Drop the assistant's ⋯ menu; hiding is a right-click

Its two entries were "Thu nhỏ", which the − button immediately to its left
already does, and "Ẩn vào cạnh phải". A drop-list whose real content is one
action, half of it duplicating its neighbour, is chrome — removed at the user's
request.

Nothing became unreachable: collapsing is the − button and the dot itself,
hiding is a right-click on the dot (already there, and named in its tooltip) or
now on the open panel's header too.

This is a deliberate deviation from the audit page, which asks for "'Ẩn trợ lý'
dời vào menu ⋯". check_design_parity records it as that rather than quietly
scoring it done — the item is relabelled and its detail says where the action
went. check_help_dock stopped reading the menu's contents and now exercises the
routes: − collapses, the dot carries a context menu, hide reaches the edge.

24/24 checkers pass.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

ui/help_agent_widget.py

@@ -255,27 +255,17 @@ class HelpAgentWidget(QWidget):
         self.min_btn.setToolTip(tr("help_agent.collapse_tooltip"))
         self.min_btn.clicked.connect(self._collapse)
         hb.addWidget(self.min_btn)
-        # "Hide to the right edge" lives here now, next to "minimise", instead of
-        # as a permanent 18px chevron on every screen. Same action, offered where
-        # the user is already interacting with the assistant.
-        self.more_btn = QPushButton("⋯", header)
-        self.more_btn.setObjectName("helpMinBtn")
-        self.more_btn.setFixedSize(24, 24)
-        self.more_btn.setCursor(Qt.PointingHandCursor)
-        self.more_btn.setToolTip(tr("help_agent.more_tooltip"))
-        menu = QMenu(self.more_btn)
-        self.act_collapse = menu.addAction(tr("help_agent.collapse_tooltip"))
-        self.act_collapse.triggered.connect(self._collapse)
-        self.act_hide = menu.addAction(tr("help_agent.hide_tooltip"))
-        self.act_hide.triggered.connect(self._hide_to_edge)
-        # The old build put a chevron button beside the dot that hid the
-        # assistant in one click. The drawing has no such button — the dot is
-        # 26px, no text, no chevron — so the same reach comes back as a right-
-        # click on the dot rather than as pixels next to it.
-        self.launcher.setContextMenuPolicy(Qt.CustomContextMenu)
-        self.launcher.customContextMenuRequested.connect(self._dot_menu)
-        self.more_btn.setMenu(menu)
-        hb.addWidget(self.more_btn)
+        # No ⋯ menu. The audit page put "Ẩn trợ lý" in one, but its two entries
+        # were "thu nhỏ" — which the − button beside it already does — and
+        # "ẩn vào cạnh phải". A drop-list to reach one action that duplicates
+        # its neighbour is chrome; removed at the user's request.
+        #
+        # Hiding stays reachable by right-click, on the header while the panel
+        # is open and on the dot while it is shut, so no route is lost.
+        for target in (header, self.launcher):
+            target.setContextMenuPolicy(Qt.CustomContextMenu)
+            target.customContextMenuRequested.connect(
+                lambda pos, w=target: self._hide_menu(w, pos))
         v.addWidget(header)
 
         # Conversation log
@@ -316,15 +306,18 @@ class HelpAgentWidget(QWidget):
         self._state = _LAUNCHER_ST
         self._apply_state()
 
-    def _dot_menu(self, pos) -> None:
-        """Right-click on the dot: hide to the edge, the one action that means
-        anything while the panel is shut ("collapse to dot" already happened)."""
+    def _hide_menu(self, widget, pos) -> None:
+        """Right-click, on the dot or the open panel's header: hide to the edge.
+
+        The only action worth offering here — collapsing is what the − button
+        and the dot itself already are.
+        """
         from PySide6.QtWidgets import QMenu
 
-        menu = QMenu(self.launcher)
+        menu = QMenu(widget)
         act = menu.addAction(tr("help_agent.hide_tooltip"))
         act.triggered.connect(self._hide_to_edge)
-        menu.exec(self.launcher.mapToGlobal(pos))
+        menu.exec(widget.mapToGlobal(pos))
 
     def _hide_to_edge(self) -> None:
         self._state = _HIDDEN
@@ -483,7 +476,4 @@ class HelpAgentWidget(QWidget):
             self.launcher.setText(f"  {tr('help_agent.badge')}")
             self._layout_launcher()
         self.min_btn.setToolTip(tr("help_agent.collapse_tooltip"))
-        self.more_btn.setToolTip(tr("help_agent.more_tooltip"))
-        self.act_collapse.setText(tr("help_agent.collapse_tooltip"))
-        self.act_hide.setText(tr("help_agent.hide_tooltip"))
         self.edge_tab.setToolTip(tr("help_agent.show_tooltip"))