v0.15.0

[ynqa]

Summary

This PR prepares promkit v0.15.0 with more explicit renderer layout policies and independently reusable prefix-search results.

• Add HeightPolicy to support:
  • OrderedContent for content-sized widgets allocated in order
  • FairContent for equal-share allocation capped by content height
  • FairFill for equal-share allocation that preserves the assigned height
• Extract vertical height allocation from the renderer layout and add unit and terminal-level regression coverage
• Add configurable Wrap and Truncate overflow modes to the text widget
• Refactor PrefixSearch so queries return independently selectable PrefixSearchResult snapshots
• Remove the status widget and its Cargo feature
• Update documentation and examples for the new APIs
• Bump crate versions:
  • promkit to 0.15.0
  • promkit-core to 0.6.0
  • promkit-widgets to 0.8.0

Breaking changes

• WidgetLayout now exposes a height_policy field.
• PrefixSearch::search has been replaced by PrefixSearch::query.
• Prefix-search widget state now receives a PrefixSearchResult through its result field.
• The status feature and promkit_widgets::status module have been removed.
• Text widget configuration now includes overflow_mode.

Validation

• cargo fmt --all -- --check
• cargo clippy
• cargo test -- --nocapture --format pretty

The new height policies are also covered by termharness scenarios for ordered allocation, fair content sizing, and fair fill sizing.

[Copilot]

Pull request overview

Updates the workspace documentation and crate manifests to reflect the v0.15.0 release, including aligning internal crate dependency pins to the newly published versions.

Changes:

• Bump promkit crate version to 0.15.0 and update its pinned internal dependencies (promkit-core / promkit-widgets).
• Bump promkit-core to 0.6.0 and promkit-widgets to 0.8.0.
• Update version references in repository docs (README.md, Concept.md, and promkit-widgets/README.md) to match the new release.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
README.md	Updates the installation snippet to promkit = 0.15.0.
promkit/Cargo.toml	Bumps promkit to 0.15.0 and pins promkit-core = 0.6.0 / promkit-widgets = 0.8.0.
promkit-widgets/README.md	Updates usage examples to promkit = 0.15.0 and promkit-widgets = 0.8.
promkit-widgets/Cargo.toml	Bumps promkit-widgets to 0.8.0 and pins promkit-core = 0.6.0.
promkit-core/Cargo.toml	Bumps promkit-core to 0.6.0.
Concept.md	Updates the feature example snippet to promkit = 0.15.0.

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