Complete the ⌘K "jump to" table of contents

Details

The command palette's "Go to" group now lists every section in page order with
appropriate titles, instead of only the mid-page numbered ones:
- Adds Home (#hero), Now (#now), the two interactive demos, About, Impact at a
  glance (#stats), and the footer.
- The two interactive examples use hierarchical titles that mirror their
  eyebrows: "Interactive · Scaling laws" and "Interactive · Neurosymbolic AI".
- The bottom-most links section is reachable as "Links & footer" (#v3-footer).
- Order now follows the DOM: Home → Now → the two Interactive demos → About →
  Research focus → Publications → Projects → Impact at a glance → Experience →
  Education → Teaching & talks → Recognition & awards → News → Contact →
  Links & footer. ("Back to top" folded into the leading "Home" entry.)
Gives the "now" panel an id so it's a valid jump target. Verified: all 16
targets resolve to real section ids, the palette renders all entries in order
with zero errors (headless), tsc clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014c7dbCGbQxtWedKRSx4sJi

Files changed (2)