feat(variants): ship Walking's own designer icon

[rryles]

What

Walking stops borrowing Hiking's icons ("icons": "target") and ships the designer's walking-figure icon — the right-aligned cut, chosen over a centred alternative after simulator comparison. It also gains a real min_target_version.

• Examples/Apps/Variants/Walking/icon_60x60.png / icon_30x30.png: the 40x40/25x25 artwork composited onto the standard canvases, placed in the same glyph band as the sibling activity icons (big: y 10-50 like Hiking's; small: y 2-27), palette already the standard teal so ABGR2222 quantization matches the other apps.
• manifest.json: icons switches to the {"normal", "small"} PNG-pair form pack_variants.py already supports, and min_target_version goes 0.0.0 → 1.4.0 — Walking's config relies on the 1.4.x Hiking engine's sport parameterization, so the alias should not resolve against an older Hiking. Note the packed field is the A.B.C u32: pre-release suffixes are not representable, so 1.4.0-rc* builds count as 1.4.0 and satisfy the gate.
• apps-ci.yml: the pack-variants job installs Pillow — the PNG conversion path in make_variant.py needs it, and the workflow comment had explicitly reserved this install for the first custom-icon variant.

Verification

• Local CI-shape pack (--built-apps with a Hiking_1.4.0-rc2 artifact, --only Walking) reproduces the alias installed and render-verified on a watch running 1.4.0-rc2 — byte-identical except the two minTargetVersion bytes and the trailing CRC (the icon-only build hashed 565ad39d8c45…, matching the on-watch file exactly). Launcher icon, adjacent-row small icon, and titles all checked on-device.
• Both icon sizes also render-checked in the kernel GUI simulator alongside Hiking/Running for visual consistency.

Summary by CodeRabbit

• New Features

  • Updated the Walking app variant with separate normal and small icons for improved display across supported contexts.

• Compatibility

  • The Walking app variant now requires target version 1.4.0 or later. Older target versions are no longer supported.

[coderabbitai]

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ℹ️ Recent review info

⚙️ Run configuration

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📥 Commits

Reviewing files that changed from the base of the PR and between f5fd730 and 067c585.

📒 Files selected for processing (1)

• Examples/Apps/Variants/Walking/manifest.json

🚧 Files skipped from review as they are similar to previous changes (1)

• Examples/Apps/Variants/Walking/manifest.json

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📝 Walkthrough

Walkthrough

The Walking variant manifest now specifies separate normal and small icons and requires target version 1.4.0. The variant-packing CI job installs Pillow for PNG-to-ABGR2222 icon conversion.

Changes

Variant icon packaging

Layer / File(s)	Summary
Explicit icons and packing dependency .github/workflows/apps-ci.yml, Examples/Apps/Variants/Walking/manifest.json	The manifest raises min_target_version to 1.4.0 and defines separate normal and small icon files. The pack-variants job installs Pillow before packing variants.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

• UNAWatch/una-sdk#256: This PR extends the variant CI packaging and Walking manifest changes from that PR.
• UNAWatch/una-sdk#257: This PR also modifies the Walking manifest and variant compatibility behavior.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: shipping Walking's own designer icon.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/walking-designer-icon

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