Add genre tracking and year-in-review improvements

Adds genre field to Film model with TMDB enrichment. Genres populate from
TMDB detail fetch during add/edit and bulk enrichment. Genre metadata displays
on film cards, detail page (Production section), stats page (top genres panel),
and year-in-review (by decade and genre breakdowns).

Auto-detects rewatches when adding films via TMDB autocomplete - if a film with
the same TMDB ID already exists in diary, pre-fills rewatch checkbox and count.
Rewatch count now displays on film cards as "Rewatch #N".

Stats page now shows:
- Top genres (most watched)
- Film decades (sorted chronologically)
- Already shows: directors, companions, star distribution, rewatch rate

Year-in-review shows decades and genres alongside monthly activity and companions.

Bulk enrichment endpoint (/data/enrich-posters) now fetches missing genre
metadata along with posters and TMDB IDs.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/templates/_film_card.html b/templates/_film_card.html
index 5e8e6e4..a4e206f 100644
--- a/templates/_film_card.html
+++ b/templates/_film_card.html
@@ -43,11 +43,12 @@
       {% if film.date_watched %}<span>{{ film.date_watched }}</span>{% endif %}
       {% if film.runtime %}<span>{{ film.runtime }} min</span>{% endif %}
       {% if film.language %}<span>{{ film.language }}</span>{% endif %}
-      {% if film.rewatch %}<span>Rewatch</span>{% endif %}
+      {% if film.rewatch %}<span>Rewatch{% if film.rewatch_count %} #{{ film.rewatch_count }}{% endif %}</span>{% endif %}
     </div>
 
-    {% if film.context or film.how_found or film.watched_with %}
+    {% if film.genre or film.context or film.how_found or film.watched_with %}
       <div class="tag-row">
+        {% if film.genre %}<span>{{ film.genre }}</span>{% endif %}
         {% if film.context %}<span>{{ film.context }}</span>{% endif %}
         {% if film.how_found %}<span>{{ film.how_found }}</span>{% endif %}
         {% if film.watched_with %}<span>With {{ film.watched_with }}</span>{% endif %}