Update README to reflect CSV alias system

README.md

@@ -25,8 +25,8 @@ This central repository houses two critical types of data:
    - **✅ Latest Master**: The most recently scraped government UDISE data, representing the absolute source of truth for the current year. (e.g., `scraped_data/mapped/mapped_master_2026_jul_01_10_19_pm.parquet`)
    - **📚 Old Master**: The historical baseline dataset used in previous scholarship cycles. It serves as a fallback to ensure continuity for students who applied in previous years. (`mapping_rules/baseline_master.parquet`)
 
-2. **Alias Dictionary (`school_aliases.json`)**:
-   - A dynamic JSON file that acts as the memory for the application. Whenever an operations team member encounters a marksheet name that doesn't perfectly match the official masters, they map it in the UI. The app immediately updates this JSON file and pushes it back to HuggingFace.
+2. **Alias Dictionary (`school_aliases.csv`)**:
+   - A centralized CSV file that acts as the memory for the application. Whenever an operations team member encounters a marksheet name that doesn't perfectly match the official masters, they map it in the UI. The app immediately updates this CSV file (sorting it by UDISE code for perfect grouping) and pushes it back to HuggingFace.
 
 ---
 
@@ -46,7 +46,7 @@ The app will display all known names for the selected school(s) as distinct colo
 - <strong style="color: #d97706;">Yellow Cards (📄 Marksheet)</strong>: Custom aliases that were previously saved by the operations team.
 
 **Saving an Alias**:
-If the student's marksheet says something different (e.g., "NC High School" instead of "Nandeswar Chakravarty High School"), simply type "NC High School" into the input box on the right and click **Save Alias**. The app will push this mapping to the cloud, and future searches for this school will instantly recognize "NC High School" as a valid alias!
+If the student's marksheet says something different (e.g., "NC High School" instead of "Nandeswar Chakravarty High School"), simply type "NC High School" into the main **Search Box** at the top of the page, select the specific Month and Year the marksheet is from, and click **Save Alias**. The app will push this mapping to the cloud, and future searches for this school will instantly recognize "NC High School" as a valid alias!
 
 **Deleting an Alias**:
 If an incorrect alias was saved by mistake, every Yellow Marksheet card features a red **🗑️ Delete** button on the right. Clicking it will instantly purge that specific alias from the cloud dictionary.