Update README.md and DEVELOPMENT_PLAN.md with pytchat status

DEVELOPMENT_PLAN.md

@@ -48,6 +48,7 @@ The `pytchat` library directly leverages this internal API. It handles the under
 1.  **`pytchat` Installation and Basic Usage:**
     *   **Action:** Install the `pytchat` library.
     *   **Action:** Create a basic Python script to fetch and display chat using `pytchat` for a given live stream ID.
+    *   **Status:** **COMPLETED.** The `pytchat_listener.py` script is working as expected.
 2.  **`pytchat` Internal Mechanism Analysis:**
     *   **Action:** Investigate how `pytchat` manages session/authentication internally (e.g., does it require a logged-in browser session, or does it generate necessary headers?).
     *   **Action:** Understand how `pytchat` handles the `continuation` token and polling.

README.md

@@ -6,15 +6,20 @@ This project aims to create a robust, quota-friendly, open-source, and Linux-com
 
 To identify and, if feasible, implement a sustainable, quota-friendly, compliant, open-source, and Linux-compatible method for receiving real-time YouTube Live Chat messages, processing them, and displaying them in the terminal with rich formatting. This goal explicitly rules out relying on YouTube Data API v3 quota increases.
 
-## Revised Research & Exploration Plan
+## Detailed Implementation Plan
 
 For a detailed breakdown of the revised research and exploration steps, please refer to the [DEVELOPMENT_PLAN.md](DEVELOPMENT_PLAN.md) file.
 
+## Current Status
+
+The `pytchat_listener.py` script has been successfully implemented and tested for basic chat fetching and display.
+
 ## Dependencies
 
+*   `pytchat`
+*   `rich`
 *   `google-auth-oauthlib` (for potential initial API calls or authentication research)
 *   `google-api-python-client` (for potential initial API calls or authentication research)
-*   `rich` (for terminal display)
 
 ## Future Enhancements