diff --git a/gui_v6/mask_editor_model.py b/gui_v6/mask_editor_model.py
new file mode 100644
index 0000000..da4ba09
--- /dev/null
+++ b/gui_v6/mask_editor_model.py
@@ -0,0 +1,172 @@
+"""Couche logique pure de l'éditeur de masques (testable sans display Tk).
+
+Sépare la logique métier (rectangles par page, conversions écran↔PDF, hit-test,
+sérialisation de templates) de la fenêtre Tk `MaskEditorWindow`. Le format de
+template reste strictement compatible avec `pdf_mask_designer.Template` (et donc
+avec le moteur d'anonymisation) : on réutilise `MaskRect`/`Template`.
+"""
+
+from __future__ import annotations
+
+from dataclasses import dataclass, field
+from typing import Any, Optional
+
+from pdf_mask_designer import MaskRect, Template, clamp, rect_norm
+
+# Bornes d'affichage de l'éditeur.
+ZOOM_MIN = 0.25
+ZOOM_MAX = 4.0
+
+# Côté minimal (en points PDF) d'un rectangle dessiné ; en dessous, on ignore
+# (évite les masques fantômes créés par un simple clic).
+MIN_RECT_SIZE = 3.0
+
+_DEFAULT_PAGE_SIZE = (595.0, 842.0)
+
+
+def clamp_zoom(zoom: float) -> float:
+    return clamp(float(zoom), ZOOM_MIN, ZOOM_MAX)
+
+
+def clamp_page(index: int, page_count: int) -> int:
+    if page_count <= 0:
+        return 0
+    return int(clamp(int(index), 0, page_count - 1))
+
+
+def screen_to_pdf(cx: float, cy: float, zoom: float) -> tuple[float, float]:
+    """Coordonnées canvas (espace scrollregion, origine 0,0) -> points PDF."""
+    z = zoom or 1.0
+    return (cx / z, cy / z)
+
+
+def pdf_to_screen(px: float, py: float, zoom: float) -> tuple[float, float]:
+    return (px * zoom, py * zoom)
+
+
+def fit_width_zoom(page_width_pt: float, viewport_px: float, padding: float = 24.0) -> float:
+    if page_width_pt <= 0:
+        return 1.0
+    usable = max(1.0, viewport_px - padding)
+    return usable / page_width_pt
+
+
+def fit_page_zoom(
+    page_width_pt: float,
+    page_height_pt: float,
+    viewport_w_px: float,
+    viewport_h_px: float,
+    padding: float = 24.0,
+) -> float:
+    if page_width_pt <= 0 or page_height_pt <= 0:
+        return 1.0
+    zw = max(1.0, viewport_w_px - padding) / page_width_pt
+    zh = max(1.0, viewport_h_px - padding) / page_height_pt
+    return min(zw, zh)
+
+
+@dataclass
+class MaskEditorModel:
+    """État pur de l'éditeur : rectangles (toutes pages) + position courante."""
+
+    name: str = "template_masques"
+    page_index: int = 0
+    page_count: int = 0
+    page_sizes: list[tuple[float, float]] = field(default_factory=list)
+    masks: list[MaskRect] = field(default_factory=list)
+
+    # --- rectangles ---------------------------------------------------------
+    def add_rect(
+        self,
+        page: int,
+        x0: float,
+        y0: float,
+        x1: float,
+        y1: float,
+        label: str = "MASK",
+    ) -> Optional[MaskRect]:
+        nx0, ny0, nx1, ny1 = rect_norm(float(x0), float(y0), float(x1), float(y1))
+        if (nx1 - nx0) < MIN_RECT_SIZE or (ny1 - ny0) < MIN_RECT_SIZE:
+            return None
+        rect = MaskRect(page=int(page), x0=nx0, y0=ny0, x1=nx1, y1=ny1, label=label)
+        self.masks.append(rect)
+        return rect
+
+    def masks_for_page(self, page: int) -> list[MaskRect]:
+        return [m for m in self.masks if m.page == page]
+
+    def rect_at(self, page: int, px: float, py: float) -> Optional[MaskRect]:
+        """Rectangle le plus en avant (dernier dessiné) contenant le point."""
+        for rect in reversed(self.masks):
+            if rect.page != page:
+                continue
+            if rect.x0 <= px <= rect.x1 and rect.y0 <= py <= rect.y1:
+                return rect
+        return None
+
+    def delete_rect(self, rect: MaskRect) -> bool:
+        for idx, existing in enumerate(self.masks):
+            if existing is rect:
+                del self.masks[idx]
+                return True
+        return False
+
+    def clear_page(self, page: int) -> int:
+        before = len(self.masks)
+        self.masks = [m for m in self.masks if m.page != page]
+        return before - len(self.masks)
+
+    def clear_all(self) -> int:
+        count = len(self.masks)
+        self.masks.clear()
+        return count
+
+    def count_page(self, page: int) -> int:
+        return sum(1 for m in self.masks if m.page == page)
+
+    def count_total(self) -> int:
+        return len(self.masks)
+
+    # --- pages --------------------------------------------------------------
+    def set_page(self, index: int) -> int:
+        self.page_index = clamp_page(index, self.page_count)
+        return self.page_index
+
+    def current_page_size(self) -> tuple[float, float]:
+        if 0 <= self.page_index < len(self.page_sizes):
+            return self.page_sizes[self.page_index]
+        return _DEFAULT_PAGE_SIZE
+
+    def reference_page_size(self) -> tuple[float, float]:
+        if self.page_sizes:
+            return self.page_sizes[0]
+        return _DEFAULT_PAGE_SIZE
+
+    # --- templates (compat pdf_mask_designer.Template) ----------------------
+    def to_payload(self) -> dict[str, Any]:
+        width, height = self.reference_page_size()
+        return {
+            "version": 1,
+            "name": (self.name or "template_masques").strip() or "template_masques",
+            "page_size": {"width": float(width), "height": float(height)},
+            "masks": [
+                {
+                    "page": int(m.page),
+                    "x0": round(float(m.x0), 2),
+                    "y0": round(float(m.y0), 2),
+                    "x1": round(float(m.x1), 2),
+                    "y1": round(float(m.y1), 2),
+                    "label": str(m.label),
+                }
+                for m in self.masks
+            ],
+        }
+
+    @classmethod
+    def from_payload(cls, payload: dict[str, Any]) -> "MaskEditorModel":
+        tpl = Template.from_dict(payload or {})
+        return cls(
+            name=tpl.name,
+            page_sizes=[tpl.page_size],
+            masks=list(tpl.masks or []),
+        )
diff --git a/gui_v6/mask_editor_window.py b/gui_v6/mask_editor_window.py
new file mode 100644
index 0000000..9bb0c55
--- /dev/null
+++ b/gui_v6/mask_editor_window.py
@@ -0,0 +1,497 @@
+"""Fenêtre dédiée d'édition des masques de zones fixes (GUI V6).
+
+Remplace l'éditeur encastré dans l'onglet Configuration : ici le document est
+majoritaire et réellement navigable (scroll H+V + molette, zoom, ajuster
+largeur/page, navigation pages), avec création de rectangles au glisser-déposer
+et sélection/suppression individuelle. Le format de template (JSON/YAML) reste
+celui de `pdf_mask_designer.Template` (compat moteur).
+
+La logique métier est dans `gui_v6.mask_editor_model` (testée sans display) ; ce
+module ne contient que la fine couche Tk + des coutures testables en smoke.
+"""
+
+from __future__ import annotations
+
+import json
+from pathlib import Path
+from typing import Any, Callable, Optional
+
+import tkinter as tk
+from tkinter import filedialog, messagebox
+
+import customtkinter as ctk
+
+from gui_v6.mask_editor_model import (
+    MaskEditorModel,
+    clamp_zoom,
+    fit_page_zoom,
+    fit_width_zoom,
+    pdf_to_screen,
+    screen_to_pdf,
+)
+
+WINDOW_TITLE = "Éditeur de masques PDF"
+_CLICK_DRAG_THRESHOLD = 4.0  # px : en-deçà, un relâchement = sélection, pas un tracé
+
+
+class MaskEditorWindow(ctk.CTkToplevel):
+    def __init__(
+        self,
+        master,
+        *,
+        templates_dir: Optional[Path] = None,
+        initial_pdf: Optional[Path] = None,
+        initial_template: Optional[Path] = None,
+        on_template_saved: Optional[Callable[[Path], None]] = None,
+    ) -> None:
+        super().__init__(master)
+        self.title(WINDOW_TITLE)
+        self.geometry("1280x900")
+        self.minsize(900, 640)
+
+        self.model = MaskEditorModel()
+        self.zoom = 1.25
+        self.templates_dir = Path(templates_dir) if templates_dir else None
+        self._on_template_saved = on_template_saved
+
+        self._doc = None  # fitz.Document si PyMuPDF dispo
+        self._doc_path: Optional[Path] = None
+        self._photo = None  # garde une réf à l'image Tk
+        self._selected: Optional[Any] = None  # MaskRect sélectionné
+
+        self._drag_start: Optional[tuple[float, float]] = None
+        self._preview_item: Optional[int] = None
+
+        self._template_name = tk.StringVar(value="template_masques")
+        self._status = tk.StringVar(value="Ouvrez un PDF modèle, ou dessinez sur l'aperçu d'exemple.")
+        self._page_label = tk.StringVar(value="—")
+        self._zoom_label = tk.StringVar(value="125 %")
+        self._count_label = tk.StringVar(value="0 masque")
+
+        self._h_scroll: Optional[tk.Scrollbar] = None
+        self._v_scroll: Optional[tk.Scrollbar] = None
+        self._canvas: Optional[tk.Canvas] = None
+
+        self._build_ui()
+        self._render()
+
+        if initial_pdf:
+            self.open_pdf_path(Path(initial_pdf))
+
+        # Continuité : si un template est déjà actif, on le charge pour que
+        # l'utilisateur reprenne son travail au lieu de repartir d'une page vierge.
+        if initial_template:
+            try:
+                self.load_template_path(Path(initial_template))
+            except Exception:
+                pass
+
+        try:
+            self.transient(master)
+            self.after(120, self._safe_grab)
+        except Exception:
+            pass
+
+    # ------------------------------------------------------------------ UI
+    def _safe_grab(self) -> None:
+        try:
+            self.lift()
+            self.focus_force()
+        except Exception:
+            pass
+
+    def _build_ui(self) -> None:
+        toolbar = ctk.CTkFrame(self)
+        toolbar.pack(side="top", fill="x", padx=8, pady=(8, 4))
+
+        def tbtn(text: str, command, width: int = 0) -> ctk.CTkButton:
+            btn = ctk.CTkButton(toolbar, text=text, command=command, width=width or 0)
+            btn.pack(side="left", padx=3, pady=4)
+            return btn
+
+        tbtn("📄 Ouvrir PDF…", self.open_pdf)
+        ctk.CTkLabel(toolbar, text="│").pack(side="left", padx=2)
+        tbtn("◀", self.prev_page, width=36)
+        ctk.CTkLabel(toolbar, textvariable=self._page_label, width=70).pack(side="left", padx=2)
+        tbtn("▶", self.next_page, width=36)
+        ctk.CTkLabel(toolbar, text="│").pack(side="left", padx=2)
+        tbtn("−", self.zoom_out, width=36)
+        ctk.CTkLabel(toolbar, textvariable=self._zoom_label, width=58).pack(side="left", padx=2)
+        tbtn("+", self.zoom_in, width=36)
+        tbtn("↔ Largeur", self.fit_width)
+        tbtn("⤢ Page", self.fit_page)
+
+        # Deuxième ligne d'outils (templates + suppression).
+        toolbar2 = ctk.CTkFrame(self)
+        toolbar2.pack(side="top", fill="x", padx=8, pady=(0, 4))
+
+        ctk.CTkLabel(toolbar2, text="Nom :").pack(side="left", padx=(6, 2), pady=4)
+        ctk.CTkEntry(toolbar2, textvariable=self._template_name, width=200).pack(side="left", padx=2)
+        ctk.CTkButton(toolbar2, text="💾 Sauver…", command=self.save_template).pack(side="left", padx=3)
+        ctk.CTkButton(toolbar2, text="📂 Charger…", command=self.load_template).pack(side="left", padx=3)
+        ctk.CTkLabel(toolbar2, text="│").pack(side="left", padx=2)
+        ctk.CTkButton(toolbar2, text="🗑 Supprimer sélection", command=self.delete_selected).pack(side="left", padx=3)
+        ctk.CTkButton(toolbar2, text="Effacer page", command=self.clear_page).pack(side="left", padx=3)
+        ctk.CTkButton(toolbar2, text="Effacer tout", command=self.clear_all).pack(side="left", padx=3)
+        ctk.CTkLabel(toolbar2, textvariable=self._count_label, width=90).pack(side="right", padx=8)
+
+        # Zone document = canvas + scrollbars.
+        body = ctk.CTkFrame(self)
+        body.pack(side="top", fill="both", expand=True, padx=8, pady=(0, 4))
+        body.grid_rowconfigure(0, weight=1)
+        body.grid_columnconfigure(0, weight=1)
+
+        canvas = tk.Canvas(body, bg="#e9edf4", highlightthickness=0)
+        canvas.grid(row=0, column=0, sticky="nsew")
+        self._v_scroll = tk.Scrollbar(body, orient="vertical", command=canvas.yview)
+        self._v_scroll.grid(row=0, column=1, sticky="ns")
+        self._h_scroll = tk.Scrollbar(body, orient="horizontal", command=canvas.xview)
+        self._h_scroll.grid(row=1, column=0, sticky="ew")
+        canvas.configure(xscrollcommand=self._h_scroll.set, yscrollcommand=self._v_scroll.set)
+
+        canvas.bind("<ButtonPress-1>", self._on_down)
+        canvas.bind("<B1-Motion>", self._on_drag)
+        canvas.bind("<ButtonRelease-1>", self._on_up)
+        canvas.bind("<Button-3>", self._on_right_click)
+        # Molette (Windows/Mac : <MouseWheel> ; X11 : Button-4/5).
+        canvas.bind("<MouseWheel>", self._on_wheel)
+        canvas.bind("<Shift-MouseWheel>", self._on_wheel_h)
+        canvas.bind("<Button-4>", lambda e: canvas.yview_scroll(-1, "units"))
+        canvas.bind("<Button-5>", lambda e: canvas.yview_scroll(1, "units"))
+        self.bind("<Delete>", lambda e: self.delete_selected())
+        self._canvas = canvas
+
+        statusbar = ctk.CTkLabel(self, textvariable=self._status, anchor="w")
+        statusbar.pack(side="bottom", fill="x", padx=10, pady=(0, 6))
+
+    # ----------------------------------------------------------- coutures test
+    def has_scrollbars(self) -> bool:
+        return self._h_scroll is not None and self._v_scroll is not None
+
+    def add_mask_rect_pdf(
+        self, page: int, x0: float, y0: float, x1: float, y1: float, label: str = "MASK"
+    ):
+        rect = self.model.add_rect(page, x0, y0, x1, y1, label=label)
+        if rect is not None:
+            self._update_count()
+            self._render()
+        return rect
+
+    def select_rect(self, rect) -> None:
+        self._selected = rect
+        self._render()
+
+    def save_template_to(self, path: Path) -> Path:
+        path = Path(path)
+        payload = self._payload()
+        if path.suffix.lower() in {".yml", ".yaml"}:
+            import yaml
+
+            path.write_text(
+                yaml.safe_dump(payload, allow_unicode=True, sort_keys=False), encoding="utf-8"
+            )
+        else:
+            path.write_text(json.dumps(payload, ensure_ascii=False, indent=2), encoding="utf-8")
+        if self._on_template_saved:
+            try:
+                self._on_template_saved(path)
+            except Exception:
+                pass
+        return path
+
+    def load_template_path(self, path: Path) -> None:
+        path = Path(path)
+        if path.suffix.lower() in {".yml", ".yaml"}:
+            import yaml
+
+            payload = yaml.safe_load(path.read_text(encoding="utf-8")) or {}
+        else:
+            payload = json.loads(path.read_text(encoding="utf-8"))
+        loaded = MaskEditorModel.from_payload(payload)
+        # On conserve les pages/tailles du PDF courant, on remplace les masques.
+        self.model.masks = loaded.masks
+        self.model.name = loaded.name
+        if not self.model.page_sizes:
+            self.model.page_sizes = loaded.page_sizes
+        self._template_name.set(loaded.name)
+        self._selected = None
+        self._update_count()
+        self._render()
+        self._status.set(f"Template chargé : {path.name}")
+
+    # ------------------------------------------------------------------ PDF
+    def open_pdf(self) -> None:
+        path = filedialog.askopenfilename(title="PDF modèle", filetypes=[("PDF", "*.pdf")])
+        if path:
+            self.open_pdf_path(Path(path))
+
+    def open_pdf_path(self, path: Path) -> None:
+        try:
+            import fitz
+
+            doc = fitz.open(str(path))
+            if len(doc) == 0:
+                raise ValueError("PDF vide")
+            if self._doc is not None:
+                try:
+                    self._doc.close()
+                except Exception:
+                    pass
+            self._doc = doc
+            self._doc_path = Path(path)
+            self.model.page_count = len(doc)
+            self.model.page_sizes = [
+                (float(doc[i].rect.width), float(doc[i].rect.height)) for i in range(len(doc))
+            ]
+            self.model.set_page(0)
+            self.model.clear_all()
+            self._selected = None
+            self._template_name.set(f"{self._doc_path.stem}_template")
+            self._status.set(f"{self._doc_path.name} — {len(doc)} page(s)")
+            self.fit_width()
+        except Exception as exc:  # pragma: no cover - dépend de l'environnement
+            messagebox.showerror("Masques PDF", f"Impossible d'ouvrir le PDF : {exc}")
+
+    # --------------------------------------------------------------- navigation
+    def prev_page(self) -> None:
+        self.model.set_page(self.model.page_index - 1)
+        self._selected = None
+        self._render()
+
+    def next_page(self) -> None:
+        self.model.set_page(self.model.page_index + 1)
+        self._selected = None
+        self._render()
+
+    def set_zoom(self, zoom: float) -> None:
+        self.zoom = clamp_zoom(zoom)
+        self._render()
+
+    def zoom_in(self) -> None:
+        self.set_zoom(self.zoom + 0.15)
+
+    def zoom_out(self) -> None:
+        self.set_zoom(self.zoom - 0.15)
+
+    def fit_width(self) -> None:
+        page_w, _ = self.model.current_page_size()
+        vp = self._canvas.winfo_width() if self._canvas else 0
+        if vp <= 1:
+            vp = 1200
+        self.set_zoom(fit_width_zoom(page_w, vp))
+
+    def fit_page(self) -> None:
+        page_w, page_h = self.model.current_page_size()
+        vw = self._canvas.winfo_width() if self._canvas else 0
+        vh = self._canvas.winfo_height() if self._canvas else 0
+        if vw <= 1:
+            vw = 1200
+        if vh <= 1:
+            vh = 800
+        self.set_zoom(fit_page_zoom(page_w, page_h, vw, vh))
+
+    # ----------------------------------------------------------- masques
+    def clear_page(self) -> None:
+        removed = self.model.clear_page(self.model.page_index)
+        self._selected = None
+        self._update_count()
+        self._render()
+        self._status.set(f"{removed} masque(s) supprimé(s) sur la page {self.model.page_index + 1}.")
+
+    def clear_all(self) -> None:
+        removed = self.model.clear_all()
+        self._selected = None
+        self._update_count()
+        self._render()
+        self._status.set(f"{removed} masque(s) supprimé(s).")
+
+    def delete_selected(self) -> None:
+        if self._selected is None:
+            self._status.set("Aucun masque sélectionné.")
+            return
+        if self.model.delete_rect(self._selected):
+            self._selected = None
+            self._update_count()
+            self._render()
+            self._status.set("Masque supprimé.")
+
+    # ----------------------------------------------------------- templates UI
+    def _payload(self) -> dict[str, Any]:
+        self.model.name = self._template_name.get().strip() or "template_masques"
+        return self.model.to_payload()
+
+    def _templates_initialdir(self) -> Path:
+        if self.templates_dir is not None:
+            self.templates_dir.mkdir(parents=True, exist_ok=True)
+            return self.templates_dir
+        if self._doc_path is not None:
+            return self._doc_path.parent
+        return Path.cwd()
+
+    def save_template(self) -> Optional[Path]:
+        if not self.model.masks:
+            messagebox.showwarning("Masques PDF", "Dessinez au moins un masque avant de sauvegarder.")
+            return None
+        name = self._template_name.get().strip() or "template_masques"
+        selected = filedialog.asksaveasfilename(
+            title="Sauver le template",
+            defaultextension=".json",
+            filetypes=[("JSON", "*.json"), ("YAML", "*.yml *.yaml")],
+            initialdir=str(self._templates_initialdir()),
+            initialfile=f"{name}.json",
+        )
+        if not selected:
+            return None
+        try:
+            path = self.save_template_to(Path(selected))
+            self._status.set(f"Template sauvegardé : {path.name}")
+            return path
+        except Exception as exc:  # pragma: no cover
+            messagebox.showerror("Masques PDF", f"Impossible d'écrire le template : {exc}")
+            return None
+
+    def load_template(self) -> None:
+        selected = filedialog.askopenfilename(
+            title="Charger un template",
+            filetypes=[("YAML/JSON", "*.yml *.yaml *.json")],
+            initialdir=str(self._templates_initialdir()),
+        )
+        if not selected:
+            return
+        try:
+            self.load_template_path(Path(selected))
+        except Exception as exc:  # pragma: no cover
+            messagebox.showerror("Masques PDF", f"Template invalide : {exc}")
+
+    # ----------------------------------------------------------- canvas events
+    def _on_down(self, event) -> None:
+        canvas = self._canvas
+        self._drag_start = (canvas.canvasx(event.x), canvas.canvasy(event.y))
+        cx, cy = self._drag_start
+        self._preview_item = canvas.create_rectangle(cx, cy, cx, cy, outline="#e94560", width=2)
+
+    def _on_drag(self, event) -> None:
+        if self._drag_start is None or self._preview_item is None:
+            return
+        canvas = self._canvas
+        sx, sy = self._drag_start
+        cx, cy = canvas.canvasx(event.x), canvas.canvasy(event.y)
+        canvas.coords(self._preview_item, sx, sy, cx, cy)
+
+    def _on_up(self, event) -> None:
+        if self._drag_start is None:
+            return
+        canvas = self._canvas
+        sx, sy = self._drag_start
+        cx, cy = canvas.canvasx(event.x), canvas.canvasy(event.y)
+        if self._preview_item is not None:
+            canvas.delete(self._preview_item)
+            self._preview_item = None
+        self._drag_start = None
+
+        page = self.model.page_index
+        if abs(cx - sx) < _CLICK_DRAG_THRESHOLD and abs(cy - sy) < _CLICK_DRAG_THRESHOLD:
+            # Simple clic -> sélection du rectangle sous le curseur.
+            px, py = screen_to_pdf(cx, cy, self.zoom)
+            self._selected = self.model.rect_at(page, px, py)
+            self._render()
+            if self._selected is not None:
+                self._status.set("Masque sélectionné (Suppr pour effacer).")
+            return
+
+        x0, y0 = screen_to_pdf(sx, sy, self.zoom)
+        x1, y1 = screen_to_pdf(cx, cy, self.zoom)
+        rect = self.model.add_rect(page, x0, y0, x1, y1)
+        if rect is not None:
+            self._selected = rect
+            self._update_count()
+            self._render()
+            self._status.set(
+                f"Masque ajouté p.{page + 1} ({int(rect.x0)},{int(rect.y0)})–({int(rect.x1)},{int(rect.y1)})."
+            )
+
+    def _on_right_click(self, event) -> None:
+        canvas = self._canvas
+        px, py = screen_to_pdf(canvas.canvasx(event.x), canvas.canvasy(event.y), self.zoom)
+        target = self.model.rect_at(self.model.page_index, px, py)
+        if target is not None:
+            self.model.delete_rect(target)
+            if self._selected is target:
+                self._selected = None
+            self._update_count()
+            self._render()
+            self._status.set("Masque supprimé.")
+
+    def _on_wheel(self, event) -> None:
+        delta = -1 if event.delta > 0 else 1
+        self._canvas.yview_scroll(delta, "units")
+
+    def _on_wheel_h(self, event) -> None:
+        delta = -1 if event.delta > 0 else 1
+        self._canvas.xview_scroll(delta, "units")
+
+    # ----------------------------------------------------------- rendering
+    def _update_count(self) -> None:
+        total = self.model.count_total()
+        page = self.model.count_page(self.model.page_index)
+        self._count_label.set(f"{page} / {total} masque(s)")
+
+    def _render(self) -> None:
+        canvas = self._canvas
+        if canvas is None:
+            return
+        canvas.delete("all")
+        page_w, page_h = self.model.current_page_size()
+        scale = self.zoom
+        img_w = page_w * scale
+        img_h = page_h * scale
+
+        drawn = False
+        if self._doc is not None:
+            try:
+                import fitz
+                from PIL import Image, ImageTk
+
+                page = self._doc[self.model.page_index]
+                pix = page.get_pixmap(matrix=fitz.Matrix(scale, scale), annots=False)
+                img = Image.frombytes("RGB", [pix.width, pix.height], pix.samples)
+                self._photo = ImageTk.PhotoImage(img)
+                canvas.create_image(0, 0, image=self._photo, anchor="nw")
+                img_w, img_h = pix.width, pix.height
+                drawn = True
+            except Exception:
+                drawn = False
+        if not drawn:
+            self._draw_sample_page(canvas, img_w, img_h)
+
+        self._draw_rectangles(canvas)
+        canvas.configure(scrollregion=(0, 0, img_w, img_h))
+
+        self._page_label.set(f"{self.model.page_index + 1} / {max(1, self.model.page_count)}")
+        self._zoom_label.set(f"{round(self.zoom * 100)} %")
+        self._update_count()
+
+    def _draw_sample_page(self, canvas: tk.Canvas, w: float, h: float) -> None:
+        canvas.create_rectangle(0, 0, w, h, fill="#ffffff", outline="#b9c2d0", width=1)
+        header_h = min(60.0, h * 0.14)
+        canvas.create_rectangle(0, 0, w, header_h, fill="#e5e7eb", outline="")
+        scale = self.zoom
+        canvas.create_text(18 * scale, 30 * scale, text="EN-TÊTE ÉTABLISSEMENT  [LOGO]", fill="#6b7280", anchor="w")
+        for idx, line in enumerate(
+            [
+                "Patient : Dupont Jean   Né le : 12/03/1955",
+                "IPP : 1234567   NDA : 8901234",
+                "Motif : Insuffisance cardiaque décompensée.",
+                "Signé : Dr Martin RPPS 12345678",
+            ]
+        ):
+            canvas.create_text(28 * scale, (120 + idx * 30) * scale, text=line, fill="#111827", anchor="w")
+
+    def _draw_rectangles(self, canvas: tk.Canvas) -> None:
+        for rect in self.model.masks_for_page(self.model.page_index):
+            x0, y0 = pdf_to_screen(rect.x0, rect.y0, self.zoom)
+            x1, y1 = pdf_to_screen(rect.x1, rect.y1, self.zoom)
+            if rect is self._selected:
+                canvas.create_rectangle(x0, y0, x1, y1, fill="#000000", stipple="gray50", outline="#e94560", width=3)
+            else:
+                canvas.create_rectangle(x0, y0, x1, y1, fill="#000000", stipple="gray25", outline="#111827", width=2)
diff --git a/gui_v6/tabs/tab_config.py b/gui_v6/tabs/tab_config.py
index 2923e87..b7f19b4 100644
--- a/gui_v6/tabs/tab_config.py
+++ b/gui_v6/tabs/tab_config.py
@@ -8,13 +8,10 @@ Partage/Règles.
 
 from __future__ import annotations
 
-import json
 import sys
 import webbrowser
 from pathlib import Path
 from tkinter import filedialog, messagebox
-import tkinter as tk
-from typing import Any
 
 import customtkinter as ctk
 
@@ -109,10 +106,6 @@ def _app_base_dir() -> Path:
     return Path.cwd()
 
 
-def _clamp(value: float, low: float, high: float) -> float:
-    return max(low, min(high, value))
-
-
 class ConfigTab(ctk.CTkFrame):
     def __init__(self, master, state: ConfigState | None = None, palette: dict | None = None, **kwargs):
         self._p = palette or theme_mod.get_palette(theme_mod.DEFAULT_THEME)
@@ -131,24 +124,12 @@ class ConfigTab(ctk.CTkFrame):
         self._mask_margin_x_var = ctk.IntVar(value=self._state.mask_margin_x)
         self._mask_margin_y_var = ctk.IntVar(value=self._state.mask_margin_y)
         self._mask_rounded_var = ctk.BooleanVar(value=self._state.mask_rounded_corners)
-        self._mask_template_name = ctk.StringVar(value="template_masques")
-        self._mask_dpi = ctk.IntVar(value=200)
-        self._mask_zoom = 1.0
-        self._mask_zoom_text = ctk.StringVar(value="100%")
-        self._mask_status_text = ctk.StringVar(value="Aucun PDF chargé")
-        self._mask_count_text = ctk.StringVar(value="0 masque")
+        self._mask_status_text = ctk.StringVar(value="Éditeur de masques en fenêtre dédiée.")
 
-        self._mask_doc = None
-        self._mask_pdf_path: Path | None = None
-        self._mask_page_index = 0
-        self._mask_page_size = (595.0, 842.0)
-        self._mask_rects: list[dict[str, Any]] = []
-        self._mask_photo = None
-        self._mask_canvas: tk.Canvas | None = None
-        self._mask_page_origin = (0.0, 0.0)
-        self._mask_current_scale = 1.0
-        self._mask_drag_start: tuple[float, float] | None = None
-        self._mask_preview_item: int | None = None
+        # L'édition interactive des masques se fait dans une fenêtre séparée
+        # (gui_v6.mask_editor_window) ; on garde juste une référence à l'instance
+        # ouverte pour éviter d'en empiler plusieurs.
+        self._mask_editor_window = None
 
         self._build()
 
@@ -212,8 +193,6 @@ class ConfigTab(ctk.CTkFrame):
                 font=ui_kit.font(13, "bold" if active else "normal"),
             )
         self._panels[key].tkraise()
-        if key == "msk":
-            self.after_idle(self._refresh_mask_canvas)
 
     # -- Réglages ---------------------------------------------------------
 
@@ -410,109 +389,35 @@ class ConfigTab(ctk.CTkFrame):
 
         editor = ui_kit.Card(parent, p, title="🏠 Masques de zones fixes")
         editor.pack(fill="x", pady=(8, 0))
-
-        toolbar = ctk.CTkFrame(editor, fg_color="transparent")
-        toolbar.pack(fill="x", padx=12, pady=(0, 8))
-        ui_kit.primary_button(toolbar, p, "📄 Ouvrir PDF…", command=self._open_mask_pdf).pack(
-            side="left", padx=(0, 6)
-        )
-        ui_kit.secondary_button(toolbar, p, "↙ Fenêtre complète", command=self._open_full_mask_editor).pack(
-            side="left", padx=(0, 6)
-        )
-        self._toolbar_button(toolbar, "←", lambda: self._move_mask_page(-1), width=38).pack(side="left", padx=(0, 4))
-        self._toolbar_button(toolbar, "→", lambda: self._move_mask_page(1), width=38).pack(side="left", padx=(0, 8))
-        self._toolbar_button(toolbar, "−", lambda: self._zoom_mask(-0.15), width=38).pack(side="left", padx=(0, 4))
-        ctk.CTkLabel(toolbar, textvariable=self._mask_zoom_text, text_color=p["text_muted"], font=ui_kit.font(12), width=46).pack(
-            side="left"
-        )
-        self._toolbar_button(toolbar, "+", lambda: self._zoom_mask(0.15), width=38).pack(side="left", padx=(4, 8))
-
-        work = ctk.CTkFrame(editor, fg_color="transparent")
-        work.pack(fill="x", padx=12, pady=(0, 12))
-        canvas_wrap = ctk.CTkFrame(
-            work,
-            fg_color=p["divider"],
-            border_color=p["card_border"],
-            border_width=1,
-            corner_radius=8,
-            height=292,
-        )
-        canvas_wrap.pack(side="left", fill="both", expand=True, padx=(0, 8))
-        canvas_wrap.pack_propagate(False)
-        self._mask_canvas = tk.Canvas(
-            canvas_wrap,
-            bg=p["divider"],
-            highlightthickness=0,
-            bd=0,
-            height=288,
-            cursor="crosshair",
-        )
-        self._mask_canvas.pack(fill="both", expand=True, padx=6, pady=6)
-        self._mask_canvas.bind("<ButtonPress-1>", self._on_mask_canvas_down)
-        self._mask_canvas.bind("<B1-Motion>", self._on_mask_canvas_drag)
-        self._mask_canvas.bind("<ButtonRelease-1>", self._on_mask_canvas_up)
-        self._mask_canvas.bind("<Configure>", lambda _event: self._refresh_mask_canvas())
-
-        side = ctk.CTkFrame(
-            work,
-            fg_color=p["divider"],
-            border_color=p["card_border"],
-            border_width=1,
-            corner_radius=8,
-            width=230,
-        )
-        side.pack(side="left", fill="y")
-
-        ctk.CTkLabel(side, text="Template", text_color=p["text_dim"], font=ui_kit.font(11, "bold"), anchor="w").pack(
-            fill="x", padx=12, pady=(12, 2)
-        )
-        ctk.CTkEntry(
-            side,
-            textvariable=self._mask_template_name,
-            fg_color=p["btn_sec_bg"],
-            border_color=p["btn_sec_border"],
-            text_color=p["text"],
-            height=30,
-        ).pack(fill="x", padx=12, pady=(0, 8))
-
-        dpi_row = ctk.CTkFrame(side, fg_color="transparent")
-        dpi_row.pack(fill="x", padx=12, pady=(0, 8))
-        ctk.CTkLabel(dpi_row, text="DPI raster", text_color=p["text_muted"], font=ui_kit.font(12)).pack(side="left")
-        ctk.CTkEntry(
-            dpi_row,
-            textvariable=self._mask_dpi,
-            fg_color=p["btn_sec_bg"],
-            border_color=p["btn_sec_border"],
-            text_color=p["text"],
-            width=62,
-            height=28,
-            justify="center",
-        ).pack(side="right")
-
-        ui_kit.secondary_button(side, p, "💾 Sauver JSON", command=self._save_mask_template).pack(
-            fill="x", padx=12, pady=(0, 6)
-        )
-        ui_kit.secondary_button(side, p, "📁 Charger", command=self._load_mask_template).pack(
-            fill="x", padx=12, pady=(0, 6)
-        )
-        ui_kit.secondary_button(side, p, "👁 Prévisualiser", command=self._preview_mask_template).pack(
-            fill="x", padx=12, pady=(0, 6)
-        )
-        ui_kit.primary_button(side, p, "▶ Appliquer", command=self._apply_mask_template_selection).pack(
-            fill="x", padx=12, pady=(0, 10)
-        )
-
-        clear_row = ctk.CTkFrame(side, fg_color="transparent")
-        clear_row.pack(fill="x", padx=12, pady=(0, 8))
-        ui_kit.secondary_button(clear_row, p, "Page", command=self._clear_mask_page).pack(side="left", fill="x", expand=True, padx=(0, 4))
-        ui_kit.secondary_button(clear_row, p, "Tout", command=self._clear_all_masks).pack(side="left", fill="x", expand=True, padx=(4, 0))
-
-        ctk.CTkLabel(side, textvariable=self._mask_status_text, text_color=p["text_muted"], font=ui_kit.font(11), wraplength=190, justify="left").pack(
-            fill="x", padx=12, pady=(4, 4)
-        )
-        ctk.CTkLabel(side, textvariable=self._mask_count_text, text_color=p["primary"], font=ui_kit.font(13, "bold")).pack(
-            fill="x", padx=12, pady=(0, 12)
-        )
+        ctk.CTkLabel(
+            editor,
+            text=(
+                "Définissez les zones à masquer (en-têtes, blocs identité…) directement sur "
+                "votre PDF, dans une fenêtre dédiée où le document est affiché en grand et "
+                "défilable (scroll, zoom, ajuster largeur/page). Les templates enregistrés "
+                "apparaissent ensuite dans « Template de masque manuel » (onglet Réglages)."
+            ),
+            text_color=p["text_muted"],
+            font=ui_kit.font(12),
+            justify="left",
+            wraplength=760,
+            anchor="w",
+        ).pack(fill="x", padx=14, pady=(0, 10))
+        actions = ctk.CTkFrame(editor, fg_color="transparent")
+        actions.pack(fill="x", padx=14, pady=(0, 6))
+        ui_kit.primary_button(
+            actions, p, "🖊  Ouvrir l'éditeur de masques", command=self._open_full_mask_editor
+        ).pack(side="left")
+        ui_kit.secondary_button(
+            actions, p, "📁 Dossier des templates", command=self._open_templates_dir
+        ).pack(side="left", padx=(8, 0))
+        ctk.CTkLabel(
+            editor,
+            textvariable=self._mask_status_text,
+            text_color=p["text_muted"],
+            font=ui_kit.font(11),
+            anchor="w",
+        ).pack(fill="x", padx=14, pady=(2, 12))
 
     # -- Partage / Règles -------------------------------------------------
 
@@ -625,7 +530,6 @@ class ConfigTab(ctk.CTkFrame):
                 border_color=p["primary"] if value == color else p["card_border"],
                 border_width=3 if value == color else 1,
             )
-        self._refresh_mask_canvas()
 
     def _on_mask_margin_x(self, value: float) -> None:
         self._state.mask_margin_x = int(round(value))
@@ -651,337 +555,63 @@ class ConfigTab(ctk.CTkFrame):
 
     # -- éditeur masques --------------------------------------------------
 
-    def _open_mask_pdf(self) -> None:
-        path = filedialog.askopenfilename(title="PDF modèle", filetypes=[("PDF", "*.pdf")])
-        if not path:
-            return
-        try:
-            import fitz
-
-            doc = fitz.open(path)
-            if len(doc) == 0:
-                raise ValueError("PDF vide")
-            if self._mask_doc is not None:
-                try:
-                    self._mask_doc.close()
-                except Exception:
-                    pass
-            self._mask_doc = doc
-            self._mask_pdf_path = Path(path)
-            self._mask_page_index = 0
-            self._mask_page_size = (float(doc[0].rect.width), float(doc[0].rect.height))
-            self._mask_rects.clear()
-            self._mask_template_name.set(f"{self._mask_pdf_path.stem}_template")
-            self._mask_status_text.set(f"{self._mask_pdf_path.name} — page 1/{len(doc)}")
-            self._update_mask_count()
-            self._refresh_mask_canvas()
-        except Exception as exc:
-            messagebox.showerror("Masques PDF", f"Impossible d'ouvrir le PDF : {exc}")
 
     def _open_full_mask_editor(self) -> None:
-        try:
-            from pdf_mask_designer import MaskDesignerApp
-
-            win = tk.Toplevel(self)
-            MaskDesignerApp(win, templates_dir=ensure_mask_templates_dir(_app_base_dir()))
-        except Exception as exc:
-            messagebox.showerror("Masques PDF", f"Impossible d'ouvrir l'éditeur complet : {exc}")
-
-    def _move_mask_page(self, delta: int) -> None:
-        if self._mask_doc is None:
-            return
-        self._mask_page_index = int(_clamp(self._mask_page_index + delta, 0, len(self._mask_doc) - 1))
-        page = self._mask_doc[self._mask_page_index]
-        self._mask_page_size = (float(page.rect.width), float(page.rect.height))
-        self._mask_status_text.set(f"{self._mask_pdf_path.name if self._mask_pdf_path else 'PDF'} — page {self._mask_page_index + 1}/{len(self._mask_doc)}")
-        self._update_mask_count()
-        self._refresh_mask_canvas()
-
-    def _zoom_mask(self, delta: float) -> None:
-        self._mask_zoom = _clamp(self._mask_zoom + delta, 0.55, 2.5)
-        self._mask_zoom_text.set(f"{round(self._mask_zoom * 100)}%")
-        self._refresh_mask_canvas()
-
-    def _clear_mask_page(self) -> None:
-        self._mask_rects = [m for m in self._mask_rects if int(m.get("page", 0)) != self._mask_page_index]
-        self._mask_status_text.set(f"Masques page {self._mask_page_index + 1} supprimés.")
-        self._update_mask_count()
-        self._refresh_mask_canvas()
-
-    def _clear_all_masks(self) -> None:
-        self._mask_rects.clear()
-        self._mask_status_text.set("Tous les masques ont été supprimés.")
-        self._update_mask_count()
-        self._refresh_mask_canvas()
-
-    def _preview_mask_template(self) -> None:
-        count = self._current_page_mask_count()
-        self._mask_status_text.set(f"Prévisualisation : {count} masque(s) sur la page courante.")
-        self._refresh_mask_canvas()
-
-    def _apply_mask_template_selection(self) -> None:
-        path = self._save_mask_template(silent=True)
-        if path is None:
-            return
-        self._state.manual_mask_template = path
-        self._manual_mask_required_var.set(True)
-        self._on_manual_mask_required()
-        self._refresh_manual_mask_templates()
-        self._manual_mask_var.set(mask_template_label(path, _app_base_dir()))
-        self._mask_status_text.set(f"Template actif : {path.name}")
-
-    def _save_mask_template(self, silent: bool = False) -> Path | None:
-        tpl = self._current_mask_template_payload()
-        if not tpl["masks"]:
-            self._mask_status_text.set("Dessinez au moins un masque avant de sauvegarder.")
-            if not silent:
-                messagebox.showwarning("Masques PDF", "Aucun masque défini.")
-            return None
-        initial_dir = ensure_mask_templates_dir(_app_base_dir())
-        default_name = f"{tpl['name'] or 'template_masques'}.json"
-        if silent:
-            path = initial_dir / default_name
-        else:
-            selected = filedialog.asksaveasfilename(
-                title="Sauver le template",
-                defaultextension=".json",
-                filetypes=[("JSON", "*.json")],
-                initialdir=str(initial_dir),
-                initialfile=default_name,
-            )
-            if not selected:
-                return None
-            path = Path(selected)
-        try:
-            path.write_text(json.dumps(tpl, ensure_ascii=False, indent=2), encoding="utf-8")
-            self._mask_status_text.set(f"Template sauvegardé : {path.name}")
-            self._refresh_manual_mask_templates()
-            return path
-        except Exception as exc:
-            if not silent:
-                messagebox.showerror("Masques PDF", f"Impossible d'écrire le template : {exc}")
-            self._mask_status_text.set("Échec sauvegarde template.")
-            return None
-
-    def _load_mask_template(self) -> None:
-        initial_dir = ensure_mask_templates_dir(_app_base_dir())
-        selected = filedialog.askopenfilename(
-            title="Charger un template",
-            filetypes=[("Templates", "*.json *.yml *.yaml")],
-            initialdir=str(initial_dir),
-        )
-        if not selected:
-            return
-        try:
-            payload = self._read_mask_template(Path(selected))
-            self._mask_template_name.set(str(payload.get("name") or Path(selected).stem))
-            ps = payload.get("page_size") or {}
-            self._mask_page_size = (float(ps.get("width", 595)), float(ps.get("height", 842)))
-            self._mask_rects = [
-                {
-                    "page": int(m.get("page", 0)),
-                    "x0": float(m.get("x0", 0)),
-                    "y0": float(m.get("y0", 0)),
-                    "x1": float(m.get("x1", 0)),
-                    "y1": float(m.get("y1", 0)),
-                    "label": str(m.get("label", "MASK")),
-                }
-                for m in payload.get("masks", [])
-            ]
-            self._state.manual_mask_template = Path(selected)
-            self._refresh_manual_mask_templates()
-            self._manual_mask_var.set(mask_template_label(Path(selected), _app_base_dir()))
-            self._mask_status_text.set(f"Template chargé : {Path(selected).name}")
-            self._update_mask_count()
-            self._refresh_mask_canvas()
-        except Exception as exc:
-            messagebox.showerror("Masques PDF", f"Template invalide : {exc}")
-
-    def _read_mask_template(self, path: Path) -> dict[str, Any]:
-        if path.suffix.lower() in {".yml", ".yaml"}:
-            import yaml
-
-            return yaml.safe_load(path.read_text(encoding="utf-8")) or {}
-        return json.loads(path.read_text(encoding="utf-8"))
-
-    def _current_mask_template_payload(self) -> dict[str, Any]:
-        width, height = self._mask_page_size
-        return {
-            "version": 1,
-            "name": self._mask_template_name.get().strip() or "template_masques",
-            "page_size": {"width": width, "height": height},
-            "masks": [
-                {
-                    "page": int(m["page"]),
-                    "x0": round(float(m["x0"]), 2),
-                    "y0": round(float(m["y0"]), 2),
-                    "x1": round(float(m["x1"]), 2),
-                    "y1": round(float(m["y1"]), 2),
-                    "label": str(m.get("label", "MASK")),
-                }
-                for m in self._mask_rects
-            ],
-        }
-
-    def _refresh_mask_canvas(self) -> None:
-        canvas = self._mask_canvas
-        if canvas is None:
-            return
-        canvas.delete("all")
-        p = self._p
-        width = max(360, canvas.winfo_width() or 420)
-        height = max(260, canvas.winfo_height() or 318)
-        page_w, page_h = self._mask_page_size
-        fit_scale = min((width - 26) / page_w, (height - 26) / page_h)
-        scale = max(0.1, fit_scale * self._mask_zoom)
-        page_px_w = page_w * scale
-        page_px_h = page_h * scale
-        origin_x = max(12, (width - page_px_w) / 2)
-        origin_y = 12
-        self._mask_page_origin = (origin_x, origin_y)
-        self._mask_current_scale = scale
-
-        if self._mask_doc is not None:
+        existing = self._mask_editor_window
+        if existing is not None:
             try:
-                from PIL import Image, ImageTk
-                import fitz
-
-                page = self._mask_doc[self._mask_page_index]
-                pix = page.get_pixmap(matrix=fitz.Matrix(scale, scale), annots=False)
-                img = Image.frombytes("RGB", [pix.width, pix.height], pix.samples)
-                self._mask_photo = ImageTk.PhotoImage(img)
-                canvas.create_image(origin_x, origin_y, image=self._mask_photo, anchor="nw")
+                if existing.winfo_exists():
+                    existing.lift()
+                    existing.focus_force()
+                    return
             except Exception:
-                self._draw_sample_page(canvas, origin_x, origin_y, page_px_w, page_px_h)
-        else:
-            self._draw_sample_page(canvas, origin_x, origin_y, page_px_w, page_px_h)
+                pass
+        try:
+            from gui_v6.mask_editor_window import MaskEditorWindow
 
-        self._draw_mask_rectangles(canvas)
-        if self._mask_doc is None:
-            canvas.create_text(
-                width / 2,
-                height - 18,
-                text="Ouvrez un PDF modèle, ou dessinez directement sur l'aperçu d'exemple.",
-                fill=p["text_muted"],
-                font=("TkDefaultFont", 9),
+            active = self._state.manual_mask_template
+            initial_template = active if (active and Path(active).exists()) else None
+            win = MaskEditorWindow(
+                self.winfo_toplevel(),
+                templates_dir=ensure_mask_templates_dir(_app_base_dir()),
+                initial_template=initial_template,
+                on_template_saved=self._on_mask_template_saved,
             )
+            self._mask_editor_window = win
+            self._mask_status_text.set("Éditeur de masques ouvert.")
+        except Exception as exc:
+            messagebox.showerror("Masques PDF", f"Impossible d'ouvrir l'éditeur : {exc}")
+
+    def _on_mask_template_saved(self, path: Path) -> None:
+        """Callback déclenché par la fenêtre dédiée après sauvegarde d'un template."""
+        self._refresh_manual_mask_templates()
+        try:
+            self._manual_mask_var.set(mask_template_label(path, _app_base_dir()))
+            self._state.manual_mask_template = path
+        except Exception:
+            pass
+        self._mask_status_text.set(f"Template enregistré : {path.name}")
+
+
+
+
+
+
+
+
+
+
+
 
-    def _draw_sample_page(self, canvas: tk.Canvas, x: float, y: float, w: float, h: float) -> None:
-        p = self._p
-        canvas.create_rectangle(x, y, x + w, y + h, fill="#f8fafc", outline=p["card_border"], width=1)
-        header_h = min(54, h * 0.16)
-        canvas.create_rectangle(x, y, x + w, y + header_h, fill="#e5e7eb", outline="")
-        scale = self._mask_current_scale
-        canvas.create_text(x + 18 * scale, y + 35 * scale, text="EN-TÊTE ÉTABLISSEMENT  [LOGO]", fill="#6b7280", anchor="w", font=("TkDefaultFont", 10, "bold"))
-        canvas.create_text(x + 18 * scale, y + 72 * scale, text="Service de cardiologie | Tel : 05.59.XX.XX.XX", fill="#6b7280", anchor="w", font=("TkDefaultFont", 8))
-        for idx, line in enumerate(
-            [
-                "Patient : Dupont Jean   Né le : 12/03/1955",
-                "IPP : 1234567   NDA : 8901234",
-                "Motif : Insuffisance cardiaque décompensée.",
-                "Traitement : FUROSEMIDE 40mg, BISOPROLOL 5mg.",
-                "Signé : Dr Martin RPPS 12345678",
-            ]
-        ):
-            canvas.create_text(x + 28 * scale, y + (128 + idx * 32) * scale, text=line, fill="#111827", anchor="w", font=("TkDefaultFont", 8))
 
-    def _draw_mask_rectangles(self, canvas: tk.Canvas) -> None:
-        x0, y0 = self._mask_page_origin
-        scale = self._mask_current_scale
-        for idx, mask in enumerate(self._mask_rects):
-            if int(mask.get("page", 0)) != self._mask_page_index:
-                continue
-            rx0 = x0 + float(mask["x0"]) * scale
-            ry0 = y0 + float(mask["y0"]) * scale
-            rx1 = x0 + float(mask["x1"]) * scale
-            ry1 = y0 + float(mask["y1"]) * scale
-            canvas.create_rectangle(rx0, ry0, rx1, ry1, fill=self._mask_color, outline=self._p["primary"], width=2, tags=(f"mask-{idx}",))
-            canvas.create_text((rx0 + rx1) / 2, (ry0 + ry1) / 2, text="×", fill="#ffffff", font=("TkDefaultFont", 10, "bold"))
 
-    def _on_mask_canvas_down(self, event) -> None:
-        canvas = self._mask_canvas
-        if canvas is None:
-            return
-        point = self._canvas_to_pdf(event.x, event.y)
-        if point is None:
-            return
-        hit = self._mask_at(point)
-        if hit is not None:
-            del self._mask_rects[hit]
-            self._mask_status_text.set("Masque supprimé.")
-            self._update_mask_count()
-            self._refresh_mask_canvas()
-            return
-        self._mask_drag_start = point
-        x, y = event.x, event.y
-        self._mask_preview_item = canvas.create_rectangle(x, y, x, y, outline=self._p["primary"], width=2, dash=(4, 2))
 
-    def _on_mask_canvas_drag(self, event) -> None:
-        canvas = self._mask_canvas
-        if canvas is None or self._mask_drag_start is None or self._mask_preview_item is None:
-            return
-        start = self._pdf_to_canvas(self._mask_drag_start)
-        if start is None:
-            return
-        canvas.coords(self._mask_preview_item, start[0], start[1], event.x, event.y)
 
-    def _on_mask_canvas_up(self, event) -> None:
-        canvas = self._mask_canvas
-        if canvas is None or self._mask_drag_start is None:
-            return
-        end = self._canvas_to_pdf(event.x, event.y)
-        if self._mask_preview_item is not None:
-            canvas.delete(self._mask_preview_item)
-        self._mask_preview_item = None
-        start = self._mask_drag_start
-        self._mask_drag_start = None
-        if end is None:
-            return
-        x0, y0 = start
-        x1, y1 = end
-        rx0, rx1 = sorted([x0, x1])
-        ry0, ry1 = sorted([y0, y1])
-        if (rx1 - rx0) < 5 or (ry1 - ry0) < 5:
-            return
-        self._mask_rects.append(
-            {"page": self._mask_page_index, "x0": rx0, "y0": ry0, "x1": rx1, "y1": ry1, "label": "MASK"}
-        )
-        self._mask_status_text.set(f"Masque ajouté page {self._mask_page_index + 1}.")
-        self._update_mask_count()
-        self._refresh_mask_canvas()
 
-    def _canvas_to_pdf(self, x: float, y: float) -> tuple[float, float] | None:
-        ox, oy = self._mask_page_origin
-        scale = self._mask_current_scale
-        page_w, page_h = self._mask_page_size
-        px = (x - ox) / scale
-        py = (y - oy) / scale
-        if px < 0 or py < 0 or px > page_w or py > page_h:
-            return None
-        return px, py
 
-    def _pdf_to_canvas(self, point: tuple[float, float]) -> tuple[float, float] | None:
-        ox, oy = self._mask_page_origin
-        scale = self._mask_current_scale
-        return ox + point[0] * scale, oy + point[1] * scale
 
-    def _mask_at(self, point: tuple[float, float]) -> int | None:
-        px, py = point
-        for idx in range(len(self._mask_rects) - 1, -1, -1):
-            mask = self._mask_rects[idx]
-            if int(mask.get("page", 0)) != self._mask_page_index:
-                continue
-            if float(mask["x0"]) <= px <= float(mask["x1"]) and float(mask["y0"]) <= py <= float(mask["y1"]):
-                return idx
-        return None
 
-    def _current_page_mask_count(self) -> int:
-        return sum(1 for m in self._mask_rects if int(m.get("page", 0)) == self._mask_page_index)
 
-    def _update_mask_count(self) -> None:
-        page_count = self._current_page_mask_count()
-        total = len(self._mask_rects)
-        self._mask_count_text.set(f"{page_count} masque(s) page · {total} total")
 
     # -- helpers UI -------------------------------------------------------
 
@@ -1074,23 +704,6 @@ class ConfigTab(ctk.CTkFrame):
         slider.set(variable.get())
         slider.pack(side="right", padx=(8, 4))
 
-    def _toolbar_button(self, parent, text: str, command, width: int = 42):
-        p = self._p
-        return ctk.CTkButton(
-            parent,
-            text=text,
-            command=command,
-            fg_color=p["btn_sec_bg"],
-            hover_color=p["card_border"],
-            text_color=p["text"],
-            border_color=p["btn_sec_border"],
-            border_width=1,
-            corner_radius=8,
-            height=32,
-            width=width,
-            font=ui_kit.font(13, "bold"),
-        )
-
     def _rule_row(self, parent, values: tuple[str, str, str, str]) -> None:
         p = self._p
         label, rule_type, target, status = values
diff --git a/tests/unit/test_gui_v6_mask_editor.py b/tests/unit/test_gui_v6_mask_editor.py
new file mode 100644
index 0000000..b619009
--- /dev/null
+++ b/tests/unit/test_gui_v6_mask_editor.py
@@ -0,0 +1,260 @@
+"""Couche logique de l'éditeur de masques en fenêtre dédiée (sans display).
+
+Ces tests valident le modèle pur (rectangles/pages/conversions/templates) qui
+sous-tend `gui_v6/mask_editor_window.py`. La fenêtre Tk elle-même est couverte par
+un smoke headless séparé.
+"""
+
+from __future__ import annotations
+
+import json
+
+import pytest
+
+from gui_v6.mask_editor_model import (
+    ZOOM_MAX,
+    ZOOM_MIN,
+    MaskEditorModel,
+    clamp_page,
+    clamp_zoom,
+    fit_page_zoom,
+    fit_width_zoom,
+    pdf_to_screen,
+    screen_to_pdf,
+)
+
+
+# --- Conversions / clamps ---------------------------------------------------
+
+def test_clamp_zoom_bounds():
+    assert clamp_zoom(0.001) == ZOOM_MIN
+    assert clamp_zoom(999.0) == ZOOM_MAX
+    assert clamp_zoom(1.0) == 1.0
+
+
+def test_clamp_page_bounds():
+    assert clamp_page(-3, 5) == 0
+    assert clamp_page(10, 5) == 4
+    assert clamp_page(2, 5) == 2
+    assert clamp_page(0, 0) == 0  # aucun document
+
+
+def test_screen_pdf_roundtrip_applies_zoom():
+    assert screen_to_pdf(200.0, 100.0, zoom=2.0) == (100.0, 50.0)
+    assert pdf_to_screen(100.0, 50.0, zoom=2.0) == (200.0, 100.0)
+
+
+def test_fit_width_zoom():
+    assert fit_width_zoom(595.0, 1190.0, padding=0.0) == 2.0
+
+
+def test_fit_page_zoom_uses_min_ratio():
+    # ratio largeur = 2.0, ratio hauteur = 1.0 -> on prend le plus petit
+    assert fit_page_zoom(595.0, 842.0, 1190.0, 842.0, padding=0.0) == 1.0
+
+
+# --- Modèle rectangles / pages ---------------------------------------------
+
+def test_add_rect_normalizes_corners():
+    m = MaskEditorModel()
+    r = m.add_rect(page=0, x0=100, y0=80, x1=40, y1=20)
+    assert r is not None
+    assert (r.x0, r.y0, r.x1, r.y1) == (40.0, 20.0, 100.0, 80.0)
+    assert r.page == 0
+    assert m.count_total() == 1
+
+
+def test_add_rect_ignores_tiny_rectangles():
+    m = MaskEditorModel()
+    assert m.add_rect(page=0, x0=10, y0=10, x1=11, y1=11) is None
+    assert m.count_total() == 0
+
+
+def test_rect_at_returns_topmost_then_none():
+    m = MaskEditorModel()
+    a = m.add_rect(0, 0, 0, 100, 100)
+    b = m.add_rect(0, 50, 50, 150, 150)
+    assert m.rect_at(0, 60, 60) is b   # zone de recouvrement -> dernier dessiné
+    assert m.rect_at(0, 10, 10) is a   # seulement dans a
+    assert m.rect_at(0, 500, 500) is None
+    assert m.rect_at(1, 60, 60) is None  # autre page
+
+
+def test_delete_rect():
+    m = MaskEditorModel()
+    a = m.add_rect(0, 0, 0, 50, 50)
+    assert m.delete_rect(a) is True
+    assert m.count_total() == 0
+    assert m.delete_rect(a) is False
+
+
+def test_clear_page_and_clear_all():
+    m = MaskEditorModel()
+    m.add_rect(0, 0, 0, 50, 50)
+    m.add_rect(0, 60, 60, 90, 90)
+    m.add_rect(1, 0, 0, 50, 50)
+    assert m.count_page(0) == 2
+    assert m.clear_page(0) == 2
+    assert m.count_page(0) == 0
+    assert m.count_total() == 1
+    assert m.clear_all() == 1
+    assert m.count_total() == 0
+
+
+def test_set_page_clamps_and_updates_index():
+    m = MaskEditorModel(page_count=3)
+    assert m.set_page(5) == 2
+    assert m.page_index == 2
+    assert m.set_page(-1) == 0
+    assert m.page_index == 0
+
+
+# --- Templates (compat moteur / pdf_mask_designer) --------------------------
+
+def test_payload_shape_and_roundtrip():
+    m = MaskEditorModel(page_count=1, page_sizes=[(595.0, 842.0)], name="demo")
+    m.add_rect(0, 10, 20, 110, 60, label="NOM")
+    payload = m.to_payload()
+    assert payload["version"] == 1
+    assert payload["name"] == "demo"
+    assert payload["page_size"] == {"width": 595.0, "height": 842.0}
+    assert payload["masks"][0] == {
+        "page": 0,
+        "x0": 10.0,
+        "y0": 20.0,
+        "x1": 110.0,
+        "y1": 60.0,
+        "label": "NOM",
+    }
+    # le payload doit survivre à une sérialisation JSON
+    payload2 = json.loads(json.dumps(payload))
+    m2 = MaskEditorModel.from_payload(payload2)
+    assert m2.name == "demo"
+    assert m2.count_total() == 1
+    r = m2.masks_for_page(0)[0]
+    assert (r.x0, r.y0, r.x1, r.y1, r.label) == (10.0, 20.0, 110.0, 60.0, "NOM")
+
+
+def test_payload_is_compatible_with_pdf_mask_designer_template():
+    from pdf_mask_designer import Template
+
+    m = MaskEditorModel(page_count=1, page_sizes=[(595.0, 842.0)], name="demo")
+    m.add_rect(0, 10, 20, 110, 60, label="NOM")
+    tpl = Template.from_dict(m.to_payload())
+    assert tpl.name == "demo"
+    assert tpl.page_size == (595.0, 842.0)
+    assert len(tpl.masks) == 1
+    assert tpl.masks[0].label == "NOM"
+
+
+# --- Smoke headless de la fenêtre Tk (skip si pas de display) ---------------
+
+@pytest.fixture
+def ctk_root():
+    ctk = pytest.importorskip("customtkinter")
+    try:
+        root = ctk.CTk()
+    except Exception as exc:  # pas de display disponible
+        pytest.skip(f"display Tk indisponible: {exc}")
+    root.withdraw()
+    try:
+        yield root
+    finally:
+        try:
+            root.destroy()
+        except Exception:
+            pass
+
+
+def test_window_smoke_scrollbars_add_select_delete_save(ctk_root, tmp_path):
+    from gui_v6.mask_editor_window import MaskEditorWindow
+
+    win = MaskEditorWindow(ctk_root, templates_dir=tmp_path)
+    win.update_idletasks()
+
+    # 1) la fenêtre expose bien deux scrollbars (le manque qui rendait l'éditeur inutilisable)
+    assert win.has_scrollbars()
+
+    # 2) ajout d'un rectangle (sur l'aperçu d'exemple, sans PDF réel)
+    win.model.page_count = 1
+    win.model.page_sizes = [(595.0, 842.0)]
+    rect = win.add_mask_rect_pdf(0, 30, 40, 200, 120, label="NOM")
+    assert rect is not None
+    assert win.model.count_total() == 1
+
+    # 3) sauvegarde du template (JSON) -> relisible et compatible
+    out = win.save_template_to(tmp_path / "demo.json")
+    assert out.exists()
+    reloaded = json.loads(out.read_text(encoding="utf-8"))
+    assert reloaded["masks"][0]["label"] == "NOM"
+
+    # 4) sélection + suppression individuelle
+    win.select_rect(win.model.masks_for_page(0)[0])
+    win.delete_selected()
+    assert win.model.count_total() == 0
+
+    win.destroy()
+
+
+def test_window_smoke_load_template_roundtrip(ctk_root, tmp_path):
+    from gui_v6.mask_editor_window import MaskEditorWindow
+
+    win = MaskEditorWindow(ctk_root, templates_dir=tmp_path)
+    win.model.page_count = 1
+    win.model.page_sizes = [(595.0, 842.0)]
+    win.add_mask_rect_pdf(0, 10, 20, 110, 60, label="ADRESSE")
+    path = win.save_template_to(tmp_path / "rt.yml")
+
+    win.clear_all()
+    assert win.model.count_total() == 0
+
+    win.load_template_path(path)
+    assert win.model.count_total() == 1
+    assert win.model.masks_for_page(0)[0].label == "ADRESSE"
+    win.destroy()
+
+
+def test_config_tab_launches_dedicated_window(ctk_root, tmp_path, monkeypatch):
+    """Garde-fou de recâblage : l'onglet Configuration construit sans l'éditeur
+    encastré et ouvre bien la fenêtre dédiée (avec scrollbars)."""
+    from gui_v6.tabs import tab_config
+
+    monkeypatch.setattr(tab_config, "_app_base_dir", lambda: tmp_path)
+    tab = tab_config.ConfigTab(ctk_root)
+    tab.update_idletasks()
+
+    # plus d'éditeur encastré
+    assert not hasattr(tab, "_mask_canvas")
+
+    tab._open_full_mask_editor()
+    win = tab._mask_editor_window
+    assert win is not None
+    assert win.has_scrollbars()
+
+    # un template sauvé via la fenêtre rafraîchit la sélection côté Réglages
+    win.model.page_count = 1
+    win.model.page_sizes = [(595.0, 842.0)]
+    win.add_mask_rect_pdf(0, 10, 20, 110, 60, label="NOM")
+    saved = win.save_template_to(tmp_path / "config" / "mask_templates" / "depuis_fenetre.json")
+    assert saved.exists()
+    # A14 : sauver depuis la fenêtre active le template comme masque manuel du run
+    assert tab._state.manual_mask_template == saved
+
+    win.destroy()
+    tab.destroy()
+
+
+def test_window_loads_initial_template(ctk_root, tmp_path):
+    """B5 / continuité : un template fourni à l'ouverture est chargé (l'utilisateur
+    reprend son travail au lieu de repartir d'une page vierge)."""
+    from gui_v6.mask_editor_window import MaskEditorWindow
+
+    seed = MaskEditorModel(page_count=1, page_sizes=[(595.0, 842.0)], name="seed")
+    seed.add_rect(0, 5, 5, 90, 40, label="IPP")
+    path = tmp_path / "seed.json"
+    path.write_text(json.dumps(seed.to_payload(), ensure_ascii=False), encoding="utf-8")
+
+    win = MaskEditorWindow(ctk_root, templates_dir=tmp_path, initial_template=path)
+    assert win.model.count_total() == 1
+    assert win.model.masks_for_page(0)[0].label == "IPP"
+    win.destroy()