port startup-related changes from broken tree

Restores the boot/launch chain customizations on top of the freshly-reset
baseline. Driving-model and per-feature changes (dashcamd, telemetry, gpsd,
bench mode, manager wiring) are deliberately left out and will be ported
piecemeal.

Brought in:
- launch_openpilot.sh: kill stale instances, run on_start.sh, background
  vpn-monitor + nice-monitor, BENCH_MODE pass-through
- launch_chffrplus.sh: source build_preflight.sh, kill stale text-error UI
- build_only.sh, build_preflight.sh
- system/clearpilot/on_start.sh: SSH keys, ssh.service enable, git.hanson.xyz
  Host config, WiFi radio on, run provision.sh
- system/clearpilot/provision.sh + provision_wrapper.sh: connectivity wait,
  apt install (openvpn, curl, ccrypt, nodejs), Claude Code installer, git
  remote fix, fast-forward origin/clearpilot, /data/quick_boot
- system/clearpilot/vpn-monitor.sh + vpn.ovpn: OpenVPN tunnel auto-connect
- system/clearpilot/nice-monitor.sh: keep claude processes at nice 19
- system/clearpilot/dev: id_ed25519.{cpt,pub.cpt}, GithubSshKeys, encrypt.sh
  (DongleId-keyed instead of hardware-serial)
- system/clearpilot/tools/{decrypt,encrypt}: switch key source to DongleId
- system/clearpilot/startup_logo/{bg.jpg, generate_logo.sh, set_logo.sh}
- selfdrive/ui/qt/spinner{,.cc,.h}: new spinner with logo

Removed (baseline-only flow superseded by broken's on_start.sh+provision.sh):
- system/clearpilot/dev/on_start.sh
- system/clearpilot/dev/on_start_brian.sh.cpt
- system/clearpilot/dev/provision.sh

selfdrive/ui/qt/spinner.cc

@@ -15,48 +15,24 @@
 #include "selfdrive/ui/qt/qt_window.h"
 #include "selfdrive/ui/qt/util.h"
 
-TrackWidget::TrackWidget(QWidget *parent) : QWidget(parent) {
-  setAttribute(Qt::WA_OpaquePaintEvent);
-  setFixedSize(spinner_size);
-
-  // pre-compute all the track imgs. make this a gif instead?
-  QPixmap comma_img = loadPixmap("../assets/img_spinner_comma.png", spinner_size);
-  QPixmap track_img = loadPixmap("../assets/img_spinner_track.png", spinner_size);
-
-  QTransform transform(1, 0, 0, 1, width() / 2, height() / 2);
-  QPixmap pm(spinner_size);
-  QPainter p(&pm);
-  p.setRenderHint(QPainter::SmoothPixmapTransform);
-  for (int i = 0; i < track_imgs.size(); ++i) {
-    p.resetTransform();
-    p.fillRect(0, 0, spinner_size.width(), spinner_size.height(), Qt::black);
-    p.drawPixmap(0, 0, comma_img);
-    p.setTransform(transform.rotate(360 / spinner_fps));
-    p.drawPixmap(-width() / 2, -height() / 2, track_img);
-    track_imgs[i] = pm.copy();
-  }
-
-  m_anim.setDuration(1000);
-  m_anim.setStartValue(0);
-  m_anim.setEndValue(int(track_imgs.size() -1));
-  m_anim.setLoopCount(-1);
-  m_anim.start();
-  connect(&m_anim, SIGNAL(valueChanged(QVariant)), SLOT(update()));
-}
-
-void TrackWidget::paintEvent(QPaintEvent *event) {
-  QPainter painter(this);
-  painter.drawPixmap(0, 0, track_imgs[m_anim.currentValue().toInt()]);
-}
-
-// Spinner
+// CLEARPILOT: full-screen boot logo background with progress bar overlay
 
 Spinner::Spinner(QWidget *parent) : QWidget(parent) {
+  // Load boot logo as full-screen background, rotated 90° CCW
+  // (bg.jpg is pre-rotated 90° CW for the raw framebuffer)
+  QPixmap boot_logo("/usr/comma/bg.jpg");
+  if (!boot_logo.isNull()) {
+    QTransform rot;
+    rot.rotate(-90);
+    bg_img = boot_logo.transformed(rot);
+  }
+
   QGridLayout *main_layout = new QGridLayout(this);
   main_layout->setSpacing(0);
-  main_layout->setMargin(200);
+  main_layout->setMargin(0);
 
-  main_layout->addWidget(new TrackWidget(this), 0, 0, Qt::AlignHCenter | Qt::AlignVCenter);
+  // Spacer to push progress bar toward bottom
+  main_layout->setRowStretch(0, 1);
 
   text = new QLabel();
   text->setWordWrap(true);
@@ -69,7 +45,10 @@ Spinner::Spinner(QWidget *parent) : QWidget(parent) {
   progress_bar->setTextVisible(false);
   progress_bar->setVisible(false);
   progress_bar->setFixedHeight(20);
-  main_layout->addWidget(progress_bar, 1, 0, Qt::AlignHCenter);
+  main_layout->addWidget(progress_bar, 2, 0, Qt::AlignHCenter | Qt::AlignBottom);
+
+  // Bottom margin for progress bar
+  main_layout->setContentsMargins(0, 0, 0, 80);
 
   setStyleSheet(R"(
     Spinner {
@@ -88,7 +67,7 @@ Spinner::Spinner(QWidget *parent) : QWidget(parent) {
     }
     QProgressBar::chunk {
       border-radius: 10px;
-      background-color: rgba(23, 134, 68, 255);
+      background-color: white;
     }
   )");
 
@@ -96,6 +75,17 @@ Spinner::Spinner(QWidget *parent) : QWidget(parent) {
   QObject::connect(notifier, &QSocketNotifier::activated, this, &Spinner::update);
 }
 
+void Spinner::paintEvent(QPaintEvent *event) {
+  QPainter p(this);
+  p.fillRect(rect(), Qt::black);
+  if (!bg_img.isNull()) {
+    QPixmap scaled = bg_img.scaled(size(), Qt::KeepAspectRatio, Qt::SmoothTransformation);
+    int x = (width() - scaled.width()) / 2;
+    int y = (height() - scaled.height()) / 2;
+    p.drawPixmap(x, y, scaled);
+  }
+}
+
 void Spinner::update(int n) {
   std::string line;
   std::getline(std::cin, line);