fix: _vlog returns 0 when verbose=false (regression in install rc)

bashdep

@@ -369,8 +369,10 @@ function bashdep::_log() {
 }
 
 # Internal: print only when verbose mode is on (and silent is off).
+# Always returns 0 — "not verbose" is a normal state, not a failure.
 function bashdep::_vlog() {
-  bashdep::is_verbose && bashdep::_log "$@"
+  if bashdep::is_verbose; then bashdep::_log "$@"; fi
+  return 0
 }
 
 # Internal: return 0 when an existing dependency can be reused.

tests/unit/bashdep_test.sh

@@ -572,6 +572,59 @@ function test_bashdep_download_url_curl_failure_returns_non_zero() {
   assert_general_error
 }
 
+function test_bashdep_download_url_returns_zero_on_success() {
+  # shellcheck disable=SC2016
+  mock curl 'touch "$4"'
+  bashdep::download_url "https://example.com/tool" "$TEST_DIR" >/dev/null
+  assert_successful_code "$?"
+}
+
+function test_bashdep_download_url_returns_zero_when_verbose_off() {
+  # shellcheck disable=SC2016
+  mock curl 'touch "$4"'
+  BASHDEP_VERBOSE=false
+  bashdep::download_url "https://example.com/tool" "$TEST_DIR" >/dev/null
+  assert_successful_code "$?"
+}
+
+function test_bashdep_download_url_returns_zero_when_verbose_on() {
+  # shellcheck disable=SC2016
+  mock curl 'touch "$4"'
+  BASHDEP_VERBOSE=true
+  bashdep::download_url "https://example.com/tool" "$TEST_DIR" >/dev/null
+  assert_successful_code "$?"
+}
+
+function test_bashdep_install_returns_zero_after_real_download() {
+  # shellcheck disable=SC2016
+  mock curl 'touch "$4"'
+  BASHDEP_DIR="$TEST_DIR"
+  bashdep::install "https://example.com/a" >/dev/null
+  assert_successful_code "$?"
+}
+
+function test_bashdep_install_from_returns_zero_after_real_download() {
+  local file="$TEST_DIR/.bashdep"
+  printf 'https://example.com/a\n' > "$file"
+  # shellcheck disable=SC2016
+  mock curl 'touch "$4"'
+  BASHDEP_DIR="$TEST_DIR"
+  bashdep::install_from "$file" >/dev/null
+  assert_successful_code "$?"
+}
+
+function test_bashdep_vlog_returns_zero_when_verbose_off() {
+  BASHDEP_VERBOSE=false
+  bashdep::_vlog hi
+  assert_successful_code "$?"
+}
+
+function test_bashdep_vlog_returns_zero_when_verbose_on() {
+  BASHDEP_VERBOSE=true
+  bashdep::_vlog hi >/dev/null
+  assert_successful_code "$?"
+}
+
 function test_bashdep_download_url_writes_lockfile_entry() {
   local url="https://example.com/tool"
   mock curl "true"