docs: Update MR description for dev_skeleton_and_features branch

MR_DESCRIPTION.md

@@ -1,11 +1,11 @@
-# Merge Request / Pull Request Description: Phase 2 - Functional + POI Integration
+# Merge Request / Pull Request Description: Phase 2 - Functional + POI Integration (dev_skeleton_and_features)
 
 ## 📝 Overview
-This Merge Request delivers **Phase 2: Functional + POI Integration** for the **Trailhead** project. It introduces live and offline Points of Interest (POI) extraction via OpenStreetMap (Overpass API), integrates a local Wilderness First-Aid medical manual RAG search, and implements a full route simulation player with metrics HUD and proximity alert indicators.
+This Merge Request delivers **Phase 2: Functional + POI Integration** for the **Trailhead** project. It introduces live and offline Points of Interest (POI) extraction via OpenStreetMap (Overpass API), integrates a local Wilderness First-Aid medical manual RAG search, and implements a full route simulation player with metrics HUD, proximity alert indicators, and smooth Leaflet map marker rendering.
 
 ## 🚀 Key Changes
 1. **POI Integration (`gpx_parser.py`)**:
-   * Fetches key POIs (drinking water, spring, huts, shelters, campsites) dynamically within a custom bounding box of the track via the **OSM Overpass API**.
+   * Fetches key POIs (drinking water, spring, huts, shelters, campsites, viewpoint, peak, emergency phone) dynamically within a custom bounding box of the track via the **OSM Overpass API**.
    * Filters amenities locally using the **Haversine formula** within a 150m buffer of the route.
    * Serializes/saves POIs into GPX XML `<extensions>` and `<wpt>` tags via `save_enhanced_gpx` for offline capabilities.
 2. **Wilderness First-Aid Guide (`first_aid_guide.json` & `rag.py`)**:
@@ -16,20 +16,23 @@ This Merge Request delivers **Phase 2: Functional + POI Integration** for the **
    * Displays dashboard metrics (Route progress %, distance walked, altitude, and dynamic ETA to next checkpoint).
    * Sounds/shows offline proximity alerts when within 150m of any drinking water, camp, or hut.
    * Integrated Wilderness First-Aid tab with static emergency cards and RAG manual search.
+4. **Flicker-Free Map Rendering (Leaflet)**:
+   * Embedded Leaflet map container directly in the parent window.
+   * Wired data exchange using JSON state strings via a hidden Gradio textbox, completely eliminating iframe reload flickering during simulation updates.
+   * Rendered POIs with distinct colored circle markers (Blue for water, Green for huts, Orange for camps, Purple for peaks, Red for phone) for offline compatibility.
 
 ## 🛠️ Verification Done
 * Created [test_overpass.py](file:///c:/Users/skushwaha/Documents/hckthn/TrailHead/test_overpass.py) to parse the preloaded Trento Track.
-* Verified Overpass API (`https://overpass-api.de/api/interpreter`) fetched, filtered, and returned 2 drinking water amenities successfully within a 150m buffer.
+* Verified Overpass API (`https://overpass-api.de/api/interpreter`) fetched, filtered, and returned amenities successfully within a 150m buffer.
 * Validated that the first-aid RAG keyword search retrieves correct sections and references them.
+* Tested the simulation playback, ensuring coordinates update smoothly and map centers without flickering.
 
 ---
 
 ## 📋 Steps to Push to GitHub
 ```bash
-# Add the remote repository (if not already linked)
-git remote add origin <your-github-repo-url>
-
-# Push all files to main
-git push -u origin main
+# Push the current branch to GitHub
+git push -u origin dev_skeleton_and_features
 ```
 
+