razer: mark the Diamondback Chroma (0x004c) verified on hardware

[ydw1904]

Summary

A reporter's Diamondback Chroma passed the app's hardware test through OpenMouse Bridge, so 0x004c moves to verified: true.

• src/razer/devices.ts: verified: true on 0x004c, with a note on what was checked. Its connection card stops saying "untested model".
• devices.test.ts: added to VERIFIED_SINCE and HARDWARE_VERIFIED.
• docs/razer-testing.md: added to the verified identifiers.
• captures/razer-diamondback-chroma/: the app's hardware test export and a README.

Evidence

Firmware "Mouse 1.0", wired, Windows, OpenMouse Bridge, RazerHidClient unmodified:

• identity, firmware, DPI (1800) and polling (500 Hz) read back on transaction id 0xff
• 800 DPI and 1000 Hz each wrote, read back and were restored
• the reporter also confirmed that DPI changes take effect

Not settled

• Polling was read back but not measured: the sampler averaged 305 Hz against the reported 500 Hz and flagged dropouts.
• The DPI stage read gave nothing usable, so no stage editor is offered.
• No raw feature reports were captured.