Add anki-progress service — family Anki study-progress dashboard

Read-only dashboard + ntfy notifications for an anki-sync-server instance, following this repo's standard Docker-service template (multi-instance, port scanning, DRY_RUN, update/fresh/cancel). Dashboard shows reviews today/this week, accuracy, and current streak per account. A background loop detects when a study session starts (first review after a configurable inactivity gap, default 30 min) and sends one ntfy notification a configurable delay later (default 10 min, per request) if the session is still going — not on every review, and not twice for the same session. Reads every account's collection.anki2 with SQLite's read-only mode (file:...?mode=ro) — never opens for write, so it can't corrupt or lock out the live sync server or a syncing client. Verified this concurrently against a real writer with no lock conflict, plus the streak/session/ notify-state logic against synthetic review timelines covering gapped streaks, multi-session boundaries, and the no-duplicate-notification requirement, before ever writing the installer around it. Requires an anki-sync-server instance (hard dependency, checked at install time, chains only that one direction per this repo's "Chaining into another service" convention) and auto-detects a local ntfy install to reach it directly over caddy_net instead of requiring a public URL. Follows security-dashboard.sh's Authelia pattern: local Authelia used automatically, remote Authelia offered otherwise, since this exposes every family member's personal study activity. Updates the Services table in README.md per the three-step rule. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014DyceEVVeQ33EeS6C1PDv5
2026-09-09 19:18:48 +00:00
parent c63237a3db
commit 9c7a054d97
2 changed files with 742 additions and 1 deletions
@@ -0,0 +1,741 @@
+#!/bin/bash
+# services/anki-progress.sh — Family Anki study-progress dashboard + ntfy
+# "started studying" notifications. Reads an anki-sync-server instance's
+# data directly (read-only) — see services/anki-sync-server.sh, which this
+# service requires.
+# Part of the modular post-install system (sourced by setup.sh).
+#
+# Can also be run standalone on any machine:
+#   sudo bash anki-progress.sh
+# (Docker must already be installed, and an anki-sync-server instance must
+# already exist on the same box, when run standalone)
+
+# ── Standalone bootstrap ──────────────────────────────────────────────────────
+if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
+    [[ "$(id -u)" == "0" ]] || { echo "Run with sudo: sudo bash $0"; exit 1; }
+
+    _SELF_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+    _COMMON="$_SELF_DIR/../lib/common.sh"
+
+    if [[ -f "$_COMMON" ]]; then
+        # shellcheck source=../lib/common.sh
+        source "$_COMMON"
+    else
+        log_info()    { echo -e "\033[0;34m[INFO]\033[0m $*"; }
+        log_success() { echo -e "\033[0;32m[OK]\033[0m $*"; }
+        log_warning() { echo -e "\033[1;33m[WARN]\033[0m $*"; }
+        log_error()   { echo -e "\033[0;31m[ERROR]\033[0m $*" >&2; }
+
+        require_docker() {
+            command -v docker &>/dev/null || {
+                log_error "Docker not found. Install it first:"
+                log_error "  curl -fsSL https://get.docker.com | sudo sh"
+                return 1
+            }
+            docker compose version &>/dev/null || {
+                log_error "Docker Compose plugin missing:"
+                log_error "  sudo apt-get install -y docker-compose-plugin"
+                return 1
+            }
+        }
+
+        ensure_docker_dir_ownership() {
+            chown -R "$ACTUAL_USER:$ACTUAL_USER" "$@" 2>/dev/null || true
+        }
+
+        port_in_use() {
+            local _port="$1" _proto="${2:-tcp}"
+            local _flag="-tlnH"
+            [ "$_proto" = "udp" ] && _flag="-ulnH"
+            ss "$_flag" "sport = :${_port}" 2>/dev/null | grep -q .
+        }
+
+        find_free_port() {
+            local _varname="$1" _port="$2" _proto="${3:-tcp}"
+            while port_in_use "$_port" "$_proto"; do
+                _port=$((_port + 1))
+            done
+            eval "$_varname='$_port'"
+        }
+
+        prompt_text() {
+            local _q="$1" _def="$2" _var="$3" _r
+            [[ "${UNATTENDED:-false}" == "true" ]] && { eval "$_var='$_def'"; return; }
+            read -r -p "  $_q " _r
+            eval "$_var='${_r:-$_def}'"
+        }
+
+        prompt_yn() {
+            local _q="$1" _def="$2" _var="$3" _r
+            [[ "${UNATTENDED:-false}" == "true" ]] && { eval "$_var='$_def'"; return; }
+            read -r -p "  $_q " _r
+            eval "$_var='${_r:-$_def}'"
+        }
+
+        prompt_reinstall_mode() {
+            local _var="$1" _r
+            if [[ "${UNATTENDED:-false}" == "true" ]]; then eval "$_var='cancel'"; return; fi
+            echo "  Already installed."
+            read -r -p "  (u)pdate / (f)resh reinstall / (c)ancel [c]: " _r
+            case "${_r,,}" in
+                u|update) eval "$_var='update'" ;;
+                f|fresh)  eval "$_var='fresh'"  ;;
+                *)        eval "$_var='cancel'" ;;
+            esac
+        }
+
+        configure_caddy_for_service() {
+            local _name="$1" _upstream="$2" _subdomain="$3" _extra="${4:-}"
+            local _caddy_dir="$DOCKER_DIR/caddy"
+            local _caddyfile="$_caddy_dir/Caddyfile"
+            local _display_port="${_upstream##*:}"
+
+            local _mode="none"
+            [[ -d "$_caddy_dir" ]] && _mode="local"
+            [[ -n "${CADDY_REMOTE_HOST:-}" ]] && [[ "$_mode" != "local" ]] && _mode="remote"
+            [[ "$_mode" == "none" ]] && {
+                log_info "Access $_name directly on port $_display_port."
+                return 0
+            }
+
+            echo ""
+            local _do_caddy=""
+            if [[ "$_mode" == "remote" ]]; then
+                log_info "Remote Caddy configured (${CADDY_REMOTE_HOST})."
+                log_info "A snippet file will be saved to ~/docker/caddy-snippets/."
+            fi
+            read -r -p "  Configure Caddy reverse proxy for $_name? [y/N]: " _do_caddy
+            [[ "${_do_caddy,,}" == "y" ]] || {
+                log_info "Skipping — access at: http://localhost:$_display_port"
+                return 0
+            }
+
+            local _default_domain=""
+            if [[ -n "${SITE_DOMAIN:-}" ]] && [[ "$SITE_DOMAIN" != "example.com" ]]; then
+                _default_domain="${_subdomain}.${SITE_DOMAIN}"
+                log_info "Default: $_default_domain"
+            fi
+            local _domain=""
+            read -r -p "  Domain [${_default_domain:-required}]: " _domain
+            _domain="${_domain:-$_default_domain}"
+            [[ -n "$_domain" ]] || { log_warning "No domain entered — skipping Caddy."; return 0; }
+
+            local _block_upstream="$_upstream"
+            if [[ "$_mode" == "remote" ]]; then
+                _block_upstream="${CADDY_REMOTE_HOST}:${_display_port}"
+            fi
+
+            local _site_block
+            _site_block="$(cat << CBLOCK
+
+# $_name
+${_domain} {
+    reverse_proxy ${_block_upstream}
+
+    header {
+        Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
+        X-Content-Type-Options "nosniff"
+        X-Frame-Options "SAMEORIGIN"
+        Referrer-Policy "strict-origin-when-cross-origin"
+    }
+
+    log {
+        output file /var/log/caddy/${_domain}.log
+        format json
+    }
+${_extra}
+}
+CBLOCK
+)"
+
+            if [[ "$_mode" == "local" ]]; then
+                if [[ -f "$_caddyfile" ]]; then
+                    local _bk="$_caddy_dir/Caddyfile.backup.$(date +%Y%m%d-%H%M%S)"
+                    cp "$_caddyfile" "$_bk"
+                    log_info "Backed up Caddyfile to $(basename "$_bk")"
+                else
+                    touch "$_caddyfile"
+                fi
+
+                if grep -q "^${_domain}" "$_caddyfile" 2>/dev/null; then
+                    log_warning "$_domain already in Caddyfile"
+                    local _ow=""
+                    read -r -p "  Overwrite? [y/N]: " _ow
+                    [[ "${_ow,,}" == "y" ]] || { log_info "Keeping existing entry."; return 0; }
+                    sed -i "/^${_domain}/,/^}/d" "$_caddyfile"
+                fi
+
+                printf '%s\n' "$_site_block" >> "$_caddyfile"
+                log_success "Added $_domain to Caddyfile"
+                docker exec caddy caddy fmt --overwrite /etc/caddy/Caddyfile 2>/dev/null || true
+                if docker exec caddy caddy reload --config /etc/caddy/Caddyfile 2>/dev/null; then
+                    log_success "$_name accessible at: https://$_domain"
+                else
+                    log_warning "Reload failed — check: docker logs caddy"
+                fi
+            else
+                local _snippet_dir="$DOCKER_DIR/caddy-snippets"
+                local _snippet_file="$_snippet_dir/${_subdomain}.caddy"
+                mkdir -p "$_snippet_dir"
+                printf '%s\n' "$_site_block" > "$_snippet_file"
+                chown "$ACTUAL_USER:$ACTUAL_USER" "$_snippet_file" 2>/dev/null || true
+                log_success "Snippet saved: $_snippet_file"
+            fi
+        }
+        write_readme() {
+            local _dir="$1"; shift
+            mkdir -p "$_dir"
+            cat > "$_dir/README.md"
+        }
+        backup_if_exists() {
+            local _file="$1"
+            [ -f "$_file" ] || return 0
+            cp -p "$_file" "${_file}.bak.$(date +%Y%m%d-%H%M%S)" 2>/dev/null
+        }
+    fi
+
+    ACTUAL_USER="${ACTUAL_USER:-${SUDO_USER:-$USER}}"
+    ACTUAL_HOME="$(getent passwd "$ACTUAL_USER" 2>/dev/null | cut -d: -f6 || echo "${HOME:-/root}")"
+    DOCKER_DIR="${DOCKER_DIR:-$ACTUAL_HOME/docker}"
+    DRY_RUN="${DRY_RUN:-false}"
+    UNATTENDED="${UNATTENDED:-false}"
+    SITE_TZ="${SITE_TZ:-$(cat /etc/timezone 2>/dev/null || echo UTC)}"
+    SITE_DOMAIN="${SITE_DOMAIN:-example.com}"
+    SITE_CADDY_NET="${SITE_CADDY_NET:-caddy_net}"
+
+    register_service() { :; }
+    _RUN_STANDALONE=1
+fi
+# ─────────────────────────────────────────────────────────────────────────────
+
+register_service anki-progress utilities "Family Anki study-progress dashboard + ntfy 'started studying' notifications (reads an anki-sync-server instance's data read-only)" 8099
+
+install_anki-progress() {
+    require_docker || return 1
+    log_info "Installing Anki Progress Dashboard..."
+
+    # ── Dependency: needs an anki-sync-server instance already installed ────
+    # Meaningless on its own — see CLAUDE.md's "Chaining into another
+    # service" section. Only chains one direction: anki-progress requires
+    # anki-sync-server, never the reverse.
+    local _sync_dirs=()
+    local _d
+    for _d in "$DOCKER_DIR"/anki-sync-server*; do
+        [ -d "$_d" ] && _sync_dirs+=("$(basename "$_d")")
+    done
+    if [ "${#_sync_dirs[@]}" -eq 0 ]; then
+        log_error "No anki-sync-server install found — this dashboard reads its data directly."
+        log_error "Install it first: sudo ./setup.sh anki-sync-server"
+        return 1
+    fi
+
+    local SYNC_INSTANCE="${_sync_dirs[0]}"
+    if [ "${#_sync_dirs[@]}" -gt 1 ] && [ "$UNATTENDED" != true ]; then
+        echo ""
+        echo "  Multiple anki-sync-server instances found:"
+        local i
+        for i in "${!_sync_dirs[@]}"; do
+            echo "    $((i + 1))) ${_sync_dirs[$i]}"
+        done
+        local _choice=""
+        prompt_text "  Which one should this dashboard monitor? [1]:" "1" _choice
+        if [[ "$_choice" =~ ^[0-9]+$ ]] && [ "$_choice" -ge 1 ] && [ "$_choice" -le "${#_sync_dirs[@]}" ]; then
+            SYNC_INSTANCE="${_sync_dirs[$((_choice - 1))]}"
+        fi
+    fi
+    local SYNC_DATA_DIR="$DOCKER_DIR/$SYNC_INSTANCE/data"
+
+    # ── Instance selection (of this dashboard itself) ───────────────────────
+    # A second instance is a real use case (e.g. a second household with its
+    # own anki-sync-server and its own dashboard) — same multi-instance
+    # pattern as every other service here (see CLAUDE.md).
+    local AP_DIR="$DOCKER_DIR/anki-progress"
+    local INSTANCE_SUFFIX="" CONTAINER="anki-progress"
+    local WEB_PORT="8099"
+
+    if [ "$DRY_RUN" = true ]; then
+        echo "[DRY-RUN] Would verify an anki-sync-server instance exists ($SYNC_INSTANCE found)"
+        echo "[DRY-RUN] Would offer to add a new, separate instance if one already exists"
+        echo "[DRY-RUN] Would create $AP_DIR(-<name>) with app.py, Dockerfile, docker-compose.yml"
+        echo "[DRY-RUN] Would prompt for ntfy URL/topic and notification timing"
+        echo "[DRY-RUN] Would auto-scan for a free host port"
+        return 0
+    fi
+
+    if [ -d "$AP_DIR" ]; then
+        echo ""
+        echo "  Anki Progress Dashboard is already installed at $AP_DIR."
+        echo "    1) Manage that install (update / full reinstall / cancel)"
+        echo "    2) Add a NEW, separate dashboard instance alongside it"
+        echo ""
+        local _TOP_CHOICE=""
+        prompt_text "  Choice [1/2]:" "1" _TOP_CHOICE
+        if [ "$_TOP_CHOICE" = "2" ]; then
+            local _suffix=""
+            while true; do
+                prompt_text "  Short name for the new instance (letters/numbers/hyphens):" "" _suffix
+                _suffix="$(echo "$_suffix" | tr -cs 'a-zA-Z0-9-' '-' | sed 's/^-*//;s/-*$//')"
+                if [ -z "$_suffix" ]; then
+                    log_warning "Name can't be empty."; continue
+                fi
+                if [ -d "$DOCKER_DIR/anki-progress-$_suffix" ]; then
+                    log_warning "anki-progress-$_suffix already exists — pick another name."; continue
+                fi
+                break
+            done
+            INSTANCE_SUFFIX="$_suffix"
+            AP_DIR="$DOCKER_DIR/anki-progress-$_suffix"
+            CONTAINER="anki-progress-$_suffix"
+            log_info "New instance: $AP_DIR"
+        else
+            if [[ -f "$AP_DIR/docker-compose.yml" ]]; then
+                local MODE=""
+                prompt_reinstall_mode MODE
+                case "$MODE" in
+                    update)
+                        log_info "Refreshing app code + rebuilding the image — ntfy config and Caddy setup are left as-is."
+                        ( cd "$AP_DIR" && docker compose up -d --build ) \
+                            && log_success "Anki Progress Dashboard refreshed" \
+                            || log_warning "Refresh failed — check: docker compose -f $AP_DIR/docker-compose.yml logs"
+                        return 0
+                        ;;
+                    cancel)
+                        log_info "Leaving the existing install as-is."
+                        return 0
+                        ;;
+                    fresh) ;;
+                esac
+            fi
+        fi
+    fi
+
+    find_free_port WEB_PORT "$WEB_PORT"
+
+    # ── ntfy ──────────────────────────────────────────────────────────────
+    # If ntfy is installed locally, reach it directly over caddy_net by
+    # container name — avoids a round trip through the public internet for
+    # a purely internal notification. Otherwise ask for a full URL (a
+    # remote/self-hosted instance elsewhere, or public ntfy.sh).
+    local NTFY_URL="" NTFY_TOPIC=""
+    if [ -d "$DOCKER_DIR/ntfy" ]; then
+        log_info "Local ntfy install detected — reaching it directly over caddy_net."
+        NTFY_URL="http://ntfy:80"
+    else
+        prompt_text "  ntfy server URL (e.g. https://ntfy.yourdomain.com, or https://ntfy.sh):" "https://ntfy.sh" NTFY_URL
+    fi
+    prompt_text "  ntfy topic to publish 'started studying' notifications to:" "family-anki" NTFY_TOPIC
+
+    local SESSION_GAP_MINUTES="" NOTIFY_DELAY_MINUTES=""
+    prompt_text "  Minutes of inactivity that counts as a new study session starting:" "30" SESSION_GAP_MINUTES
+    prompt_text "  Minutes after a session starts to send the notification:" "10" NOTIFY_DELAY_MINUTES
+
+    mkdir -p "$AP_DIR/state"
+    ensure_docker_dir_ownership "$AP_DIR"
+    cd "$AP_DIR" || return 1
+
+    # Mirrors configure_caddy_for_service's own mode resolution — only
+    # "local" joins caddy_net.
+    local _CADDY_MODE="${CADDY_MODE:-none}"
+    [ "$_CADDY_MODE" = "none" ] && [ -d "$DOCKER_DIR/caddy" ] && _CADDY_MODE="local"
+    [ "$_CADDY_MODE" = "none" ] && [ -n "${CADDY_REMOTE_HOST:-}" ] && _CADDY_MODE="remote"
+
+    local _CADDY_NET_BLOCK=""
+    local _CADDY_NET_SECTION=""
+    if [ "$_CADDY_MODE" = "local" ]; then
+        _CADDY_NET_BLOCK="    networks:
+      - caddy_net
+"
+        _CADDY_NET_SECTION="
+networks:
+  caddy_net:
+    external: true
+    name: ${SITE_CADDY_NET:-caddy_net}
+"
+    fi
+
+    backup_if_exists app.py
+    cat > app.py << 'PYEOF'
+#!/usr/bin/env python3
+"""Family Anki progress dashboard + ntfy "started studying" notifications.
+
+Reads every account's collection.anki2 directly (READ-ONLY — never opens for
+write, so it can't corrupt live data the sync server or a client is using)
+from the anki-sync-server's data directory, and:
+
+  1. Serves a small web dashboard (reviews today/week, accuracy, streak,
+     last active) per account.
+  2. Runs a background loop that detects when a new study session starts
+     (first review after a gap of SESSION_GAP_MINUTES with no reviews) and
+     sends one ntfy notification NOTIFY_DELAY_MINUTES after that session
+     started, if the session is still going (i.e. more reviews happened
+     after the initial one) — not on every single review.
+
+All configuration (NTFY_URL, NTFY_TOPIC, SESSION_GAP_MINUTES,
+NOTIFY_DELAY_MINUTES, ANKI_DATA_DIR, STATE_FILE) comes from environment
+variables, set in docker-compose.yml / .env by the installer — nothing to
+hand-edit in this file.
+"""
+import glob
+import json
+import os
+import sqlite3
+import threading
+import time
+from datetime import datetime, timezone
+
+import requests
+from flask import Flask, render_template_string
+
+NTFY_URL = os.environ.get("NTFY_URL", "https://ntfy.example.com")
+NTFY_TOPIC = os.environ.get("NTFY_TOPIC", "family-anki")
+
+SESSION_GAP_MINUTES = int(os.environ.get("SESSION_GAP_MINUTES", 30))
+NOTIFY_DELAY_MINUTES = int(os.environ.get("NOTIFY_DELAY_MINUTES", 10))
+POLL_INTERVAL_SECONDS = 60
+
+ANKI_DATA_DIR = os.environ.get("ANKI_DATA_DIR", "/anki-data")
+STATE_FILE = os.environ.get("STATE_FILE", "/app/state/notify_state.json")
+
+app = Flask(__name__)
+
+
+def find_collections():
+    """{username: path-to-collection-file} for every account directory found.
+    Globs for *.anki2 rather than assuming the exact filename, since that's
+    an implementation detail of the sync server we shouldn't hardcode."""
+    result = {}
+    if not os.path.isdir(ANKI_DATA_DIR):
+        return result
+    for entry in sorted(os.listdir(ANKI_DATA_DIR)):
+        user_dir = os.path.join(ANKI_DATA_DIR, entry)
+        if not os.path.isdir(user_dir):
+            continue
+        matches = glob.glob(os.path.join(user_dir, "*.anki2"))
+        if matches:
+            result[entry] = matches[0]
+    return result
+
+
+def read_revlog_ids_eases(path):
+    """Returns a list of (epoch_ms, ease) tuples sorted by time, read-only.
+    Opening with mode=ro is what makes this safe to run alongside a live
+    sync server — it never takes a write lock, so it can't corrupt or
+    block the account that's actually in use."""
+    uri = f"file:{path}?mode=ro"
+    con = sqlite3.connect(uri, uri=True)
+    try:
+        rows = con.execute("SELECT id, ease FROM revlog ORDER BY id ASC").fetchall()
+    except sqlite3.OperationalError:
+        rows = []
+    finally:
+        con.close()
+    return rows
+
+
+def compute_stats(revlog_rows, now_ms):
+    """Pure function over a list of (epoch_ms, ease) — kept separate from
+    any file/DB access so it can be unit-tested with synthetic data."""
+    if not revlog_rows:
+        return {
+            "total_reviews": 0, "reviews_today": 0, "reviews_week": 0,
+            "accuracy_pct": None, "streak_days": 0, "last_active": None,
+        }
+
+    day_ms = 24 * 60 * 60 * 1000
+    today_day = now_ms // day_ms
+    today_start = today_day * day_ms
+    week_start = today_start - 6 * day_ms
+
+    reviews_today = sum(1 for ts, _ in revlog_rows if ts >= today_start)
+    reviews_week = sum(1 for ts, _ in revlog_rows if ts >= week_start)
+    total = len(revlog_rows)
+    correct = sum(1 for _, ease in revlog_rows if ease != 1)  # ease 1 = "Again" = a miss
+    accuracy_pct = round(100 * correct / total, 1) if total else None
+
+    # Streak: consecutive calendar days with >=1 review, walking backward
+    # from today. Still "alive" through yesterday if today has no reviews
+    # yet (so it doesn't reset to 0 first thing each morning) — but not if
+    # the most recent review is 2+ days old. review_days is unique/sorted
+    # descending, so any day that isn't exactly "expected" means a gap.
+    review_days = sorted({ts // day_ms for ts, _ in revlog_rows}, reverse=True)
+    streak = 0
+    if review_days and review_days[0] in (today_day, today_day - 1):
+        expected = review_days[0]
+        for d in review_days:
+            if d == expected:
+                streak += 1
+                expected -= 1
+            else:
+                break
+
+    last_active = max(ts for ts, _ in revlog_rows)
+
+    return {
+        "total_reviews": total,
+        "reviews_today": reviews_today,
+        "reviews_week": reviews_week,
+        "accuracy_pct": accuracy_pct,
+        "streak_days": streak,
+        "last_active": last_active,
+    }
+
+
+def detect_current_session_start(revlog_rows, now_ms):
+    """Walk backwards from the most recent review; the session start is the
+    earliest review such that every gap between consecutive reviews from
+    there to now is < SESSION_GAP_MINUTES. Returns None if the most recent
+    review itself is older than the gap threshold (no session "in progress")."""
+    if not revlog_rows:
+        return None
+    gap_ms = SESSION_GAP_MINUTES * 60 * 1000
+    last_ts = revlog_rows[-1][0]
+    if now_ms - last_ts > gap_ms:
+        return None  # most recent review is old news, not an active session
+
+    session_start = last_ts
+    for ts, _ in reversed(revlog_rows[:-1]):
+        if session_start - ts > gap_ms:
+            break
+        session_start = ts
+    return session_start
+
+
+DASHBOARD_TEMPLATE = """
+<!doctype html>
+<title>Family Anki Progress</title>
+<meta http-equiv="refresh" content="60">
+<style>
+  body { font-family: Arial, sans-serif; background: #f4f6f8; margin: 0; padding: 24px; }
+  h1 { color: #333; }
+  .grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
+  .card { background: white; border-radius: 10px; padding: 18px 20px; box-shadow: 0 1px 4px rgba(0,0,0,0.1); }
+  .card h2 { margin: 0 0 10px 0; font-size: 20px; }
+  .stat { display: flex; justify-content: space-between; margin: 4px 0; font-size: 15px; }
+  .stat b { color: #1c4587; }
+  .empty { color: #888; font-style: italic; }
+</style>
+<h1>Family Anki Progress</h1>
+<div class="grid">
+  {% for user, s in stats.items() %}
+  <div class="card">
+    <h2>{{ user }}</h2>
+    {% if s.total_reviews == 0 %}
+      <div class="empty">No reviews yet</div>
+    {% else %}
+      <div class="stat"><span>Reviews today</span><b>{{ s.reviews_today }}</b></div>
+      <div class="stat"><span>Reviews this week</span><b>{{ s.reviews_week }}</b></div>
+      <div class="stat"><span>Accuracy</span><b>{{ s.accuracy_pct }}%</b></div>
+      <div class="stat"><span>Streak</span><b>{{ s.streak_days }} day{{ 's' if s.streak_days != 1 else '' }}</b></div>
+      <div class="stat"><span>Last active</span><b>{{ s.last_active_str }}</b></div>
+    {% endif %}
+  </div>
+  {% endfor %}
+</div>
+"""
+
+
+@app.route("/")
+def dashboard():
+    now_ms = int(time.time() * 1000)
+    stats = {}
+    for user, path in find_collections().items():
+        rows = read_revlog_ids_eases(path)
+        s = compute_stats(rows, now_ms)
+        if s["last_active"]:
+            s["last_active_str"] = datetime.fromtimestamp(
+                s["last_active"] / 1000, tz=timezone.utc
+            ).astimezone().strftime("%b %-d, %-I:%M %p")
+        else:
+            s["last_active_str"] = "—"
+        stats[user] = s
+    return render_template_string(DASHBOARD_TEMPLATE, stats=stats)
+
+
+def load_notify_state():
+    if os.path.isfile(STATE_FILE):
+        with open(STATE_FILE) as f:
+            return json.load(f)
+    return {}
+
+
+def save_notify_state(state):
+    os.makedirs(os.path.dirname(STATE_FILE), exist_ok=True)
+    with open(STATE_FILE, "w") as f:
+        json.dump(state, f)
+
+
+def send_ntfy(message):
+    try:
+        requests.post(f"{NTFY_URL.rstrip('/')}/{NTFY_TOPIC}",
+                       data=message.encode("utf-8"), timeout=10)
+    except requests.RequestException as e:
+        print(f"[ntfy] failed to send: {e}")
+
+
+def notifier_loop():
+    state = load_notify_state()
+    while True:
+        now_ms = int(time.time() * 1000)
+        for user, path in find_collections().items():
+            rows = read_revlog_ids_eases(path)
+            session_start = detect_current_session_start(rows, now_ms)
+            entry = state.get(user, {})
+
+            if session_start is None:
+                # No active session right now — clear tracking so the next
+                # real session starts fresh.
+                if entry:
+                    state[user] = {}
+                continue
+
+            if entry.get("session_start") != session_start:
+                # A new session started (different from whatever we were
+                # tracking) — start the countdown over.
+                state[user] = {"session_start": session_start, "notified": False}
+                entry = state[user]
+
+            elapsed_minutes = (now_ms - session_start) / 60000
+            if not entry.get("notified") and elapsed_minutes >= NOTIFY_DELAY_MINUTES:
+                send_ntfy(f"{user} started studying {NOTIFY_DELAY_MINUTES} minutes ago and is still going.")
+                entry["notified"] = True
+
+        save_notify_state(state)
+        time.sleep(POLL_INTERVAL_SECONDS)
+
+
+if __name__ == "__main__":
+    threading.Thread(target=notifier_loop, daemon=True).start()
+    app.run(host="0.0.0.0", port=5000)
+PYEOF
+
+    backup_if_exists Dockerfile
+    cat > Dockerfile << 'DOCKEREOF'
+FROM python:3.12-slim
+WORKDIR /app
+RUN pip install --no-cache-dir flask requests
+COPY app.py .
+CMD ["python3", "app.py"]
+DOCKEREOF
+
+    backup_if_exists docker-compose.yml
+    cat > docker-compose.yml << COMPOSEEOF
+name: $CONTAINER
+
+services:
+  $CONTAINER:
+    build: .
+    container_name: $CONTAINER
+    hostname: $CONTAINER
+    restart: unless-stopped
+    env_file: .env
+    environment:
+      - ANKI_DATA_DIR=/anki-data
+      - STATE_FILE=/app/state/notify_state.json
+    volumes:
+      # Read-only — this container only ever reads collection files (see
+      # app.py's read_revlog_ids_eases, which opens SQLite in mode=ro),
+      # never writes, so it can't corrupt live data the sync server or a
+      # client is using.
+      - $SYNC_DATA_DIR:/anki-data:ro
+      - ./state:/app/state
+    ports:
+      - "${WEB_PORT}:5000"
+${_CADDY_NET_BLOCK}${_CADDY_NET_SECTION}
+COMPOSEEOF
+
+    backup_if_exists .env
+    cat > .env << ENVEOF
+NTFY_URL=$NTFY_URL
+NTFY_TOPIC=$NTFY_TOPIC
+SESSION_GAP_MINUTES=$SESSION_GAP_MINUTES
+NOTIFY_DELAY_MINUTES=$NOTIFY_DELAY_MINUTES
+ENVEOF
+    chmod 600 .env
+
+    chown -R "$ACTUAL_USER:$ACTUAL_USER" "$AP_DIR"
+
+    echo ""
+    log_success "Anki Progress Dashboard${INSTANCE_SUFFIX:+ ($INSTANCE_SUFFIX)} configured at $AP_DIR (port $WEB_PORT)"
+    log_info "Monitoring: $SYNC_INSTANCE"
+
+    local START=""
+    prompt_yn "Start Anki Progress Dashboard${INSTANCE_SUFFIX:+ ($INSTANCE_SUFFIX)} now? (y/n):" "y" START
+    if [ "$START" = "y" ] || [ "$START" = "Y" ]; then
+        docker compose up -d --build \
+            && log_success "Anki Progress Dashboard started" \
+            || log_warning "Start failed — check: docker compose logs"
+    fi
+
+    # ── Caddy + Authelia-aware protection ────────────────────────────────────
+    # This dashboard shows every family member's personal study activity —
+    # same "sensitive, protect by default" reasoning as
+    # services/security-dashboard.sh: auto-use local Authelia if present, no
+    # prompt needed; otherwise warn clearly and offer a remote instance,
+    # since leaving it open is a real privacy tradeoff, not a neutral default.
+    local EXTRA_BLOCK=""
+    if [ -d "$DOCKER_DIR/authelia" ]; then
+        EXTRA_BLOCK="    import authelia"
+        log_info "Local Authelia detected — protecting with it."
+    else
+        log_warning "No local Authelia found. This dashboard shows every family"
+        log_warning "member's personal study activity — recommend protecting it"
+        log_warning "before exposing it publicly."
+        local _use_remote=""
+        prompt_yn "  Protect with a remote Authelia instance (e.g. on a homelab)? (y/n):" "y" _use_remote
+        if [[ "$_use_remote" =~ ^[Yy]$ ]]; then
+            local _remote_authelia=""
+            prompt_text "  Remote Authelia address (bare host:port on a private network, or a full https:// URL on its own public domain+TLS):" "" _remote_authelia
+            if [ -n "$_remote_authelia" ]; then
+                EXTRA_BLOCK="    forward_auth ${_remote_authelia} {
+        uri /api/authz/forward-auth
+        copy_headers Remote-User Remote-Groups Remote-Name Remote-Email
+        header_up X-Forwarded-Method {method}
+        header_up X-Forwarded-Proto {scheme}
+        header_up X-Forwarded-Host {host}
+        header_up X-Forwarded-Uri {uri}
+    }"
+            fi
+        fi
+    fi
+
+    configure_caddy_for_service "Anki Progress Dashboard${INSTANCE_SUFFIX:+ ($INSTANCE_SUFFIX)}" "${CONTAINER}:5000" "anki-progress${INSTANCE_SUFFIX:+-$INSTANCE_SUFFIX}" "$EXTRA_BLOCK"
+
+    declare -F _authelia_scope_access >/dev/null 2>&1 && [ "${CADDY_SERVICE_CONFIGURED:-false}" = true ] \
+        && _authelia_scope_access "anki-progress" "$CADDY_SERVICE_DOMAIN"
+
+    write_readme "$AP_DIR" << MD
+# Anki Progress Dashboard${INSTANCE_SUFFIX:+ — $INSTANCE_SUFFIX}
+
+Read-only study-progress dashboard for the accounts on **$SYNC_INSTANCE**
+(reviews today/this week, accuracy, streak, last active), plus an ntfy
+notification sent ${NOTIFY_DELAY_MINUTES} minutes after a study session
+starts — defined as the first review after ${SESSION_GAP_MINUTES}+ minutes
+of inactivity, and only sent if the session is still going at that point
+(not on every single review, and not for a session that's already over).
+
+Reads collection files directly with SQLite's read-only mode — never opens
+them for write, so it can't corrupt or interfere with the live sync server
+or any client actively syncing.
+
+## Access
+- URL: $( [ "${CADDY_SERVICE_CONFIGURED:-false}" = true ] && echo "https://${CADDY_SERVICE_DOMAIN}/" || echo "http://localhost:${WEB_PORT}/" )
+
+## Config
+- \`$AP_DIR/.env\` — ntfy URL/topic, session-gap and notify-delay minutes
+- Edit and \`docker compose up -d\` to apply changes (no rebuild needed —
+  these are read at container start from environment variables)
+
+## Manage
+\`\`\`bash
+cd $AP_DIR
+docker compose up -d --build
+docker compose down
+docker compose logs -f
+\`\`\`
+MD
+}
+
+# ── Standalone execution ───────────────────────────────────────────────────
+if [[ "${_RUN_STANDALONE:-0}" == "1" ]]; then
+    install_anki-progress
+fi