Fix browser detection and remove standalone configuration script

- Rewrite browser detection to check config directories instead of commands
- Fix Brave browser detection and configuration (was not being reported)
- Add proper support for Chromium installed via snap
- Separate detection for each browser (Firefox, Brave, Chrome, Chromium)
- Each browser now reports configuration success individually
- Remove standalone configure-apps-for-tmpfs.sh script per user request
- Keep all functionality in the all-in-one optimizer script
- Update README to remove reference to standalone script

Fixes:
- Brave browser now properly detected via ~/.config/BraveSoftware
- Chromium detected even when installed as snap package
- All browsers report their configuration status
- Cleaner, more reliable directory-based detection

README.md

@@ -19,7 +19,6 @@ The **one-button optimizer** is an intelligent, interactive system optimizer tha
 ### Quick Tools
 
 - `./one-button-optimizer.sh` - **Main interactive optimizer** (recommended)
-- `./configure-apps-for-tmpfs.sh` - **Configure applications** to use tmpfs caches (browsers, dev tools)
 - `./quick-status-check.sh` - **Quick system status** overview (no changes)
 - `./tmpfs-info.sh` - **Detailed tmpfs information** and configuration guide
 - `./launcher.sh` - **Auto-sudo launcher** for the optimizer