feat: SDK with x-speakeasy-name-override schema naming

[louis-sanna-dev]

Summary

SDK regenerated from V2 spec with improved schema naming.

Related: dashboard#17924

Naming Convention

We use x-speakeasy-name-override to control SDK type names. The convention follows OpenAI/Google patterns:

1. Request Body Schemas (POST/PUT body)

Pattern: {Verb}{Entity}Request

CreateBatchJobRequest   (was: BatchJobIn)
CreateLibraryRequest    (was: LibraryIn)

2. Response Schemas (list/delete wrappers)

Pattern: {Verb}{Entity}Response

ListBatchJobsResponse   (was: BatchJobsOut)
ListFilesResponse       (was: ListFilesOut)
DeleteFileResponse      (was: DeleteFileOut)

3. Entity Schemas (the actual resource)

Pattern: Just the entity name

BatchJob                (was: BatchJobOut)
Library                 (was: LibraryOut)
Document                (was: DocumentOut)
FileObject              (was: FileSchema)

Example Usage

from mistralai.client import Mistral
from mistralai.client.models import BatchJob, ListBatchJobsResponse, FileObject

client = Mistral(api_key="...")

# create() returns BatchJob entity
job: BatchJob = client.batch.jobs.create(endpoint="/v1/chat/completions", ...)
print(job.id)       # BatchJob has .id, .status, .created_at, etc.
print(job.status)

# get() also returns BatchJob entity  
job: BatchJob = client.batch.jobs.get(job_id="...")

# list() returns ListBatchJobsResponse which contains BatchJob entities
response: ListBatchJobsResponse = client.batch.jobs.list()
for job in response.data:  # each item is a BatchJob
    print(job.id)

# Files use FileObject entity
files_response: ListFilesResponse = client.files.list()
for file in files_response.data:  # each item is a FileObject
    print(file.id, file.filename)

Where users see each type:

• Entity (BatchJob, FileObject) - Return type of create(), get(), items in list responses
• Response (ListBatchJobsResponse) - Return type of list(), wraps entities + pagination
• Request (CreateBatchJobRequest) - Internal, users pass kwargs instead

Test plan

• Lint passes
• Examples pass
• Typed example with mypy check added