Eliminate Python dependency: embed frontend assets in odoo-go

- Copy all OWL frontend assets (JS/CSS/XML/fonts/images) into frontend/
  directory (2925 files, 43MB) — no more runtime reads from Python Odoo
- Replace OdooAddonsPath config with FrontendDir pointing to local frontend/
- Rewire bundle.go, static.go, templates.go, webclient.go to read from
  frontend/ instead of external Python Odoo addons directory
- Auto-detect frontend/ and build/ dirs relative to binary in main.go
- Delete obsolete Python helper scripts (tools/*.py)

The Go server is now fully self-contained: single binary + frontend/ folder.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/crm/static/src/activity_menu_patch.js

@@ -0,0 +1,55 @@
+import { Domain } from "@web/core/domain";
+import { ActivityMenu } from "@mail/core/web/activity_menu";
+import { patch } from "@web/core/utils/patch";
+
+patch(ActivityMenu.prototype, {
+    availableViews(group) {
+        if (group.model === "crm.lead") {
+            return [
+                [false, "list"],
+                [false, "kanban"],
+                [false, "form"],
+                [false, "calendar"],
+                [false, "pivot"],
+                [false, "graph"],
+                [false, "activity"],
+            ];
+        }
+        return super.availableViews(...arguments);
+    },
+
+    openActivityGroup(group, filter = "all", newWindow) {
+        // fetch the data from the button otherwise fetch the ones from the parent (.o_ActivityMenuView_activityGroup).
+        const context = {};
+        if (group.model === "crm.lead") {
+            this.dropdown.close();
+            if (filter === "my" || filter === "all") {
+                context["search_default_activities_overdue"] = 1;
+                context["search_default_activities_today"] = 1;
+            } else if (filter === "overdue") {
+                context["search_default_activities_overdue"] = 1;
+            } else if (filter === "today") {
+                context["search_default_activities_today"] = 1;
+            } else {
+                context["search_default_activities_upcoming_all"] = 1;
+            }
+            // Necessary because activity_ids of mail.activity.mixin has auto_join
+            // So, duplicates are faking the count and "Load more" doesn't show up
+            context["force_search_count"] = 1;
+            this.action.loadAction("crm.crm_lead_action_my_activities").then((action) => {
+                // to show lost leads in the activity
+                action.domain = Domain.and([
+                    action.domain || [],
+                    [["active", "in", [true, false]]],
+                ]).toList();
+                this.action.doAction(action, {
+                    newWindow,
+                    additionalContext: context,
+                    clearBreadcrumbs: true,
+                });
+            });
+        } else {
+            return super.openActivityGroup(...arguments);
+        }
+    },
+});