Design font fallback and licensing checks — Flash-check repair

PART I

Warm-up

Reconnect with a useful idea before starting design font fallback and licensing checks. In one or two sentences, describe the input, output or host boundary from the previous exercise that this lesson builds on. If you are arriving directly, skim the worked example first; there is no locked prerequisite.

A rough note is enough. You can revise it after the example.

PART II

Instruction & guided example

Repair a license record attached to the wrong asset

Font choice combines visual coverage, metrics, availability and licensing. The source does not grant redistribution rights or guarantee installed fonts. Each exercise supplies a license or coverage fixture; conclusions apply to that fixture rather than giving general legal or platform advice.

Release contains font Cedar-v2. The approval record covers Cedar-v1 only and contains checksum C1. Shipped fixture checksum is C2. No rule says v1 approval extends to v2.

Worked reasoning: The mismatch means the supplied record does not establish approval for this asset. Match version/checksum and retrieve the applicable terms before marking the package ready. Do not infer permission from a similar family name.

Failed alternative: Renaming Cedar-v2 to Cedar-v1 changes a filename but does not make the binary match C1 or inherit its record.

Worked reasoning and supplied artifact

Approved record:asset Cedar-v1,checksum C1
Package asset:Cedar-v2,checksum C2
Match:no
Result:approval evidence incomplete for shipped asset

Illustrative example from the proposed WillowScript design. The language and WUIX/WMATH/WDB/WAUDIO/WTMP services are not implemented in the supplied source. This site has no interpreter, VM or native host and does not execute or certify the snippet.

Try the guided change

Reconstruct the supplied worked case first: list its inputs, intermediate decisions and final artifact. Compare each row with the explanation and identify exactly where the rejected alternative fails. Then use the changed inputs in Part IV for independent work.

• Write the supplied inputs and initial state before following the example.
• Reconstruct each intermediate calculation or host decision, then compare with the worked artifact.
• Explain why the contrasting alternative fails before attempting the changed inputs in Part IV.

PART III

Take a breather

Step back after the guided example. Look away from the screen, stretch, or reread your prediction. This is an optional learning pause, not a timer or an assessment gate.

When you return, try to name the lesson’s key idea without copying its wording. If that feels difficult, return to Part II and trace one line rather than restarting the entire lesson.

PART IV

Independent practice

Project context: Accessible service console. Build a small, understandable change around design font fallback and licensing checks.

Review font Birch-build3 with a build2-only approval fixture. Produce an asset/license evidence mapping and precise unresolved item.

What to produce

A shipped-asset/approval-record comparison with no invented permission grant.

• State the intended behavior in a sentence before editing.
• Use only source-backed syntax and the host services whose contract you have been given.
• Record a normal case and a boundary or unavailable-resource case.
• Label hand predictions separately from anything actually measured in a supplied toolchain.

Syntax colors are a reading aid, not a compiler. The line you are editing stays uncolored until you move to a different line; capitalization is never changed. Drafts stay on this browser and code is not executed.

import wuix.widget.button;
import wuix.layout;
domain Login {
    const screen = {
        layout: { type: "column", padding: [24, 32], gap: 16 },
        components: [{ type: "text", value: "Welcome back" }]
    };
    fnc show() -> void {
        wuix.mount("main", screen);
    }
}

PART V

Self-check

Use this check to notice what to revisit. It does not award a private course grade, block another page or claim to verify compiled code. Every answer has a learning explanation.

You may keep exploring even if you are unsure. Use the hint, compare the trace, and revise your explanation.

PART VI

Recap & small task

Bring the idea back to the mod feature you are building. A useful recap connects the mechanism to a decision you can make in your own code.

• Repair a license record attached to the wrong asset
• Review font Birch-build3 with a build2-only approval fixture. Produce an asset/license evidence mapping and precise unresolved item.
• Separate source-backed behavior, host requirements and untested predictions.

One small recap task

Bind license evidence to the exact shipped artifact.

This marks your personal practice record only. It is not a certification or an official workspace assessment.