broker: rugnux live - rugnux runs inside the broker while a DECTRIS rotation collection arrives (demo prototype)

A DECTRIS rotation collection, with the mode switched on (PUT /config/rugnux), goes to
JFJochReceiverRugnux instead of JFJochReceiverLite: the images are forwarded as before, without the
per-image analysis, and one rugnux thread reads them back from the image buffer
(JFJochImageBufferReader) as they arrive. END waits for rugnux and carries its lattice, refined
geometry and per-image results. A small second run on the first 60 degrees reports early whether
there is a lattice. The live state, steps and result are at GET /rugnux/status and on a new
"Rugnux live" frontend page.

rugnux: ProcessConfig::fast_live takes every decision where it is first made and does nothing again
once the sweep is in (near-tie re-checks and the run made again, rotation-scale walk, metric-symmetry
arms, geometry walk, the supercell and quality guards, the doubled cell), so the run ends a fixed
time after the last image. A cut (/cancel, or deadline_s after the last image) hands over what is
established. Off by default: the CLI and the battery are unchanged (--fast-live is hidden, with
--simulate-live).

With the mode off the broker is unchanged. Not built yet.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/python_client/README.md

@@ -126,6 +126,10 @@ Class | Method | HTTP request | Description
 *DefaultApi* | [**config_mask_tiff_get**](docs/DefaultApi.md#config_mask_tiff_get) | **GET** /config/mask.tiff | Get mask of the detector (TIFF)
 *DefaultApi* | [**config_roi_get**](docs/DefaultApi.md#config_roi_get) | **GET** /config/roi | Get ROI definitions
 *DefaultApi* | [**config_roi_put**](docs/DefaultApi.md#config_roi_put) | **PUT** /config/roi | Upload ROI definitions
+*DefaultApi* | [**config_rugnux_get**](docs/DefaultApi.md#config_rugnux_get) | **GET** /config/rugnux | Get rugnux live mode settings and model status
+*DefaultApi* | [**config_rugnux_model_delete**](docs/DefaultApi.md#config_rugnux_model_delete) | **DELETE** /config/rugnux/model | Remove the model used by rugnux live mode
+*DefaultApi* | [**config_rugnux_model_put**](docs/DefaultApi.md#config_rugnux_model_put) | **PUT** /config/rugnux/model | Upload the model used by rugnux live mode
+*DefaultApi* | [**config_rugnux_put**](docs/DefaultApi.md#config_rugnux_put) | **PUT** /config/rugnux | Change rugnux live mode settings
 *DefaultApi* | [**config_select_detector_get**](docs/DefaultApi.md#config_select_detector_get) | **GET** /config/select_detector | List available detectors
 *DefaultApi* | [**config_select_detector_put**](docs/DefaultApi.md#config_select_detector_put) | **PUT** /config/select_detector | Select detector
 *DefaultApi* | [**config_spot_finding_get**](docs/DefaultApi.md#config_spot_finding_get) | **GET** /config/spot_finding | Get data processing configuration
@@ -149,11 +153,13 @@ Class | Method | HTTP request | Description
 *DefaultApi* | [**image_buffer_status_get**](docs/DefaultApi.md#image_buffer_status_get) | **GET** /image_buffer/status | Get status of the image buffers
 *DefaultApi* | [**image_pusher_status_get**](docs/DefaultApi.md#image_pusher_status_get) | **GET** /image_pusher/status | Get status of image pusher
 *DefaultApi* | [**initialize_post**](docs/DefaultApi.md#initialize_post) | **POST** /initialize | Initialize detector and data acquisition
+*DefaultApi* | [**live_events_get**](docs/DefaultApi.md#live_events_get) | **GET** /live/events | Event stream of the collection, for a reader following it
 *DefaultApi* | [**pedestal_post**](docs/DefaultApi.md#pedestal_post) | **POST** /pedestal | Collect dark current for the detector
 *DefaultApi* | [**preview_pedestal_tiff_get**](docs/DefaultApi.md#preview_pedestal_tiff_get) | **GET** /preview/pedestal.tiff | Get pedestal in TIFF format
 *DefaultApi* | [**preview_plot_bin_get**](docs/DefaultApi.md#preview_plot_bin_get) | **GET** /preview/plot.bin | Generate 1D plot from Jungfraujoch and send in raw binary format. Data are provided as (32-bit) float binary array. This format doesn't transmit information about X-axis, only values, so it is of limited use for azimuthal integration. 
 *DefaultApi* | [**preview_plot_get**](docs/DefaultApi.md#preview_plot_get) | **GET** /preview/plot | Generate 1D plot from Jungfraujoch
 *DefaultApi* | [**result_scan_get**](docs/DefaultApi.md#result_scan_get) | **GET** /result/scan | Get full scan result
+*DefaultApi* | [**rugnux_status_get**](docs/DefaultApi.md#rugnux_status_get) | **GET** /rugnux/status | Get live rugnux processing status of the last collection
 *DefaultApi* | [**start_post**](docs/DefaultApi.md#start_post) | **POST** /start | Start detector
 *DefaultApi* | [**statistics_calibration_get**](docs/DefaultApi.md#statistics_calibration_get) | **GET** /statistics/calibration | Get calibration statistics
 *DefaultApi* | [**statistics_data_collection_get**](docs/DefaultApi.md#statistics_data_collection_get) | **GET** /statistics/data_collection | Get data collection statistics
@@ -223,6 +229,11 @@ Class | Method | HTTP request | Description
  - [RoiCircleList](docs/RoiCircleList.md)
  - [RoiDefinitions](docs/RoiDefinitions.md)
  - [RotationAxis](docs/RotationAxis.md)
+ - [RugnuxLiveStatus](docs/RugnuxLiveStatus.md)
+ - [RugnuxLiveStep](docs/RugnuxLiveStep.md)
+ - [RugnuxSettings](docs/RugnuxSettings.md)
+ - [RugnuxStatus](docs/RugnuxStatus.md)
+ - [RugnuxSummaryRow](docs/RugnuxSummaryRow.md)
  - [ScanResult](docs/ScanResult.md)
  - [ScanResultImagesInner](docs/ScanResultImagesInner.md)
  - [SpotFindingSettings](docs/SpotFindingSettings.md)