fix: comprehensive boot warnings and exceptions — fixable silenced, unfixable diagnosed

Build system (5 gaps hardened):
- COOKBOOK_OFFLINE defaults to true (fork-mode)
- normalize_patch handles diff -ruN format
- New 'repo validate-patches' command (25/25 relibc patches)
- 14 patched Qt/Wayland/display recipes added to protected list
- relibc archive regenerated with current patch chain

Boot fixes (fixable):
- Full ISO EFI partition: 16 MiB → 1 MiB (matches mini, BIOS hardcoded 2 MiB offset)
- D-Bus system bus: absolute /usr/bin/dbus-daemon path (was skipped)
- redbear-sessiond: absolute /usr/bin/redbear-sessiond path (was skipped)
- daemon framework: silenced spurious INIT_NOTIFY warnings for oneshot_async services (P0-daemon-silence-init-notify.patch)
- udev-shim: demoted INIT_NOTIFY warning to INFO (expected for oneshot_async)
- relibc: comprehensive named semaphores (sem_open/close/unlink) replacing upstream todo!() stubs
- greeterd: Wayland socket timeout 15s → 30s (compositor DRM wait)
- greeter-ui: built and linked (header guard unification, sem_compat stubs removed)
- mc: un-ignored in both configs, fixed glib/libiconv/pcre2 transitive deps
- greeter config: removed stale keymapd dependency from display/greeter services
- prefix toolchain: relibc headers synced, _RELIBC_STDLIB_H guard unified

Unfixable (diagnosed, upstream):
- i2c-hidd: abort on no-I2C-hardware (QEMU) — process::exit → relibc abort
- kded6/greeter-ui: page fault 0x8 — Qt library null deref
- Thread panics fd != -1 — Rust std library on Redox
- DHCP timeout / eth0 MAC — QEMU user-mode networking
- hwrngd/thermald — no hardware RNG/thermal in VM
- live preload allocation — BIOS memory fragmentation, continues on demand

local/recipes/qt/qtbase/source/examples/widgets/touch/knobs/CMakeLists.txt

@@ -0,0 +1,38 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+cmake_minimum_required(VERSION 3.16)
+project(knobs LANGUAGES CXX)
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)
+
+qt_standard_project_setup()
+
+qt_add_executable(knobs
+    knob.cpp knob.h
+    main.cpp
+)
+
+set_target_properties(knobs PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(knobs PRIVATE
+    Qt6::Core
+    Qt6::Gui
+    Qt6::Widgets
+)
+
+install(TARGETS knobs
+    BUNDLE  DESTINATION .
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+)
+
+qt_generate_deploy_app_script(
+    TARGET knobs
+    OUTPUT_SCRIPT deploy_script
+    NO_UNSUPPORTED_PLATFORM_ERROR
+)
+install(SCRIPT ${deploy_script})

local/recipes/qt/qtbase/source/examples/widgets/touch/knobs/doc/src/touch-knobs.qdoc

@@ -0,0 +1,16 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
+
+/*!
+    \example touch/knobs
+    \title Touch Knobs Example
+    \examplecategory {User Interface Components}
+    \ingroup touchinputexamples
+    \ingroup examples-user-input
+    \brief Shows how to create custom controls that accept touch input.
+
+    The Touch Knobs example shows how to create custom controls that
+    accept touch input.
+
+    \image touch-knobs-example.png {Two knobs that respond to touch input}
+*/

local/recipes/qt/qtbase/source/examples/widgets/touch/knobs/knob.cpp

@@ -0,0 +1,51 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "knob.h"
+
+#include <QBrush>
+#include <QTouchEvent>
+
+Knob::Knob()
+    : QGraphicsEllipseItem(-50, -50, 100, 100)
+{
+    setAcceptTouchEvents(true);
+    setBrush(Qt::lightGray);
+
+    QGraphicsEllipseItem *leftItem = new QGraphicsEllipseItem(0, 0, 20, 20, this);
+    leftItem->setPos(-40, -10);
+    leftItem->setBrush(Qt::darkGreen);
+
+    QGraphicsEllipseItem *rightItem = new QGraphicsEllipseItem(0, 0, 20, 20, this);
+    rightItem->setPos(20, -10);
+    rightItem->setBrush(Qt::darkRed);
+}
+
+bool Knob::sceneEvent(QEvent *event)
+{
+    switch (event->type()) {
+    case QEvent::TouchBegin:
+    case QEvent::TouchUpdate:
+    case QEvent::TouchEnd:
+    {
+        QTouchEvent *touchEvent = static_cast<QTouchEvent *>(event);
+
+        if (touchEvent->points().count() == 2) {
+            const QEventPoint &touchPoint1 = touchEvent->points().first();
+            const QEventPoint &touchPoint2 = touchEvent->points().last();
+
+            QLineF line1(touchPoint1.sceneLastPosition(), touchPoint2.sceneLastPosition());
+            QLineF line2(touchPoint1.scenePosition(), touchPoint2.scenePosition());
+
+            setTransform(QTransform().rotate(line2.angleTo(line1)), true);
+        }
+
+        break;
+    }
+
+    default:
+        return QGraphicsItem::sceneEvent(event);
+    }
+
+    return true;
+}

local/recipes/qt/qtbase/source/examples/widgets/touch/knobs/knob.h

@@ -0,0 +1,17 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef KNOB_H
+#define KNOB_H
+
+#include <QGraphicsItem>
+
+class Knob : public QGraphicsEllipseItem
+{
+public:
+    Knob();
+
+    bool sceneEvent(QEvent *event) override;
+};
+
+#endif // KNOB_H

local/recipes/qt/qtbase/source/examples/widgets/touch/knobs/knobs.pro

@@ -0,0 +1,8 @@
+QT += widgets
+
+HEADERS = knob.h
+SOURCES = main.cpp knob.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/widgets/touch/knobs
+INSTALLS += target

local/recipes/qt/qtbase/source/examples/widgets/touch/knobs/main.cpp

@@ -0,0 +1,28 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QApplication>
+#include <QGraphicsView>
+
+#include "knob.h"
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    QGraphicsScene scene;
+    QGraphicsView view(&scene);
+    view.setRenderHints(QPainter::Antialiasing);
+
+    Knob *knob1 = new Knob;
+    knob1->setPos(-110, 0);
+    Knob *knob2 = new Knob;
+
+    scene.addItem(knob1);
+    scene.addItem(knob2);
+
+    view.showMaximized();
+    view.fitInView(scene.sceneRect().adjusted(-20, -20, 20, 20), Qt::KeepAspectRatio);
+
+    return app.exec();
+}