[alexanto]

removes http options since they no longer make sense, whatever they can do, should be done with the transport option

[Copilot]

🟢 Approval recommended

No active review issues remain for the move to transport-based HTTP configuration.

No open issues 🎉

What changed in this PR

This PR removes HttpOptions from the v7 SDK configuration, making transports the configuration point for HTTP behavior in synchronous and asynchronous clients.

Changes:

• Removes http arguments, configuration fields, exports, and legacy request-option forwarding.
• Defaults feature-fetch retries to three and fixes streaming connections to SDK headers and a 30-second timeout.
• Updates tests and documentation for transport-based configuration and migration limitations.

File	Description
v7_MIGRATION_GUIDE.md	Explains transport-based migration and streaming limitations.
UnleashClient/​transport.py	Removes legacy HTTP-option validation and request kwargs.
UnleashClient/​constants.py	Removes the old retry constant.
UnleashClient/​connectors/​streaming_connector.py	Removes custom request options from streaming.
UnleashClient/​config.py	Removes HttpOptions and its configuration field.
UnleashClient/​clients/​unleash_client.py	Removes http and sets the streaming timeout directly.
UnleashClient/​clients/​async_unleash_client.py	Removes the async client’s http argument.
UnleashClient/​_unleash_api_client.py	Uses default transport and retry settings.
UnleashClient/​_retry.py	Introduces a default of three feature-fetch retries.
UnleashClient/​_headers.py	Stops merging custom headers from configuration.
UnleashClient/​_async_unleash_api_client.py	Uses default async transport and retry settings.
UnleashClient/​__init__.py	Removes the HttpOptions export.
tests/​utilities/​testing_constants.py	Removes obsolete HTTP test constants.
tests/​unit_tests/​test_unleash_api_client.py	Removes legacy HTTP configuration and related assertions.
tests/​unit_tests/​test_transport.py	Removes tests for deleted request-kwargs support.
tests/​unit_tests/​test_headers.py	Removes configuration-based custom-header tests.
tests/​unit_tests/​test_config.py	Adapts configuration tests to remaining option groups.
tests/​unit_tests/​test_async_unleash_api_client.py	Configures timeout through an explicitly closed transport.
tests/​unit_tests/​connectors/​test_polling_connector.py	Removes HTTP options from polling setup.
tests/​unit_tests/​connectors/​test_async_connector.py	Uses a fixture to disable fetch retries.
tests/​unit_tests/​clients/​test_unleash_client.py	Moves network timeout configuration to the transport.
tests/​unit_tests/​clients/​test_unleash_client_transport.py	Updates rejected-transport validation tests.
tests/​unit_tests/​clients/​test_async_unleash_client.py	Removes HTTP options and adopts the retry fixture.
tests/​unit_tests/​clients/​test_async_unleash_client_transport.py	Updates async rejected-transport validation tests.
tests/​specification_tests/​test_async_client_specs.py	Removes HTTP options from specification-test setup.
tests/​conftest.py	Adds a fixture that disables feature-fetch retries.
README.md	Updates configuration examples and transport limitations.
CHANGELOG.md	Records the HTTP configuration breaking changes.

_{Review effort: Balanced}