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System tags (wip/banner/editor) already get heads (kind=general) and aren't filtered from suggestions, but they surfaced only at each head's precision-tuned suggest_threshold — high enough to hide the borderline/false-positive guesses the operator wants to SEE and REJECT (hard-negative mining: 'negatively reinforce what isn't a system tag'). score_image now uses a flat _SYSTEM_TAG_SUGGEST_FLOOR (0.65, operator-set) for system-tag heads instead of their auto threshold; content-tag heads keep their own, and the typed-dropdown threshold_override still overrides everything. _current_heads carries Tag.is_system into the head meta to drive it. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CDgx8bQS5YrGRK76v8HUnM