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netwatch/configs/security-headers.conf
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Move to the layout REPO_POLICIES.md gives (closes #30)
The Go module moves from backend/ to the root (go.mod, go.sum,
.golangci.yml, cmd/, internal/), the page's source to web/, and nginx's
two files to configs/. backend/ is gone: its LICENSE and .dockerignore
are deleted, and its .gitignore entries, README and scripts are folded
into the root ones. script/build builds the server binary after the
frontend; script/run and script/clean move up from backend/script/;
make test, lint, fmt and fmt-check do what the backend's did. Vite's
root is web/ and it still builds into dist/. go.mod ignores
node_modules/, whose npm packages can ship .go files. script/bootstrap
no longer installs gcc, which only the host Go tests needed.

Model: opus-5-5
2026-10-14 09:33:01 +00:00

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# The security headers REPO_POLICIES.md requires on every response.
# configs/nginx.conf includes this file, which Dockerfile copies to
# /etc/nginx/security-headers.conf. always sends each header on error
# responses too.
add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
# Scripts and styles load only from the page's own origin. Inline ones
# are blocked, style attributes in markup included, so style elements
# through classes or element.style. data: images are for the favicon
# in web/index.html. connect-src is * because the browser checks each
# probe in web/src/main.js against it, and also every redirect the probe
# follows, and several of those hosts redirect to others; a list of
# hosts here would block those probes. It also covers the reports the
# page sends to its own origin.
add_header Content-Security-Policy "default-src 'self'; connect-src *; img-src 'self' data:; object-src 'none'; base-uri 'none'; form-action 'none'; frame-ancestors 'none'" always;
add_header X-Frame-Options DENY always;
add_header X-Content-Type-Options nosniff always;
# The probed hosts are not told where the page is served from.
add_header Referrer-Policy no-referrer always;
add_header Permissions-Policy "accelerometer=(), camera=(), display-capture=(), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), midi=(), payment=(), usb=()" always;