which-sem: show all SemVer options with selected one highlighted

[Copilot]

• Add SemVerSelector struct to cli_helper.rs that displays all three SemVer options with the selected one boxed
• Update main.rs to use SemVerSelector for which-sem output
• Add tests for SemVerSelector in cli_helper.rs
• Refactor: replace String-based selection with enum SemVerPart { Major, Minor, Patch }
• Bump version to 0.18.3 in Cargo.toml

Original prompt

---

This section details on the original issue you should resolve

<issue_title>new-format in whichi-sem</issue_title>
<issue_description>```
shoud increase at
╭──────╮
│ Minor │
╰──────╯

current format is difficult to read.

## new format

show list of SemVer and focus llm's response

  ╭──────╮

|MAJOR│ Minor | PATCH |
╰──────╯

## ref

> MAJOR version when you make incompatible API changes
> MINOR version when you add functionality in a backward compatible manner
> PATCH version when you make backward compatible bug fixes
https://semver.org/</issue_description>

<agent_instructions>please add this issue feature</agent_instructions>

## Comments on the Issue (you are @copilot in this section)

<comments>
</comments>

• Fixes new-format in whichi-sem #64

---

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[Uliboooo]

Request Changes

SemVer parts (MAJOR/MINOR/PATCH) are a closed and invariant domain, but the current implementation models them as dynamic strings (SEM_VER_ITEMS, self.selected: String, position, to_lowercase, unwrap_or).
This weakens semantics and introduces unnecessary runtime logic for a fixed structure.

Reasons

• SemVer is a fixed structure and should be represented as an enum
• String-based lookup allows invalid states
• unwrap_or silently hides errors
• The logic is more dynamic than the problem requires

Direction

• Introduce enum SemVerPart { Major, Minor, Patch }
• Replace string-based selection with SemVerPart
• Use match and minimal rendering logic
• Remove string comparison and index search

Goal: explicit domain modeling with enum and minimal logic.

[Copilot]

Request Changes

SemVer parts (MAJOR/MINOR/PATCH) are a closed and invariant domain, but the current implementation models them as dynamic strings (SEM_VER_ITEMS, self.selected: String, `posit...

Done in beea831.

• enum SemVerPart { Major, Minor, Patch } with FromStr (case-insensitive match, explicit Err on unknown input) and a private label() method
• SemVerSelector::new now takes SemVerPart directly — no string storage, no position(), no unwrap_or
• Display for SemVerSelector compares via PartialEq on the enum
• In main.rs the LLM response is parsed with res.0.trim().parse::<SemVerPart>().map_err(Error::InvalidSemVer)? — invalid input surfaces as an explicit error instead of silently falling back

[Uliboooo]

ok. thx.

[Uliboooo]

please update version info of Cargo.toml

sorry. i forgot order that update version info of Cargo.toml

[Copilot]

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[Copilot]

@Uliboooo The model claude-sonnet-4.6 is not available for your account. This can happen if the model was disabled by your organization's policy or if your Copilot plan doesn't include access to it.

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[Copilot]

@Uliboooo The model claude-sonnet-4.6 is not available for your account. This can happen if the model was disabled by your organization's policy or if your Copilot plan doesn't include access to it.

You can try again without specifying a model (just @copilot) to use the default, or choose a different model from the model picker.

If you want to contact GitHub about this error, please mention the following identifier so they can better serve you: bbe3e987-cf11-4c47-b18b-fa6c47b4c563

[Copilot]

@Uliboooo The model claude-sonnet-4.6 is not available for your account. This can happen if the model was disabled by your organization's policy or if your Copilot plan doesn't include access to it.

You can try again without specifying a model (just @copilot) to use the default, or choose a different model from the model picker.

If you want to contact GitHub about this error, please mention the following identifier so they can better serve you: bbe3e987-cf11-4c47-b18b-fa6c47b4c563

[Uliboooo]

please update version info of Cargo.toml

[Copilot]

please update version info of Cargo.toml

Done in 81123ff — bumped version from 0.18.2 to 0.18.3 in Cargo.toml.

[Uliboooo]

why do you choose patch field?

[Uliboooo]

why do you choose patch field?

[Uliboooo]

fix by me