fix: calendar nav settings cog, header padding, post nav admin link

- Calendar nav: fix Slots link URL, add admin cog for admins
- Calendar header: add left padding to calendar name
- Post nav: add settings cog linking to blog admin

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

templates/_types/calendar/_nav.html

@@ -1,8 +1,10 @@
 <!-- Desktop nav -->
 {% import 'macros/links.html' as links %}
 {% call links.link(
+  url_for('calendars.calendar.slots.get', calendar_slug=calendar.slug),
   hx_select_search,
   select_colours,
+  True,
   aclass=styles.nav_button
 ) %}
   <i class="fa fa-clock" aria-hidden="true"></i>
@@ -12,4 +14,5 @@
 {% endcall %}
 {% if g.rights.admin %}
     {% from 'macros/admin_nav.html' import admin_nav_item %}
+    {{ admin_nav_item(url_for('calendars.calendar.admin.admin', calendar_slug=calendar.slug)) }}
 {% endif %}

templates/_types/calendar/header/_header.html

@@ -1,7 +1,7 @@
 {% import 'macros/links.html' as links %}
 {% macro header_row(oob=False) %}
   {% call links.menu_row(id='calendar-row', oob=oob) %}
-      <div class="flex flex-col md:flex-row md:gap-2 items-center min-w-0">
+      <div class="flex flex-col md:flex-row md:gap-2 items-center min-w-0 px-3 py-2">
         <div class="flex flex-row items-center gap-2">
           <i class="fa fa-calendar"></i>
           <div class="shrink-0">

templates/_types/post/_nav.html

@@ -7,3 +7,8 @@
     {% endcall %}
   {% endfor %}
 {% endif %}
+{% if g.rights.admin %}
+  <a href="{{ coop_url('/' + post.slug + '/admin/') }}" class="{{styles.nav_button}}">
+    <i class="fa fa-cog" aria-hidden="true"></i>
+  </a>
+{% endif %}