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+# Panneau admin interne (`/admin`) Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Build an internal admin panel at `/admin` for support/debugging — list users, view a user's full subscription history, correct a subscription status manually, all restricted to a single `ADMIN_EMAIL` and logged to an `admin_actions` audit table also viewable at `/admin/journal`.
+
+**Architecture:** Dash pages (`register_page`) for reads, one Flask blueprint (`src/admin/routes.py`) for the single write action, both guarded by a shared `is_admin()` check. Mirrors the existing `/compte/*` (Dash) + `/auth/*` (Flask blueprint) split.
+
+**Tech Stack:** Dash 3.4, dash-bootstrap-components, Flask, flask-login, flask-wtf (CSRFProtect, already global), sqlite3 (raw, no ORM).
+
+**Spec:** `docs/superpowers/specs/2026-07-03-admin-ui-design.md`
+
+## Global Constraints
+
+- Valid subscription statuses (from `src/subscriptions/webhooks.py:map_subscription`): `active`, `trial`, `cancelled`, `expired`, `pending`.
+- `ADMIN_EMAIL` is a single email, compared case-insensitively. No multi-admin support in this lot.
+- Access guard (`is_admin()` false) always returns/aborts **404**, never a redirect — applies uniformly to anonymous and authenticated-non-admin.
+- CSRF protection is already global (`CSRFProtect(app)`, `src/auth/setup.py:53`) — no custom CSRF code, just the existing hidden `csrf_token` input pattern.
+- `dash_table.DataTable` uses `filter_action="native"`, `sort_action="native"`, `page_action="native"`, `page_size=20` everywhere in this feature (no custom/server-side filtering).
+- Run tests with `uv run pytest` (venv activation via the Bash tool doesn't reliably update `PATH` in this environment).
+- `sqlite3` connections here are autocommit (`isolation_level=None`, see `src/auth/db.py:56`) — new DB functions must NOT call `conn.commit()`, matching every existing function in `src/auth/db.py` and `src/subscriptions/db.py`.
+
+---
+
+### Task 1: `list_users()` in the auth DB layer
+
+**Files:**
+
+- Modify: `src/auth/db.py` (add after `get_user_by_id`, around line 148)
+- Test: `tests/auth/test_db.py`
+
+**Interfaces:**
+
+- Produces: `list_users(limit: int = 1000) -> list[sqlite3.Row]` — all users, most recently created first, capped at `limit`.
+
+- [ ] **Step 1: Write the failing test**
+
+Add to `tests/auth/test_db.py`:
+
+```python
+def test_list_users_orders_by_created_at_desc(users_db_path):
+    from src.auth import db
+
+    db.init_schema()
+    db.create_user("first@ex.fr", "hash")
+    db.create_user("second@ex.fr", "hash")
+
+    rows = db.list_users()
+
+    assert [r["email"] for r in rows] == ["second@ex.fr", "first@ex.fr"]
+
+
+def test_list_users_respects_limit(users_db_path):
+    from src.auth import db
+
+    db.init_schema()
+    for i in range(3):
+        db.create_user(f"user{i}@ex.fr", "hash")
+
+    rows = db.list_users(limit=2)
+
+    assert len(rows) == 2
+```
+
+- [ ] **Step 2: Run tests to verify they fail**
+
+Run: `uv run pytest tests/auth/test_db.py -k list_users -v`
+Expected: FAIL with `AttributeError: module 'src.auth.db' has no attribute 'list_users'`
+
+- [ ] **Step 3: Implement `list_users`**
+
+In `src/auth/db.py`, immediately after `get_user_by_id` (line 148):
+
+```python
+def list_users(limit: int = 1000) -> list[sqlite3.Row]:
+    return (
+        get_conn()
+        .execute("SELECT * FROM users ORDER BY created_at DESC LIMIT ?", (limit,))
+        .fetchall()
+    )
+```
+
+- [ ] **Step 4: Run tests to verify they pass**
+
+Run: `uv run pytest tests/auth/test_db.py -k list_users -v`
+Expected: 2 passed
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/auth/db.py tests/auth/test_db.py
+git commit -m "feat(admin): add list_users() to auth DB layer"
+```
+
+---
+
+### Task 2: Subscription DB additions — history, status override, statuses constant
+
+**Files:**
+
+- Modify: `src/subscriptions/db.py` (add after `get_current`, around line 124, and after `_get_state`, around line 210)
+- Test: `tests/subscriptions/test_db.py`
+
+**Interfaces:**
+
+- Produces: `SUBSCRIPTION_STATUSES: tuple[str, ...]` = `("active", "trial", "cancelled", "expired", "pending")`
+- Produces: `list_by_user(user_id: int) -> list[sqlite3.Row]` — all subscriptions for a user, most recent (`id DESC`) first.
+- Produces: `set_status(subscription_id: int, status: str) -> None` — overwrites `status` and `updated_at`.
+- Produces: `get_subscriber_state(user_id: int) -> sqlite3.Row | None` — public wrapper around the existing private `_get_state`.
+- Consumes: `get_conn()` from `src.auth.db` (already imported), `_now()` (already defined in this module), `create_pending(user_id, customer_handle, plan, prix_ht=None) -> (handle, subscription_id)` (already exists, used by the test).
+
+- [ ] **Step 1: Write the failing tests**
+
+Add to `tests/subscriptions/test_db.py`:
+
+```python
+def test_list_by_user_returns_most_recent_first(users_db_path):
+    uid = _make_user()
+    db.init_schema()
+    _handle1, sub_id1 = db.create_pending(uid, "cust-1", "simple")
+    _handle2, sub_id2 = db.create_pending(uid, "cust-1", "soutien")
+
+    rows = db.list_by_user(uid)
+
+    assert [r["id"] for r in rows] == [sub_id2, sub_id1]
+
+
+def test_set_status_updates_status(users_db_path):
+    uid = _make_user()
+    db.init_schema()
+    _handle, sub_id = db.create_pending(uid, "cust-1", "simple")
+
+    db.set_status(sub_id, "active")
+
+    row = db.get_current(uid)
+    assert row["status"] == "active"
+
+
+def test_get_subscriber_state_returns_row_after_create_pending(users_db_path):
+    uid = _make_user()
+    db.init_schema()
+    db.create_pending(uid, "cust-1", "simple")
+
+    state = db.get_subscriber_state(uid)
+
+    assert state is not None
+    assert state["user_id"] == uid
+
+
+def test_get_subscriber_state_returns_none_for_unknown_user(users_db_path):
+    db.init_schema()
+    assert db.get_subscriber_state(999999) is None
+
+
+def test_subscription_statuses_constant():
+    assert db.SUBSCRIPTION_STATUSES == (
+        "active",
+        "trial",
+        "cancelled",
+        "expired",
+        "pending",
+    )
+```
+
+(`_make_user` and the `users_db_path` fixture already exist in this file/its `conftest.py` — see `tests/subscriptions/test_db.py:16`.)
+
+- [ ] **Step 2: Run tests to verify they fail**
+
+Run: `uv run pytest tests/subscriptions/test_db.py -k "list_by_user or set_status or get_subscriber_state or subscription_statuses" -v`
+Expected: FAIL with `AttributeError` for each missing symbol
+
+- [ ] **Step 3: Implement the additions**
+
+In `src/subscriptions/db.py`, immediately after `get_current` (after line 123, before `get_by_handle`):
+
+```python
+SUBSCRIPTION_STATUSES = ("active", "trial", "cancelled", "expired", "pending")
+
+
+def list_by_user(user_id: int) -> list[sqlite3.Row]:
+    return (
+        get_conn()
+        .execute(
+            "SELECT * FROM subscriptions WHERE user_id = ? ORDER BY id DESC",
+            (user_id,),
+        )
+        .fetchall()
+    )
+
+
+def set_status(subscription_id: int, status: str) -> None:
+    get_conn().execute(
+        "UPDATE subscriptions SET status = ?, updated_at = ? WHERE id = ?",
+        (status, _now(), subscription_id),
+    )
+```
+
+Then, immediately after `_get_state` (after line 210, before `freeze_votes_cursor`):
+
+```python
+def get_subscriber_state(user_id: int) -> sqlite3.Row | None:
+    return _get_state(user_id)
+```
+
+- [ ] **Step 4: Run tests to verify they pass**
+
+Run: `uv run pytest tests/subscriptions/test_db.py -k "list_by_user or set_status or get_subscriber_state or subscription_statuses" -v`
+Expected: 5 passed
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/subscriptions/db.py tests/subscriptions/test_db.py
+git commit -m "feat(admin): add subscription history, status override, and statuses constant"
+```
+
+---
+
+### Task 3: Audit log table + `src/admin/db.py`
+
+**Files:**
+
+- Modify: `src/migrations.py` (append to `_MIGRATIONS`)
+- Create: `src/admin/__init__.py` (empty)
+- Create: `src/admin/db.py`
+- Create: `tests/admin/__init__.py` (empty)
+- Create: `tests/admin/conftest.py`
+- Create: `tests/admin/test_db.py`
+
+**Interfaces:**
+
+- Produces: table `admin_actions(id, admin_email, action, target_user_id, details, created_at)`.
+- Produces: `log_action(admin_email: str, action: str, target_user_id: int | None, details: str | None) -> None`
+- Produces: `list_actions(limit: int = 200) -> list[sqlite3.Row]` — most recent (`id DESC`) first.
+- Consumes: `get_conn()` from `src.auth.db`, `apply_pending()` from `src.migrations`.
+
+- [ ] **Step 1: Add the migration**
+
+In `src/migrations.py`, append to `_MIGRATIONS` (after the `0005_...` entry):
+
+```python
+    (
+        "0006_create_admin_actions",
+        "CREATE TABLE IF NOT EXISTS admin_actions ("
+        "id INTEGER PRIMARY KEY AUTOINCREMENT, "
+        "admin_email TEXT NOT NULL, "
+        "action TEXT NOT NULL, "
+        "target_user_id INTEGER, "
+        "details TEXT, "
+        "created_at TEXT NOT NULL)",
+    ),
+```
+
+- [ ] **Step 2: Create the test conftest**
+
+Create `tests/admin/__init__.py` (empty file).
+
+Create `tests/admin/conftest.py`:
+
+```python
+import pytest
+
+
+@pytest.fixture
+def users_db_path(monkeypatch, tmp_path):
+    from src.auth.db import reset_conn_for_tests
+
+    db_path = tmp_path / "users.test.sqlite"
+    monkeypatch.setenv("USERS_DB_PATH", str(db_path))
+    reset_conn_for_tests()
+    yield db_path
+    reset_conn_for_tests()
+```
+
+- [ ] **Step 3: Write the failing test**
+
+Create `tests/admin/test_db.py`:
+
+```python
+from src.admin import db as admin_db
+from src.auth.db import init_schema
+from src.migrations import apply_pending
+
+
+def _setup():
+    init_schema()
+    apply_pending()
+
+
+def test_log_action_then_list_actions_returns_it(users_db_path):
+    _setup()
+
+    admin_db.log_action("admin@ex.fr", "subscription_status_change", 42, "active → cancelled")
+
+    rows = admin_db.list_actions()
+    assert len(rows) == 1
+    assert rows[0]["admin_email"] == "admin@ex.fr"
+    assert rows[0]["action"] == "subscription_status_change"
+    assert rows[0]["target_user_id"] == 42
+    assert rows[0]["details"] == "active → cancelled"
+
+
+def test_list_actions_most_recent_first(users_db_path):
+    _setup()
+
+    admin_db.log_action("admin@ex.fr", "action_one", None, None)
+    admin_db.log_action("admin@ex.fr", "action_two", None, None)
+
+    rows = admin_db.list_actions()
+    assert [r["action"] for r in rows] == ["action_two", "action_one"]
+
+
+def test_list_actions_respects_limit(users_db_path):
+    _setup()
+
+    for i in range(3):
+        admin_db.log_action("admin@ex.fr", f"action_{i}", None, None)
+
+    rows = admin_db.list_actions(limit=2)
+    assert len(rows) == 2
+```
+
+- [ ] **Step 4: Run test to verify it fails**
+
+Run: `uv run pytest tests/admin/test_db.py -v`
+Expected: FAIL with `ModuleNotFoundError: No module named 'src.admin'`
+
+- [ ] **Step 5: Implement `src/admin/db.py`**
+
+Create `src/admin/__init__.py` (empty file).
+
+Create `src/admin/db.py`:
+
+```python
+import sqlite3
+from datetime import datetime, timezone
+
+from src.auth.db import get_conn
+
+
+def _now() -> str:
+    return datetime.now(timezone.utc).isoformat()
+
+
+def log_action(
+    admin_email: str, action: str, target_user_id: int | None, details: str | None
+) -> None:
+    get_conn().execute(
+        "INSERT INTO admin_actions (admin_email, action, target_user_id, details, created_at) "
+        "VALUES (?, ?, ?, ?, ?)",
+        (admin_email, action, target_user_id, details, _now()),
+    )
+
+
+def list_actions(limit: int = 200) -> list[sqlite3.Row]:
+    return (
+        get_conn()
+        .execute("SELECT * FROM admin_actions ORDER BY id DESC LIMIT ?", (limit,))
+        .fetchall()
+    )
+```
+
+- [ ] **Step 6: Run tests to verify they pass**
+
+Run: `uv run pytest tests/admin/test_db.py -v`
+Expected: 3 passed
+
+- [ ] **Step 7: Commit**
+
+```bash
+git add src/migrations.py src/admin/__init__.py src/admin/db.py tests/admin/__init__.py tests/admin/conftest.py tests/admin/test_db.py
+git commit -m "feat(admin): add admin_actions audit table and log/list functions"
+```
+
+---
+
+### Task 4: Access guard — `is_admin()`
+
+**Files:**
+
+- Create: `src/admin/guard.py`
+- Create: `tests/admin/test_guard.py`
+
+**Interfaces:**
+
+- Produces: `is_admin() -> bool` — `True` only if `ADMIN_EMAIL` is set, `current_user.is_authenticated`, and `current_user.email` matches case-insensitively.
+
+- [ ] **Step 1: Write the failing tests**
+
+Create `tests/admin/test_guard.py`:
+
+```python
+from unittest.mock import patch
+
+from src.admin import guard
+
+
+def _fake_user(email: str, authenticated: bool = True):
+    user = type("U", (), {})()
+    user.is_authenticated = authenticated
+    user.email = email
+    return user
+
+
+def test_is_admin_true_for_matching_email(monkeypatch):
+    monkeypatch.setenv("ADMIN_EMAIL", "admin@ex.fr")
+    with patch("src.admin.guard.current_user", _fake_user("admin@ex.fr")):
+        assert guard.is_admin() is True
+
+
+def test_is_admin_true_case_insensitive(monkeypatch):
+    monkeypatch.setenv("ADMIN_EMAIL", "Admin@Ex.fr")
+    with patch("src.admin.guard.current_user", _fake_user("admin@ex.fr")):
+        assert guard.is_admin() is True
+
+
+def test_is_admin_false_for_different_email(monkeypatch):
+    monkeypatch.setenv("ADMIN_EMAIL", "admin@ex.fr")
+    with patch("src.admin.guard.current_user", _fake_user("someone@ex.fr")):
+        assert guard.is_admin() is False
+
+
+def test_is_admin_false_for_anonymous(monkeypatch):
+    monkeypatch.setenv("ADMIN_EMAIL", "admin@ex.fr")
+    with patch(
+        "src.admin.guard.current_user", _fake_user("admin@ex.fr", authenticated=False)
+    ):
+        assert guard.is_admin() is False
+
+
+def test_is_admin_false_when_admin_email_unset(monkeypatch):
+    monkeypatch.delenv("ADMIN_EMAIL", raising=False)
+    with patch("src.admin.guard.current_user", _fake_user("admin@ex.fr")):
+        assert guard.is_admin() is False
+```
+
+- [ ] **Step 2: Run tests to verify they fail**
+
+Run: `uv run pytest tests/admin/test_guard.py -v`
+Expected: FAIL with `ModuleNotFoundError: No module named 'src.admin.guard'`
+
+- [ ] **Step 3: Implement `src/admin/guard.py`**
+
+```python
+import os
+
+from flask_login import current_user
+
+
+def is_admin() -> bool:
+    admin_email = os.getenv("ADMIN_EMAIL")
+    return bool(
+        admin_email
+        and current_user.is_authenticated
+        and current_user.email.lower() == admin_email.lower()
+    )
+```
+
+- [ ] **Step 4: Run tests to verify they pass**
+
+Run: `uv run pytest tests/admin/test_guard.py -v`
+Expected: 5 passed
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/admin/guard.py tests/admin/test_guard.py
+git commit -m "feat(admin): add is_admin() access guard"
+```
+
+---
+
+### Task 5: Mutation route — `POST /admin/actions/subscription-status`
+
+**Files:**
+
+- Create: `src/admin/routes.py`
+- Modify: `src/auth/setup.py` (register blueprint)
+- Modify: `.template.env` (add `ADMIN_EMAIL`)
+- Modify: `tests/admin/conftest.py` (add Flask app/client fixtures)
+- Create: `tests/admin/test_routes.py`
+
+**Interfaces:**
+
+- Produces: Flask blueprint `admin_bp` (`url_prefix="/admin/actions"`), route `POST /subscription-status`.
+- Consumes: `is_admin()` (Task 4), `SUBSCRIPTION_STATUSES`, `get_current`, `set_status` (Task 2), `log_action` (Task 3).
+
+- [ ] **Step 1: Extend the test conftest**
+
+In `tests/admin/conftest.py`, add (after the existing `users_db_path` fixture):
+
+```python
+@pytest.fixture
+def admin_app(users_db_path, monkeypatch):
+    from flask import Flask
+
+    from src.auth.setup import init_auth
+    from src.subscriptions.setup import init_subscriptions
+
+    monkeypatch.setenv("SECRET_KEY", "test-secret-key")
+    monkeypatch.setenv("APP_BASE_URL", "http://localhost:8050")
+    monkeypatch.setenv("FRISBII_PLAN_SIMPLE", "plan_simple")
+    monkeypatch.setenv("FRISBII_PLAN_SOUTIEN", "plan_soutien")
+    monkeypatch.setenv("FRISBII_WEBHOOK_SECRET", "s3cr3t")
+    flask_app = Flask(__name__)
+    flask_app.config["WTF_CSRF_ENABLED"] = False
+    init_auth(flask_app)
+    init_subscriptions(flask_app)
+    return flask_app
+
+
+@pytest.fixture
+def admin_client(admin_app):
+    return admin_app.test_client()
+
+
+@pytest.fixture
+def logged_in_admin_client(admin_app, monkeypatch):
+    from src.auth import db as auth_db
+
+    monkeypatch.setenv("ADMIN_EMAIL", "admin@ex.fr")
+    uid = auth_db.create_user("admin@ex.fr", "hash")
+    auth_db.set_email_verified(uid)
+    client = admin_app.test_client()
+    with client.session_transaction() as sess:
+        sess["_user_id"] = str(uid)
+        sess["_fresh"] = True
+    return client, uid
+```
+
+This mirrors `tests/subscriptions/conftest.py:62-106` (`sub_app`/`logged_in_client`).
+
+- [ ] **Step 2: Write the failing tests**
+
+Create `tests/admin/test_routes.py`:
+
+```python
+from src.auth import db as auth_db
+from src.subscriptions import db as sub_db
+
+
+def _make_target_with_subscription():
+    uid = auth_db.create_user("target@ex.fr", "hash")
+    _handle, sub_id = sub_db.create_pending(uid, "cust-1", "simple")
+    return uid, sub_id
+
+
+def test_subscription_status_requires_admin(admin_client):
+    resp = admin_client.post(
+        "/admin/actions/subscription-status",
+        data={"user_id": "1", "subscription_id": "1", "status": "active"},
+    )
+    assert resp.status_code == 404
+
+
+def test_subscription_status_rejects_invalid_status(logged_in_admin_client):
+    client, _admin_uid = logged_in_admin_client
+    uid, sub_id = _make_target_with_subscription()
+
+    resp = client.post(
+        "/admin/actions/subscription-status",
+        data={"user_id": str(uid), "subscription_id": str(sub_id), "status": "bogus"},
+    )
+
+    assert resp.status_code == 302
+    assert resp.headers["Location"] == f"/admin/user/{uid}?error=invalid_status"
+    assert sub_db.get_current(uid)["status"] == "pending"
+
+
+def test_subscription_status_rejects_mismatched_subscription(logged_in_admin_client):
+    client, _admin_uid = logged_in_admin_client
+    uid, _sub_id = _make_target_with_subscription()
+    other_uid, other_sub_id = _make_target_with_subscription()
+
+    resp = client.post(
+        "/admin/actions/subscription-status",
+        data={
+            "user_id": str(uid),
+            "subscription_id": str(other_sub_id),
+            "status": "active",
+        },
+    )
+
+    assert resp.status_code == 302
+    assert resp.headers["Location"] == f"/admin/user/{uid}?error=invalid_status"
+    assert sub_db.get_current(other_uid)["status"] == "pending"
+
+
+def test_subscription_status_success_updates_and_logs(logged_in_admin_client):
+    from src.admin.db import list_actions
+
+    client, _admin_uid = logged_in_admin_client
+    uid, sub_id = _make_target_with_subscription()
+
+    resp = client.post(
+        "/admin/actions/subscription-status",
+        data={"user_id": str(uid), "subscription_id": str(sub_id), "status": "active"},
+    )
+
+    assert resp.status_code == 302
+    assert resp.headers["Location"] == f"/admin/user/{uid}?status_changed=1"
+    assert sub_db.get_current(uid)["status"] == "active"
+
+    actions = list_actions()
+    assert len(actions) == 1
+    assert actions[0]["action"] == "subscription_status_change"
+    assert actions[0]["target_user_id"] == uid
+    assert actions[0]["details"] == "pending → active"
+    assert actions[0]["admin_email"] == "admin@ex.fr"
+```
+
+- [ ] **Step 3: Run tests to verify they fail**
+
+Run: `uv run pytest tests/admin/test_routes.py -v`
+Expected: FAIL — `admin_client`/`logged_in_admin_client` fixtures raise `ModuleNotFoundError: No module named 'src.admin.routes'` (via `init_auth` once it tries to import it in Step 5) or `404`/`ImportError` depending on order; before Step 5, `test_subscription_status_requires_admin` will fail with a connection/404-mismatch since the blueprint doesn't exist yet (real 404 from Flask's default routing, not from `is_admin()` — acceptable coincidence, but the other three tests will fail).
+
+- [ ] **Step 4: Implement `src/admin/routes.py`**
+
+```python
+from flask import Blueprint, abort, redirect, request
+from flask_login import current_user
+
+from src.admin.db import log_action
+from src.admin.guard import is_admin
+from src.subscriptions.db import SUBSCRIPTION_STATUSES, get_current, set_status
+
+admin_bp = Blueprint("admin", __name__, url_prefix="/admin/actions")
+
+
+@admin_bp.before_request
+def _require_admin():
+    if not is_admin():
+        abort(404)
+
+
+@admin_bp.route("/subscription-status", methods=["POST"])
+def subscription_status():
+    user_id = request.form.get("user_id", type=int)
+    subscription_id = request.form.get("subscription_id", type=int)
+    status = request.form.get("status", "")
+
+    if user_id is None or subscription_id is None:
+        abort(400)
+
+    current = get_current(user_id)
+    if (
+        status not in SUBSCRIPTION_STATUSES
+        or current is None
+        or current["id"] != subscription_id
+    ):
+        return redirect(f"/admin/user/{user_id}?error=invalid_status")
+
+    old_status = current["status"]
+    set_status(subscription_id, status)
+    log_action(
+        current_user.email,
+        "subscription_status_change",
+        user_id,
+        f"{old_status} → {status}",
+    )
+    return redirect(f"/admin/user/{user_id}?status_changed=1")
+```
+
+- [ ] **Step 5: Register the blueprint**
+
+In `src/auth/setup.py`, immediately after `app.register_blueprint(auth_bp)` (currently the line right after the `from src.auth.routes import auth_bp` block):
+
+```python
+    from src.auth.routes import auth_bp
+
+    app.register_blueprint(auth_bp)
+
+    from src.admin.routes import admin_bp
+
+    app.register_blueprint(admin_bp)
+```
+
+- [ ] **Step 6: Add `ADMIN_EMAIL` to `.template.env`**
+
+In `.template.env`, add a new section after the "Comptes utilisateurs" block (after `APP_BASE_URL=http://localhost:8050`):
+
+```
+# Panneau admin interne (accès à /admin, protégé par cette adresse)
+ADMIN_EMAIL=
+```
+
+- [ ] **Step 7: Run tests to verify they pass**
+
+Run: `uv run pytest tests/admin/test_routes.py -v`
+Expected: 4 passed
+
+- [ ] **Step 8: Commit**
+
+```bash
+git add src/admin/routes.py src/auth/setup.py .template.env tests/admin/conftest.py tests/admin/test_routes.py
+git commit -m "feat(admin): add subscription-status mutation route"
+```
+
+---
+
+### Task 6: Shared page chrome + `/admin` list page
+
+**Files:**
+
+- Create: `src/pages/admin/__init__.py` (empty)
+- Create: `src/pages/admin/_shell.py`
+- Create: `src/pages/admin/liste.py`
+
+**Interfaces:**
+
+- Produces: `not_admin() -> Component`, `admin_nav(active: str) -> Component` (in `_shell.py`), reused by Tasks 7 and 8.
+- Consumes: `is_admin()` (Task 4), `list_users()` (Task 1), `get_current()` (existing).
+
+- [ ] **Step 1: Create the package and shared shell**
+
+Create `src/pages/admin/__init__.py` (empty file).
+
+Create `src/pages/admin/_shell.py`:
+
+```python
+import dash_bootstrap_components as dbc
+from dash import html
+
+
+def not_admin():
+    return html.Div(
+        html.H2("404", id="admin-404-heading"), className="py-5 text-center"
+    )
+
+
+def admin_nav(active: str):
+    return dbc.Nav(
+        [
+            dbc.NavLink("Utilisateurs", href="/admin", active=(active == "liste")),
+            dbc.NavLink(
+                "Journal", href="/admin/journal", active=(active == "journal")
+            ),
+        ],
+        pills=True,
+        class_name="mb-4",
+    )
+```
+
+(`html.H2` here, not `H1` — the navbar already renders a global `<h1>colibre</h1>` logo on every page, see `src/app.py:221`; a second `<h1>` would make text-based Selenium assertions ambiguous.)
+
+- [ ] **Step 2: Create the list page**
+
+Create `src/pages/admin/liste.py`:
+
+```python
+import dash_bootstrap_components as dbc
+from dash import dash_table, html, register_page
+
+from src.admin.guard import is_admin
+from src.auth.db import list_users
+from src.pages.admin._shell import admin_nav, not_admin
+from src.subscriptions.db import get_current
+
+register_page(
+    __name__,
+    path="/admin",
+    title="Panneau admin | colibre",
+    name="Admin",
+    description="Panneau d'administration interne.",
+)
+
+
+def _rows():
+    rows = []
+    for user in list_users():
+        sub = get_current(user["id"])
+        rows.append(
+            {
+                "email": user["email"],
+                "vérifié": "oui" if user["email_verified"] else "non",
+                "plan": sub["plan"] if sub else "",
+                "statut": sub["status"] if sub else "",
+                "créé le": user["created_at"],
+                "voir": f"[Voir](/admin/user/{user['id']})",
+            }
+        )
+    return rows
+
+
+def layout(**_):
+    if not is_admin():
+        return not_admin()
+    return dbc.Container(
+        [
+            html.H2("Panneau admin"),
+            admin_nav("liste"),
+            dash_table.DataTable(
+                id="admin-users-table",
+                columns=[
+                    {"name": "Email", "id": "email"},
+                    {"name": "Vérifié", "id": "vérifié"},
+                    {"name": "Plan", "id": "plan"},
+                    {"name": "Statut", "id": "statut"},
+                    {"name": "Créé le", "id": "créé le"},
+                    {"name": "", "id": "voir", "presentation": "markdown"},
+                ],
+                data=_rows(),
+                filter_action="native",
+                sort_action="native",
+                page_action="native",
+                page_size=20,
+                markdown_options={"link_target": "_self"},
+            ),
+        ],
+        fluid=True,
+        className="py-4",
+    )
+```
+
+- [ ] **Step 3: Sanity-check the layout renders without a browser**
+
+Run:
+
+```bash
+uv run python -c "
+import os
+os.environ.setdefault('USERS_DB_PATH', 'tests/users.test.sqlite')
+os.environ.setdefault('SECRET_KEY', 'x')
+os.environ['ADMIN_EMAIL'] = 'admin@ex.fr'
+from unittest.mock import patch
+from flask import Flask
+from src.auth.setup import init_auth
+app = Flask(__name__)
+app.config['WTF_CSRF_ENABLED'] = False
+init_auth(app)
+with app.test_request_context():
+    import src.pages.admin.liste as liste
+    admin = type('U', (), {'is_authenticated': True, 'email': 'admin@ex.fr'})()
+    with patch('src.admin.guard.current_user', admin):
+        component = liste.layout()
+    print(type(component))
+"
+```
+
+Expected: prints `<class 'dash_bootstrap_components._components.Container.Container'>` with no traceback. (This does not assert content — that's covered by Task 9's Selenium test — it just proves the module imports and `layout()` executes without error, catching typos/import errors before the browser test.)
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add src/pages/admin/__init__.py src/pages/admin/_shell.py src/pages/admin/liste.py
+git commit -m "feat(admin): add /admin user list page"
+```
+
+---
+
+### Task 7: `/admin/user/<user_id>` detail page
+
+**Files:**
+
+- Create: `src/pages/admin/detail.py`
+
+**Interfaces:**
+
+- Consumes: `not_admin`, `admin_nav` (Task 6), `is_admin` (Task 4), `get_user_by_id` (existing), `get_current`, `list_by_user`, `get_subscriber_state`, `SUBSCRIPTION_STATUSES` (Task 2).
+
+- [ ] **Step 1: Create the detail page**
+
+Create `src/pages/admin/detail.py`:
+
+```python
+import dash_bootstrap_components as dbc
+from dash import dcc, html, register_page
+
+from src.admin.guard import is_admin
+from src.auth.db import get_user_by_id
+from src.pages.admin._shell import admin_nav, not_admin
+from src.subscriptions.db import (
+    SUBSCRIPTION_STATUSES,
+    get_current,
+    get_subscriber_state,
+    list_by_user,
+)
+
+register_page(
+    __name__,
+    path_template="/admin/user/<user_id>",
+    title="Détail utilisateur | colibre",
+    name="Détail utilisateur",
+    description="Panneau d'administration interne.",
+)
+
+ERROR_MESSAGES = {"invalid_status": "Statut invalide ou abonnement introuvable."}
+SUCCESS_MESSAGES = {"status_changed": "Statut de l'abonnement mis à jour."}
+
+
+def _parse_user_id(user_id):
+    try:
+        return int(user_id)
+    except (TypeError, ValueError):
+        return None
+
+
+def _not_found():
+    return dbc.Container(
+        [
+            html.H2("Panneau admin"),
+            admin_nav("liste"),
+            dbc.Alert("Utilisateur introuvable.", color="warning"),
+        ],
+        fluid=True,
+        className="py-4",
+    )
+
+
+def _csrf():
+    return dcc.Input(
+        type="hidden",
+        id={"type": "csrf-input", "index": "admin-status"},
+        name="csrf_token",
+    )
+
+
+def _account_section(user):
+    return html.Div(
+        [
+            html.H4("Compte"),
+            html.P([html.Strong("Email : "), user["email"]]),
+            html.P(
+                [
+                    html.Strong("Vérifié : "),
+                    "oui" if user["email_verified"] else "non",
+                ]
+            ),
+            html.P([html.Strong("SIRET : "), user["siret"] or "—"]),
+            html.P([html.Strong("Créé le : "), user["created_at"]]),
+        ]
+    )
+
+
+def _state_section(user_id):
+    state = get_subscriber_state(user_id)
+    return html.Div(
+        [
+            html.H4("État abonné", className="mt-4"),
+            html.P(
+                [
+                    html.Strong("Solde de votes : "),
+                    str(state["votes_balance"] if state else 0),
+                ]
+            ),
+            html.P(
+                [
+                    html.Strong("Essai utilisé : "),
+                    "oui" if state and state["trial_used"] else "non",
+                ]
+            ),
+        ]
+    )
+
+
+def _history_section(user_id, current_id):
+    rows = []
+    for sub in list_by_user(user_id):
+        badge = (
+            dbc.Badge("actuel", color="primary", className="ms-2")
+            if sub["id"] == current_id
+            else None
+        )
+        rows.append(
+            html.Tr(
+                [
+                    html.Td([sub["plan"] or "—", badge]),
+                    html.Td(sub["status"] or "—"),
+                    html.Td(sub["prix_ht"] if sub["prix_ht"] is not None else "—"),
+                    html.Td(sub["current_period_end"] or "—"),
+                    html.Td(sub["created_at"]),
+                ]
+            )
+        )
+    return html.Div(
+        [
+            html.H4("Historique des abonnements", className="mt-4"),
+            dbc.Table(
+                [
+                    html.Thead(
+                        html.Tr(
+                            [
+                                html.Th(h)
+                                for h in (
+                                    "Plan",
+                                    "Statut",
+                                    "Prix HT",
+                                    "Fin de période",
+                                    "Créé le",
+                                )
+                            ]
+                        )
+                    ),
+                    html.Tbody(rows),
+                ],
+                bordered=True,
+                size="sm",
+            ),
+        ]
+    )
+
+
+def _status_form(user_id, current):
+    if current is None:
+        return html.Div()
+    return html.Div(
+        [
+            html.H4("Changer le statut de l'abonnement courant", className="mt-4"),
+            html.Form(
+                method="POST",
+                action="/admin/actions/subscription-status",
+                children=[
+                    _csrf(),
+                    dcc.Input(type="hidden", name="user_id", value=str(user_id)),
+                    dcc.Input(
+                        type="hidden", name="subscription_id", value=str(current["id"])
+                    ),
+                    dbc.Select(
+                        id="admin-status-select",
+                        name="status",
+                        options=[
+                            {"label": s, "value": s} for s in SUBSCRIPTION_STATUSES
+                        ],
+                        value=current["status"],
+                        className="mb-3",
+                        style={"maxWidth": "300px"},
+                    ),
+                    dbc.Button("Mettre à jour le statut", type="submit", color="primary"),
+                ],
+            ),
+        ]
+    )
+
+
+def layout(user_id=None, error=None, status_changed=None, **_):
+    if not is_admin():
+        return not_admin()
+
+    uid = _parse_user_id(user_id)
+    user = get_user_by_id(uid) if uid is not None else None
+    if user is None:
+        return _not_found()
+
+    alerts = []
+    if error in ERROR_MESSAGES:
+        alerts.append(dbc.Alert(ERROR_MESSAGES[error], color="danger"))
+    if status_changed == "1":
+        alerts.append(dbc.Alert(SUCCESS_MESSAGES["status_changed"], color="success"))
+
+    current = get_current(user["id"])
+
+    return dbc.Container(
+        [
+            html.H2("Panneau admin"),
+            admin_nav("liste"),
+            *alerts,
+            _account_section(user),
+            _state_section(user["id"]),
+            _history_section(user["id"], current["id"] if current else None),
+            _status_form(user["id"], current),
+        ],
+        fluid=True,
+        className="py-4",
+    )
+```
+
+- [ ] **Step 2: Sanity-check the layout renders without a browser**
+
+Run:
+
+```bash
+uv run python -c "
+import os
+os.environ.setdefault('USERS_DB_PATH', 'tests/users.test.sqlite')
+os.environ.setdefault('SECRET_KEY', 'x')
+os.environ['ADMIN_EMAIL'] = 'admin@ex.fr'
+from unittest.mock import patch
+from flask import Flask
+from src.auth.setup import init_auth
+app = Flask(__name__)
+app.config['WTF_CSRF_ENABLED'] = False
+init_auth(app)
+with app.test_request_context():
+    import src.pages.admin.detail as detail
+    admin = type('U', (), {'is_authenticated': True, 'email': 'admin@ex.fr'})()
+    with patch('src.admin.guard.current_user', admin):
+        print(type(detail.layout(user_id='999999')))
+"
+```
+
+Expected: prints the `Container` type for the not-found branch, no traceback.
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add src/pages/admin/detail.py
+git commit -m "feat(admin): add /admin/user/<user_id> detail page"
+```
+
+---
+
+### Task 8: `/admin/journal` audit log page
+
+**Files:**
+
+- Create: `src/pages/admin/journal.py`
+
+**Interfaces:**
+
+- Consumes: `not_admin`, `admin_nav` (Task 6), `is_admin` (Task 4), `list_actions` (Task 3).
+
+- [ ] **Step 1: Create the journal page**
+
+Create `src/pages/admin/journal.py`:
+
+```python
+import dash_bootstrap_components as dbc
+from dash import dash_table, html, register_page
+
+from src.admin.db import list_actions
+from src.admin.guard import is_admin
+from src.pages.admin._shell import admin_nav, not_admin
+
+register_page(
+    __name__,
+    path="/admin/journal",
+    title="Journal admin | colibre",
+    name="Journal admin",
+    description="Panneau d'administration interne.",
+)
+
+
+def _rows():
+    rows = []
+    for action in list_actions():
+        target = action["target_user_id"]
+        rows.append(
+            {
+                "date": action["created_at"],
+                "admin": action["admin_email"],
+                "action": action["action"],
+                "user": f"[{target}](/admin/user/{target})" if target else "",
+                "détails": action["details"] or "",
+            }
+        )
+    return rows
+
+
+def layout(**_):
+    if not is_admin():
+        return not_admin()
+    return dbc.Container(
+        [
+            html.H2("Journal des actions admin"),
+            admin_nav("journal"),
+            dash_table.DataTable(
+                id="admin-journal-table",
+                columns=[
+                    {"name": "Date", "id": "date"},
+                    {"name": "Admin", "id": "admin"},
+                    {"name": "Action", "id": "action"},
+                    {"name": "User", "id": "user", "presentation": "markdown"},
+                    {"name": "Détails", "id": "détails"},
+                ],
+                data=_rows(),
+                sort_action="native",
+                page_action="native",
+                page_size=20,
+                markdown_options={"link_target": "_self"},
+            ),
+        ],
+        fluid=True,
+        className="py-4",
+    )
+```
+
+- [ ] **Step 2: Sanity-check the layout renders without a browser**
+
+Run:
+
+```bash
+uv run python -c "
+import os
+os.environ.setdefault('USERS_DB_PATH', 'tests/users.test.sqlite')
+os.environ.setdefault('SECRET_KEY', 'x')
+os.environ['ADMIN_EMAIL'] = 'admin@ex.fr'
+from unittest.mock import patch
+from flask import Flask
+from src.auth.setup import init_auth
+app = Flask(__name__)
+app.config['WTF_CSRF_ENABLED'] = False
+init_auth(app)
+with app.test_request_context():
+    import src.pages.admin.journal as journal
+    admin = type('U', (), {'is_authenticated': True, 'email': 'admin@ex.fr'})()
+    with patch('src.admin.guard.current_user', admin):
+        print(type(journal.layout()))
+"
+```
+
+Expected: prints the `Container` type, no traceback.
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add src/pages/admin/journal.py
+git commit -m "feat(admin): add /admin/journal audit log page"
+```
+
+---
+
+### Task 9: End-to-end Selenium coverage
+
+**Files:**
+
+- Create: `tests/admin/test_pages.py`
+
+**Interfaces:**
+
+- Consumes: `src.app.app` (the full Dash/Flask app), `src.auth.db`, `src.subscriptions.db`.
+
+**Note on `tests/users.test.sqlite`:** this file is committed to git and shared by the whole Selenium test session (`USERS_DB_PATH=tests/users.test.sqlite` is set globally in `pyproject.toml`'s `[tool.pytest.ini_options] env`, unlike the per-test-isolated `users_db_path` fixture used in Tasks 1-8). Every row this test creates **must** be deleted in a `finally` block so the committed file is left unchanged (`git status` clean) after a test run. Emails are also uuid-suffixed so repeated runs never collide even if cleanup is skipped due to a crash.
+
+- [ ] **Step 1: Write the test file**
+
+Create `tests/admin/test_pages.py`:
+
+```python
+import uuid
+
+from dash.testing.composite import DashComposite
+from selenium.webdriver.support.ui import Select
+from werkzeug.security import generate_password_hash
+
+from src.auth import db as auth_db
+from src.subscriptions import db as sub_db
+
+PASSWORD = "s3cretpass!"
+
+
+def _unique_email(prefix: str) -> str:
+    return f"{prefix}-{uuid.uuid4().hex[:8]}@ex.fr"
+
+
+def _make_verified_user(email: str) -> int:
+    auth_db.init_schema()
+    uid = auth_db.create_user(email, generate_password_hash(PASSWORD))
+    auth_db.set_email_verified(uid)
+    return uid
+
+
+def _cleanup_user(user_id: int) -> None:
+    conn = auth_db.get_conn()
+    conn.execute("DELETE FROM admin_actions WHERE target_user_id = ?", (user_id,))
+    conn.execute("DELETE FROM subscriptions WHERE user_id = ?", (user_id,))
+    conn.execute("DELETE FROM subscriber_state WHERE user_id = ?", (user_id,))
+    conn.execute("DELETE FROM users WHERE id = ?", (user_id,))
+
+
+def _login(dash_duo: DashComposite, email: str):
+    dash_duo.driver.get(dash_duo.server_url + "/connexion")
+    dash_duo.wait_for_element("input[name=email]", timeout=8).send_keys(email)
+    dash_duo.driver.find_element("css selector", "input[name=password]").send_keys(
+        PASSWORD
+    )
+    dash_duo.driver.find_element("css selector", "button[type=submit]").click()
+
+
+def test_admin_anonymous_gets_404(dash_duo: DashComposite):
+    from src.app import app
+
+    dash_duo.start_server(app)
+    dash_duo.driver.get(dash_duo.server_url + "/admin")
+    dash_duo.wait_for_text_to_equal("#admin-404-heading", "404", timeout=8)
+
+
+def test_admin_non_admin_gets_404(dash_duo: DashComposite, monkeypatch):
+    from src.app import app
+
+    monkeypatch.setenv("ADMIN_EMAIL", "admin-only@ex.fr")
+    email = _unique_email("regular")
+    uid = _make_verified_user(email)
+    try:
+        dash_duo.start_server(app)
+        _login(dash_duo, email)
+        dash_duo.driver.get(dash_duo.server_url + "/admin")
+        dash_duo.wait_for_text_to_equal("#admin-404-heading", "404", timeout=8)
+    finally:
+        _cleanup_user(uid)
+
+
+def test_admin_full_flow(dash_duo: DashComposite, monkeypatch):
+    from src.app import app
+
+    admin_email = _unique_email("admin")
+    monkeypatch.setenv("ADMIN_EMAIL", admin_email)
+    admin_uid = _make_verified_user(admin_email)
+
+    target_email = _unique_email("target")
+    target_uid = _make_verified_user(target_email)
+    sub_db.init_schema()
+    _handle, sub_id = sub_db.create_pending(target_uid, "cust-e2e", "simple", 20.0)
+    sub_db.set_status(sub_id, "active")
+
+    try:
+        dash_duo.start_server(app)
+        _login(dash_duo, admin_email)
+
+        dash_duo.driver.get(dash_duo.server_url + "/admin")
+        dash_duo.wait_for_text_to_equal("h2", "Panneau admin", timeout=8)
+        assert target_email in dash_duo.driver.page_source
+
+        dash_duo.driver.get(f"{dash_duo.server_url}/admin/user/{target_uid}")
+        dash_duo.wait_for_text_to_equal("h2", "Panneau admin", timeout=8)
+        assert target_email in dash_duo.driver.page_source
+
+        select = Select(
+            dash_duo.driver.find_element("css selector", "select[name=status]")
+        )
+        select.select_by_value("cancelled")
+        dash_duo.driver.find_element("css selector", "button[type=submit]").click()
+
+        dash_duo.wait_for_text_to_equal(
+            ".alert-success", "Statut de l'abonnement mis à jour.", timeout=8
+        )
+        assert "cancelled" in dash_duo.driver.page_source
+
+        dash_duo.driver.get(dash_duo.server_url + "/admin/journal")
+        dash_duo.wait_for_text_to_equal("h2", "Journal des actions admin", timeout=8)
+        assert "subscription_status_change" in dash_duo.driver.page_source
+        assert "active → cancelled" in dash_duo.driver.page_source
+    finally:
+        _cleanup_user(target_uid)
+        _cleanup_user(admin_uid)
+```
+
+- [ ] **Step 2: Run the tests**
+
+Run: `uv run pytest tests/admin/test_pages.py -v`
+Expected: 3 passed
+
+- [ ] **Step 3: Verify `tests/users.test.sqlite` is unchanged**
+
+Run: `git status --short tests/users.test.sqlite`
+Expected: no output (empty — file unchanged)
+
+If it shows as modified, the cleanup in Step 1 missed a row (check `admin_actions`, `subscriptions`, `subscriber_state`, `users` in that order — foreign keys cascade `ON DELETE CASCADE` from `users`, but `admin_actions.target_user_id` has no FK constraint so it needs the explicit `DELETE` shown above). Fix and re-run before committing.
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add tests/admin/test_pages.py
+git commit -m "test(admin): add end-to-end Selenium coverage for the admin panel"
+```
+
+---
+
+## Self-Review Notes
+
+- **Spec coverage:** Contexte/architecture → Tasks 4-5; couche données (`list_users`, `list_by_user`, `set_status`, `get_subscriber_state`, `SUBSCRIPTION_STATUSES`, `admin_actions`) → Tasks 1-3; pages (`/admin`, `/admin/user/<id>`, `/admin/journal`) → Tasks 6-8; route de mutation → Task 5; tests (unitaires, route, pages) → Tasks 1-9 respectively; pagination native 20/page → Task 6 and 8. Hors périmètre items (reset mot de passe, suppression de compte, édition subscriber_state, multi-admin, pagination SQL) are intentionally not implemented anywhere in this plan.
+- **Type consistency checked:** `is_admin()` (Task 4) used identically in `admin_bp.before_request` (Task 5) and in every page's `layout()` (Tasks 6-8). `SUBSCRIPTION_STATUSES` (Task 2) used identically in the route's validation (Task 5) and the detail page's dropdown (Task 7). `list_actions()` / `log_action()` signatures (Task 3) match their use in the route (Task 5) and journal page (Task 8).
+- **`_not_admin` naming:** unified as `not_admin()` (no leading underscore) in `_shell.py` since it's imported across three page modules — an underscore-prefixed name would be misleading as a cross-module import.