ingest: synthesized device names mangle brand casing (INTEL / Oneplus)

[Seungpyo1007]

Problem

When a Wikipedia row's model string omits the brand, name synthesis prefixed manufacturer.upper() (CPU/GPU) or brand.title() (smartphone), producing INTEL Core 2 Duo E6300 and (latently) Oneplus ... for bare model numbers.

Impact

Reproduced the casing artifact that had to be hand-fixed in TechAPI data, and would recur on every weekly ingest. GPU (Intel Arc) and smartphone (OnePlus) shared the same latent bug.

Fix

Per-brand display map so Intel stays Intel while genuinely all-caps brands (AMD, NVIDIA) keep their casing.

Files: app/ingest/sources/wikipedia_cpu.py, wikipedia_gpu.py, wikipedia_smartphone.py

[Seungpyo1007]

Resolved by cff705d.