Add Fast DU setting

[chongfun]

Pull Request

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• tools/check.sh firmware passed (firmware Clippy and release builds)
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Description

The 0x1C shortcut for fast partial refresh skips per-refresh temperature load and power sequencing. FreeInk made it opt-in after ghosting/blotching reports. Add a "Refresh quality" setting (Normal/Fast) to the settings menu, persisted in AppStateRecord. Normal = stock temperature-compensated sequence. Fast = 0x1C DU shortcut.

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Review details

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Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: 3751fc7a-d21b-450b-a296-ec2b9f1bedbe

📥 Commits

Reviewing files that changed from the base of the PR and between 32efeb0 and 7463c78.

⛔ Files ignored due to path filters (4)

• fixtures/golden/landscape-settings-x3.png is excluded by !**/*.png
• fixtures/golden/landscape-settings.png is excluded by !**/*.png
• fixtures/golden/settings-type-x3.png is excluded by !**/*.png
• fixtures/golden/settings-type.png is excluded by !**/*.png

📒 Files selected for processing (12)

• app-core/src/lib.rs
• app-core/src/storage_loop.rs
• display/src/epd/ssd1677.rs
• fw/src/display_flush/ssd1677.rs
• fw/src/display_flush/uc8253.rs
• fw/src/tasks/display.rs
• proto/src/nvm.rs
• tools/emulator/src/panel.rs
• tools/preview/src/main.rs
• ui/src/app_render.rs
• ui/src/lib.rs
• ui/src/render.rs

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