bert.hausmans 940297f214 security: implement CSP headers (API middleware + Nginx configs + dev meta tags) ...

API middleware:
- SecurityHeaders now sets Content-Security-Policy from config/security.php
- Default API policy: "default-src 'none'; frame-ancestors 'none'"
- Supports report-only mode via CSP_REPORT_ONLY env var
- Policy value configurable via CSP_POLICY env var

Nginx deployment configs (deploy/nginx/):
- security-headers.conf: shared headers for all server blocks
- csp-api.conf: restrictive JSON-only policy for api.crewli.app
- csp-spa.conf: SPA policy for app/admin (self + unsafe-inline styles)
- csp-portal.conf: portal policy matching SPA

Development:
- CSP meta tags added to all three index.html files
- Includes 'unsafe-inline' + 'unsafe-eval' for Vite HMR/loader script
- Each app allows its own ws:// port for HMR websocket

Resolves security finding A13-9.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-14 16:14:37 +02:00

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