docs: add KL720 hardware support and GUI installer design
PRD v2.6:
- F17: complete GUI installer spec (Wails v2, 6-step wizard, auto deps)
- F18: expand from KL520-only to KL520+KL720 dual-chip support
- KDP→KDP2 firmware update, cross-chip model path resolution
TDD v1.5:
- Section 5.2: rewrite Kneron driver with chip-aware architecture
- Section 8.5.13: dual-chip communication diagram + KL720 verification
- Section 8.5.14: new GUI installer technical design (Wails, Go API,
install/uninstall flow, platform-specific handling, ASCII mockups)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
jim800121chen
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