chore: drop unrelated planning docs accidentally added to this PR

dda760f staged with `git add -A -- internal/ docs/`, which swept in two
untracked local planning documents under docs/superpowers/ left over from the
#114 per-route-auth work. They are unrelated to this change, account for 595 of
the PR's ~1100 added lines, and nothing in the tracked tree references them.

Untracked only — the files stay on disk as local scratch.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: piyalbasu