feat(tui-v3): implement 2FA/Seed boards and hierarchical sidebar

Added TotpBoard with live 30s ticking codes and progress bars. Added
SeedBoard for BIP-85 derivations. Upgraded ProfileTree to a true
hierarchical structure that recursively lists managed accounts and agents.
Implemented global UI heartbeat for real-time dashboard updates.

src/seedpass/tui_v3/app.py

@@ -117,6 +117,20 @@ class SeedPassTuiV3(App[None]):
         
         self.active_fingerprint = self._initial_fingerprint or ""
         self.push_screen(MainScreen())
+        # Global UI Heartbeat (for 2FA ticking etc)
+        self.set_interval(1.0, self.action_refresh_ui_quiet)
+
+    def action_refresh_ui_quiet(self) -> None:
+        """Background refresh for dynamic elements (2FA)."""
+        try:
+            # We only refresh the inspector if it's currently showing a 2FA board
+            board = self.query_one("#board-container")
+            if board and hasattr(board, "children") and board.children:
+                current_board = board.children[0]
+                if current_board.__class__.__name__ == "TotpBoard":
+                    current_board.refresh()
+        except Exception:
+            pass
 
     def watch_active_fingerprint(self, old_fp: str, new_fp: str) -> None:
         """Refresh components when the profile changes."""

src/seedpass/tui_v3/widgets/inspector.py

@@ -11,7 +11,7 @@ class BaseBoard(Static):
 
     def _render_card(self, title: str, rows: list[str]) -> str:
         """Utility to render ASCII cards matching mockup style."""
-        width = 40
+        width = 50
         top = f"┌─ {title} " + "─" * (width - len(title) - 4) + "┐"
         bottom = "└" + "─" * (width - 2) + "┘"
         lines = [top]
@@ -52,6 +52,67 @@ class PasswordBoard(BaseBoard):
             self._render_card("Quick Actions", action_rows)
         ])
 
+class TotpBoard(BaseBoard):
+    """Matches '2FA Board.png' mockup."""
+    def render(self) -> str:
+        d = self.entry_data
+        app = self.app
+        
+        # Fetch live code from service
+        code = "------"
+        if app.services.get("entry") and not app.session_locked:
+            try:
+                code = app.services["entry"].get_totp_code(d.get("id"))
+            except:
+                pass
+
+        # Simple ASCII progress bar for the 30s cycle
+        import time
+        remaining = 30 - (int(time.time()) % 30)
+        bar_width = 20
+        filled = int((remaining / 30) * bar_width)
+        bar = "█" * filled + "░" * (bar_width - filled)
+
+        cred_rows = [
+            f"Label    : {d.get('label', '')}",
+            f"Code     : [b][cyan]{code}[/b]  ({remaining}s)",
+            f"Timer    : {bar}",
+            f"Period   : {d.get('period', 30)}s",
+            f"Digits   : {d.get('digits', 6)}",
+        ]
+        action_rows = [
+            "▣ Copy Code (c)  ▣ Reveal Secret (v)",
+            "▣ Show QR (g)    ▣ Archive (a)",
+        ]
+        
+        return "\n".join([
+            self._render_card("2FA Authenticator", cred_rows),
+            "",
+            self._render_card("Quick Actions", action_rows)
+        ])
+
+class SeedBoard(BaseBoard):
+    """Matches 'BIP-39 Seed Board.png' mockup."""
+    def render(self) -> str:
+        d = self.entry_data
+        cred_rows = [
+            f"Label      : {d.get('label', '')}",
+            f"Fingerprint: {d.get('fingerprint', 'Pending...')}",
+            f"Index      : {d.get('index', 0)}",
+            f"Word Count : {d.get('word_count', 24)}",
+            "Seed Phrase: [HIDDEN] (Double-press 'v' to reveal)",
+        ]
+        action_rows = [
+            "▣ Reveal Words (vv)  ▣ Show SeedQR (gg)",
+            "▣ Load Session (ml)  ▣ Archive (a)",
+        ]
+        
+        return "\n".join([
+            self._render_card("BIP-85 Derived Seed", cred_rows),
+            "",
+            self._render_card("Quick Actions", action_rows)
+        ])
+
 class NoteBoard(BaseBoard):
     """Matches 'Note Board.png' mockup."""
     def render(self) -> str:
@@ -67,7 +128,7 @@ class NoteBoard(BaseBoard):
         ]
         
         return "\n".join([
-            self._render_card("Content", content_rows),
+            self._render_card("Content Preview", content_rows),
             "",
             self._render_card("Quick Actions", action_rows)
         ])
@@ -106,14 +167,16 @@ class BoardContainer(Vertical):
         # Select appropriate board
         if kind in {"password", "stored_password"}:
             board = self._show_board("password")
-            board.entry_data = entry
         elif kind in {"document", "note"}:
             board = self._show_board("note")
-            board.entry_data = entry
+        elif kind == "totp":
+            board = self._show_board("totp")
+        elif kind in {"seed", "managed_account"}:
+            board = self._show_board("seed")
         else:
-            # Fallback for now
             board = self._show_board("password")
-            board.entry_data = entry
+            
+        board.entry_data = entry
 
     def _show_board(self, board_type: str) -> Any:
         self.remove_children()
@@ -123,6 +186,10 @@ class BoardContainer(Vertical):
             new_board = PasswordBoard()
         elif board_type == "note":
             new_board = NoteBoard()
+        elif board_type == "totp":
+            new_board = TotpBoard()
+        elif board_type == "seed":
+            new_board = SeedBoard()
         else:
             new_board = IdleBoard()
             

src/seedpass/tui_v3/widgets/sidebar.py

@@ -29,18 +29,28 @@ class ProfileTree(Tree):
             return
 
         service = app.services["profile"]
+        entry_service = app.services.get("entry")
         profiles = service.list_profiles()
         
-        # In v3, we will properly fetch nested accounts. 
-        # For this initial scaffold, we populate the top-level fingerprints.
         for fp in profiles:
-            icon = "■ " if fp == app.active_fingerprint else "□ "
+            is_active = fp == app.active_fingerprint
+            icon = "■ " if is_active else "□ "
             label = f"{icon}{fp[:12]}..." if len(fp) > 12 else f"{icon}{fp}"
-            node = self.root.add(label, data=fp, expand=True)
+            node = self.root.add(label, data=fp, expand=is_active)
             
-            # Placeholder for child accounts - in a real run, 
-            # we would query the service for sub-entries of this FP.
-            # node.add_leaf("  ├─ Managed Account 1")
+            # If this is the active profile or we have the entry service, 
+            # we can fetch nested managed accounts.
+            if entry_service and is_active:
+                # Find managed accounts in the current profile
+                # Search for all managed accounts
+                managed = entry_service.search_entries("", kinds=["managed_account"])
+                for mid, mlabel, _, _, _, _ in managed:
+                    node.add_leaf(f"├─ {mlabel}", data=f"managed:{mid}")
+                
+                # Find agents (nostr)
+                agents = entry_service.search_entries("", kinds=["nostr"])
+                for aid, alabel, _, _, _, _ in agents:
+                    node.add_leaf(f"└─ {alabel}", data=f"agent:{aid}")
 
     def on_tree_node_selected(self, event: Tree.NodeSelected) -> None:
         """Handle profile selection."""