screengrabber

docs: update link to deploy.yml in deployment documentation for clarity

docs: enhance configuration and deployment documentation for clarity and detail

security: harden Caddy config with HSTS, X-Content-Type-Options, X-Frame-Options

docs: replace self-hosting section in overview with summary and link to deployment page

docs: improve deployment page — clarify host proxy edits, expand Caddy volume note, fix network rename snippet, add config cross-reference