fix(shell): harden project_open TTL parsing, error output, and scan streaming

Author: codepuncher

shell/aliases

@@ -293,8 +293,10 @@ _project_open_build_cache() {
 	cache="$(_project_open_cache_file)"
 	stamp="${cache}.ts"
 	ttl="${PROJECT_OPEN_CACHE_TTL:-3}"
+	case "${ttl}" in '' | *[!0-9]*) ttl=3 ;; esac
 	now="$(date +%s)"
 	last="$(cat "${stamp}" 2>/dev/null || echo 0)"
+	case "${last}" in '' | *[!0-9]*) last=0 ;; esac
 	(( now - last < ttl )) && return 0
 
 	dir="${cache%/*}"
@@ -325,7 +327,7 @@ po_refresh() {
 }
 
 _project_open_resolve() {
-	local name="${1}" cache_only="${2}" cache line scanned
+	local name="${1}" cache_only="${2}" cache line tmp
 	[[ -n "${name}" ]] || return 1
 	cache="$(_project_open_cache_file)"
 	if [[ -f "${cache}" ]]; then
@@ -334,10 +336,12 @@ _project_open_resolve() {
 		done < "${cache}"
 	fi
 	[[ -n "${cache_only}" ]] && return 1
-	scanned="$(_project_open_scan)"
+	tmp="$(mktemp "${TMPDIR:-/tmp}/project_open_scan.XXXXXX")" || return 1
+	_project_open_scan >"${tmp}"
 	while IFS= read -r line || [[ -n "${line}" ]]; do
-		[[ "${line##*/}" == "${name}" ]] && { printf '%s\n' "${line}"; return 0; }
-	done <<< "${scanned}"
+		[[ "${line##*/}" == "${name}" ]] && { printf '%s\n' "${line}"; rm -f "${tmp}"; return 0; }
+	done < "${tmp}"
+	rm -f "${tmp}"
 	return 1
 }
 
@@ -351,7 +355,7 @@ project_open() {
 	else
 		NEW_PATH="$(_project_open_resolve "${1}")"
 		if [ -z "${NEW_PATH}" ]; then
-			echo "No project named ${1} under ${CODE_PATH}" >&2
+			printf 'No project named %s under %s\n' "${1}" "${CODE_PATH}" >&2
 			return 1
 		fi
 		tmux rename-window "${1}"