Ramnique Singh issues

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                                            Ramnique Singh

Add support for Openrouter + LiteLLM

RAG using text, file uploads, firecrawl

Allow configuring ports

Allow configuring the default port (3000) for the rowboat service

Support and document custom provider for RAG file uploads

enable and document the following env vars for RAG file uploads: ``` export FILE_PARSING_PROVIDER_BASE_URL=... export FILE_PARSING_PROVIDER_API_KEY=... ```

Better error reporting for known errors

Certain errors, like openai errors, should be propagated to the UI. See example screenshot below. ![Image](https://github.com/user-attachments/assets/00c58a10-778b-4fd2-8ed2-9ae07acd0e87)

`gemini-3-pro-preview` returns `undefined` fields inside `providerMetadata`, causing ai-sdk validation failures

# Summary When calling `gemini-3-pro-preview` through the OpenRouter provider, the returned `providerMetadata` object includes fields with the literal value `undefined` (e.g., `cost: undefined`). This violates the `JSONValue` type expected by...

Launch HN: Code-review

# DO NOT MERGE! This PR is meant for code-review only

Ramnique Singh