* feat(coding-agent): add feature hints * feat(coding-agent): expand feature hints * feat(coding-agent): broaden feature hint catalog * refactor(coding-agent): simplify feature hints * refactor(coding-agent): clarify feature hints * feat(coding-agent): hint automatic agent features * refactor(coding-agent): focus automatic feature hints * refactor(coding-agent): clarify self-improvement hint * refactor(coding-agent): sharpen self-improvement hint * feat(coding-agent): animate feature hints * fix(tui): align autocomplete popup * refactor(coding-agent): polish hint shimmer * refactor(coding-agent): refine hint glint * refactor(coding-agent): soften hint glint * refactor(coding-agent): tune hint glint * fix(coding-agent): preserve delayed hints * fix(tui): preserve cramped autocomplete * fix(tui): trim cramped popup padding * refactor(coding-agent): soften hint shimmer * test(coding-agent): cover hint reset cleanup * fix(coding-agent): preserve hints through compaction * fix(tui): retain top-edge autocomplete * fix(coding-agent): classify hint run starts