slides/end: new hand-drawn Claude+Copilot embrace cartoon, 3 cardinal outcomes

The Giphy knockout frame was pulled; in its place is a hand-drawn
SVG cartoon showing two boxy Rock'em-Sock'em-style robots in a
brotherly embrace inside a boxing ring.  The blue robot is labelled
"Claude"; the red is labelled "Copilot".  Both have smiling mouths
and arms across each other's shoulders.  The cartoon is scaled to
fit the bottom-right corner of the slide to free the rest of the
canvas for the two text boxes scientists asked for.

New upper panel: "The three cardinal outcomes the scientists want":
  1. A unified back-end that applies to two reflectometers
  2. Interfaces that are appropriate, feature-rich, and maintainable
  3. A back-end that is easy to extend to new workflows

Existing "What we take away from today" panel is kept as the lower
text box, with one extra bullet added for the UI-locked-during-
reduction observation from slide 5.

Because the cartoon is hand-drawn SVG, no external image asset is
needed and the slide is fully self-contained.  Footer footnote:
"Robots cartoon: hand-drawn SVG.  No resemblance to any specific AI
assistant intended beyond the affectionate branding."

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>