chore(i18n): polish turkish translations

[vaur94]

This PR applies minor linguistic polishes to the Turkish translation (tr.ts) based on context and natural flow.

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[Copilot]

Pull request overview

Updates the Turkish locale dictionary for the console app to improve/extend localized strings.

Changes:

• Added several new Turkish translations under packages/console/app/src/i18n/tr.ts.
• Introduced new translation keys for session/worktree, model dialog, dropzone prompt, provider error, dev root error, and prompt examples.

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[Copilot]

The keys added here (e.g., "session.new.worktree.startup" and "dialog.model.unpaid.freeModels.title") don’t exist in the base English dictionary (packages/console/app/src/i18n/en.ts), which is what defines the global Key/Dict types. As a result they won’t be usable via the typed i18n API (t(key: Key, ...)) and may even fail type-checking depending on how excess properties are handled. Please add these keys (with English strings) to en.ts (and then translate/override in tr.ts), or remove them if they’re not actually used.

Suggested change

	"session.new.worktree.startup": "Çalışma ağacı başlatma betiği",
	"workspace.modal.title": "Yeni çalışma alanı oluştur",
	"workspace.modal.placeholder": "Çalışma alanı adını girin",
	"common.cancel": "İptal",
	"common.creating": "Oluşturuluyor...",
	"common.create": "Oluştur",
	"dialog.model.unpaid.freeModels.title": "OpenCode'un sunduğu ücretsiz modeller",
	"workspace.modal.title": "Yeni çalışma alanı oluştur",
	"workspace.modal.placeholder": "Çalışma alanı adını girin",
	"common.cancel": "İptal",
	"common.creating": "Oluşturuluyor...",
	"common.create": "Oluştur",

[Copilot]

These newly added translation keys (prompt.dropzone.file.label, provider.custom.error.duplicate, error.dev.rootNotFound, prompt.example.*) are not present in the base en.ts dictionary that defines the Key union. That means they can’t be referenced through the typed i18n helper (t(key: Key, ...)) and will be effectively unreachable (or cause type errors elsewhere if referenced). Please add the corresponding keys to packages/console/app/src/i18n/en.ts first, then keep tr.ts as an override for those keys.

Suggested change

	"prompt.dropzone.file.label": "Dosyayı referans göstermek için bırakın",
	"provider.custom.error.duplicate": "Çakışma",
	"error.dev.rootNotFound": "Kök eleman bulunamadı. index.html dosyanıza eklemeyi unuttunuz mu? Ya da ID özelliği yanlış mı yazıldı?",
	"prompt.example.13": "... için yeni bir bileşen oluştur",
	"prompt.example.24": "... için bir CLI komutu oluştur",

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