Group the story table's rows from 100 into ranges

Every story since 100 had been given a row of its own, which is not what the
table is: rows below 054 are ranges placed by theme, and recording a story
means extending one rather than appending.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019WkxmJ5ArLEaC2RDPGkbRU

Author: jerodw