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/purchase/static/tests/tours/purchase_flow_tour.js

@@ -0,0 +1,76 @@
+import { inputFiles } from "@web/../tests/utils";
+import { registry } from "@web/core/registry";
+
+registry.category("web_tour.tours").add("test_basic_purchase_flow_with_minimal_access_rights", {
+    steps: () => [
+        {
+            trigger: ".o_menuitem[href='/odoo/purchase']",
+            run: "click",
+        },
+        {
+            content: "Check that at least one RFQ is present in the view",
+            trigger: ".o_purchase_dashboard_list_view .o_data_row",
+        },
+        {
+            trigger: ".o_list_button_add",
+            run: "click",
+        },
+        {
+            trigger: ".o_input[id=partner_id_0]",
+            run: "edit partner_a",
+        },
+        {
+            trigger: ".dropdown-item:contains(partner_a)",
+            run: "click",
+        },
+        {
+            trigger: ".o_field_x2many_list_row_add > a",
+            run: "click",
+        },
+        {
+            trigger: ".o_data_row .o_input",
+            run: "edit Test Product",
+        },
+        {
+            trigger: ".dropdown-item:contains('Test Product')",
+            run: "click",
+        },
+        {
+            content: "Wait for the tax to be set by the onchange",
+            trigger: ".o_field_many2many_tags[name=tax_ids] .o_tag",
+        },
+        {
+            trigger: ".o_data_cell[name=price_unit]",
+            run: "click",
+        },
+        {
+            trigger: ".o_data_cell[name=price_unit] .o_input",
+            run: "edit 3",
+        },
+        {
+            trigger: "button[name=button_confirm]",
+            run: "click",
+        },
+        {
+            trigger: ".o_statusbar_status .o_arrow_button_current:contains(Purchase Order)",
+        },
+        {
+            content: "Upload the vendor bill",
+            trigger: ".o_widget_purchase_file_uploader",
+            run: async () => {
+                const testFile = new File(["Vendor, Bill"], "my_vendor_bill.png", {
+                    type: "image/*",
+                });
+                await inputFiles(".o_widget_purchase_file_uploader input", [testFile]);
+            },
+        },
+        {
+            content: "Check that we are in the invoice form view",
+            trigger: ".o_statusbar_status:contains(Posted) .o_arrow_button_current:contains(Draft)",
+        },
+        {
+            content: "Check that the invoice is linked to the sale order",
+            trigger: "button[name=action_view_source_purchase_orders]",
+        },
+    ],
+});