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Informational 17 Bitcoin

feat(core/delizia): new MoreInfoScreen

Public commit record

What the developer wrote

Authored by obrusvit

80/100 · Strong
feat(core/delizia): new MoreInfoScreen

- the new screen automatically paginates if the text overflows
- remove the usage of `flow/request_number` by uPy based main+menu flow

[no changelog]
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides detailed explanatory context
The short version

What changed, and why it matters

This commit refactors the user interface for entering numbers on the Trezor Safe 5 (Delizia layout). It replaces a Rust-based multi-page 'flow' with a simpler screen that hands the 'more info' menu back to Python code. It also adds a new full-screen text component that can paginate long information. There is no obvious security bug in the diff, but the change touches code that handles user confirmation during device setup and backup, so any mistake could affect what the user sees or approves.

Recommended action

No immediate security action required. Treat as a normal UI refactor; verify with existing device tests that number-input and info-screen flows still behave correctly, especially pagination, cancellation, and the return of the selected value to Python.

Security signals we found

01

Refactor of user confirmation/number-input UI path

02

Removal of Rust-side state (AtomicU16 NUM_DISPLAYED) in favor of returning value to Python

03

New pagination logic in MoreInfoScreen with first-pass layout measurement

04

Styling decision now depends on a new `is_data` boolean from Python for info screens

Risk score

Why this scored 17/100

Our methodology →
Potential impact 2/30
Exploitability 1/25
Stealth signal 1/15
Affected reach 2/15
Confidence 8/10
Evidence quality 3/5
Human-validated context

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