Merge conference sections into a single table so columns align

Replace three separate <table> elements with one shared table. The
conf_table macro becomes conf_rows which emits only <tr> elements;
Current/Future/Past section boundaries are dark header rows inside
the same <tbody>. With one colgroup the browser uses one shared
column-width calculation so all headings line up.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

templates/conference_list.html

@@ -68,6 +68,15 @@ tr.conf-hl > td {
 }
 
 /* Conference table */
+.conf-section-row td {
+  background: #343a40 !important;
+  color: #fff;
+  font-weight: 700;
+  font-size: 0.85em;
+  padding-top: 0.5rem;
+  padding-bottom: 0.4rem;
+  border-bottom: none;
+}
 .conf-month-row td {
   background: #e9ecef !important;
   font-weight: 600;
@@ -121,30 +130,12 @@ tr.conf-hl > td {
 {% endif %}
 {% endmacro %}
 
-{% macro conf_table(heading, item_list, badge) %}
+{% macro conf_rows(heading, item_list, badge) %}
 {% if item_list %}
 {% set count = item_list | length %}
-<h2>{{ heading }} <small class="text-muted fs-6 fw-normal">{{ count }} conference{{ "" if count == 1 else "s" }}</small></h2>
-<table class="table table-sm table-hover align-middle mb-4">
-  <colgroup>
-    <col style="width: 9rem">
-    <col>
-    <col style="width: 18rem">
-    <col style="width: 14rem">
-    <col style="width: 7rem">
-    <col style="width: 10rem">
-  </colgroup>
-  <thead class="table-light">
-    <tr>
-      <th>Dates</th>
-      <th>Conference</th>
-      <th>Topic</th>
-      <th>Location</th>
-      <th>CFP ends</th>
-      <th>Price</th>
+<tr class="conf-section-row">
+  <td colspan="6">{{ heading }} <span class="fw-normal opacity-75">{{ count }} conference{{ "" if count == 1 else "s" }}</span></td>
 </tr>
-  </thead>
-  <tbody>
 {% set ns = namespace(prev_month="") %}
 {% for item in item_list %}
   {% set month_label = item.start_date.strftime("%B %Y") %}
@@ -207,8 +198,6 @@ tr.conf-hl > td {
     </td>
   </tr>
 {% endfor %}
-  </tbody>
-</table>
 {% endif %}
 {% endmacro %}
 
@@ -219,9 +208,31 @@ tr.conf-hl > td {
 
   {{ render_timeline(timeline) }}
 
-  {{ conf_table("Current", current, "attending") }}
-  {{ conf_table("Future", future, "going") }}
-  {{ conf_table("Past", past|reverse|list, "went") }}
+  <table class="table table-sm table-hover align-middle">
+    <colgroup>
+      <col style="width: 9rem">
+      <col>
+      <col style="width: 18rem">
+      <col style="width: 14rem">
+      <col style="width: 7rem">
+      <col style="width: 10rem">
+    </colgroup>
+    <thead class="table-light">
+      <tr>
+        <th>Dates</th>
+        <th>Conference</th>
+        <th>Topic</th>
+        <th>Location</th>
+        <th>CFP ends</th>
+        <th>Price</th>
+      </tr>
+    </thead>
+    <tbody>
+      {{ conf_rows("Current", current, "attending") }}
+      {{ conf_rows("Future", future, "going") }}
+      {{ conf_rows("Past", past|reverse|list, "went") }}
+    </tbody>
+  </table>
 </div>
 
 <script>

web_view.py

@@ -484,9 +484,13 @@ def build_conference_timeline(
                 "width_pct": width_pct,
                 "key": f"{conf['start_date'].isoformat()}|{conf['name']}",
                 "label": (
+                    f"{conf['name']} ({conf['start_date'].strftime('%-d %b')})"
+                    if conf["start_date"] == conf["end_date"]
+                    else (
                         f"{conf['name']}"
                         f" ({conf['start_date'].strftime('%-d %b')}–"
                         f"{conf['end_date'].strftime('%-d %b')})"
+                    )
                 ),
             }
         )