V2.0.0 — Refonte interface complete

- Nouveau layout : menus en haut, vignettes a gauche, viewer au centre
- Panneau vignettes redimensionnable (splitter)
  - Miniatures de chaque page
  - Drag & drop pour reordonner
  - Clic droit : supprimer page, inserer page blanche
  - Clic = naviguer vers la page
- Viewer PDF ameliore :
  - Ajustement auto a l'ouverture
  - Roulette = defiler les pages
  - Ctrl+roulette = zoom
- Drag & drop de fichier PDF sur la fenetre
- Barre de progression pendant les traitements
- Fusion de PDF (Fichier > Fusionner)
- Enlever les fonds perdus (Annotations > Enlever)
- Menus par categorie : Imposition, Pages, Annotations
- Toolbar : Ouvrir, Enregistrer, Zoom, info page
- Style sombre coherent CopyDev
- Suppression du numero de telephone dans A propos

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/page_panel.py

@@ -0,0 +1,109 @@
+"""Panneau lateral de vignettes des pages — V2."""
+
+from PyQt6.QtWidgets import (QWidget, QVBoxLayout, QListWidget, QListWidgetItem,
+                              QAbstractItemView, QMenu, QSizePolicy)
+from PyQt6.QtGui import QIcon, QPixmap
+from PyQt6.QtCore import Qt, pyqtSignal, QSize
+
+
+class PagePanel(QWidget):
+    """Panneau de vignettes avec drag & drop, suppression, insertion."""
+
+    page_selected = pyqtSignal(int)        # page index cliquee
+    pages_reordered = pyqtSignal(list)      # nouvelle liste d'indices
+    page_delete_requested = pyqtSignal(int) # demande suppression
+    page_insert_requested = pyqtSignal(int) # demande insertion page blanche apres
+
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.setMinimumWidth(100)
+        self.setSizePolicy(QSizePolicy.Policy.Preferred, QSizePolicy.Policy.Expanding)
+        self._setup_ui()
+
+    def _setup_ui(self):
+        layout = QVBoxLayout(self)
+        layout.setContentsMargins(0, 0, 0, 0)
+
+        self._list = QListWidget()
+        self._list.setIconSize(QSize(120, 170))
+        self._list.setSpacing(4)
+        self._list.setStyleSheet("""
+            QListWidget {
+                background: #252525;
+                border: none;
+                padding: 4px;
+            }
+            QListWidget::item {
+                background: #333;
+                border: 1px solid #444;
+                border-radius: 4px;
+                padding: 4px;
+                color: #ccc;
+                font-size: 10px;
+            }
+            QListWidget::item:selected {
+                background: #0066cc;
+                border: 1px solid #0088ff;
+                color: white;
+            }
+        """)
+
+        self._list.setDragDropMode(QAbstractItemView.DragDropMode.InternalMove)
+        self._list.setDefaultDropAction(Qt.DropAction.MoveAction)
+        self._list.setContextMenuPolicy(Qt.ContextMenuPolicy.CustomContextMenu)
+        self._list.customContextMenuRequested.connect(self._context_menu)
+        self._list.currentRowChanged.connect(self._on_row_changed)
+        self._list.model().rowsMoved.connect(self._on_rows_moved)
+
+        layout.addWidget(self._list)
+
+    def load_thumbnails(self, viewer):
+        """Charger les miniatures depuis le viewer."""
+        self._list.clear()
+        for i in range(viewer.total_pages):
+            thumb = viewer.get_page_thumbnail(i, 120)
+            item = QListWidgetItem()
+            item.setText(f"  Page {i + 1}")
+            item.setData(Qt.ItemDataRole.UserRole, i)
+            if thumb:
+                item.setIcon(QIcon(thumb))
+            self._list.addItem(item)
+
+    def select_page(self, index):
+        """Selectionner une page sans emettre le signal."""
+        self._list.blockSignals(True)
+        self._list.setCurrentRow(index)
+        self._list.blockSignals(False)
+
+    def _on_row_changed(self, row):
+        if row >= 0:
+            self.page_selected.emit(row)
+
+    def _on_rows_moved(self):
+        indices = []
+        for i in range(self._list.count()):
+            item = self._list.item(i)
+            original_index = item.data(Qt.ItemDataRole.UserRole)
+            indices.append(original_index)
+        self.pages_reordered.emit(indices)
+
+    def _context_menu(self, pos):
+        item = self._list.itemAt(pos)
+        if not item:
+            return
+        row = self._list.row(item)
+
+        menu = QMenu(self)
+        menu.setStyleSheet("""
+            QMenu { background: #333; color: #eee; border: 1px solid #555; }
+            QMenu::item:selected { background: #0066cc; }
+        """)
+
+        act_insert = menu.addAction("Inserer une page blanche apres")
+        act_delete = menu.addAction("Supprimer cette page")
+
+        action = menu.exec(self._list.mapToGlobal(pos))
+        if action == act_delete:
+            self.page_delete_requested.emit(row)
+        elif action == act_insert:
+            self.page_insert_requested.emit(row)