feat: add CometAPI as a new provider

[tensornull]

CometAPI integration

Overview

Add CometAPI as a new router/provider so users can fetch and pick CometAPI models alongside existing sources.

Changes

• Provider: add cometapi to router models flow (parallel fetch + per-provider error events).
• Settings: support CometAPI Key (and Base URL, defaulting to https://api.cometapi.com/v1/).
• Models: integrate CometAPI into model cache and selection UI; failed fetch returns {} and emits a single error message.
• Tests: cover success/failure paths and event payloads for cometapi.

Setup & Usage

1. Get an API key from CometAPI: https://api.cometapi.com/console/token
2. Put the key into Kilocode settings (CometAPI Key).
3. Refresh router models; CometAPI models will appear if the key is valid.

Testing

• Unit tests updated; full repo tests are green.
• Manual: with a valid key, router models include cometapi; on errors, an error event is posted and the provider is empty in the final map.

Screenshots

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Latest commit: d93bf6c0dc698827a98e9a62d1b909017101d8ab

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[tensornull]

@Juice10 @kevinvandijk @drakonen @beatlevic @mrubens @saoudrizwan Hi ! Can you help me complete this PR?

Please let me know if anything else is needed.

Best regards !

[tensornull]

By the way, I fixed the error in pnpm test at the same time.😊