fix(installer): fix tui-install on bare console + add network check to archiso installers

tui-install.sh: dialog height=40 apps checklist and height=24 confirm
dialog both exceeded the standard 24-row VT console, causing dialog to
exit with code 1 and silently skip all apps. Make both heights
terminal-adaptive via tput lines/cols. Also extend the EXIT trap to
reset the terminal so Ctrl-C during a dialog doesn't leave the console
in raw/no-echo mode.

arch-autoinstall.sh, archbaseos-guided-install.sh: add a ping 1.1.1.1
check early in both scripts. In interactive mode, launches nmtui if
offline, then re-checks; prompts to abort if still down. Answerfile
mode logs a warning and continues.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

setup/arch-autoinstall.sh

@@ -99,6 +99,23 @@ if $AF_MODE; then
     command -v jq &>/dev/null || pacman -Sy --noconfirm jq
 fi
 
+############################################
+# NETWORK CHECK
+############################################
+if ! ping -c1 -W3 1.1.1.1 &>/dev/null; then
+    if $AF_MODE; then
+        echo "Warning: no internet connection detected — continuing in answerfile mode."
+    else
+        echo "No internet connection detected. Launching nmtui..."
+        nmtui
+        if ! ping -c1 -W3 1.1.1.1 &>/dev/null; then
+            echo "Warning: still offline. Packages cannot be downloaded without network."
+            read -rp "Continue anyway? [y/N]: " _net_ans
+            [[ "${_net_ans,,}" == "y" ]] || { echo "Aborted — no network."; exit 1; }
+        fi
+    fi
+fi
+
 ############################################
 # KEYMAP
 # To add more layouts: append "code|Display Name" to KEYMAPS

setup/archbaseos-guided-install.sh

@@ -118,6 +118,23 @@ else
     echo "== Arch Linux FIDO2-Ready Installer =="
 fi
 
+############################################
+# NETWORK CHECK
+############################################
+if ! ping -c1 -W3 1.1.1.1 &>/dev/null; then
+    if $AF_MODE; then
+        echo "Warning: no internet connection detected — continuing in answerfile mode."
+    else
+        echo "No internet connection detected. Launching nmtui..."
+        nmtui
+        if ! ping -c1 -W3 1.1.1.1 &>/dev/null; then
+            echo "Warning: still offline. Packages cannot be downloaded without network."
+            read -rp "Continue anyway? [y/N]: " _net_ans
+            [[ "${_net_ans,,}" == "y" ]] || { echo "Aborted — no network."; exit 1; }
+        fi
+    fi
+fi
+
 ############################################
 # Begin
 ############################################

setup/tui-install.sh

@@ -10,7 +10,7 @@ MODULES="$DOTFILES_DIR/setup/modules"
 APPS="$MODULES/optional-Modules/apps"
 LOG="$HOME/dotfiles-install.log"
 TMP_D="$(mktemp -d)"
-trap 'rm -rf "$TMP_D"' EXIT
+trap 'rm -rf "$TMP_D"; tput reset 2>/dev/null || stty sane 2>/dev/null || true' EXIT INT TERM HUP
 
 ANSWERFILE="${ANSWERFILE:-/answerfile.json}"
 ANSWERFILE_MODE=false
@@ -18,6 +18,10 @@ ANSWERFILE_MODE=false
 
 BACKTITLE="the_miro's Arch Dotfiles"
 
+# ── Terminal dimensions (bare console safe) ───────────────────────────────────
+TERM_H=$(tput lines 2>/dev/null || echo 24)
+TERM_W=$(tput cols  2>/dev/null || echo 80)
+
 # ── Cyberqueer dialog theme ───────────────────────────────────────────────────
 export DIALOGRC="$TMP_D/dialogrc"
 cat > "$DIALOGRC" <<'EOF'
@@ -302,9 +306,11 @@ fi
 if $ANSWERFILE_MODE; then
     SELECTED_APPS="$AF_APPS"
 else
+    _APP_H=$(( TERM_H - 2 < 40 ? TERM_H - 2 : 40 ))
+    _APP_LIST_H=$(( _APP_H - 8 < 4 ? 4 : _APP_H - 8 ))
     SELECTED_APPS=$(dialog --backtitle "$BACKTITLE" \
         --title " Applications " \
-        --checklist "Optional applications — installed after base components:" 40 76 32 \
+        --checklist "Optional applications — installed after base components:" "$_APP_H" 76 "$_APP_LIST_H" \
         "ollama"          "Ollama            local LLM runner + API server"          off \
         "llama-cpp"       "llama.cpp         standalone inference CLI + server"      off \
         "open-webui"      "Open WebUI        browser UI for Ollama / LLM backends"  off \
@@ -435,10 +441,11 @@ if ! $ANSWERFILE_MODE; then
         [[ "$SELECTED_APPS" == *"qemu"*             ]] && SUMMARY+="  ✦ QEMU/KVM + virt-manager\n"
     fi
 
+    _CONF_H=$(( TERM_H - 2 < 24 ? TERM_H - 2 : 24 ))
     dialog --backtitle "$BACKTITLE" \
         --title " Confirm Installation " \
         --yesno "\n Components to install:\n\n${SUMMARY}\n Log: $LOG\n\n Proceed?" \
-        24 62 || { clear; echo "Aborted."; exit 0; }
+        "$_CONF_H" 62 || { clear; echo "Aborted."; exit 0; }
 fi
 
 count_steps "$COMPONENTS" "$DE" "$SELECTED_APPS"