admin: internal-only superadmin console (users, payments, DB stats)

New independent `admin` service (admin.main:app) on the same image, reusing
app.db/app.models read-only. Never runs migrations or the scheduler; issues
SELECTs only.

- Password-gated (ADMIN_CONSOLE_PASSWORD) with a 12h signed cookie; closed by
  default when the password is empty.
- Bound to 127.0.0.1:8091 (SSH-tunnel access); off the intranet/NPM network.
- Pages: overview stats, user list + search, per-user history/payment detail,
  DB usage (information_schema size + row estimates).
- Compose: base `admin` service (+prod DB-host override, test mount); Dockerfile
  bakes admin/ into runtime + test stages.
- Tests: tests/test_admin_console.py (auth, queries, page wiring) — 12 passing.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

admin/README.md

@@ -0,0 +1,50 @@
+# Superadmin console
+
+An **independent, internal-only** web service for the operator: user list with
+per-user history + payment status, and database usage stats. Runs in its own
+container (`admin` service) off the same image as the main app, reusing
+`app.db` + `app.models`, but it is a separate FastAPI app (`admin.main:app`)
+that **never** runs migrations or the scheduler and only ever issues `SELECT`s.
+
+## Access model
+
+- Bound to **`127.0.0.1:8091`** on the host — never exposed publicly, not on
+  the `intranet`/NPM network. Reach it over an SSH tunnel:
+
+  ```sh
+  ssh -L 8091:localhost:8091 <vps>
+  # then open http://localhost:8091
+  ```
+
+- Gated by a single shared password, `ADMIN_CONSOLE_PASSWORD` (in `.env`).
+  Empty password ⇒ every login is refused (closed by default). The login sets
+  a 12-hour signed cookie (`admin_console_session`).
+
+## Pages
+
+- `/` — overview: totals, tier split, paid-active, signups 7/30d, sync count,
+  referral conversions, newest users.
+- `/users` — full user table with email search + paging.
+- `/users/{id}` — one user: account, computed paid status, Stripe/Polar
+  linkage, cloud-sync state, referrals sent, feedback votes, digest-email log,
+  legal acknowledgements.
+- `/db` — per-table row estimates and on-disk size (from
+  `information_schema.tables`), with each table's share of total.
+
+## Deploy (this host runs prod)
+
+Adding a **new** service means `up -d` (a plain `restart` won't create it).
+Do NOT run a bare `docker compose up` on this host — always pass the prod
+overlay:
+
+```sh
+# 1. set ADMIN_CONSOLE_PASSWORD in .env
+# 2. build + create just the admin container (leaves app/scheduler/db running)
+docker compose -f docker-compose.yml -f docker-compose.prod.yml up -d --build admin
+```
+
+## Tests
+
+```sh
+docker compose -f docker-compose.test.yml run --rm test pytest tests/test_admin_console.py -v
+```

admin/__init__.py

@@ -0,0 +1,9 @@
+"""Superadmin console — an independent, internal-only web service.
+
+Runs in its own container (see the `admin` service in docker-compose.yml),
+bound to 127.0.0.1 on the VPS and reached over an SSH tunnel. It reuses the
+main app's ORM models and DB engine (`app.db`, `app.models`) but is a wholly
+separate FastAPI app: it never imports `app.main`, so it does NOT run Alembic
+migrations or the app's lifespan. Every DB access is a plain SELECT — the
+console never writes.
+"""

admin/auth.py

@@ -0,0 +1,71 @@
+"""Password gate for the superadmin console.
+
+A single shared password (``ADMIN_CONSOLE_PASSWORD``) is exchanged at
+``/login`` for a signed, time-limited session cookie. There is no user
+identity here — the console has exactly one principal, "the operator".
+
+The cookie is signed with itsdangerous using ``ADMIN_CONSOLE_SESSION_SECRET``
+(falling back to the main app's session secret / token), mirroring the scheme
+in ``app.auth`` but under a distinct salt so an app session cookie can never
+be replayed against the console and vice-versa.
+"""
+from __future__ import annotations
+
+import secrets
+
+from fastapi import HTTPException, Request, status
+from itsdangerous import BadSignature, SignatureExpired, URLSafeTimedSerializer
+
+from app.config import get_settings
+
+SESSION_COOKIE_NAME = "admin_console_session"
+SESSION_TTL_SECONDS = 12 * 60 * 60  # 12 hours — re-auth daily-ish.
+_SALT = "admin-console-session-v1"
+
+
+def _serializer() -> URLSafeTimedSerializer:
+    s = get_settings()
+    secret = (
+        s.ADMIN_CONSOLE_SESSION_SECRET
+        or s.CASSANDRA_SESSION_SECRET
+        or s.CASSANDRA_TOKEN
+        or "dev-insecure-secret"
+    )
+    return URLSafeTimedSerializer(secret, salt=_SALT)
+
+
+def check_password(provided: str) -> bool:
+    """Constant-time compare against ``ADMIN_CONSOLE_PASSWORD``. Returns
+    False when the password is unset — the console is closed by default so a
+    fresh deploy can't be logged into without an explicit password."""
+    expected = get_settings().ADMIN_CONSOLE_PASSWORD
+    if not expected:
+        return False
+    return secrets.compare_digest(provided.encode(), expected.encode())
+
+
+def sign_session() -> str:
+    """Signed value proving a successful password login. Carries no identity
+    beyond a version marker — the console has a single principal."""
+    return _serializer().dumps({"v": 1})
+
+
+def verify_session(cookie: str) -> bool:
+    try:
+        data = _serializer().loads(cookie, max_age=SESSION_TTL_SECONDS)
+        return data.get("v") == 1
+    except (BadSignature, SignatureExpired, KeyError, TypeError, ValueError):
+        return False
+
+
+def require_admin(request: Request) -> None:
+    """FastAPI dependency guarding every console page. Valid cookie → passes;
+    otherwise 303 → /login (browser) so the operator lands on the form."""
+    cookie = request.cookies.get(SESSION_COOKIE_NAME)
+    if cookie and verify_session(cookie):
+        return
+    raise HTTPException(
+        status_code=status.HTTP_303_SEE_OTHER,
+        detail="Login required",
+        headers={"Location": "/login"},
+    )

admin/main.py

@@ -0,0 +1,140 @@
+"""Superadmin console FastAPI app.
+
+Independent of ``app.main``: it wires only its own routes and reuses
+``app.db``'s session factory for read-only queries. No lifespan, no
+migrations, no scheduler.
+
+Run:  uvicorn admin.main:app --host 0.0.0.0 --port 8000
+"""
+from __future__ import annotations
+
+from datetime import datetime, timezone
+from pathlib import Path
+
+from fastapi import Depends, FastAPI, Form, Query, Request
+from fastapi.responses import HTMLResponse, PlainTextResponse, RedirectResponse
+from fastapi.templating import Jinja2Templates
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from admin import auth, queries
+from app.db import get_session
+
+TEMPLATE_DIR = Path(__file__).resolve().parent / "templates"
+templates = Jinja2Templates(directory=str(TEMPLATE_DIR))
+
+
+def _fmt_bytes(n: int | None) -> str:
+    if not n:
+        return "0 B"
+    units = ["B", "KB", "MB", "GB", "TB"]
+    size = float(n)
+    for u in units:
+        if size < 1024 or u == units[-1]:
+            return f"{size:,.0f} {u}" if u == "B" else f"{size:,.1f} {u}"
+        size /= 1024
+    return f"{n} B"
+
+
+def _fmt_dt(dt: datetime | None) -> str:
+    if dt is None:
+        return "—"
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    return dt.strftime("%Y-%m-%d %H:%M UTC")
+
+
+templates.env.filters["bytes"] = _fmt_bytes
+templates.env.filters["dt"] = _fmt_dt
+
+app = FastAPI(title="read.markets superadmin console", docs_url=None, redoc_url=None)
+
+
+@app.get("/healthz", response_class=PlainTextResponse, include_in_schema=False)
+async def healthz() -> str:
+    return "ok"
+
+
+@app.get("/login", response_class=HTMLResponse, include_in_schema=False)
+async def login_form(request: Request):
+    # Already signed in? Skip the form.
+    cookie = request.cookies.get(auth.SESSION_COOKIE_NAME)
+    if cookie and auth.verify_session(cookie):
+        return RedirectResponse("/", status_code=303)
+    return templates.TemplateResponse(request, "login.html", {"error": None})
+
+
+@app.post("/login", response_class=HTMLResponse, include_in_schema=False)
+async def login_submit(request: Request, password: str = Form(...)):
+    if not auth.check_password(password):
+        return templates.TemplateResponse(
+            request, "login.html", {"error": "Incorrect password."},
+            status_code=401,
+        )
+    resp = RedirectResponse("/", status_code=303)
+    resp.set_cookie(
+        auth.SESSION_COOKIE_NAME,
+        auth.sign_session(),
+        max_age=auth.SESSION_TTL_SECONDS,
+        httponly=True,
+        samesite="lax",
+        # secure=False: the console is served over http on a localhost SSH
+        # tunnel, never public TLS. A secure cookie would never be sent.
+        secure=False,
+    )
+    return resp
+
+
+@app.get("/logout", include_in_schema=False)
+async def logout():
+    resp = RedirectResponse("/login", status_code=303)
+    resp.delete_cookie(auth.SESSION_COOKIE_NAME)
+    return resp
+
+
+@app.get("/", response_class=HTMLResponse, include_in_schema=False,
+         dependencies=[Depends(auth.require_admin)])
+async def overview(request: Request, session: AsyncSession = Depends(get_session)):
+    stats = await queries.overview_stats(session)
+    recent, _ = await queries.list_users(session, limit=10)
+    return templates.TemplateResponse(
+        request, "overview.html", {"stats": stats, "recent": recent},
+    )
+
+
+@app.get("/users", response_class=HTMLResponse, include_in_schema=False,
+         dependencies=[Depends(auth.require_admin)])
+async def users_list(
+    request: Request,
+    session: AsyncSession = Depends(get_session),
+    q: str | None = Query(default=None),
+    page: int = Query(default=1, ge=1),
+):
+    per_page = 200
+    offset = (page - 1) * per_page
+    rows, total = await queries.list_users(session, q=q, limit=per_page, offset=offset)
+    return templates.TemplateResponse(
+        request, "users.html",
+        {"rows": rows, "total": total, "q": q or "",
+         "page": page, "per_page": per_page},
+    )
+
+
+@app.get("/users/{user_id}", response_class=HTMLResponse, include_in_schema=False,
+         dependencies=[Depends(auth.require_admin)])
+async def user_detail(
+    request: Request, user_id: int,
+    session: AsyncSession = Depends(get_session),
+):
+    detail = await queries.user_detail(session, user_id)
+    if detail is None:
+        return templates.TemplateResponse(
+            request, "not_found.html", {"user_id": user_id}, status_code=404,
+        )
+    return templates.TemplateResponse(request, "user_detail.html", {"d": detail})
+
+
+@app.get("/db", response_class=HTMLResponse, include_in_schema=False,
+         dependencies=[Depends(auth.require_admin)])
+async def db_page(request: Request, session: AsyncSession = Depends(get_session)):
+    stats = await queries.db_stats(session)
+    return templates.TemplateResponse(request, "db.html", {"stats": stats})

admin/queries.py

@@ -0,0 +1,266 @@
+"""Read-only queries backing the console. Every function issues SELECTs
+only — the console never mutates the database.
+
+Payment status is computed with the app's own ``paid_status`` so the console
+never diverges from what the app considers "paid".
+"""
+from __future__ import annotations
+
+from datetime import timedelta
+
+from sqlalchemy import func, or_, select, text
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.db import utcnow
+from app.models import (
+    EmailSend,
+    PortfolioSync,
+    Referral,
+    StrategicLogFeedback,
+    User,
+    UserAcknowledgement,
+)
+from app.services.access import paid_status
+
+
+async def overview_stats(session: AsyncSession) -> dict:
+    """Headline counts for the landing page: totals, tier split, growth,
+    paid-active, engagement."""
+    now = utcnow()
+    d7 = now - timedelta(days=7)
+    d30 = now - timedelta(days=30)
+
+    total = await session.scalar(select(func.count(User.id))) or 0
+
+    tier_rows = (await session.execute(
+        select(User.tier, func.count(User.id)).group_by(User.tier)
+    )).all()
+    tiers = {tier: n for tier, n in tier_rows}
+
+    signups_7d = await session.scalar(
+        select(func.count(User.id)).where(User.created_at >= d7)
+    ) or 0
+    signups_30d = await session.scalar(
+        select(func.count(User.id)).where(User.created_at >= d30)
+    ) or 0
+    active_30d = await session.scalar(
+        select(func.count(User.id)).where(User.last_login_at >= d30)
+    ) or 0
+
+    # Paid-active = subscribed tier OR a live credit window. The two are
+    # counted disjointly (a credit user whose tier is already paid is only
+    # counted once, under tier) so the sum can't double-count.
+    paid_by_tier = await session.scalar(
+        select(func.count(User.id)).where(User.tier.in_(("paid", "enterprise")))
+    ) or 0
+    credit_active = await session.scalar(
+        select(func.count(User.id)).where(
+            User.credit_until.is_not(None),
+            User.credit_until > now,
+            User.tier.not_in(("paid", "enterprise")),
+        )
+    ) or 0
+
+    sync_enabled = await session.scalar(
+        select(func.count(PortfolioSync.user_id))
+    ) or 0
+
+    referrals_total = await session.scalar(select(func.count(Referral.id))) or 0
+    referrals_converted = await session.scalar(
+        select(func.count(Referral.id)).where(Referral.converted_at.is_not(None))
+    ) or 0
+
+    return {
+        "total_users": total,
+        "tiers": tiers,
+        "free": tiers.get("free", 0),
+        "paid": tiers.get("paid", 0),
+        "enterprise": tiers.get("enterprise", 0),
+        "paid_active": paid_by_tier + credit_active,
+        "credit_active": credit_active,
+        "signups_7d": signups_7d,
+        "signups_30d": signups_30d,
+        "active_30d": active_30d,
+        "sync_enabled": sync_enabled,
+        "referrals_total": referrals_total,
+        "referrals_converted": referrals_converted,
+    }
+
+
+async def list_users(
+    session: AsyncSession,
+    q: str | None = None,
+    limit: int = 200,
+    offset: int = 0,
+) -> tuple[list[dict], int]:
+    """User rows for the table view, newest first. Optional ``q`` filters by
+    email substring. Returns (rows, total_matching)."""
+    stmt = select(User)
+    count_stmt = select(func.count(User.id))
+    if q:
+        like = f"%{q.strip()}%"
+        stmt = stmt.where(User.email.like(like))
+        count_stmt = count_stmt.where(User.email.like(like))
+
+    total = await session.scalar(count_stmt) or 0
+    users = (await session.execute(
+        stmt.order_by(User.created_at.desc()).limit(limit).offset(offset)
+    )).scalars().all()
+
+    if not users:
+        return [], total
+
+    ids = [u.id for u in users]
+
+    # One grouped query each for the per-user badges, merged in Python —
+    # avoids an N+1 without a wide join fan-out.
+    sync_ids = set((await session.execute(
+        select(PortfolioSync.user_id).where(PortfolioSync.user_id.in_(ids))
+    )).scalars().all())
+
+    ref_counts = dict((await session.execute(
+        select(Referral.referrer_user_id, func.count(Referral.id))
+        .where(Referral.referrer_user_id.in_(ids))
+        .group_by(Referral.referrer_user_id)
+    )).all())
+
+    rows: list[dict] = []
+    for u in users:
+        ps = paid_status(u)
+        rows.append({
+            "id": u.id,
+            "email": u.email,
+            "tier": u.tier,
+            "paid_active": ps.active,
+            "paid_source": ps.source,
+            "credit_days": ps.days_remaining,
+            "created_at": u.created_at,
+            "last_login_at": u.last_login_at,
+            "lang": u.lang,
+            "has_sync": u.id in sync_ids,
+            "referrals": ref_counts.get(u.id, 0),
+            "on_stripe": bool(u.stripe_customer_id),
+            "on_polar": bool(u.polar_customer_id),
+            "trialing": u.stripe_trial_end_at is not None,
+        })
+    return rows, total
+
+
+async def user_detail(session: AsyncSession, user_id: int) -> dict | None:
+    """Everything the console shows for one user: the row itself, computed
+    payment status, billing linkage, and joined activity history."""
+    user = await session.get(User, user_id)
+    if user is None:
+        return None
+
+    ps = paid_status(user)
+
+    referred_by = None
+    if user.referred_by_user_id:
+        ref = await session.get(User, user.referred_by_user_id)
+        referred_by = {"id": ref.id, "email": ref.email} if ref else None
+
+    # Referrals this user sent (with conversion state).
+    sent = (await session.execute(
+        select(Referral, User.email)
+        .join(User, User.id == Referral.referred_user_id)
+        .where(Referral.referrer_user_id == user_id)
+        .order_by(Referral.created_at.desc())
+    )).all()
+    referrals_sent = [{
+        "referred_email": email,
+        "created_at": r.created_at,
+        "converted_at": r.converted_at,
+    } for r, email in sent]
+
+    # Digest email delivery log (most recent first, capped).
+    email_rows = (await session.execute(
+        select(EmailSend).where(EmailSend.user_id == user_id)
+        .order_by(EmailSend.sent_at.desc()).limit(25)
+    )).scalars().all()
+    emails = [{
+        "kind": e.kind, "sent_at": e.sent_at,
+        "status": e.status, "error": e.error,
+    } for e in email_rows]
+
+    # Legal acknowledgements (evidentiary audit trail).
+    ack_rows = (await session.execute(
+        select(UserAcknowledgement).where(UserAcknowledgement.user_id == user_id)
+        .order_by(UserAcknowledgement.accepted_at.desc())
+    )).scalars().all()
+    acks = [{
+        "version": a.version, "lang": a.lang, "accepted_at": a.accepted_at,
+    } for a in ack_rows]
+
+    # Feedback votes cast on strategic logs.
+    fb_rows = (await session.execute(
+        select(StrategicLogFeedback.vote, func.count(StrategicLogFeedback.id))
+        .where(StrategicLogFeedback.user_id == user_id)
+        .group_by(StrategicLogFeedback.vote)
+    )).all()
+    feedback = {vote: n for vote, n in fb_rows}
+
+    sync = await session.get(PortfolioSync, user_id)
+
+    return {
+        "user": user,
+        "paid": ps,
+        "referred_by": referred_by,
+        "referrals_sent": referrals_sent,
+        "emails": emails,
+        "acks": acks,
+        "feedback": feedback,
+        "sync": {
+            "enabled": sync is not None,
+            "updated_at": sync.updated_at if sync else None,
+            "version": sync.version if sync else None,
+        },
+    }
+
+
+async def db_stats(session: AsyncSession) -> dict:
+    """Per-table size and row estimates for the current schema.
+
+    On MariaDB this reads ``information_schema.tables`` (row counts are the
+    engine's estimate for InnoDB, sizes are exact). On sqlite (the test
+    backend) there is no such view, so it falls back to real ``COUNT(*)``
+    per table with sizes reported as 0.
+    """
+    dialect = session.bind.dialect.name
+
+    if dialect == "sqlite":
+        from app.db import Base
+        tables = []
+        for tbl in Base.metadata.sorted_tables:
+            n = await session.scalar(select(func.count()).select_from(tbl)) or 0
+            tables.append({
+                "name": tbl.name, "rows": n,
+                "data_bytes": 0, "index_bytes": 0, "total_bytes": 0, "pct": 0.0,
+            })
+        tables.sort(key=lambda t: t["rows"], reverse=True)
+        return {"tables": tables, "total_bytes": 0, "total_rows": sum(t["rows"] for t in tables)}
+
+    rows = (await session.execute(text(
+        "SELECT table_name, table_rows, data_length, index_length "
+        "FROM information_schema.tables "
+        "WHERE table_schema = DATABASE() "
+        "ORDER BY (data_length + index_length) DESC"
+    ))).all()
+
+    tables = []
+    total_bytes = 0
+    total_rows = 0
+    for name, tr, data_len, idx_len in rows:
+        data_len = int(data_len or 0)
+        idx_len = int(idx_len or 0)
+        tot = data_len + idx_len
+        total_bytes += tot
+        total_rows += int(tr or 0)
+        tables.append({
+            "name": name, "rows": int(tr or 0),
+            "data_bytes": data_len, "index_bytes": idx_len, "total_bytes": tot,
+        })
+    for t in tables:
+        t["pct"] = round(100.0 * t["total_bytes"] / total_bytes, 1) if total_bytes else 0.0
+
+    return {"tables": tables, "total_bytes": total_bytes, "total_rows": total_rows}

admin/templates/base.html

@@ -0,0 +1,80 @@
+<!doctype html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <meta name="robots" content="noindex, nofollow">
+  <title>{% block title %}superadmin{% endblock %} · read.markets</title>
+  <style>
+    :root {
+      --bg:#0d1117; --panel:#161b22; --border:#30363d; --fg:#c9d1d9;
+      --muted:#8b949e; --accent:#58a6ff; --good:#3fb950; --warn:#d29922;
+      --bad:#f85149; --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
+    }
+    * { box-sizing:border-box; }
+    body { margin:0; background:var(--bg); color:var(--fg);
+           font:14px/1.5 var(--mono); }
+    a { color:var(--accent); text-decoration:none; }
+    a:hover { text-decoration:underline; }
+    header { display:flex; align-items:center; gap:1.5rem; padding:.75rem 1.25rem;
+             background:var(--panel); border-bottom:1px solid var(--border); }
+    header .brand { font-weight:700; color:#fff; }
+    header nav { display:flex; gap:1rem; }
+    header .spacer { flex:1; }
+    main { padding:1.25rem; max-width:1200px; margin:0 auto; }
+    h1 { font-size:1.25rem; margin:0 0 1rem; }
+    h2 { font-size:1rem; color:var(--muted); text-transform:uppercase;
+         letter-spacing:.05em; margin:1.5rem 0 .5rem; }
+    .cards { display:grid; grid-template-columns:repeat(auto-fill,minmax(160px,1fr));
+             gap:.75rem; }
+    .card { background:var(--panel); border:1px solid var(--border);
+            border-radius:6px; padding:.75rem 1rem; }
+    .card .n { font-size:1.6rem; font-weight:700; color:#fff; }
+    .card .l { color:var(--muted); font-size:.8rem; }
+    table { width:100%; border-collapse:collapse; margin-top:.5rem; }
+    th,td { text-align:left; padding:.4rem .6rem; border-bottom:1px solid var(--border);
+            white-space:nowrap; }
+    th { color:var(--muted); font-weight:600; font-size:.8rem;
+         text-transform:uppercase; letter-spacing:.04em; }
+    tr:hover td { background:#1c2230; }
+    .pill { display:inline-block; padding:.05rem .5rem; border-radius:999px;
+            font-size:.75rem; border:1px solid var(--border); }
+    .pill.good { color:var(--good); border-color:#238636; }
+    .pill.warn { color:var(--warn); border-color:#9e6a03; }
+    .pill.bad  { color:var(--bad);  border-color:#a1281f; }
+    .pill.mute { color:var(--muted); }
+    .muted { color:var(--muted); }
+    .bar { height:8px; background:#21262d; border-radius:4px; overflow:hidden;
+           min-width:80px; }
+    .bar > span { display:block; height:100%; background:var(--accent); }
+    form.search { margin:.5rem 0; }
+    input[type=text],input[type=password] {
+      background:#0d1117; border:1px solid var(--border); color:var(--fg);
+      padding:.4rem .6rem; border-radius:6px; font:inherit; }
+    button { background:#238636; color:#fff; border:0; padding:.45rem .9rem;
+             border-radius:6px; font:inherit; cursor:pointer; }
+    button:hover { background:#2ea043; }
+    .kv { display:grid; grid-template-columns:180px 1fr; gap:.25rem 1rem; }
+    .kv dt { color:var(--muted); }
+    .kv dd { margin:0; }
+    .login { max-width:340px; margin:12vh auto; background:var(--panel);
+             border:1px solid var(--border); border-radius:8px; padding:1.5rem; }
+    .err { color:var(--bad); margin:.5rem 0; }
+  </style>
+</head>
+<body>
+  {% if show_nav|default(true) %}
+  <header>
+    <span class="brand">read.markets · superadmin</span>
+    <nav>
+      <a href="/">Overview</a>
+      <a href="/users">Users</a>
+      <a href="/db">Database</a>
+    </nav>
+    <span class="spacer"></span>
+    <a href="/logout">Log out</a>
+  </header>
+  {% endif %}
+  <main>{% block body %}{% endblock %}</main>
+</body>
+</html>

admin/templates/db.html

@@ -0,0 +1,31 @@
+{% extends "base.html" %}
+{% block title %}database{% endblock %}
+{% block body %}
+<h1>Database usage</h1>
+<div class="cards">
+  <div class="card"><div class="n">{{ stats.total_bytes|bytes }}</div><div class="l">Total size</div></div>
+  <div class="card"><div class="n">{{ "{:,}".format(stats.total_rows) }}</div><div class="l">Total rows (est.)</div></div>
+  <div class="card"><div class="n">{{ stats.tables|length }}</div><div class="l">Tables</div></div>
+</div>
+
+<h2>Per table</h2>
+<table>
+  <thead><tr><th>Table</th><th>Rows (est.)</th><th>Data</th><th>Index</th><th>Total</th><th style="width:160px">Share</th></tr></thead>
+  <tbody>
+  {% for t in stats.tables %}
+    <tr>
+      <td>{{ t.name }}</td>
+      <td>{{ "{:,}".format(t.rows) }}</td>
+      <td class="muted">{{ t.data_bytes|bytes }}</td>
+      <td class="muted">{{ t.index_bytes|bytes }}</td>
+      <td>{{ t.total_bytes|bytes }}</td>
+      <td>
+        <div class="bar"><span style="width:{{ t.pct }}%"></span></div>
+        <span class="muted">{{ t.pct }}%</span>
+      </td>
+    </tr>
+  {% endfor %}
+  </tbody>
+</table>
+<p class="muted">Row counts are the storage engine's estimate for InnoDB; sizes are exact on-disk bytes.</p>
+{% endblock %}

admin/templates/login.html

@@ -0,0 +1,14 @@
+{% extends "base.html" %}
+{% set show_nav = false %}
+{% block title %}login{% endblock %}
+{% block body %}
+<div class="login">
+  <h1>Superadmin</h1>
+  {% if error %}<div class="err">{{ error }}</div>{% endif %}
+  <form method="post" action="/login">
+    <p><input type="password" name="password" placeholder="Password"
+              autofocus autocomplete="current-password" style="width:100%"></p>
+    <button type="submit">Sign in</button>
+  </form>
+</div>
+{% endblock %}

admin/templates/not_found.html

@@ -0,0 +1,6 @@
+{% extends "base.html" %}
+{% block title %}not found{% endblock %}
+{% block body %}
+<h1>User #{{ user_id }} not found</h1>
+<p><a href="/users">← back to users</a></p>
+{% endblock %}

admin/templates/overview.html

@@ -0,0 +1,22 @@
+{% extends "base.html" %}
+{% block title %}overview{% endblock %}
+{% block body %}
+<h1>Overview</h1>
+<div class="cards">
+  <div class="card"><div class="n">{{ stats.total_users }}</div><div class="l">Total users</div></div>
+  <div class="card"><div class="n">{{ stats.paid_active }}</div><div class="l">Paid-active</div></div>
+  <div class="card"><div class="n">{{ stats.free }}</div><div class="l">Free tier</div></div>
+  <div class="card"><div class="n">{{ stats.paid }}</div><div class="l">Paid tier</div></div>
+  <div class="card"><div class="n">{{ stats.enterprise }}</div><div class="l">Enterprise</div></div>
+  <div class="card"><div class="n">{{ stats.credit_active }}</div><div class="l">On credit</div></div>
+  <div class="card"><div class="n">{{ stats.signups_7d }}</div><div class="l">Signups · 7d</div></div>
+  <div class="card"><div class="n">{{ stats.signups_30d }}</div><div class="l">Signups · 30d</div></div>
+  <div class="card"><div class="n">{{ stats.active_30d }}</div><div class="l">Active · 30d</div></div>
+  <div class="card"><div class="n">{{ stats.sync_enabled }}</div><div class="l">Cloud-sync on</div></div>
+  <div class="card"><div class="n">{{ stats.referrals_converted }}/{{ stats.referrals_total }}</div><div class="l">Referrals conv.</div></div>
+</div>
+
+<h2>Newest users</h2>
+{% include "partials_users_table.html" %}
+<p><a href="/users">All users →</a></p>
+{% endblock %}

admin/templates/partials_users_table.html

@@ -0,0 +1,39 @@
+{# expects `recent` (overview) or `rows` (users list) — normalise to `rows` #}
+{% set rows = rows if rows is defined else recent %}
+<table>
+  <thead>
+    <tr>
+      <th>ID</th><th>Email</th><th>Tier</th><th>Paid</th><th>Created</th>
+      <th>Last login</th><th>Lang</th><th>Sync</th><th>Refs</th><th>Billing</th>
+    </tr>
+  </thead>
+  <tbody>
+  {% for u in rows %}
+    <tr>
+      <td>{{ u.id }}</td>
+      <td><a href="/users/{{ u.id }}">{{ u.email }}</a></td>
+      <td>{{ u.tier }}</td>
+      <td>
+        {% if u.paid_active %}
+          <span class="pill good">yes{% if u.paid_source == 'credit' %} · {{ u.credit_days }}d{% endif %}</span>
+        {% else %}
+          <span class="pill mute">no</span>
+        {% endif %}
+        {% if u.trialing %}<span class="pill warn">trial</span>{% endif %}
+      </td>
+      <td class="muted">{{ u.created_at|dt }}</td>
+      <td class="muted">{{ u.last_login_at|dt }}</td>
+      <td>{{ u.lang }}</td>
+      <td>{% if u.has_sync %}<span class="pill good">on</span>{% else %}<span class="muted">—</span>{% endif %}</td>
+      <td>{{ u.referrals }}</td>
+      <td>
+        {% if u.on_stripe %}<span class="pill">stripe</span>{% endif %}
+        {% if u.on_polar %}<span class="pill">polar</span>{% endif %}
+        {% if not u.on_stripe and not u.on_polar %}<span class="muted">—</span>{% endif %}
+      </td>
+    </tr>
+  {% else %}
+    <tr><td colspan="10" class="muted">No users.</td></tr>
+  {% endfor %}
+  </tbody>
+</table>

admin/templates/user_detail.html

@@ -0,0 +1,73 @@
+{% extends "base.html" %}
+{% set u = d.user %}
+{% block title %}{{ u.email }}{% endblock %}
+{% block body %}
+<p class="muted"><a href="/users">← users</a></p>
+<h1>{{ u.email }} <span class="muted">#{{ u.id }}</span></h1>
+
+<h2>Account</h2>
+<dl class="kv">
+  <dt>Tier</dt><dd>{{ u.tier }}</dd>
+  <dt>Paid status</dt><dd>
+    {% if d.paid.active %}
+      <span class="pill good">active</span> via {{ d.paid.source }}
+      {% if d.paid.source == 'credit' %}· expires {{ d.paid.expires_at|dt }} ({{ d.paid.days_remaining }}d){% endif %}
+    {% else %}<span class="pill mute">inactive</span>{% endif %}
+  </dd>
+  <dt>Credit until</dt><dd>{{ u.credit_until|dt }}</dd>
+  <dt>Created</dt><dd>{{ u.created_at|dt }}</dd>
+  <dt>Last login</dt><dd>{{ u.last_login_at|dt }}</dd>
+  <dt>Language</dt><dd>{{ u.lang }}</dd>
+  <dt>Digest opt-in</dt><dd>{{ 'yes' if u.email_digest_opt_in else 'no' }}{% if u.digest_tone %} · {{ u.digest_tone }}{% endif %}</dd>
+  <dt>Referral code</dt><dd>{{ u.referral_code or '—' }}</dd>
+  <dt>Referred by</dt><dd>{% if d.referred_by %}<a href="/users/{{ d.referred_by.id }}">{{ d.referred_by.email }}</a>{% else %}—{% endif %}</dd>
+</dl>
+
+<h2>Billing linkage</h2>
+<dl class="kv">
+  <dt>Stripe customer</dt><dd>{{ u.stripe_customer_id or '—' }}</dd>
+  <dt>Stripe subscription</dt><dd>{{ u.stripe_subscription_id or '—' }}</dd>
+  <dt>Stripe trial ends</dt><dd>{{ u.stripe_trial_end_at|dt }}</dd>
+  <dt>Polar customer</dt><dd>{{ u.polar_customer_id or '—' }}</dd>
+  <dt>Polar subscription</dt><dd>{{ u.polar_subscription_id or '—' }}</dd>
+</dl>
+
+<h2>Cloud sync</h2>
+{% if d.sync.enabled %}
+  <p><span class="pill good">enabled</span> · v{{ d.sync.version }} · updated {{ d.sync.updated_at|dt }}
+  <span class="muted">(contents are end-to-end encrypted — not readable here)</span></p>
+{% else %}<p class="muted">Not enabled.</p>{% endif %}
+
+<h2>Referrals sent ({{ d.referrals_sent|length }})</h2>
+{% if d.referrals_sent %}
+<table><thead><tr><th>Referred</th><th>Sent</th><th>Converted</th></tr></thead><tbody>
+  {% for r in d.referrals_sent %}
+  <tr><td>{{ r.referred_email }}</td><td class="muted">{{ r.created_at|dt }}</td>
+      <td>{% if r.converted_at %}<span class="pill good">{{ r.converted_at|dt }}</span>{% else %}<span class="muted">pending</span>{% endif %}</td></tr>
+  {% endfor %}
+</tbody></table>
+{% else %}<p class="muted">None.</p>{% endif %}
+
+<h2>Feedback votes</h2>
+<p>👍 {{ d.feedback.get('up', 0) }} · 👎 {{ d.feedback.get('down', 0) }}</p>
+
+<h2>Digest emails (last 25)</h2>
+{% if d.emails %}
+<table><thead><tr><th>Kind</th><th>Sent</th><th>Status</th><th>Error</th></tr></thead><tbody>
+  {% for e in d.emails %}
+  <tr><td>{{ e.kind }}</td><td class="muted">{{ e.sent_at|dt }}</td>
+      <td>{% if e.status == 'sent' %}<span class="pill good">sent</span>{% elif e.status == 'error' %}<span class="pill bad">error</span>{% else %}<span class="pill warn">{{ e.status }}</span>{% endif %}</td>
+      <td class="muted">{{ e.error or '' }}</td></tr>
+  {% endfor %}
+</tbody></table>
+{% else %}<p class="muted">None.</p>{% endif %}
+
+<h2>Legal acknowledgements</h2>
+{% if d.acks %}
+<table><thead><tr><th>Version</th><th>Lang</th><th>Accepted</th></tr></thead><tbody>
+  {% for a in d.acks %}
+  <tr><td>v{{ a.version }}</td><td>{{ a.lang }}</td><td class="muted">{{ a.accepted_at|dt }}</td></tr>
+  {% endfor %}
+</tbody></table>
+{% else %}<p class="muted">None recorded.</p>{% endif %}
+{% endblock %}

admin/templates/users.html

@@ -0,0 +1,20 @@
+{% extends "base.html" %}
+{% block title %}users{% endblock %}
+{% block body %}
+<h1>Users <span class="muted">({{ total }})</span></h1>
+<form class="search" method="get" action="/users">
+  <input type="text" name="q" value="{{ q }}" placeholder="filter by email…">
+  <button type="submit">Search</button>
+  {% if q %}<a href="/users" style="margin-left:.5rem">clear</a>{% endif %}
+</form>
+{% include "partials_users_table.html" %}
+
+{% set pages = (total // per_page) + (1 if total % per_page else 0) %}
+{% if pages > 1 %}
+<p class="muted">
+  Page {{ page }} / {{ pages }}
+  {% if page > 1 %}· <a href="/users?page={{ page-1 }}{% if q %}&q={{ q }}{% endif %}">prev</a>{% endif %}
+  {% if page < pages %}· <a href="/users?page={{ page+1 }}{% if q %}&q={{ q }}{% endif %}">next</a>{% endif %}
+</p>
+{% endif %}
+{% endblock %}