the New Today section with the parent task shown as context
("under #PARENT_ID Parent Name"). Also still rendered inline
under the parent in Needs Work.

Requires API change: children now include created_at.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

briefing

@@ -116,12 +116,20 @@ def print_task(task, indent="  "):
     assigned = task.get('on_behalf_of')
     age = days_ago(created)
     is_today = is_new(created)
+    is_subtask = task.get('is_subtask', False)
 
-    # Task number + name
+    # Task number + name (prefix with ↳ if this is a standalone subtask view)
     badge = new_badge() if is_today else ""
-    line = f"{indent}{YELLOW}#{nid}{RESET} {BOLD}{WHITE}{name}{RESET}{badge}"
+    prefix = f"{GREY}↳{RESET} " if is_subtask else ""
+    line = f"{indent}{prefix}{YELLOW}#{nid}{RESET} {BOLD}{WHITE}{name}{RESET}{badge}"
     print(line)
 
+    # Parent context for subtasks
+    if is_subtask and task.get('parent_name'):
+        parent_nid = task.get('parent_nodesid')
+        parent_name = task.get('parent_name', '')
+        print(f"{indent}  {DIM}under {YELLOW}#{parent_nid}{RESET} {DIM}{parent_name}{RESET}")
+
     # Meta line
     parts = [format_status(status), format_priority(priority)]
     if age:
@@ -230,12 +238,34 @@ def render_tasks(tasks):
     if not tasks:
         return
 
-    # Separate new tasks
+    # Separate new tasks (parent-level)
     new_tasks = [t for t in tasks if t.get('category') == 'actionable' and is_new(t.get('created_at', ''))]
     actionable = [t for t in tasks if t.get('category') == 'actionable' and not is_new(t.get('created_at', ''))]
     waiting = [t for t in tasks if t.get('category') == 'waiting']
     done = [t for t in tasks if t.get('category') == 'done']
 
+    # Also surface any SUBTASKS created today as their own items in New Today
+    waiting_statuses = {'done', 'completed', 'cancelled'}
+    for t in tasks:
+        for ch in (t.get('children') or []):
+            if not is_new(ch.get('created_at', '')):
+                continue
+            if (ch.get('status') or '').lower() in waiting_statuses:
+                continue
+            new_tasks.append({
+                'nodesid':      ch['nodesid'],
+                'node_name':    ch.get('node_name', 'Untitled'),
+                'created_at':   ch.get('created_at'),
+                'status':       ch.get('status'),
+                'priority':     ch.get('priority'),
+                'on_behalf_of': ch.get('on_behalf_of'),
+                'client':       t.get('client'),
+                'project':      t.get('project'),
+                'is_subtask':   True,
+                'parent_nodesid': t.get('nodesid'),
+                'parent_name':  t.get('node_name'),
+            })
+
     # New today
     if new_tasks:
         print(f"\n{BOLD}{RED}{'─' * 60}{RESET}")