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/account/static/tests/tours/deductible_amount_column.js

@@ -0,0 +1,28 @@
+import { registry } from '@web/core/registry';
+import { stepUtils } from "@web_tour/tour_utils";
+
+registry.category("web_tour.tours").add("deductible_amount_column", {
+    url: "/odoo/vendor-bills/new",
+    steps: () => [
+    {
+        content: "Add item",
+        trigger: "div[name='invoice_line_ids'] .o_field_x2many_list_row_add a:contains('Add a line')",
+        run: "click",
+    },
+    {
+        content: "Edit name",
+        trigger: ".o_field_widget[name='name'] .o_input",
+        run: "edit Laptop"
+    },
+    {
+        content: "Edit deductible amount",
+        trigger: ".o_field_widget[name='deductible_amount'] > .o_input",
+        run: "edit 80"
+    },
+    {
+        content: "Set Bill Date",
+        trigger: "input[data-field=invoice_date]",
+        run: "edit 2025-12-01",
+    },
+    ...stepUtils.saveForm(),
+]})