perf(tools.func, alpine-tools.func): replace direct /etc/os-release reads with get_os_info(), echo|tr with bash builtins, consolidate pipelines

- get_os_info(): single while-read replaces 4 awk subprocesses on first call
- manage_tool_repository(): 7 awk|tr pipelines → get_os_info() cached lookups
- setup_hwaccel(): 3 grep|tr pipelines → get_os_info()
- setup_java/mysql/php/postgresql/clickhouse(): 2 awk|tr pipelines each → get_os_info()
- 6× echo|tr -d ' ' → bash parameter expansion (${var// /})
- 3× mod=$(echo|tr) → bash ${mod//[[:space:]]/}
- npm/apt-cache/cargo pipelines: grep|awk|tr → single awk with gsub
- COMBINED_MODULES: echo|tr|awk|paste (4 proc) → single awk with RS
- download_with_progress: awk|tr → awk gsub (both tools.func and alpine-tools.func)

Eliminates ~30 subprocess forks across typical tool setup paths.

misc/alpine-tools.func

@@ -53,7 +53,7 @@ download_with_progress() {
   # $1 url, $2 dest
   local url="$1" out="$2" cl
   need_tool curl pv || return 1
-  cl=$(curl -fsSLI "$url" 2>/dev/null | awk 'tolower($0) ~ /^content-length:/ {print $2}' | tr -d '\r')
+  cl=$(curl -fsSLI "$url" 2>/dev/null | awk 'tolower($0) ~ /^content-length:/ {gsub(/\r/,""); print $2}')
   if [ -n "$cl" ]; then
     curl -fsSL "$url" | pv -s "$cl" >"$out" || {
       msg_error "Download failed: $url"