* fix(sub): honor trustedProxyCIDRs before forwarded URLs
* fix(sub): avoid unused trust-setting lookups
Skip the trustedProxyCIDRs lookup when no forwarded header can affect a subscription URL. Keep the shipped proxy default in one exported setting constant and document the subscription-link behavior for custom proxy boundaries.
* fix(frontend): meet config text contrast requirements
Keep compact configuration text readable in the light theme and satisfy the Storybook accessibility check.
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Co-authored-by: PathGao <gaoyanbo@gaoyanbodeMacBook-Air.local>