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/qtdeclarative/source/src/quicktemplates/qquicktumbler_p.h

@@ -0,0 +1,150 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+// Qt-Security score:significant reason:default
+
+#ifndef QQUICKTUMBLER_P_H
+#define QQUICKTUMBLER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qvariant.h>
+#include <QtQml/qqmlcomponent.h>
+#include <QtQuickTemplates2/private/qquickcontrol_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QQuickTumblerAttached;
+class QQuickTumblerPrivate;
+
+class Q_QUICKTEMPLATES2_EXPORT QQuickTumbler : public QQuickControl
+{
+    Q_OBJECT
+    Q_PROPERTY(QVariant model READ model WRITE setModel NOTIFY modelChanged FINAL)
+    Q_PROPERTY(int count READ count NOTIFY countChanged FINAL)
+    Q_PROPERTY(int currentIndex READ currentIndex WRITE setCurrentIndex NOTIFY currentIndexChanged FINAL)
+    Q_PROPERTY(QQuickItem *currentItem READ currentItem NOTIFY currentItemChanged FINAL)
+    Q_PROPERTY(QQmlComponent *delegate READ delegate WRITE setDelegate NOTIFY delegateChanged FINAL)
+    Q_PROPERTY(int visibleItemCount READ visibleItemCount WRITE setVisibleItemCount NOTIFY visibleItemCountChanged FINAL)
+    // 2.1 (Qt 5.8)
+    Q_PROPERTY(bool wrap READ wrap WRITE setWrap RESET resetWrap NOTIFY wrapChanged FINAL REVISION(2, 1))
+    // 2.2 (Qt 5.9)
+    Q_PROPERTY(bool moving READ isMoving NOTIFY movingChanged FINAL REVISION(2, 2))
+    Q_PROPERTY(qreal flickDeceleration READ flickDeceleration WRITE setFlickDeceleration RESET resetFlickDeceleration NOTIFY flickDecelerationChanged FINAL REVISION(6, 9))
+    QML_NAMED_ELEMENT(Tumbler)
+    QML_ATTACHED(QQuickTumblerAttached)
+    QML_ADDED_IN_VERSION(2, 0)
+
+public:
+    explicit QQuickTumbler(QQuickItem *parent = nullptr);
+    ~QQuickTumbler();
+
+    QVariant model() const;
+    void setModel(const QVariant &model);
+
+    int count() const;
+
+    int currentIndex() const;
+    void setCurrentIndex(int currentIndex);
+    QQuickItem *currentItem() const;
+
+    QQmlComponent *delegate() const;
+    void setDelegate(QQmlComponent *delegate);
+
+    int visibleItemCount() const;
+    void setVisibleItemCount(int visibleItemCount);
+
+    static QQuickTumblerAttached *qmlAttachedProperties(QObject *object);
+
+    // 2.1 (Qt 5.8)
+    bool wrap() const;
+    void setWrap(bool wrap);
+    void resetWrap();
+
+    // 2.2 (Qt 5.9)
+    bool isMoving() const;
+
+    enum PositionMode {
+        Beginning,
+        Center,
+        End,
+        Visible, // ListView-only
+        Contain,
+        SnapPosition
+    };
+    Q_ENUM(PositionMode)
+
+    // 2.5 (Qt 5.12)
+    Q_REVISION(2, 5) Q_INVOKABLE void positionViewAtIndex(int index, PositionMode mode);
+
+    qreal flickDeceleration() const;
+    void setFlickDeceleration(qreal newFlickDeceleration);
+    void resetFlickDeceleration();
+
+Q_SIGNALS:
+    void modelChanged();
+    void countChanged();
+    void currentIndexChanged();
+    void currentItemChanged();
+    void delegateChanged();
+    void visibleItemCountChanged();
+    // 2.1 (Qt 5.8)
+    Q_REVISION(2, 1) void wrapChanged();
+    // 2.2 (Qt 5.9)
+    Q_REVISION(2, 2) void movingChanged();
+    Q_REVISION(6, 9) void flickDecelerationChanged();
+
+protected:
+    void geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry) override;
+    void componentComplete() override;
+    void contentItemChange(QQuickItem *newItem, QQuickItem *oldItem) override;
+    void keyPressEvent(QKeyEvent *event) override;
+    void updatePolish() override;
+
+    QFont defaultFont() const override;
+
+private:
+    Q_DISABLE_COPY(QQuickTumbler)
+    Q_DECLARE_PRIVATE(QQuickTumbler)
+
+    Q_PRIVATE_SLOT(d_func(), void _q_updateItemWidths())
+    Q_PRIVATE_SLOT(d_func(), void _q_updateItemHeights())
+    Q_PRIVATE_SLOT(d_func(), void _q_onViewCurrentIndexChanged())
+    Q_PRIVATE_SLOT(d_func(), void _q_onViewCountChanged())
+    Q_PRIVATE_SLOT(d_func(), void _q_onViewOffsetChanged())
+    Q_PRIVATE_SLOT(d_func(), void _q_onViewContentYChanged())
+};
+
+class QQuickTumblerAttachedPrivate;
+
+class Q_QUICKTEMPLATES2_EXPORT QQuickTumblerAttached : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(QQuickTumbler *tumbler READ tumbler CONSTANT FINAL)
+    Q_PROPERTY(qreal displacement READ displacement NOTIFY displacementChanged FINAL)
+
+public:
+    explicit QQuickTumblerAttached(QObject *parent = nullptr);
+
+    QQuickTumbler *tumbler() const;
+    qreal displacement() const;
+
+Q_SIGNALS:
+    void displacementChanged();
+
+private:
+    Q_DISABLE_COPY(QQuickTumblerAttached)
+    Q_DECLARE_PRIVATE(QQuickTumblerAttached)
+};
+
+QT_END_NAMESPACE
+
+#endif // QQUICKTUMBLER_P_H