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Fix stale block page preview by cache-busting static assets

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The preview iframe stayed blank after a redeploy because /static/js/app.js
is served with a 24h Cache-Control and no versioning, so browsers kept
using the pre-existing cached copy that predated the preview code. Static
CSS/JS references now carry a ?v=<build commit> query string so a new
build is never masked by a stale cache. Also makes the CSP's frame-src
explicit for the preview iframe rather than relying on the default-src
fallback.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TTKpGMQzpfDsvedu1hvSUf
This commit is contained in:
owen
2026-08-17 00:35:26 -05:00
co-authored by Claude Sonnet 5
parent 4895c8fd1e
commit e6deb5fe84
3 changed files with 17 additions and 2 deletions
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web/templates/layout.html
+2 -2
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@@ -8,7 +8,7 @@
<link rel="icon" href="/static/img/favicon.svg" type="image/svg+xml">
<link rel="stylesheet" href="/static/css/bootstrap.min.css">
<link rel="stylesheet" href="/static/css/bootstrap-icons.min.css">
<link rel="stylesheet" href="/static/css/app.css">
<link rel="stylesheet" href="/static/css/app.css?v={{.Asset}}">
</head>
<body>
@@ -119,7 +119,7 @@
</div>
<script src="/static/js/bootstrap.bundle.min.js"></script>
<script src="/static/js/app.js"></script>
<script src="/static/js/app.js?v={{.Asset}}"></script>
{{block "scripts" .}}{{end}}
</body>
</html>