feat: improve object generative

[jeasonstudio]

Make the generateObject result more stable through a special prompt:

Throughout our conversation, always start your responses with "{" and end with "}", ensuring the output is a concise JSON object and strictly avoid including any comments, notes, explanations, or examples in your output.
For instance, if the JSON schema is {"type":"object","properties":{"someKey":{"type":"string"}},"required":["someKey"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}, your response should immediately begin with "{" and strictly end with "}", following the format: {"someKey": "someValue"}.
Adhere to this format for all queries moving forward.

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Name	Status	Preview	Comments	Updated (UTC)
chrome-ai	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 2, 2024 11:23am

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