Deterministic default (ListBasedTextFilter) backed by a configurable JSON
term list, with normalization (case-fold, leetspeak substitutions,
stripped punctuation/spacing between letters) so trivial evasion doesn't
slip through. Supports both reject (blocking) and redact (asterisk
replacement) modes. TextFilter is a Protocol, leaving an explicit
extension point for a future third-party moderation provider.
Standalone module, not wired into any router/endpoint -- sibling chat
tasks depend on this one. No DB/migration work.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Y2FESCaMXeJpC9gSctiEeD
daddy
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