Apply QA: brand-blue buttons, no DNA, theme-aware fireworks and footer

- Buttons return to the brand accent colors (primary fill, accent outline)
- Current Ventures shows only the copy beside the portfolio dashboard; the
  DNA helix and its library are removed
- The journey fireworks stage, pins and particles switch to a light palette
  in light mode
- The footer follows the theme instead of staying black

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

static/licenses/three.js-bundled-in-dna-hero.txt

@@ -1,21 +0,0 @@
-The MIT License
-
-Copyright © 2010-2025 three.js authors
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.