[SUCCESS] macOS Tahoe 26.5.1 on Lenovo ThinkCentre M710q Tiny (i5-6500T) - Oldyyyy

Finally got a rock-solid build running on this little 1L ThinkCentre, so posting the documentation per the sub rules. This thing is tiny, silent, and sips power — a great little Hack. Screenshots attached (About This Mac).

Hardware

CPU: Intel Core i5-6500T (Skylake, 4C/4T, 35W)
GPU: Intel HD Graphics 530 (integrated) / (Spoofed to HD 620)
RAM: 16GB DDR4 2133MHz
Motherboard / Make & Model: Lenovo ThinkCentre M710q Tiny
Storage: 256GB SSD
Audio Codec: Realtek ALC294
Ethernet Card: Intel I219-V (Gigabit)
Wifi/BT Card: Intel Wireless-AC 7260 — native WiFi + Bluetooth working
Touchpad / touch display: N/A (desktop)
Display: 24" 2560x1440 @ 100Hz
macOS: Tahoe 26.5.1
Bootloader: OpenCore1.0.7
SMBIOS: iMac20,2 Intel Core i9-10910 @ 3.60 GHz Retina 5K, 27-inch, 2020

Guide(s) used

[Dortania OpenCore, Skylake desktop path]

What's working

Full iGPU acceleration (HD 530, QE/CI, hardware video decode)
Native WiFi (Intel 7260 via AirportItlwm) + (Patched using RP-Core to get native wifi)
Native Bluetooth (IntelBluetoothFirmware + BlueToolFixup)
Onboard audio (ALC294 via AppleALC, layout-id 12)
Ethernet (IntelMausi)
USB ports mapped
Sleep / wake: Yes
iServices (iMessage / FaceTime / App Store): Yes