Show cron expression and next run time on the groups page

The groups list only showed last-run info, so you had to open each
group to see whether it was scheduled. Attach each group's schedules
(with the next fire time) in groups_index and render them as new
"schedule" and "next run" columns; multiple schedules stack, disabled
ones are greyed with no next fire.

_schedules_with_next now also computes a relative next_fire_in label
("in 23h 43m"), shown on both the groups list and the group detail
page, and drops the empty %Z from the timestamp.

The groups template tolerates a missing g.schedules so the currently
running process (which auto-reloads templates but not app.py) keeps
rendering until it is restarted.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

pipekit/web/app.py

@@ -866,13 +866,31 @@ def _schedules_with_next(schedules: list[dict]) -> list[dict]:
         s = dict(s)
         try:
             cron = croniter(s["cron_expr"], now)
-            s["next_fire_at"] = cron.get_next(datetime).strftime("%Y-%m-%d %H:%M %Z")
+            nxt = cron.get_next(datetime)
+            s["next_fire_at"] = nxt.strftime("%Y-%m-%d %H:%M")
+            s["next_fire_in"] = _humanize_delta((nxt - now).total_seconds())
         except CroniterBadCronError:
             s["next_fire_at"] = "invalid expression"
+            s["next_fire_in"] = None
         result.append(s)
     return result
 
 
+def _humanize_delta(seconds: float) -> str:
+    """'in 3h 12m' style relative label for a positive second count."""
+    secs = int(max(seconds, 0))
+    days, rem = divmod(secs, 86400)
+    hours, rem = divmod(rem, 3600)
+    mins = rem // 60
+    if days:
+        return f"in {days}d {hours}h"
+    if hours:
+        return f"in {hours}h {mins}m"
+    if mins:
+        return f"in {mins}m"
+    return "in <1m"
+
+
 def _sanitize_identifier(name: str) -> str:
     """Lower-case a source column name and replace characters that aren't
     valid in an unquoted identifier with underscores."""
@@ -1338,6 +1356,7 @@ def groups_index(request: Request):
             g["last_run_at"] = None
             g["last_status"] = None
             g["last_duration_s"] = None
+        g["schedules"] = _schedules_with_next(repo.list_schedules_for_group(g["id"]))
     return _templates.TemplateResponse(
         request, "groups.html",
         _ctx(groups=groups),

pipekit/web/static/style.css

@@ -162,6 +162,8 @@ table.grid tr:hover td { background: #1c2128; }
 }
 .tag:hover { color: var(--accent); }
 
+.muted { color: var(--text-muted); }
+
 /* Labeled key-value rows (used in detail views) */
 dl.keyval {
     display: grid;

pipekit/web/templates/group_detail.html

@@ -76,7 +76,7 @@
             {% for s in schedules %}
                 <tr>
                     <td class="mono">{{ s.cron_expr }}</td>
-                    <td class="mono">{% if s.enabled %}{{ s.next_fire_at }}{% else %}—{% endif %}</td>
+                    <td class="mono">{% if s.enabled %}{{ s.next_fire_at }}{% if s.next_fire_in %} <span class="muted">({{ s.next_fire_in }})</span>{% endif %}{% else %}—{% endif %}</td>
                     <td class="mono">{{ s.last_fired_at | localtime }}</td>
                     <td>
                         {% if s.enabled %}

pipekit/web/templates/groups.html

@@ -18,6 +18,8 @@
                 <tr>
                     <th>name</th>
                     <th>members</th>
+                    <th>schedule</th>
+                    <th>next run</th>
                     <th>last run</th>
                     <th style="width:7em;text-align:right">duration</th>
                     <th style="width:9em">status</th>
@@ -29,6 +31,21 @@
                 <tr>
                     <td><a href="/groups/{{ g.id }}"><strong>{{ g.name }}</strong></a></td>
                     <td class="mono">{{ g.member_count }}</td>
+                    {% set scheds = g.schedules if g.schedules is iterable and g.schedules is not string else [] %}
+                    <td class="mono">
+                        {% for s in scheds %}
+                        <div{% if not s.enabled %} class="muted"{% endif %}>{{ s.cron_expr }}{% if not s.enabled %} (disabled){% endif %}</div>
+                        {% else %}
+                        <span class="muted">—</span>
+                        {% endfor %}
+                    </td>
+                    <td class="mono">
+                        {% for s in scheds %}
+                        <div>{% if s.enabled %}{{ s.next_fire_at }}{% if s.next_fire_in %} <span class="muted">({{ s.next_fire_in }})</span>{% endif %}{% else %}<span class="muted">—</span>{% endif %}</div>
+                        {% else %}
+                        <span class="muted">—</span>
+                        {% endfor %}
+                    </td>
                     <td class="mono">{{ g.last_run_at | localtime }}</td>
                     <td class="mono" style="text-align:right">{{ g.last_duration_s | duration }}</td>
                     <td>