Refactor test messages for clarity and consistency in regex tests

mcp-server/run-tests.sh

@@ -233,7 +233,6 @@ for _arg in "$@"; do
 	esac
 done
 if [[ $_running_ui -eq 1 && $_cv2_ok -eq 0 ]]; then
-	# trunk-ignore(shellcheck/SC2059): color format strings are intentional
 	printf '\033[33m[pre-flight] tests/ui tier detected, but opencv-python-headless is not installed — deselecting.\033[0m\n'
 	printf '             install with: .venv/bin/pip install -e "mcp-server/.[ui]"\n'
 	echo
@@ -246,7 +245,6 @@ fi
 # recovery hook also benefits from having uhubctl available across the
 # whole suite.
 if ! command -v uhubctl >/dev/null 2>&1; then
-	# trunk-ignore(shellcheck/SC2059): color format strings needed for %b / escape sequences
 	printf "\033[33m[pre-flight] uhubctl not found on PATH — recovery tier will skip, and\n"
 	printf "             wedged-device auto-recovery is disabled.\033[0m\n"
 	printf "             install with: brew install uhubctl (macOS) or apt install uhubctl (Debian/Ubuntu).\n"

mcp-server/tests/unit/test_ui_screen_log.py

@@ -75,6 +75,6 @@ class TestRegexAnchoring:
         assert FRAME_RE.search("Screen: frame 0/0 name=home reason=next") is not None
 
     def test_regex_allows_unusual_names(self) -> None:
-        """Name is `\\S+`, so compound names with underscores/digits match."""
+        r"""Name is `\S+`, so compound names with underscores/digits match."""
         m = FRAME_RE.search("Screen: frame 5/10 name=nodelist_hopsignal reason=fn_f2")
         assert m is not None and m["name"] == "nodelist_hopsignal"