Regenerate CLI from latest OAS

[carlostasada]

Summary

• Sync OpenAPI specs and regenerate CLI clients, commands, and metadata
• Remove market-data commands no longer present upstream (data index, data fixed-income)
• Adapt order submit hook to CreateOrderRequest body rename
• Pick up new flags (--order-id on account activity, --data-quality on corporate-actions)
• Refresh docs, goldens, and integration coverage

Test plan

• make check
• make test-integration — suite passes except TestPositionCloseAll / TestPositionCloseAll_CancelOrders (paper account returns 403 closing leftover equity positions; unrelated to this regenerate)

[greptile-apps]

Greptile Summary

The PR refreshes the Trading and Market Data OpenAPI contracts and regenerates the corresponding clients, types, operation metadata, and CLI command tree.

• Adds OAS 3.1 nullable-type handling to the generator.
• Replaces index commands with grouped fixed-income price and quote commands.
• Adapts order submission to the renamed CreateOrderRequest type.
• Adds account-activity and corporate-action flags and refreshes tests, fixtures, and documentation.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
cmd/generate/main.go	Adds centralized OAS 3.0/3.1 schema-type and nullability parsing across generated types, requests, responses, and flags.
cmd/generate/commands.go	Replaces index command registration with grouped fixed-income operations and applies schema-type parsing to body-field classification.
internal/cmd/order.go	Updates the order preparation hooks to consume the renamed generated CreateOrderRequest without changing their behavior.
internal/cmd/commands.gen.go	Regenerates the public CLI command tree and request mapping from the refreshed API specifications.
internal/api/trading_types.gen.go	Refreshes generated Trading API models, including the renamed order-creation request.
internal/api/marketdata_types.gen.go	Refreshes generated Market Data API models for the updated schemas and operations.
README.md	Updates the documented market-data command areas to match the regenerated command tree.
test/integration/data_fixed_income_test.go	Updates fixed-income integration coverage for the new grouped price and quote command paths.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart LR
    OAS[Updated OpenAPI specs] --> Generator[CLI generator]
    Generator --> Types[Generated Go types]
    Generator --> Clients[Generated API clients]
    Generator --> Metadata[Operation and flag metadata]
    Metadata --> Commands[Generated CLI command tree]
    Types --> Commands
    Clients --> Commands
    Commands --> Tests[Goldens and integration tests]

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_{Reviews (3): Last reviewed commit: "Regenerate CLI from latest OAS" | Re-trigger Greptile}

[sachyco]

@greptile