feat: use saved progress for watch button on anime page

Check continue_watching_entry to find the episode to resume from.
Show 'Continue Episode N' instead of 'Watch Now' when progress exists.

internal/anime/handler/handler.go

@@ -253,10 +253,22 @@ func (h *AnimeHandler) HandleAnimeDetails(c *gin.Context) {
 	}
 
 	user, _ := c.Get("User")
+	ep := 1
+	var cwSeconds float64
+	if u, ok := user.(*domain.User); ok {
+		cwEntry, err := h.watchlistSvc.GetContinueWatchingEntry(c.Request.Context(), u.ID, int64(id))
+		if err == nil && cwEntry.CurrentEpisode.Valid {
+			ep = int(cwEntry.CurrentEpisode.Int64)
+			cwSeconds = cwEntry.CurrentTimeSeconds
+		}
+	}
+
 	c.HTML(http.StatusOK, "anime.gohtml", gin.H{
-		"Anime":       anime,
-		"CurrentPath": fmt.Sprintf("/anime/%d", id),
-		"User":        user,
+		"Anime":                anime,
+		"CurrentPath":          fmt.Sprintf("/anime/%d", id),
+		"User":                 user,
+		"ContinueWatchingEp":   ep,
+		"ContinueWatchingTime": cwSeconds,
 	})
 }
 

templates/anime.gohtml

@@ -85,7 +85,7 @@
         {{if $anime.ShortRating}}<span class="flex items-center gap-1.5"><span>•</span>{{$anime.ShortRating}}</span>{{end}}
       </div>
 
-      {{template "watchlist_actions" dict "Anime" $anime "User" .User "Status" .Status}}
+      {{template "watchlist_actions" dict "Anime" $anime "User" .User "Status" .Status "ContinueWatchingEp" .ContinueWatchingEp "ContinueWatchingTime" .ContinueWatchingTime}}
 
       <div class="flex flex-col gap-12 lg:flex-row">
         <div class="grow lg:max-w-4xl">

templates/components/watchlist_actions.gohtml

@@ -46,9 +46,8 @@
     </div>
   </ui-dropdown>
 
-  <a href="/anime/{{$anime.MalID}}/watch" class="bg-background-button hover:bg-background-button-hover px-5 py-2.5 text-sm font-medium text-foreground transition-colors">
-    <i class="fa-solid fa-play mr-2"></i>
-    Watch Now
+  <a href="/anime/{{$anime.MalID}}/watch{{if and .ContinueWatchingEp (ne .ContinueWatchingEp 1)}}?ep={{.ContinueWatchingEp}}{{end}}" class="bg-background-button hover:bg-background-button-hover px-5 py-2.5 text-sm font-medium text-foreground transition-colors">
+    {{if and .ContinueWatchingEp (ne .ContinueWatchingEp 1)}}Continue Episode {{.ContinueWatchingEp}}{{else}}Watch Now{{end}}
   </a>
 </div>