Theme "Tintenblau" (dark and light)

Palette from the Tintenblau desktop theme (colors.toml, neovim.lua, zed.json):
ink blue with cream text, paper with dark ink. Also in the terminal client's
palettes.

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

web/src/themes/index.ts

@@ -30,3 +30,5 @@ import "./everforest-dark.css";
 import "./everforest-light.css";
 import "./kanagawa-dark.css";
 import "./kanagawa-light.css";
+import "./tintenblau-dark.css";
+import "./tintenblau-light.css";