{# The system page's engine-info block — cards + per-check table. A partial so
   the page's ~10s poll (?fragment=1, shared poll.js) can re-fetch and swap it
   without re-sending the header (mirrors _status_grid.html). #}
{% if info is none %}
    <p class="text-muted">The engine is not running.</p>
{% else %}
    <div class="row g-3 mb-3">
        <div class="col-auto">
            <div class="card"><div class="card-body">
                <div class="text-muted small">Started</div>
                <div>{{ info.started_at | localtime }}</div>
                <div class="text-muted small mt-2">Uptime</div>
                <div>{{ info.uptime_seconds | elapsed }}</div>
            </div></div>
        </div>
        <div class="col-auto">
            <div class="card"><div class="card-body">
                <div class="text-muted small">Worker threads</div>
                <div>{{ info.max_workers }}</div>
                <div class="text-muted small mt-2">Checks</div>
                <div>{{ info.check_count }}</div>
                <div class="text-muted small mt-2">Currently running</div>
                <div>{{ info.running }}</div>
            </div></div>
        </div>
        {# What the configuration declared, beside what the process is doing
           (ADR-0075). The declared figures are what startup measured the
           configuration against; the entries held is the count the engine's own
           `entries` line watches. A declaration that has drifted from the
           measurement is only visible if both are shown. #}
        <div class="col-auto">
            <div class="card"><div class="card-body">
                <div class="text-muted small">Declared load</div>
                <div>{{ "%.1f"|format(info.declared_workers) }}
                    <span class="text-muted">of {{ info.max_workers }} worker threads</span></div>
                <div class="text-muted small mt-2">Entries held</div>
                <div>{{ "{:,}".format(info.entries_held) }}
                    <span class="text-muted">of {{ "{:,}".format(info.entry_limit) }}{% if info.declared_entries %} · {{ "{:,}".format(info.declared_entries) }} declared{% endif %}</span></div>
            </div></div>
        </div>
    </div>

    {# The three schedule columns share one shape: a time of day (the
       configured timezone; the Started card anchors the date) plus a
       muted interval. Every interval on this page goes through `elapsed`
       (`little_sister.spans.format_span`) rather than being formatted where it
       is shown — which is how a quarter-hour wait came to read `in 812s` beside
       a two-minute run reading `115 s`. #}
    <table class="table table-sm align-middle">
        <thead>
            <tr><th>Check</th><th>Type</th><th>Frequency</th><th>Running</th><th>Next run</th><th>Last run</th><th>Declared</th></tr>
        </thead>
        <tbody>
            {% for c in info.checks %}
                <tr>
                    <td><a href="{{ url_for('status', branch=c.path | url_branch) }}">{{ c.path }}</a></td>
                    <td class="text-muted">{{ c.type_name }}</td>
                    <td>{{ c.frequency_seconds | duration }}</td>
                    <td>
                        {% if c.running_since %}
                            {{ c.running_since | localtime("%H:%M:%S") }}
                            <span class="text-muted">· {{ c.running_seconds | elapsed }}</span>
                        {% elif c.running %}
                            <span class="text-muted">queued</span>
                        {% endif %}
                    </td>
                    <td>
                        {{ c.next_run_at | localtime("%H:%M:%S") }}
                        <span class="text-muted">· in {{ c.next_in_seconds | elapsed }}{% if c.retrying %} · retry {{ c.retry_attempt }}/{{ c.retry_attempts }}{% endif %}</span>
                    </td>
                    <td>
                        {% if c.last_run_at %}
                            {{ c.last_run_at | localtime("%H:%M:%S") }}
                            <span class="text-muted">· {{ c.elapsed_seconds | elapsed }}</span>
                        {% else %}
                            —
                        {% endif %}
                    </td>
                    {# The type's own estimate, beside the run it is an estimate
                       of. A type that will not estimate says nothing, and the
                       cell is empty rather than zero — nothing declared is not
                       the same claim as nothing spent. #}
                    <td class="text-muted">
                        {% if c.expected_cost is not none %}{{ c.expected_cost | elapsed }}{% endif %}
                        {%- if c.expected_cost is not none and c.expected_entries is not none %} · {% endif %}
                        {%- if c.expected_entries is not none %}{{ "{:,}".format(c.expected_entries) }} entries{% endif %}
                        {%- if c.expected_cost is none and c.expected_entries is none %}—{% endif %}
                    </td>
                </tr>
            {% else %}
                <tr><td colspan="7" class="text-muted">No checks.</td></tr>
            {% endfor %}
        </tbody>
    </table>
{% endif %}