Get Open Reviews Summary

Every open review, annotated with where its current stage stands.

Powers the Reviews page's open view. Distinct from /reviews/all, which returns the reviews themselves: each row here carries the services in scope plus the stage-specific progress that helpers/review_stage_progress.py derives — a questionnaire's due date and who it is out with, the requirements left to review, the reports produced. The IRA is the one per-service stage, and its deriver folds the review's services into a single measure rather than splitting the row, since every other stage is review-level work that a per-service row would just repeat.

Only the initial and periodic flows and their fintech variants (STANDARD_FLOW_REVIEW_TYPES) are in scope. Inventory refresh and RM Scorecard walk their own abbreviated stage lists, so their rows would sit in lanes the rest of the pipeline doesn't have and be measured by stage rules written for the diligence flow. review_type narrows within that scope, as on /reviews/all, so Vendor Management and Fintech Partners each see only their own pipeline.

Unpaginated on purpose: the page groups rows by stage and needs the whole set to show how open work distributes across the pipeline.