SecurityHeaders middleware widened its CSP to allow Next.js inline scripts
+ data:/blob: images (platform/internal/middleware/securityheaders.go:44,
canvas is reverse-proxied through the gin stack so it needs the permissive
policy). The two CSP asserts in securityheaders_test.go still hard-compared
against the old tight `default-src 'self'`, so they fail on main as of
this afternoon.
Fix: assert each expected CSP fragment is PRESENT in the header (substring
match) instead of byte-for-byte equality. Test intent is "CSP is set, starts
with tight default-src, contains the expected directives" — not "CSP matches
this exact string". Future subsource tuning (add a new CDN, bump blob:/data:
scope) won't re-break this test.
Caught because every PR touching anything in the monorepo currently fails
the Platform (Go) CI job on these two asserts. Fixing on a dedicated branch
so it can land ahead of every blocked PR in the queue.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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