docs pr help

README.md

@@ -43,6 +43,12 @@ CodiumAI PR-Agent aims to help efficiently review and handle pull requests, by p
   
 ## News and Updates
 
+### September 21, 2024
+Need help with PR-Agent? New feature - simply comment `/help "your question"` in a pull request, and PR-Agent will provide you with the [relevant documentation](https://github.com/Codium-ai/pr-agent/pull/1241#issuecomment-2365259334).
+
+<kbd><img src="https://www.codium.ai/images/pr_agent/pr_help_chat.png" width="768"></kbd>
+
+
 ### September 12, 2024
 [Dynamic context](https://pr-agent-docs.codium.ai/core-abilities/dynamic_context/) is now the default option for context extension. 
 This feature enables PR-Agent to dynamically adjusting the relevant context for each code hunk, while avoiding overflowing the model with too much information.

docs/docs/index.md

@@ -8,6 +8,7 @@ CodiumAI PR-Agent is an open-source tool to help efficiently review and handle p
 
 - See the [Tools Guide](./tools/index.md) for a detailed description of the different tools.
 
+To search the documentation site using natural language, simply comment `/help "your question"` in a pull request where PR-Agent is installed. PR-Agent will then provide you with an [answer](https://github.com/Codium-ai/pr-agent/pull/1241#issuecomment-2365259334), including relevant documentation links.
 
 ## PR-Agent Features
 PR-Agent offers extensive pull request functionalities across various git providers.

pr_agent/tools/pr_description.py

@@ -119,7 +119,7 @@ class PRDescription:
                 pr_body += "\n</details>\n"
             elif self.git_provider.is_supported("gfm_markdown") and get_settings().pr_description.enable_help_comment:
                 pr_body += "\n\n___\n\n> 💡 **PR-Agent usage**:"
-                pr_body += "\n>Comment `/help` on the PR to get a list of all available PR-Agent tools and their descriptions\n\n"
+                pr_body += '\n>Need PR-Agent help? Comment `/help "your question"` on any pull request to receive relevant information'
 
             # Output the relevant configurations if enabled
             if get_settings().get('config', {}).get('output_relevant_configurations', False):

pr_agent/tools/pr_help_message.py

@@ -105,8 +105,10 @@ class PRHelpMessage:
             get_logger().info("Loading the Chroma index...")
             db_path = "./docs/chroma_db.zip"
             if not os.path.exists(db_path):
-                get_logger().error("Local db not found")
-                return sim_results
+                db_path= "/app/docs/chroma_db.zip"
+                if not os.path.exists(db_path):
+                    get_logger().error("Local db not found")
+                    return sim_results
             with tempfile.TemporaryDirectory() as temp_dir:
 
                 # Extract the ZIP file
@@ -169,6 +171,9 @@ class PRHelpMessage:
                     if not sim_results:
                         get_logger().info("Failed to load the S3 index. Loading the local index...")
                         sim_results = self.get_sim_results_from_local_db(embeddings)
+                if not sim_results:
+                    get_logger().error("Failed to retrieve similar snippets. Exiting...")
+                    return
 
                 # Prepare relevant snippets
                 relevant_pages_full, relevant_snippets_full_header, relevant_snippets_str =\