Use promkit-widgets v0.3.0

[ynqa]

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[Copilot]

Pull request overview

Updates the application to the promkit-widgets v0.3.0 API, including migrating widget state/config usage and aligning the project’s TOML configuration schema and documentation with the new upstream config types.

Changes:

• Refactor Listbox/Text/TextEditor/JsonStream state initialization to use the new config-centric APIs in promkit-widgets v0.3.0.
• Simplify src/config.rs by embedding promkit_widgets::{text_editor,jsonstream,listbox}::Config directly and remove now-unneeded custom serde glue.
• Update default.toml and README configuration examples to the new table structure (e.g., [editor.on_focus], [json.stream], [completion.listbox]).

Reviewed changes

Copilot reviewed 10 out of 11 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/search.rs	Update listbox usage to new API (state.config.lines, Listbox::from).
src/prompt.rs	Migrate text::State styling to text::Config { style: Some(...) }.
src/main.rs	Wire listbox::Config, text_editor::Config, and jsonstream::Config from the loaded config into widget states/providers.
src/json.rs	Switch JSON stream formatting from RowFormatter to jsonstream::Config, and update text styling to config-based API.
src/editor.rs	Replace per-field theme application with swapping entire text_editor::Config; update word break / mode access.
src/config/text_editor.rs	Remove custom serde for editor mode (no longer needed).
src/config.rs	Restructure config types to directly use promkit-widgets config structs and keep keybind serde via event_set_serde.
default.toml	Update config schema to match new embedded config structs and termcfg notation examples.
README.md	Update documented config example to new schema and wrap settings in a <details> block.
Cargo.toml	Bump promkit-widgets to v0.3.0 (currently via local path override).
Cargo.lock	Lockfile updates reflecting the dependency change (currently consistent with path-based resolution).

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