* refactor(api): extend git generation payload types
* refactor(settings): add git provider model fields
* feat(config): persist git provider model defaults
* feat(git-api): send provider and model ids
* fix(git-api): forward generation options in runtime
* feat(git-view): use configured model for commit generation
* feat(git-view): pass configured model for PR generation
* feat(vscode): forward model selection in git bridge payload
* feat(vscode): align PR generation with session model flow
* feat(web): resolve and generate git text with provider model
* refactor(settings): unify utility model picker across providers
* chore(settings): rename sidebar item to utility model
* fix(git-model): validate and auto-heal stale utility selections
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Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>
