ALFMOB-273: Source Chip styling from semantic Theme tokens

[khoinguyen-mindera]

Ticket

ALFMOB-273

Summary

• Extract ChipStyle value type from Chip (mirrors the BadgeHelper pattern) so the state→style mapping is unit-testable without snapshots
• Source Chip's colors from the semantic Theme.* layer instead of raw primitives: borderSoft / contentContentPrimary / surfaceForegroundPrimary (border), contentContentPrimaryDisabled (text), surfaceBackgroundPrimary / surfaceForegroundPrimary (background)
• Source the normal border width from Primitives.Border.borderWeightDefault instead of a hardcoded 1.0 (consistent with Badge ALFMOB-269)
• Default text stays on raw neutrals600 — no Theme alias exists at that value
• Purely a token/naming refactor: every alias resolves to the same primitive, so rendering is unchanged for all selected/unselected/disabled states
• Add ChipStyleTests (21 XCTest cases) covering every state→token mapping plus counter-label boundaries

Screenshot

[Copilot]

Pull request overview

This PR refactors the SharedUI Chip component’s styling to be driven by semantic Theme.* tokens where available, and extracts the state→style resolution into a testable value type (ChipStyle). It also adds unit tests to cover the state→token mapping and counter-label logic.

Changes:

• Extract ChipStyle from Chip and rewire Chip.body to consume ChipStyle properties.
• Replace hardcoded normal border width (1.0) with CGFloat(Primitives.Border.borderWeightDefault) and map eligible colors through semantic Theme.* aliases.
• Add ChipStyleTests to cover border/text/background color mapping, border width, height, and counter label boundaries.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
Docs/Plans/ALFMOB-273-refactor-chip-tokens/scope.md	Scout report documenting existing token usage and remaining hardcoded constants.
Docs/Plans/ALFMOB-273-refactor-chip-tokens/plan.md	Plan defining semantic token mapping decisions and test strategy for ChipStyle.
Docs/Plans/ALFMOB-273-refactor-chip-tokens/phase-1-chip-tokens.md	Execution steps and acceptance criteria for the single-slice refactor + tests.
Docs/Plans/ALFMOB-273-refactor-chip-tokens/grill.md	Recorded decisions for semantic aliases and the ChipStyle extraction approach.
Docs/Plans/ALFMOB-273-refactor-chip-tokens/_status.md	Status tracking for the ticket workflow and verification checkpoints.
Alfie/AlfieKit/Sources/SharedUI/Components/Chips/Chip.swift	Implements ChipStyle, migrates styling to semantic tokens + border token, rewires Chip rendering.
Alfie/AlfieKit/Tests/SharedUITests/ChipStyleTests.swift	Adds unit coverage for state→style/token mapping and counter label formatting.