feat: add booking time ranges and repeating series

templates/booking/_modal_edit.html.twig

@@ -0,0 +1,56 @@
+{#
+    Editing one occurrence. For a booking that belongs to a series this is the "override": only
+    this day moves, the rest of the series is untouched and the occurrence is flagged as
+    differing from it.
+
+    Releasing lives here too rather than on the floor plan, so the SVG needs no confirm dialogs
+    or inline CSRF tokens -- clicking your own desk always just opens this.
+#}
+{% extends 'htmx_modal.html.twig' %}
+
+{% block title %}{{ resource.label }} ändern{% endblock %}
+
+{% block content %}
+    {{ form_start(form, { attr: {
+        'hx-post': form.vars.action,
+        'hx-target': '#htmx-modal',
+        'hx-swap': 'outerHTML',
+    } }) }}
+        {{ form_errors(form) }}
+
+        <p class="pb-4 text-sm text-gray-500">
+            {{ resource.type.label }} · {{ booking.date|format_datetime(pattern: 'EEEE, d. MMMM y') }}
+        </p>
+
+        {% if booking.partOfSeries %}
+            <div class="mb-4 rounded-md bg-gray-50 px-4 py-3 text-sm">
+                Teil einer Serie: {{ booking.series.describe }}.
+                <span class="text-gray-500">Eine Änderung hier gilt nur für diesen Tag.</span>
+            </div>
+        {% endif %}
+
+        {% include 'booking/_fields.html.twig' %}
+
+        <div class="flex flex-wrap justify-between gap-2 pt-6">
+            {# type="button" with its own hx-post: htmx issues the release request directly, so
+               this never submits the surrounding edit form and no nested <form> is needed. #}
+            <button type="button" class="button button--small button--warning"
+                    hx-post="{{ path('app_booking_release', { id: booking.id }) }}"
+                    hx-vals='{{ { _token: csrf_token('release-' ~ booking.id) }|json_encode }}'
+                    hx-confirm="{{ resource.label }} am {{ booking.date|date('d.m.Y') }} freigeben?"
+                    hx-target="#htmx-modal"
+                    hx-swap="outerHTML">
+                Freigeben
+            </button>
+
+            <div class="flex gap-2">
+                <button type="button" class="button button--neutral" {{ stimulus_action('modal', 'close') }}>
+                    Abbrechen
+                </button>
+                <button type="submit" class="button button--primary">
+                    Speichern
+                </button>
+            </div>
+        </div>
+    {{ form_end(form) }}
+{% endblock %}