[Init] Initial commit - NetMesh terminal manager

components/terminal/runtime/altKeyOptions.ts

@@ -0,0 +1,20 @@
+export interface TerminalAltKeyOptions {
+  /** xterm.js: treat macOS Option as the Meta key (emit ESC-prefixed sequences). */
+  macOptionIsMeta: boolean;
+  /** xterm.js: Option+click moves the cursor. Must be off when Option is Meta. */
+  altClickMovesCursor: boolean;
+}
+
+/**
+ * Map the user's "Use Option as Meta key" setting to xterm.js options.
+ *
+ * Kept in one place so terminal init (createXTermRuntime) and the live settings
+ * sync (Terminal.tsx) can't drift — that drift is what left `macOptionIsMeta`
+ * unset everywhere and broke Option/Meta shortcuts on macOS (issue #1078).
+ */
+export function terminalAltKeyOptions(altAsMeta: boolean): TerminalAltKeyOptions {
+  return {
+    macOptionIsMeta: altAsMeta,
+    altClickMovesCursor: !altAsMeta,
+  };
+}