fix: add missing script_name prefix to hardcoded URLs in templates

[torbenbrodt]

Summary

Fix AGENTS.md pattern #6 violations across 13 templates where /tenant/... URLs were hardcoded without the {{ script_name }} prefix, causing 404s in path-prefix proxy deployments (nginx at /admin).

Problem

When the sales agent is deployed behind a reverse proxy at a sub-path (e.g., nginx serving the app at /admin), all hardcoded /tenant/... URLs in templates were missing the {{ script_name }} prefix. This caused 404 errors for form actions, anchor hrefs, JavaScript window.location assignments, and fetch() calls — any navigation or API call that used a literal path instead of the template variable.

Fix

Replaced all hardcoded /tenant/... paths with {{ script_name }}/tenant/... equivalents. For JavaScript contexts where the Jinja variable isn't directly available, a scriptName JS variable was introduced (e.g., in orders_browser.html) and used in template literals.

Before:

<form action="/tenant/settings">
<a href="/tenant/products">
window.location = '/tenant/dashboard';
fetch('/tenant/inventory')

After:

<form action="{{ script_name }}/tenant/settings">
<a href="{{ script_name }}/tenant/products">
window.location = '{{ script_name }}/tenant/dashboard';
const scriptName = '{{ script_name }}'; fetch(`${scriptName}/tenant/inventory`)

Files Changed

• templates/tenant_settings.html — 10 form actions and links prefixed
• templates/product_inventory_config.html — 3 hrefs + 2 JS window.location calls prefixed
• templates/media_buy_approval.html — 4 form actions and links prefixed
• templates/policy_review.html — breadcrumbs, forms, links prefixed
• templates/policy_rules.html — breadcrumbs, forms, links prefixed
• templates/policy_settings.html — breadcrumbs, forms, links prefixed
• templates/policy_settings_comprehensive.html — breadcrumbs, forms, links prefixed
• templates/inventory_browser.html — 2 JS fetch URLs prefixed
• templates/orders_browser.html — added scriptName JS var + 1 template literal prefixed
• templates/tenant_dashboard.html — 1 JS window.location prefixed
• templates/edit_product_mock.html — URL prefixed
• templates/workflows.html — URL prefixed
• templates/signup_complete.html — URL prefixed

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