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/sql/drilldown/view.cpp

@@ -0,0 +1,135 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "informationwindow.h"
+#include "imageitem.h"
+#include "view.h"
+
+//! [0]
+View::View(const QString &items, const QString &images, QWidget *parent)
+    : QGraphicsView(parent)
+{
+    itemTable = new QSqlRelationalTableModel(this);
+    itemTable->setTable(items);
+    itemTable->setRelation(1, QSqlRelation(images, "itemid", "file"));
+    itemTable->select();
+//! [0]
+
+//! [1]
+    scene = new QGraphicsScene(this);
+    scene->setSceneRect(0, 0, 465, 365);
+    setScene(scene);
+
+    addItems();
+
+    setMinimumSize(470, 370);
+    setMaximumSize(470, 370);
+
+    QLinearGradient gradient(QPointF(0, 0), QPointF(0, 370));
+    gradient.setColorAt(0, QColor("#868482"));
+    gradient.setColorAt(1, QColor("#5d5b59"));
+    setBackgroundBrush(gradient);
+}
+//! [1]
+
+//! [3]
+void View::addItems()
+{
+    int itemCount = itemTable->rowCount();
+
+    int imageOffset = 150;
+    int leftMargin = 70;
+    int topMargin = 40;
+
+    for (int i = 0; i < itemCount; i++) {
+        QSqlRecord record = itemTable->record(i);
+
+        int id = record.value("id").toInt();
+        QString file = record.value("file").toString();
+        QString item = record.value("itemtype").toString();
+
+        int columnOffset = ((i % 2) * 37);
+        int x = ((i % 2) * imageOffset) + leftMargin + columnOffset;
+        int y = ((i / 2) * imageOffset) + topMargin;
+
+        ImageItem *image = new ImageItem(id, QPixmap(":/" + file));
+        image->setData(0, i);
+        image->setPos(x, y);
+        scene->addItem(image);
+
+        QGraphicsTextItem *label = scene->addText(item);
+        label->setDefaultTextColor(QColor("#d7d6d5"));
+        QPointF labelOffset((120 - label->boundingRect().width()) / 2, 120.0);
+        label->setPos(QPointF(x, y) + labelOffset);
+    }
+}
+//! [3]
+
+//! [5]
+void View::mouseReleaseEvent(QMouseEvent *event)
+{
+    if (QGraphicsItem *item = itemAt(event->position().toPoint())) {
+        if (ImageItem *image = qgraphicsitem_cast<ImageItem *>(item))
+            showInformation(image);
+    }
+    QGraphicsView::mouseReleaseEvent(event);
+}
+//! [5]
+
+//! [6]
+void View::showInformation(ImageItem *image)
+{
+    int id = image->id();
+    if (id < 0 || id >= itemTable->rowCount())
+        return;
+
+    InformationWindow *window = findWindow(id);
+    if (!window) {
+        window = new InformationWindow(id, itemTable, this);
+
+        connect(window, &InformationWindow::imageChanged,
+                this, &View::updateImage);
+
+        window->move(pos() + QPoint(20, 40));
+        window->show();
+        informationWindows.append(window);
+    }
+
+    if (window->isVisible()) {
+        window->raise();
+        window->activateWindow();
+    } else
+        window->show();
+}
+//! [6]
+
+//! [7]
+void View::updateImage(int id, const QString &fileName)
+{
+    QList<QGraphicsItem *> items = scene->items();
+
+    while(!items.empty()) {
+        QGraphicsItem *item = items.takeFirst();
+
+        if (ImageItem *image = qgraphicsitem_cast<ImageItem *>(item)) {
+            if (image->id() == id){
+                image->setPixmap(QPixmap(":/" +fileName));
+                image->adjust();
+                break;
+            }
+        }
+    }
+}
+//! [7]
+
+//! [8]
+InformationWindow *View::findWindow(int id) const
+{
+    for (auto window : informationWindows) {
+        if (window && (window->id() == id))
+            return window;
+    }
+    return nullptr;
+}
+//! [8]
+