…led` events (#374)

* format

* update tests

* bump version

* Add ETag support for local evaluation polling

Add support for HTTP conditional requests using ETags to reduce bandwidth
when polling for feature flag definitions. When flag definitions haven't
changed, the server returns 304 Not Modified and the SDK skips processing.

- Add GetResponse dataclass to encapsulate response data, ETag, and status
- Update get() to send If-None-Match header and handle 304 responses
- Store ETag in client and pass it on subsequent polling requests
- Skip flag processing when 304 Not Modified is received

* Use _session rather than requests

Benefits:

1. Reuses TCP connections via keep-alive
2. 2 retries on connect/read errors
3. Faster handshakes

* Add unit tests for get() function

Test HTTP-level behavior including:
- ETag extraction from response headers
- If-None-Match header sent when etag provided
- 304 Not Modified response handling
- Fallback when 304 has no ETag header
- Error response handling (APIError)
- Authorization and User-Agent headers
- Timeout and URL construction

* Add defensive null check for response.data

Guard against unexpected None data in non-304 responses to prevent
TypeError when accessing dictionary keys.

* Clear stored ETag when server stops sending one

If the server stops including ETag headers in responses, clear the
stored ETag so we don't keep sending a stale If-None-Match header.

* Mask API tokens in log messages

Keep first 10 chars visible for identification while hiding the rest.
Addresses CodeQL security warning about logging sensitive data.

* Ran ruff format

Captured events now use local evaluation results when
`send_feature_flags` is `True` and local evaluation is enabled.

* feat: mask values

* feat: wip

* fix: ruff

* feat: wip

* feat: wip

* fix: ruff

* fix: ruff

* feat: wip

* feat: wip

* feat: version bump

* feat: Allow customization of socket options

This allows clients to configure (e.g.) socket keep alive probes

* test: Prevent leaking modified _session

* chore: Add a type ignore

* feat: Add `disable_connection_reuse` config method

Disables connection pooling

* set_socket_options is idempotent

* fix: remove unused

* fix: remove exception type

* fix: wip