refactor: pieces paper voice — first-person consistent, remove "this paper" frame
Changed abstract: removed "This paper argues that" construction (which VOICE.md identifies as framing to avoid when reader already knows they're reading a paper). Changed "We trace/examine/argue" to first-person "I trace/examine" and dropped the "We" entirely for the final insight. Applied VOICE.md guidelines for directness.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>