fix(coding-agent): share theme across package scopes

closes #4333

packages/coding-agent/src/modes/interactive/theme/theme.ts

@@ -658,6 +658,7 @@ function getDefaultTheme(): string {
 
 // Use globalThis to share theme across module loaders (tsx + jiti in dev mode)
 const THEME_KEY = Symbol.for("@earendil-works/pi-coding-agent:theme");
+const THEME_KEY_OLD = Symbol.for("@mariozechner/pi-coding-agent:theme");
 
 // Export theme as a getter that reads from globalThis
 // This ensures all module instances (tsx, jiti) see the same theme
@@ -671,6 +672,7 @@ export const theme: Theme = new Proxy({} as Theme, {
 
 function setGlobalTheme(t: Theme): void {
 	(globalThis as Record<symbol, Theme>)[THEME_KEY] = t;
+	(globalThis as Record<symbol, Theme>)[THEME_KEY_OLD] = t;
 }
 
 let currentThemeName: string | undefined;