Externalize sexp component templates and delete redundant HTML fragments

Move 24 defcomp definitions from Python string constants in components.py
to 7 grouped .sexp files under shared/sexp/templates/. Add load_sexp_dir()
to jinja_bridge.py for file-based loading. Migrate events and market
link-card fragment handlers from render_template to sexp. Delete 9
superseded Jinja HTML fragment templates.

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

events/bp/fragments/routes.py

@@ -176,6 +176,7 @@ def register():
 
     async def _link_card_handler():
         from shared.infrastructure.urls import events_url
+        from shared.sexp.jinja_bridge import sexp as render_sexp
 
         slug = request.args.get("slug", "")
         keys_raw = request.args.get("keys", "")
@@ -193,12 +194,10 @@ def register():
                         g.s, "page", post.id,
                     )
                     cal_names = ", ".join(c.name for c in calendars) if calendars else ""
-                    parts.append(await render_template(
-                        "fragments/link_card.html",
-                        title=post.title,
-                        feature_image=post.feature_image,
-                        calendar_names=cal_names,
-                        link=events_url(f"/{post.slug}"),
+                    parts.append(render_sexp(
+                        '(~link-card :title title :image image :subtitle subtitle :link link)',
+                        title=post.title, image=post.feature_image,
+                        subtitle=cal_names, link=events_url(f"/{post.slug}"),
                     ))
             return "\n".join(parts)
 
@@ -213,12 +212,10 @@ def register():
             g.s, "page", post.id,
         )
         cal_names = ", ".join(c.name for c in calendars) if calendars else ""
-        return await render_template(
-            "fragments/link_card.html",
-            title=post.title,
-            feature_image=post.feature_image,
-            calendar_names=cal_names,
-            link=events_url(f"/{post.slug}"),
+        return render_sexp(
+            '(~link-card :title title :image image :subtitle subtitle :link link)',
+            title=post.title, image=post.feature_image,
+            subtitle=cal_names, link=events_url(f"/{post.slug}"),
         )
 
     _handlers["link-card"] = _link_card_handler

events/templates/fragments/container_nav_calendars.html

@@ -1,10 +0,0 @@
-{# Calendar links nav — served as fragment from events app #}
-{% for calendar in calendars %}
-  {% set local_href=events_url('/' + post_slug + '/calendars/' + calendar.slug + '/') %}
-  <a
-    href="{{ local_href }}"
-    class="{{styles.nav_button_less_pad}}">
-    <i class="fa fa-calendar" aria-hidden="true"></i>
-    <div>{{calendar.name}}</div>
-  </a>
-{% endfor %}

events/templates/fragments/container_nav_entries.html

@@ -1,28 +0,0 @@
-{# Calendar entries nav — served as fragment from events app #}
-{% for entry in entries %}
-  {% set _entry_path = '/' + post_slug + '/calendars/' + entry.calendar_slug + '/' + entry.start_at.year|string + '/' + entry.start_at.month|string + '/' + entry.start_at.day|string + '/entries/' + entry.id|string + '/' %}
-  <a
-    href="{{ events_url(_entry_path) }}"
-    class="{{styles.nav_button_less_pad}}"
-  >
-    <div class="w-8 h-8 rounded bg-stone-200 flex-shrink-0"></div>
-    <div class="flex-1 min-w-0">
-      <div class="font-medium truncate">{{ entry.name }}</div>
-      <div class="text-xs text-stone-600 truncate">
-        {{ entry.start_at.strftime('%b %d, %Y at %H:%M') }}
-        {% if entry.end_at %} – {{ entry.end_at.strftime('%H:%M') }}{% endif %}
-      </div>
-    </div>
-  </a>
-{% endfor %}
-
-{# Infinite scroll sentinel — URL points back to the consumer app #}
-{% if has_more and paginate_url_base %}
-  <div id="entries-load-sentinel-{{ page }}"
-       hx-get="{{ paginate_url_base }}?page={{ page + 1 }}"
-       hx-trigger="intersect once"
-       hx-swap="beforebegin"
-       _="on htmx:afterRequest trigger scroll on #associated-entries-container"
-       class="flex-shrink-0 w-1">
-  </div>
-{% endif %}

events/templates/fragments/link_card.html

@@ -1,17 +0,0 @@
-<a href="{{ link }}" class="block rounded border border-stone-200 bg-white hover:bg-stone-50 transition-colors no-underline" data-fragment="link-card" data-app="events" data-hx-disable>
-  <div class="flex flex-row items-start gap-3 p-3">
-    {% if feature_image %}
-      <img src="{{ feature_image }}" alt="" class="flex-shrink-0 w-16 h-16 rounded object-cover">
-    {% else %}
-      <div class="flex-shrink-0 w-16 h-16 rounded bg-stone-100 flex items-center justify-center text-stone-400">
-        <i class="fas fa-calendar text-lg"></i>
-      </div>
-    {% endif %}
-    <div class="flex-1 min-w-0">
-      <div class="font-medium text-stone-900 text-sm clamp-2">{{ title }}</div>
-      {% if calendar_names %}
-        <div class="text-xs text-stone-500 mt-0.5">{{ calendar_names }}</div>
-      {% endif %}
-    </div>
-  </div>
-</a>