docs: update CLI_VS_WEB.md with deprecation notice

- Add deprecation notice at top of document
- Mark CLI as deprecated throughout
- Add migration path for existing CLI users
- Document database compatibility notes
- Recommend web interface for all operations

docs/CLI_VS_WEB.md

@@ -1,12 +1,28 @@
 # CLI vs Web Functionality Comparison
 
+## ⚠️ DEPRECATION NOTICE
+
+**The CLI version (`minimal_app.py`) is now DEPRECATED.**
+
+Please use the **web interface (`app.py`)** for all operations. The web interface provides:
+- Complete feature set
+- Full database schema support
+- Responsive mobile interface
+- Better user experience
+
+The CLI will be removed in a future version. This document is kept for historical reference.
+
+---
+
 ## Overview
 
-This document compares the functionality between the **CLI version** (`minimal_app.py`) and the **Web version** (`app.py`) of the Tablet Management System.
+This document compares the functionality between the **DEPRECATED CLI version** (`minimal_app.py`) and the **Web version** (`app.py`) of the Tablet Management System.
 
 ## Current State
 
-### Web Version (app.py) - Complete Feature Set
+### Web Version (app.py) - ✅ RECOMMENDED
+
+The web version is the **primary and recommended** interface for all users.
 
 | Feature | Status | Route | Template |
 |---------|--------|-------|---------|
@@ -24,11 +40,15 @@ This document compares the functionality between the **CLI version** (`minimal_a
 | Delete Non-Loanable Device | ✅ | `/delete_non_loanable_device/<id>` | N/A (redirects) |
 | Project Management | ✅ | `/project_management` | `project_management.html` |
 
-### CLI Version (minimal_app.py) - Incomplete
+### CLI Version (minimal_app.py) - ❌ DEPRECATED
+
+**This CLI is deprecated and should not be used for new development.**
+
+The CLI has limited functionality and does not support all database columns used by the web version.
 
 | Feature | Status | Function |
 |---------|--------|----------|
-| Add Tablet | ✅ | `add_tablet()` |
+| Add Tablet | ⚠️ Partial | `add_tablet()` - Missing notes field |
 | Add User | ⚠️ Partial | `add_user()` - Missing email/phone |
 | Loan Tablet | ✅ | `loan_tablet()` |
 | Return Tablet | ✅ | `return_tablet()` |
@@ -43,6 +63,45 @@ This document compares the functionality between the **CLI version** (`minimal_a
 | **Edit Non-Loanable Device** | ❌ Missing | N/A |
 | **Project Management** | ❌ Missing | N/A |
 
+## Migration Path
+
+### For Existing CLI Users
+
+**Stop using the CLI and switch to the web interface:**
+
+1. Run the web interface:
+   ```bash
+   python3 app.py
+   ```
+
+2. Open your browser to: http://localhost:5000
+
+3. The web interface uses the **same database** (`tablets.db`), so all your data is preserved.
+
+### Database Compatibility
+
+The CLI's database schema is **missing some columns** that the web version uses:
+- `tablets.notes` - Added by web version
+- `users.email` - Added by web version  
+- `users.phone` - Added by web version
+
+**If you've only used the CLI:** Your database is missing these columns. The web interface will still work, but won't be able to store notes, email, or phone until the columns are added.
+
+**To fix the database schema:**
+```bash
+# Run the web interface - it will add missing columns automatically
+python3 app.py
+```
+
+The web version's `init_db()` will add any missing columns when it runs.
+
+## Recommendation
+
+**Use `app.py` (web interface) for all operations.**
+
+The CLI (`minimal_app.py`) is deprecated and will be removed in a future version. All development and maintenance efforts should focus on the web interface.
+
+
 ## Missing Features in CLI
 
 ### 1. User Management