[claude-code] Add model catalog and provider settings types

[edelauna]

Parent issue

#756

Context

Add the @roo-code/types definitions needed by all other claude-code sub-issues. Follows the same pattern as packages/types/src/providers/openai-codex.ts.

Files

• packages/types/src/providers/claude-code.ts (new)
• packages/types/src/providers/index.ts
• packages/types/src/provider-settings.ts

Work

• Add claudeCodeModels record reusing Anthropic model metadata shapes with inputPrice: 0, outputPrice: 0 (subscription-based)
• Add ClaudeCodeModelId type and claudeCodeDefaultModelId
• Add claudeCodeSchema to provider-settings.ts: { claudeCodeCliPath?: z.string().optional() } — no API key field
• Add "claude-code" to the provider union and allProviderModelFields

Tests

packages/types/src/__tests__/claude-code.spec.ts

• Default model ID exists in the models record
• All models have inputPrice: 0 and outputPrice: 0
• Schema accepts valid input (empty object, with claudeCodeCliPath)
• Schema rejects unknown keys in strict mode

Acceptance criteria

• ClaudeCodeModelId, claudeCodeModels, claudeCodeDefaultModelId are exported from @roo-code/types
• ProviderSettings accepts claudeCodeCliPath as optional string
• "claude-code" is a valid ApiProvider value
• All unit tests pass