misc: read all interactive prompts from /dev/tty, drain leftover input on read failure

misc/alpine-install.func

@@ -126,7 +126,7 @@ network_check() {
   fi
 
   if [[ $ipv4_connected == false ]]; then
-    read -r -p "No Internet detected, would you like to continue anyway? <y/N> " prompt
+    read -r -p "No Internet detected, would you like to continue anyway? <y/N> " prompt </dev/tty
     if [[ "${prompt,,}" =~ ^(y|yes)$ ]]; then
       echo -e "${INFO}${RD}Expect Issues Without Internet${CL}"
     else

misc/build.func

@@ -3917,7 +3917,7 @@ run_addon_updates() {
     name="${a##*/update_}"
     printf 'Do you also want to update addon "%s"? (y/N) [60s]: ' "$name"
     ans=""
-    if read -r -t 60 ans; then :; else echo; fi
+    if read -r -t 60 ans </dev/tty; then :; else echo; fi
     case "${ans,,}" in
     y | yes)
       bash "$a" || msg_warn "Addon update for $name failed (rc=$?)"
@@ -5729,6 +5729,7 @@ EOF
       # read itself failed (e.g. broken/closed stdin, I/O error) rather than
       # timing out - don't guess and destroy the container on a read we
       # couldn't actually capture; keep it since that's the reversible choice.
+      while read -r -t 0.1 -n 1 _ </dev/tty 2>/dev/null; do :; done
       echo ""
       msg_error "Could not read your response (stdin error) - keeping container ${CTID} for safety."
       msg_error "Remove it manually if not needed: pct destroy ${CTID}"

misc/core.func

@@ -754,7 +754,7 @@ msg_info() {
     # Pause mode: Wait for Enter after each step
     if [[ "${DEV_MODE_PAUSE:-false}" == "true" ]]; then
       echo -en "\n${YWB}[PAUSE]${CL} Press Enter to continue..." >&2
-      read -r
+      read -r </dev/tty
     fi
     return
   fi
@@ -769,7 +769,7 @@ msg_info() {
   if [[ "${DEV_MODE_PAUSE:-false}" == "true" ]]; then
     stop_spinner
     echo -en "\n${YWB}[PAUSE]${CL} Press Enter to continue..." >&2
-    read -r
+    read -r </dev/tty
   fi
 }
 
@@ -1217,7 +1217,7 @@ prompt_confirm() {
   # Interactive prompt with timeout
   echo -en "${YW}${message} ${hint} (auto-${default} in ${timeout}s): ${CL}"
 
-  if read -t "$timeout" -r response; then
+  if read -t "$timeout" -r response </dev/tty; then
     # User provided input
     response="${response,,}" # lowercase
     case "$response" in
@@ -1310,7 +1310,7 @@ prompt_input() {
   # Interactive prompt with timeout
   echo -en "${YW}${message}${hint} (auto-default in ${timeout}s): ${CL}" >&2
 
-  if read -t "$timeout" -r response; then
+  if read -t "$timeout" -r response </dev/tty; then
     # User provided input (or pressed Enter for empty)
     if [[ -n "$response" ]]; then
       echo "$response"
@@ -1412,7 +1412,7 @@ prompt_input_required() {
 
     echo -en "${YW}${message} (required, timeout ${timeout}s): ${CL}" >&2
 
-    if read -t "$timeout" -r response; then
+    if read -t "$timeout" -r response </dev/tty; then
       if [[ -z "$response" ]]; then
         echo -e "${YW}This field is required. Please enter a value. (attempt ${attempts}/3)${CL}" >&2
       fi
@@ -1507,7 +1507,7 @@ prompt_select() {
   echo -en "${YW}Select [1-${num_options}] (auto-select ${default} in ${timeout}s): ${CL}" >&2
 
   local response
-  if read -t "$timeout" -r response; then
+  if read -t "$timeout" -r response </dev/tty; then
     if [[ -z "$response" ]]; then
       # Empty response, use default
       echo "${options[$((default - 1))]}"
@@ -1590,7 +1590,7 @@ prompt_password() {
   # Interactive prompt with timeout (silent input)
   echo -en "${YW}${message}${hint} (timeout ${timeout}s): ${CL}" >&2
 
-  if read -t "$timeout" -rs response; then
+  if read -t "$timeout" -rs response </dev/tty; then
     echo "" >&2 # Newline after hidden input
     if [[ -n "$response" ]]; then
       # Validate minimum length

misc/error_handler.func

@@ -499,7 +499,7 @@ error_handler() {
 
       local response=""
       local read_rc
-      read -t 60 -r response
+      read -t 60 -r response </dev/tty
       read_rc=$?
       if [[ $read_rc -eq 0 ]]; then
         if [[ -z "$response" || "$response" =~ ^[Yy]$ ]]; then
@@ -543,6 +543,7 @@ error_handler() {
         # read itself failed (e.g. broken/closed stdin, I/O error) rather than
         # timing out - don't guess and destroy the container on a read we
         # couldn't actually capture; keep it since that's the reversible choice.
+        while read -r -t 0.1 -n 1 _ </dev/tty 2>/dev/null; do :; done
         echo ""
         if declare -f msg_error >/dev/null 2>&1; then
           msg_error "Could not read your response (stdin error) - keeping container ${CTID} for safety."

misc/install.func

@@ -201,7 +201,7 @@ network_check() {
 
   # If both IPv4 and IPv6 checks fail, prompt the user
   if [[ $ipv4_connected == false && $ipv6_connected == false ]]; then
-    read -r -p "No Internet detected, would you like to continue anyway? <y/N> " prompt
+    read -r -p "No Internet detected, would you like to continue anyway? <y/N> " prompt </dev/tty
     if [[ "${prompt,,}" =~ ^(y|yes)$ ]]; then
       echo -e "${INFO}${RD}Expect Issues Without Internet${CL}"
     else

misc/tools.func

@@ -1466,7 +1466,7 @@ prompt_for_github_token() {
   fi
 
   local reply
-  read -rp "${TAB}Would you like to enter a GitHub Personal Access Token (PAT)? [y/N]: " reply
+  read -rp "${TAB}Would you like to enter a GitHub Personal Access Token (PAT)? [y/N]: " reply </dev/tty
   reply="${reply:-n}"
 
   if [[ ! "${reply,,}" =~ ^(y|yes)$ ]]; then
@@ -1475,7 +1475,7 @@ prompt_for_github_token() {
 
   local token
   while true; do
-    read -rp "${TAB}Enter your GitHub PAT: " token
+    read -rp "${TAB}Enter your GitHub PAT: " token </dev/tty
     # Trim leading/trailing whitespace
     token="$(echo "$token" | xargs)"
     if [[ -z "$token" ]]; then
@@ -3973,7 +3973,7 @@ _gh_scan_older_releases() {
       local use_fallback="y"
       if [[ -t 0 ]]; then
         msg_warn "Release ${skip_tag} has no matching asset. Previous release ${rel_tag} has a compatible asset."
-        read -rp "Use version ${rel_tag} instead? [Y/n] (auto-yes in 60s): " -t 60 use_fallback || use_fallback="y"
+        read -rp "Use version ${rel_tag} instead? [Y/n] (auto-yes in 60s): " -t 60 use_fallback </dev/tty || use_fallback="y"
         use_fallback="${use_fallback:-y}"
       fi
 
@@ -4796,7 +4796,7 @@ EOF
       for entry in "${compose_updates[@]}"; do
         IFS='|' read -r name image compose_workdir compose_service <<<"$entry"
         reply=""
-        if read -r -t 60 -p "${TAB3}Update ${name} (${image}) via Compose? <y/N> (auto-no in 60s): " reply; then
+        if read -r -t 60 -p "${TAB3}Update ${name} (${image}) via Compose? <y/N> (auto-no in 60s): " reply </dev/tty; then
           echo ""
         else
           echo ""
@@ -4814,7 +4814,7 @@ EOF
       for entry in "${standalone_updates[@]}"; do
         IFS='|' read -r name image <<<"$entry"
         reply=""
-        if read -r -t 60 -p "${TAB3}Pull new image for ${name} (${image})? <y/N> (auto-no in 60s): " reply; then
+        if read -r -t 60 -p "${TAB3}Pull new image for ${name} (${image})? <y/N> (auto-no in 60s): " reply </dev/tty; then
           echo ""
         else
           echo ""
@@ -5409,7 +5409,7 @@ setup_hwaccel() {
     # Read with 60 second timeout
     local selection=""
     echo -n "Select GPU(s) to configure (1-${gpu_count}, A=all) [timeout 60s, default=all]: "
-    if read -r -t 60 selection; then
+    if read -r -t 60 selection </dev/tty; then
       selection="${selection^^}" # uppercase
     else
       echo ""
@@ -5457,7 +5457,7 @@ setup_hwaccel() {
       echo ""
       msg_custom "🎮" "${GN}" "NVIDIA GPU passthrough detected"
       local nvidia_reply=""
-      read -r -t 60 -p "${TAB3}⚙️ Install NVIDIA driver libraries in the container? [Y/n] (auto-yes in 60s): " nvidia_reply || nvidia_reply=""
+      read -r -t 60 -p "${TAB3}⚙️ Install NVIDIA driver libraries in the container? [Y/n] (auto-yes in 60s): " nvidia_reply </dev/tty || nvidia_reply=""
       case "${nvidia_reply,,}" in
       n | no) install_nvidia_drivers="no" ;;
       *) install_nvidia_drivers="yes" ;;
@@ -9755,7 +9755,7 @@ _gl_scan_older_releases() {
       local use_fallback="y"
       if [[ -t 0 ]]; then
         msg_warn "Release ${skip_tag} has no matching asset. Previous release ${rel_tag} has a compatible asset."
-        read -rp "Use version ${rel_tag} instead? [Y/n] (auto-yes in 60s): " -t 60 use_fallback || use_fallback="y"
+        read -rp "Use version ${rel_tag} instead? [Y/n] (auto-yes in 60s): " -t 60 use_fallback </dev/tty || use_fallback="y"
         use_fallback="${use_fallback:-y}"
       fi