Add record chat sheet with OpenAI streaming

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

lib/music_library_web/live/collection_live/show.html.heex

@@ -26,6 +26,18 @@
                 data-slot="icon"
               />
             </.button>
+            <.button
+              variant="soft"
+              phx-click={MusicLibraryWeb.Components.RecordChat.open("record-chat-sheet")}
+            >
+              <span class="sr-only">{gettext("Chat about album")}</span>
+              <.icon
+                name="hero-chat-bubble-left-right"
+                class="h-5 w-5"
+                aria-hidden="true"
+                data-slot="icon"
+              />
+            </.button>
             <.button
               :if={@record.selected_release_id}
               variant="soft"
@@ -327,6 +339,13 @@
     musicbrainz_id={@record.musicbrainz_id}
   />
 
+  <.live_component
+    id="record-chat"
+    sheet_id="record-chat-sheet"
+    module={MusicLibraryWeb.Components.RecordChat}
+    record={@record}
+  />
+
   <.structured_modal
     :if={@live_action == :edit}
     id="record-modal"