Function TestResolvedKeyLiteralDollarSurvives

internal/config/config_test.go:702–716

TestResolvedKeyLiteralDollarSurvives: expansion applies ONLY when the whole key is a ${VAR} reference. A literal proxy key containing '$' (llama.cpp --api-key, LiteLLM master keys) must pass through byte-identical: os.ExpandEnv would silently corrupt it ("pa$$word" -> "paword") and every request 401

(t *testing.T)

// os.ExpandEnv would silently corrupt it ("pa$$word" -> "paword") and every
// request 401s with nothing anywhere hinting the key was rewritten.
func TestResolvedKeyLiteralDollarSurvives(t *testing.T) {
	for _, key := range []string{
		"pa$$word123",
		"sk-abc$def",
		"trailing$",
		"$UPFRONT-rest",
		"${not-a-valid-name}", // ${...} but not an env-var name: literal
		"prefix-${REAL_VAR}",  // reference not the whole key: literal
	} {
		p := &Profile{Key: key}
		if got := p.ResolvedKey(); got != key {
			t.Errorf("ResolvedKey(%q) = %q, want the literal back", key, got)
		}
	}
}

// TestURLOverrideDoesNotPersist: a CODEHAMR_URL override lives in
// cfg.URLOverride and ActiveURL reflects it, but Save writes only the stored