History / Theatre Surgery Bill Validation

docs(theatre): document Surgery Bill Summary / Validate workflow - New page: how to reach Bill Summary/Validate from both the Surgery Workbench and Manage Surgeries, checking bills, validating, the server-side lock, and reverting validation - Cross-linked from Theatre-Surgery-Workbench.md - Notes retirement of the standalone Store Issue for Theatre entry point in favour of Medicine Issue Refs hmislk/hmis#22958

buddhika75 committed Aug 15, 2026