Watch selected folders and reconcile bounded changes with media freshness guards

apps/desktop/src-tauri/src/semantic_commands.rs

@@ -29,6 +29,7 @@ pub struct SemanticState {
     inference_budget: InferenceBudget,
     lifecycle: Mutex<()>,
     media_tools: Option<searchi_media::FfmpegTools>,
+    media_limits: searchi_media::MediaLimits,
     media_setup_error: Option<String>,
 }
 
@@ -58,10 +59,17 @@ impl SemanticState {
             inference_budget: InferenceBudget::new(2),
             lifecycle: Mutex::new(()),
             media_tools,
+            media_limits: searchi_media::MediaLimits::default(),
             media_setup_error,
         }
     }
 
+    /// Keep generated video frames below the application's excluded data tree.
+    pub fn with_media_scratch(mut self, directory: PathBuf) -> Self {
+        self.media_limits.scratch_directory = Some(directory);
+        self
+    }
+
     fn ensure_idle(&self) -> Result<(), String> {
         if self.embedding.load(Ordering::Acquire)
             || self.downloading.load(Ordering::Acquire)
@@ -335,7 +343,7 @@ pub async fn index_embeddings(state: State<'_, AppState>) -> Result<EmbeddingRep
             let tools = semantic.media_tools.as_ref().ok_or_else(|| {
                 anyhow::anyhow!("The media decoder is missing from this installation. Repair or reinstall searchi.")
             })?;
-            service.index_embeddings_with_media(tools, &searchi_media::MediaLimits::default())
+            service.index_embeddings_with_media(tools, &semantic.media_limits)
         })()
         .map_err(|error| error.to_string());
         // The publisher shares its prepared immutable ANN before activation.