fix: add New Spreadsheet to file manager action menu

The file manager uses js_class='file_kanban' — a custom JS controller
that doesn't expose the directory form view header. Add a server action
bound to dms.file (list + kanban) so 'New Spreadsheet' appears in the
Files gear menu, alongside 'Import records'.

Pre-fills directory_id from context (default_directory_id or active_id)
so the wizard opens ready to use when a directory is selected in the
left sidebar.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: dnplkndll

dms_spreadsheet/models/dms_file.py

@@ -110,6 +110,23 @@ def open_spreadsheet(self):
             "params": {"spreadsheet_id": self.id, "model": self._name},
         }
 
+    @api.model
+    def action_open_new_spreadsheet(self):
+        """Open the New Spreadsheet wizard, pre-filling directory from context.
+
+        Called from the server action bound to the file kanban/list views so
+        that 'New Spreadsheet' appears in the Files ⚙ action menu.
+        """
+        ctx = self.env.context
+        directory_id = ctx.get("default_directory_id") or ctx.get("active_id")
+        return {
+            "type": "ir.actions.act_window",
+            "res_model": "dms.spreadsheet.create",
+            "view_mode": "form",
+            "target": "new",
+            "context": {"default_directory_id": directory_id},
+        }
+
     # ── Computed helpers ─────────────────────────────────────────────────────
 
     @api.depends("handler")

dms_spreadsheet/views/dms_file_views.xml

@@ -21,6 +21,16 @@
         </field>
     </record>
 
+    <!-- Server action: "New Spreadsheet" in the Files ⚙ action menu -->
+    <record id="action_server_new_spreadsheet" model="ir.actions.server">
+        <field name="name">New Spreadsheet</field>
+        <field name="model_id" ref="dms.model_dms_file" />
+        <field name="binding_model_id" ref="dms.model_dms_file" />
+        <field name="binding_view_types">list,kanban</field>
+        <field name="state">code</field>
+        <field name="code">action = model.action_open_new_spreadsheet()</field>
+    </record>
+
     <!-- Add spreadsheet filter to file search view -->
     <record id="view_dms_file_search_spreadsheet" model="ir.ui.view">
         <field name="name">dms.file.search.spreadsheet</field>