Adds a security policy so vulnerability reports are routed to the private
advisory form instead of public issues, and defines scope so the intentional
no-auth LAN design is not re-reported as a vulnerability.
Also adds a security contact link to the issue template chooser (blank issues
are disabled, so there was previously no route for a private report), and
extends .gitignore to cover .env variants, key/cert files, .npmrc/.netrc and
local copies of the deployed compose file. A local management compose with real
generated DB passwords was committed to a branch once before; secret scanning
push protection now covers that case too.
No tracked file is affected by the new ignore rules.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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