feat: fork ink and make it work nicely

ui-tui/packages/hermes-ink/src/ink/supports-hyperlinks.ts

@@ -0,0 +1,51 @@
+import supportsHyperlinksLib from 'supports-hyperlinks'
+
+// Additional terminals that support OSC 8 hyperlinks but aren't detected by supports-hyperlinks.
+// Checked against both TERM_PROGRAM and LC_TERMINAL (the latter is preserved inside tmux).
+export const ADDITIONAL_HYPERLINK_TERMINALS = ['ghostty', 'Hyper', 'kitty', 'alacritty', 'iTerm.app', 'iTerm2']
+
+type EnvLike = Record<string, string | undefined>
+
+type SupportsHyperlinksOptions = {
+  env?: EnvLike
+  stdoutSupported?: boolean
+}
+
+/**
+ * Returns whether stdout supports OSC 8 hyperlinks.
+ * Extends the supports-hyperlinks library with additional terminal detection.
+ * @param options Optional overrides for testing (env, stdoutSupported)
+ */
+export function supportsHyperlinks(options?: SupportsHyperlinksOptions): boolean {
+  const stdoutSupported = options?.stdoutSupported ?? supportsHyperlinksLib.stdout
+
+  if (stdoutSupported) {
+    return true
+  }
+
+  const env = options?.env ?? process.env
+
+  // Check for additional terminals not detected by supports-hyperlinks
+  const termProgram = env['TERM_PROGRAM']
+
+  if (termProgram && ADDITIONAL_HYPERLINK_TERMINALS.includes(termProgram)) {
+    return true
+  }
+
+  // LC_TERMINAL is set by some terminals (e.g. iTerm2) and preserved inside tmux,
+  // where TERM_PROGRAM is overwritten to 'tmux'.
+  const lcTerminal = env['LC_TERMINAL']
+
+  if (lcTerminal && ADDITIONAL_HYPERLINK_TERMINALS.includes(lcTerminal)) {
+    return true
+  }
+
+  // Kitty sets TERM=xterm-kitty
+  const term = env['TERM']
+
+  if (term?.includes('kitty')) {
+    return true
+  }
+
+  return false
+}