fix: redirect stdin from /dev/tty for curl|sh installs

When running via `curl URL | sh`, stdin is the curl pipe, not the
terminal. Interactive prompts (wizard or legacy install.sh) need
a real TTY. Redirect stdin from /dev/tty when available, fall back
to --non-interactive mode when no TTY exists (CI/Docker).

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

remote-install.sh

@@ -44,15 +44,20 @@ WIZARD_BIN="$WORK_DIR/bootstrap/dist/mosaic-wizard.mjs"
 if command -v node >/dev/null 2>&1 && [ -f "$WIZARD_BIN" ]; then
   NODE_MAJOR="$(node -e 'console.log(process.versions.node.split(".")[0])')"
   if [ "$NODE_MAJOR" -ge 18 ] 2>/dev/null; then
+    if [ -e /dev/tty ]; then
       echo "[mosaic] Running wizard installer (Node.js $NODE_MAJOR detected)..."
-    node "$WIZARD_BIN" --source-dir "$WORK_DIR/bootstrap"
+      node "$WIZARD_BIN" --source-dir "$WORK_DIR/bootstrap" </dev/tty
+    else
+      echo "[mosaic] Running wizard installer in non-interactive mode (no TTY)..."
+      node "$WIZARD_BIN" --source-dir "$WORK_DIR/bootstrap" --non-interactive
+    fi
     echo "[mosaic] Cleaning up temporary files..."
     exit 0
   fi
 fi
 
 echo "[mosaic] Running legacy install..."
-bash install.sh
+bash install.sh </dev/tty
 
 echo "[mosaic] Cleaning up temporary files..."
 # cleanup runs via trap