docs: restructure website, optimize HTML, gitignore private files

Website docs (website/docs/):
- Delete 6 stale -md.html duplicates
- Rename docs-clients/miners/developers → clients/miners/developers.html
- Unify header/nav across all 15 pages (new .site-header pattern)
- Fix 34 dead href=# links with real targets
- Upgrade Font Awesome v4→v6 in index.html
- Replace search stub with live client-side search (15-page index)
- Extract all inline CSS into shared docs.css (+630 lines)
- Extract inline theme JS into shared theme.js
- Strip inline style= attributes from 10+ pages
- Add .announce-banner, .source-links, .search-results CSS classes
- Add Markdown Source links to clients/miners/developers pages
- Update components.html title to Architecture & Components
- Move browser-wallet.html to website/wallet/, leave redirect
- Update all dates to February 2026

Website root:
- Delete 6 root-level duplicate HTML files (160KB saved)
- Rewire index.html and 404.html links

Root README.md:
- Fix 8 broken doc links to new numbered folder structure
- Update copyright to 2026

.gitignore + .example files:
- Gitignore private files: .aitbc.yaml, .env, deploy scripts,
  GPU scripts, service scripts, infra configs, .windsurf/, website README
- Create 7 .example files for GitHub users with sanitized templates
- Untrack 47 previously committed private files

Live server:
- Push all website files to aitbc-cascade:/var/www/html/
- Clean stale admin.html and index.nginx-debian.html

scripts/deploy/deploy_gpu_to_container.py

@@ -1,130 +0,0 @@
-#!/usr/bin/env python3
-"""
-Deploy GPU Miner Integration to AITBC Container
-"""
-
-import subprocess
-import sys
-
-def run_in_container(cmd):
-    """Run command in aitbc container"""
-    full_cmd = f"incus exec aitbc -- {cmd}"
-    print(f"Running: {full_cmd}")
-    result = subprocess.run(full_cmd, shell=True, capture_output=True, text=True)
-    if result.returncode != 0:
-        print(f"Error: {result.stderr}")
-        return False, result.stderr
-    return True, result.stdout
-
-def deploy_gpu_miner_to_container():
-    print("🚀 Deploying GPU Miner Integration to AITBC Container...")
-    
-    # Check container access
-    print("\n1. 🔍 Checking container access...")
-    success, output = run_in_container("whoami")
-    if success:
-        print(f"   Container user: {output.strip()}")
-    else:
-        print("   ❌ Cannot access container")
-        return
-    
-    # Copy GPU miner files to container
-    print("\n2. 📁 Copying GPU miner files...")
-    files_to_copy = [
-        "gpu_miner_with_wait.py",
-        "gpu_registry_demo.py"
-    ]
-    
-    for file in files_to_copy:
-        cmd = f"incus file push /home/oib/windsurf/aitbc/{file} aitbc/home/oib/"
-        print(f"   Copying {file}...")
-        result = subprocess.run(cmd, shell=True)
-        if result.returncode == 0:
-            print(f"   ✅ {file} copied")
-        else:
-            print(f"   ❌ Failed to copy {file}")
-    
-    # Install dependencies in container
-    print("\n3. 📦 Installing dependencies...")
-    run_in_container("pip install httpx fastapi uvicorn psutil")
-    
-    # Create GPU miner service in container
-    print("\n4. ⚙️ Creating GPU miner service...")
-    service_content = """[Unit]
-Description=AITBC GPU Miner Client
-After=network.target
-
-[Service]
-Type=simple
-User=oib
-WorkingDirectory=/home/oib
-ExecStart=/usr/bin/python3 gpu_miner_with_wait.py
-Restart=always
-RestartSec=30
-StandardOutput=journal
-StandardError=journal
-
-[Install]
-WantedBy=multi-user.target
-"""
-    
-    # Write service file to container
-    with open('/tmp/gpu-miner.service', 'w') as f:
-        f.write(service_content)
-    subprocess.run("incus file push /tmp/gpu-miner.service aitbc/tmp/", shell=True)
-    run_in_container("sudo mv /tmp/gpu-miner.service /etc/systemd/system/")
-    run_in_container("sudo systemctl daemon-reload")
-    run_in_container("sudo systemctl enable gpu-miner.service")
-    run_in_container("sudo systemctl start gpu-miner.service")
-    
-    # Create GPU registry service in container
-    print("\n5. 🎮 Creating GPU registry service...")
-    registry_service = """[Unit]
-Description=AITBC GPU Registry
-After=network.target
-
-[Service]
-Type=simple
-User=oib
-WorkingDirectory=/home/oib
-ExecStart=/usr/bin/python3 gpu_registry_demo.py
-Restart=always
-RestartSec=10
-StandardOutput=journal
-StandardError=journal
-
-[Install]
-WantedBy=multi-user.target
-"""
-    
-    with open('/tmp/gpu-registry.service', 'w') as f:
-        f.write(registry_service)
-    subprocess.run("incus file push /tmp/gpu-registry.service aitbc/tmp/", shell=True)
-    run_in_container("sudo mv /tmp/gpu-registry.service /etc/systemd/system/")
-    run_in_container("sudo systemctl daemon-reload")
-    run_in_container("sudo systemctl enable gpu-registry.service")
-    run_in_container("sudo systemctl start gpu-registry.service")
-    
-    # Check services
-    print("\n6. 📊 Checking services...")
-    success, output = run_in_container("sudo systemctl status gpu-miner.service --no-pager")
-    print(output)
-    
-    success, output = run_in_container("sudo systemctl status gpu-registry.service --no-pager")
-    print(output)
-    
-    # Update coordinator to include miner endpoints
-    print("\n7. 🔗 Updating coordinator API...")
-    
-    print("\n✅ GPU Miner deployed to container!")
-    print("\n📊 Access URLs:")
-    print("   - Container IP: 10.1.223.93")
-    print("   - GPU Registry: http://10.1.223.93:8091/miners/list")
-    print("   - Coordinator API: http://10.1.223.93:8000")
-    
-    print("\n🔧 To manage services in container:")
-    print("   incus exec aitbc -- sudo systemctl status gpu-miner")
-    print("   incus exec aitbc -- sudo journalctl -u gpu-miner -f")
-
-if __name__ == "__main__":
-    deploy_gpu_miner_to_container()