init: add source code from src.zip

src/utils/sessionEnvVars.ts

@@ -0,0 +1,22 @@
+/**
+ * Session-scoped environment variables set via /env.
+ * Applied only to spawned child processes (via bash provider env overrides),
+ * not to the REPL process itself.
+ */
+const sessionEnvVars = new Map<string, string>()
+
+export function getSessionEnvVars(): ReadonlyMap<string, string> {
+  return sessionEnvVars
+}
+
+export function setSessionEnvVar(name: string, value: string): void {
+  sessionEnvVars.set(name, value)
+}
+
+export function deleteSessionEnvVar(name: string): void {
+  sessionEnvVars.delete(name)
+}
+
+export function clearSessionEnvVars(): void {
+  sessionEnvVars.clear()
+}