Integrate Proxmox host optimization into one-button optimizer

Major changes:
- Added Proxmox detection with interactive mode selection
- Mode 1: Proxmox Host (hypervisor-optimized)
  - Different kernel parameters (swappiness=10, BBR, FQ)
  - Minimal tmpfs (2GB APT cache only)
  - No zram (VMs need direct RAM)
  - No desktop app configuration
- Mode 2: Desktop (original behavior with warnings)
- Mode 3: Abort (recommends running in VMs)

Technical implementation:
- check_proxmox() now offers mode selection
- analyze_and_prompt() branches on PROXMOX_MODE
- tune_kernel() handles both desktop and proxmox profiles
- setup_tmpfs() handles minimal proxmox tmpfs
- Updated PROXMOX_COMPATIBILITY.md with new behavior

Result: One unified script for both desktop and Proxmox use cases

PROXMOX_COMPATIBILITY.md

@@ -1,14 +1,78 @@
 # Proxmox Host Compatibility Analysis
 
-## ⚠️ Running on Proxmox Host: Safety Considerations
+## ✅ **NEW: Integrated Proxmox Support!**
 
-### 🔴 **NOT RECOMMENDED for Proxmox Host**
+The one-button optimizer now **automatically detects** Proxmox hosts and offers **two modes**:
 
-This toolkit is designed for **Linux desktop systems** and **should NOT be used on a Proxmox host** without modifications. Here's why:
+```bash
+sudo ./one-button-optimizer.sh
+```
+
+### When run on Proxmox host, you'll see:
+
+```
+⚠️  Proxmox VE host detected!
+
+<EFBFBD>️  System: Proxmox VE (5 VMs, 2 containers)
+
+This tool has TWO modes:
+
+  1️⃣  Proxmox Host Mode (Hypervisor Optimization)
+     • Optimized kernel params for VM workloads
+     • Minimal RAM allocation (2GB for APT cache only)
+     • CPU performance governor
+     • Network optimization (BBR, FQ)
+     • No desktop app configuration
+
+  2️⃣  Desktop Mode (NOT recommended for host)
+     • Heavy RAM usage (zram + tmpfs = 40-50%)
+     • Desktop-focused optimizations
+     • Will reduce memory available for VMs
+
+  3️⃣  Abort (Recommended: Run inside your desktop VMs)
+
+Choose mode (1=Proxmox/2=Desktop/3=Abort) [1]:
+```
 
 ---
 
-## ❌ Potential Issues on Proxmox Host
+## 🎯 Proxmox Host Mode Optimizations
+
+When you select **Mode 1 (Proxmox Host Mode)**, you get:
+
+### 1. **Kernel Parameters**
+```bash
+vm.swappiness = 10              # Allow some swap (not aggressive like desktop)
+vm.dirty_ratio = 10             # Handle VM write bursts
+vm.dirty_background_ratio = 5    # Start background writes earlier
+vm.vfs_cache_pressure = 50      # Balance inode/dentry cache
+vm.min_free_kbytes = 67584      # Keep minimum free RAM
+
+# Networking (optimized for VM/CT traffic)
+net.core.default_qdisc = fq                    # Fair Queue
+net.ipv4.tcp_congestion_control = bbr          # Better bandwidth
+net.core.netdev_max_backlog = 5000
+net.ipv4.tcp_max_syn_backlog = 8192
+```
+
+### 2. **Minimal tmpfs (Optional)**
+- Only 2GB for APT package cache
+- Minimal RAM impact
+- Speeds up `apt upgrade` operations
+
+### 3. **No zram**
+- Skipped entirely in Proxmox mode
+- VMs need direct RAM access
+
+### 4. **No Desktop Apps**
+- Skips browser/IDE configuration
+- Focus on hypervisor performance
+
+---
+
+## ❌ What's NOT Safe (Still Applies if You Choose Mode 2)
+
+If you mistakenly choose **Desktop Mode** on Proxmox host:
 
 ### 1. **zram Configuration**
 - **Issue**: Creates compressed swap in RAM