FIX: Don't try to use pg headlines for semantic search. (#36)

Depends on discourse/discourse#20939.

app/controllers/discourse_ai/embeddings/embeddings_controller.rb

@@ -16,6 +16,7 @@ module DiscourseAi
             type_filter: SEMANTIC_SEARCH_TYPE,
             term: query,
             search_context: guardian,
+            use_pg_headlines_for_excerpt: false,
           )
 
         model =

assets/javascripts/initializers/semantic-full-page-search.js

@@ -55,7 +55,9 @@ export default {
   initialize(container) {
     const settings = container.lookup("site-settings:main");
 
-    if (settings.ai_embeddings_enabled) {
+    const semanticSearch = settings.ai_embeddings_semantic_search_enabled;
+
+    if (settings.ai_embeddings_enabled && semanticSearch) {
       withPluginApi("1.6.0", initializeSemanticSearch);
     }
   },

config/locales/server.en.yml

@@ -48,6 +48,7 @@ en:
     ai_embeddings_semantic_related_topics: "Maximum number of topics to show in related topic section."
     ai_embeddings_pg_connection_string: "PostgreSQL connection string for the embeddings module. Needs pgvector extension enabled and a series of tables created. See docs for more info."
     ai_embeddings_semantic_search_model: "Model to use for semantic search."
+    ai_embeddings_semantic_search_enabled: "Enable full-page semantic search."
 
   reviewables:
       reasons:

config/settings.yml

@@ -146,3 +146,6 @@ plugins:
   ai_embeddings_semantic_related_topics_enabled: false
   ai_embeddings_semantic_related_topics: 5
   ai_embeddings_pg_connection_string: ""
+  ai_embeddings_semantic_search_enabled:
+    default: false
+    client: true