Clean up previous project display

server/src/http/project.rs

@@ -54,4 +54,11 @@ impl ProjectApi {
         let projects = fs::get_known_projects(self.ctx.store.as_ref()).map_err(bad_request)?;
         Ok(Json(projects))
     }
+
+    /// Forget a known project path.
+    #[oai(path = "/projects/forget", method = "post")]
+    async fn forget_known_project(&self, payload: Json<PathPayload>) -> OpenApiResult<Json<bool>> {
+        fs::forget_known_project(payload.0.path, self.ctx.store.as_ref()).map_err(bad_request)?;
+        Ok(Json(true))
+    }
 }

server/src/io/fs.rs

@@ -126,6 +126,21 @@ pub fn get_known_projects(store: &dyn StoreOps) -> Result<Vec<String>, String> {
     Ok(projects)
 }
 
+pub fn forget_known_project(path: String, store: &dyn StoreOps) -> Result<(), String> {
+    let mut known_projects = get_known_projects(store)?;
+    let original_len = known_projects.len();
+
+    known_projects.retain(|p| p != &path);
+
+    if known_projects.len() == original_len {
+        return Ok(());
+    }
+
+    store.set(KEY_KNOWN_PROJECTS, json!(known_projects));
+    store.save()?;
+    Ok(())
+}
+
 pub fn get_model_preference(store: &dyn StoreOps) -> Result<Option<String>, String> {
     if let Some(model) = store
         .get(KEY_SELECTED_MODEL)