diff --git a/script/todo/todo.py b/script/todo/todo.py
index 9cb641f..af3c5f2 100755
--- a/script/todo/todo.py
+++ b/script/todo/todo.py
@@ -129,6 +129,7 @@ class TODO:
 [2] {t("Install")}
 [3] {t("Question")}
 [4] {t("Fork - Open TODO in a new tab")}
+[5] {t("Navigation telemetry (TUI)")}
 [0] {t("Quit")}
 """
         while True:
@@ -160,6 +161,8 @@ class TODO:
                 # )
                 cmd = "make todo"
                 self.execute.exec_command_live(cmd, source_erplibre=True)
+            elif status == "5":
+                self._todo_telemetry_tui()
             # elif status == "3" or status == "install":
             #     print("install")
             else:
@@ -565,8 +568,24 @@ class TODO:
         header = ""
         if crumbs:
             header = "📍 " + " › ".join(crumbs) + "\n"
+            # Télémétrie de navigation (best-effort, ne casse jamais le menu).
+            try:
+                from script.todo import todo_telemetry
+
+                todo_telemetry.record(" › ".join(crumbs))
+            except Exception:
+                pass
         return header + t("Command:")
 
+    def _todo_telemetry_tui(self):
+        """Ouvre le TUI arborescent de télémétrie de navigation."""
+        try:
+            from script.todo.todo_telemetry import run_tui
+
+            run_tui()
+        except ImportError:
+            print(t("Install textual for the telemetry TUI (pip)."))
+
     def fill_help_info(self, choices):
         # Une entrée {"section": "..."} affiche un titre de section SANS
         # consommer de numéro : la numérotation reste continue sur les vraies
diff --git a/script/todo/todo_i18n.py b/script/todo/todo_i18n.py
index 3c9013e..b967865 100644
--- a/script/todo/todo_i18n.py
+++ b/script/todo/todo_i18n.py
@@ -1282,6 +1282,30 @@ TRANSLATIONS = {
         "fr": "suivi d'installation",
         "en": "install monitoring",
     },
+    "Navigation telemetry (TUI)": {
+        "fr": "Télémétrie de navigation (TUI)",
+        "en": "Navigation telemetry (TUI)",
+    },
+    "TODO navigation telemetry": {
+        "fr": "TODO — télémétrie de navigation",
+        "en": "TODO navigation telemetry",
+    },
+    "navigations": {
+        "fr": "navigations",
+        "en": "navigations",
+    },
+    "menus": {
+        "fr": "menus",
+        "en": "menus",
+    },
+    "Telemetry reset.": {
+        "fr": "Télémétrie réinitialisée.",
+        "en": "Telemetry reset.",
+    },
+    "Install textual for the telemetry TUI (pip).": {
+        "fr": "Installez textual pour le TUI de télémétrie (pip).",
+        "en": "Install textual for the telemetry TUI (pip).",
+    },
     "Resize a VM disk": {
         "fr": "Redimensionner le disque d'une VM",
         "en": "Resize a VM disk",
diff --git a/script/todo/todo_telemetry.py b/script/todo/todo_telemetry.py
new file mode 100644
index 0000000..bbf05c5
--- /dev/null
+++ b/script/todo/todo_telemetry.py
@@ -0,0 +1,148 @@
+#!/usr/bin/env python3
+# © 2021-2026 TechnoLibre (http://www.technolibre.ca)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl)
+"""Télémétrie de navigation du CLI TODO.
+
+Enregistre les fils d'Ariane visités (« A › B › C » -> compteur) et affiche un
+DIAGRAMME arborescent des fonctionnalités dans un TUI Textual, trié par usage.
+
+- record(path) : appelé par Todo._menu_header à chaque affichage de menu ; on
+  dédupe les ré-affichages consécutifs pour ne compter que les TRANSITIONS.
+- run_tui() : ouvre l'arbre de navigation (compteurs par menu).
+"""
+from __future__ import annotations
+
+import json
+import os
+import time
+from pathlib import Path
+
+try:
+    from script.todo.todo_i18n import t
+except Exception:  # pragma: no cover - repli si i18n indisponible
+
+    def t(key: str) -> str:
+        return key
+
+
+# Dernier chemin enregistré : évite de recompter chaque ré-affichage du même
+# menu (une commande qui revient au menu ne compte pas comme une navigation).
+_LAST = [None]
+
+
+def _path() -> Path:
+    base = Path(os.path.expanduser("~/.erplibre"))
+    base.mkdir(parents=True, exist_ok=True)
+    return base / "todo_telemetry.json"
+
+
+def load() -> dict:
+    try:
+        return json.loads(_path().read_text())
+    except (OSError, ValueError):
+        return {"paths": {}}
+
+
+def _save(data: dict) -> None:
+    try:
+        _path().write_text(json.dumps(data, ensure_ascii=False, indent=2))
+    except OSError:
+        pass
+
+
+def record(path: str) -> None:
+    """Incrémente le compteur du menu `path`. Best-effort : ne lève jamais
+    (la télémétrie ne doit jamais casser la navigation)."""
+    if not path or path == _LAST[0]:
+        return
+    _LAST[0] = path
+    try:
+        data = load()
+        paths = data.setdefault("paths", {})
+        paths[path] = paths.get(path, 0) + 1
+        data["updated"] = int(time.time())
+        _save(data)
+    except Exception:
+        pass
+
+
+def reset() -> None:
+    _save({"paths": {}})
+
+
+def _nested(paths: dict) -> dict:
+    """{« A › B › C »: count} -> arbre {nom: {'count', 'children'}}. Chaque
+    menu enregistre son propre chemin, donc chaque nœud a son compteur."""
+    root: dict = {}
+    for path, count in paths.items():
+        cur = root
+        parts = path.split(" › ")
+        for i, name in enumerate(parts):
+            node = cur.setdefault(name, {"count": 0, "children": {}})
+            if i == len(parts) - 1:
+                node["count"] += count
+            cur = node["children"]
+    return root
+
+
+def run_tui(run_app: bool = True):
+    """Ouvre le TUI arborescent. `run_app=False` renvoie l'app (tests)."""
+    from textual.app import App, ComposeResult
+    from textual.widgets import Footer, Header, Static, Tree
+
+    class Telemetry(App):
+        CSS = """
+        #summary { height: 1; color: $text-muted; }
+        Tree { border: solid $accent; }
+        """
+        BINDINGS = [
+            ("q", "quit", "Quitter"),
+            ("r", "reset", "Réinitialiser"),
+            ("e", "expand_all", "Tout déplier"),
+        ]
+
+        def compose(self) -> ComposeResult:
+            yield Header(show_clock=True)
+            yield Static("", id="summary")
+            yield Tree("📍 TODO", id="nav")
+            yield Footer()
+
+        def on_mount(self):
+            self.title = t("TODO navigation telemetry")
+            self._populate()
+
+        def _populate(self):
+            data = load()
+            paths = data.get("paths", {})
+            total = sum(paths.values())
+            self.query_one("#summary", Static).update(
+                f"  {total} {t('navigations')} · {len(paths)} {t('menus')}"
+            )
+            tree = self.query_one("#nav", Tree)
+            tree.clear()
+            nested = _nested(paths)
+            todo = nested.get("TODO", {"count": 0, "children": nested})
+            tree.root.set_label(f"📍 TODO  ({todo['count']})")
+            self._add(tree.root, todo["children"])
+            tree.root.expand()
+
+        def _add(self, tnode, children):
+            # Tri par visites décroissantes : les plus utilisés en tête.
+            for name, node in sorted(
+                children.items(), key=lambda kv: -kv[1]["count"]
+            ):
+                child = tnode.add(f"{name}  ({node['count']})", expand=True)
+                self._add(child, node["children"])
+
+        def action_reset(self):
+            reset()
+            self._populate()
+            self.notify(t("Telemetry reset."))
+
+        def action_expand_all(self):
+            self.query_one("#nav", Tree).root.expand_all()
+
+    app = Telemetry()
+    if run_app:
+        app.run()
+    return app