asdf

Squash the current repository state back into one baseline commit while
preserving the README reframing and repository contents.

Constraint: User explicitly requested a single squashed commit with subject "asdf"
Confidence: high
Scope-risk: broad
Reversibility: clean
Directive: This commit intentionally rewrites published history; coordinate before future force-pushes
Tested: git status clean; local history rewritten to one commit; force-pushed main to origin and instructkr
Not-tested: Fresh clone verification after push

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()
+}