fix: revoke_api_key sets NONE, remove unused bind, lowercase error msgs

- fix bug where revoke_api_key set literal 'test_string_nullish' instead of NONE
- remove unused table_name bind in update_timezone
- lowercase ~16 error messages across 4 crates

html-router/src/routes/chat/chat_handlers.rs

@@ -148,7 +148,7 @@ pub async fn new_user_message(
         .db
         .get_item(&conversation_id)
         .await?
-        .ok_or_else(|| AppError::NotFound("Conversation was not found".into()))?;
+        .ok_or_else(|| AppError::NotFound("conversation was not found".into()))?;
 
     if conversation.user_id != user.id {
         return Ok(TemplateResponse::unauthorized().into_response());
@@ -235,7 +235,7 @@ pub async fn show_conversation_editing_title(
         .db
         .get_item(&conversation_id)
         .await?
-        .ok_or_else(|| AppError::NotFound("Conversation not found".to_string()))?;
+        .ok_or_else(|| AppError::NotFound("conversation not found".to_string()))?;
 
     if conversation.user_id != user.id {
         return Ok(TemplateResponse::unauthorized().into_response());
@@ -277,7 +277,7 @@ pub async fn delete_conversation(
         .db
         .get_item(&conversation_id)
         .await?
-        .ok_or_else(|| AppError::NotFound("Conversation not found".to_string()))?;
+        .ok_or_else(|| AppError::NotFound("conversation not found".to_string()))?;
 
     if conversation.user_id != user.id {
         return Ok(TemplateResponse::unauthorized().into_response());

html-router/src/routes/index/handlers.rs

@@ -113,7 +113,7 @@ async fn get_and_validate_text_content(
         .db
         .get_item::<TextContent>(id)
         .await?
-        .ok_or_else(|| AppError::NotFound("Item was not found".to_string()))?;
+        .ok_or_else(|| AppError::NotFound("item was not found".to_string()))?;
 
     if text_content.user_id != user.id {
         return Err(AppError::Auth(

html-router/src/routes/knowledge/handlers.rs

@@ -173,7 +173,7 @@ pub async fn create_knowledge_entity(
 ) -> Result<impl IntoResponse, HtmlError> {
     let name = form.name.trim().to_string();
     if name.is_empty() {
-        return Err(AppError::Validation("Name is required".into()).into());
+        return Err(AppError::Validation("name is required".into()).into());
     }
 
     let description = form.description.trim().to_string();