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/cachedtable/CMakeLists.txt

@@ -0,0 +1,40 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+cmake_minimum_required(VERSION 3.16)
+project(cachedtable LANGUAGES CXX)
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui Sql Widgets)
+
+qt_standard_project_setup()
+
+qt_add_executable(cachedtable
+    ../connection.h
+    main.cpp
+    tableeditor.cpp tableeditor.h
+)
+
+set_target_properties(cachedtable PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(cachedtable PRIVATE
+    Qt6::Core
+    Qt6::Gui
+    Qt6::Sql
+    Qt6::Widgets
+)
+
+install(TARGETS cachedtable
+    BUNDLE  DESTINATION .
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+)
+
+qt_generate_deploy_app_script(
+    TARGET cachedtable
+    OUTPUT_SCRIPT deploy_script
+    NO_UNSUPPORTED_PLATFORM_ERROR
+)
+install(SCRIPT ${deploy_script})

local/recipes/qt/qtbase/source/examples/sql/cachedtable/cachedtable.pro

@@ -0,0 +1,11 @@
+HEADERS       = ../connection.h \
+                tableeditor.h
+SOURCES       = main.cpp \
+                tableeditor.cpp
+QT           += sql widgets
+requires(qtConfig(tableview))
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/sql/cachedtable
+INSTALLS += target
+

local/recipes/qt/qtbase/source/examples/sql/cachedtable/main.cpp

@@ -0,0 +1,20 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QApplication>
+
+#include "../connection.h"
+#include "tableeditor.h"
+
+//! [0]
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    if (!createConnection())
+        return 1;
+
+    TableEditor editor("person");
+    editor.show();
+    return app.exec();
+}
+//! [0]

local/recipes/qt/qtbase/source/examples/sql/cachedtable/tableeditor.cpp

@@ -0,0 +1,74 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "tableeditor.h"
+
+#include <QDialogButtonBox>
+#include <QHBoxLayout>
+#include <QMessageBox>
+#include <QPushButton>
+#include <QSqlError>
+#include <QSqlTableModel>
+#include <QTableView>
+
+//! [0]
+TableEditor::TableEditor(const QString &tableName, QWidget *parent)
+    : QWidget(parent)
+{
+    model = new QSqlTableModel(this);
+    model->setTable(tableName);
+    model->setEditStrategy(QSqlTableModel::OnManualSubmit);
+    model->select();
+
+    model->setHeaderData(0, Qt::Horizontal, tr("ID"));
+    model->setHeaderData(1, Qt::Horizontal, tr("First name"));
+    model->setHeaderData(2, Qt::Horizontal, tr("Last name"));
+
+//! [0] //! [1]
+    QTableView *view = new QTableView;
+    view->setModel(model);
+    view->resizeColumnsToContents();
+//! [1]
+
+//! [2]
+    submitButton = new QPushButton(tr("Submit"));
+    submitButton->setDefault(true);
+    revertButton = new QPushButton(tr("&Revert"));
+    quitButton = new QPushButton(tr("Quit"));
+
+    buttonBox = new QDialogButtonBox(Qt::Vertical);
+    buttonBox->addButton(submitButton, QDialogButtonBox::ActionRole);
+    buttonBox->addButton(revertButton, QDialogButtonBox::ActionRole);
+    buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
+//! [2]
+
+//! [3]
+    connect(submitButton, &QPushButton::clicked, this, &TableEditor::submit);
+    connect(revertButton, &QPushButton::clicked,  model, &QSqlTableModel::revertAll);
+    connect(quitButton, &QPushButton::clicked, this, &TableEditor::close);
+//! [3]
+
+//! [4]
+    QHBoxLayout *mainLayout = new QHBoxLayout;
+    mainLayout->addWidget(view);
+    mainLayout->addWidget(buttonBox);
+    setLayout(mainLayout);
+
+    setWindowTitle(tr("Cached Table"));
+}
+//! [4]
+
+//! [5]
+void TableEditor::submit()
+{
+    model->database().transaction();
+    if (model->submitAll()) {
+        model->database().commit();
+    } else {
+        model->database().rollback();
+        QMessageBox::warning(this, tr("Cached Table"),
+                             tr("The database reported an error: %1")
+                             .arg(model->lastError().text()));
+    }
+}
+//! [5]

local/recipes/qt/qtbase/source/examples/sql/cachedtable/tableeditor.h

@@ -0,0 +1,33 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef TABLEEDITOR_H
+#define TABLEEDITOR_H
+
+#include <QDialog>
+
+QT_FORWARD_DECLARE_CLASS(QDialogButtonBox)
+QT_FORWARD_DECLARE_CLASS(QPushButton)
+QT_FORWARD_DECLARE_CLASS(QSqlTableModel)
+
+//! [0]
+class TableEditor : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit TableEditor(const QString &tableName, QWidget *parent = nullptr);
+
+private slots:
+    void submit();
+
+private:
+    QPushButton *submitButton;
+    QPushButton *revertButton;
+    QPushButton *quitButton;
+    QDialogButtonBox *buttonBox;
+    QSqlTableModel *model;
+};
+//! [0]
+
+#endif