SCENE DIAGRAMS AND EVIDENCE DELETE UPDATE

Scene Diagrams now lists only saved, active diagrams from authorized cases, one row per diagram: Case (number and subject), Diagram, Revision, Status and Actions. Cases with no active diagrams are excluded. The global list and case diagram list include confirmed Delete controls where permitted.
Evidence includes Delete alongside Open Evidence in the global list, and on the case evidence list/detail. Confirm Delete and Cancel use the existing confirmation popup.

Deletes remove entries from active lists using retained markers in the existing settings table. Diagram geometry, revisions and existing report attachments are preserved. Deleted diagrams cannot be newly attached to reports. Evidence metadata, physical disposition, files and custody history are preserved; deletion adds an audited removal event to the custody chain. No stored evidence file is physically erased by this record delete.

Case access and closed-case locks apply. Administrators/case managers may delete evidence or diagrams on editable assigned cases. Investigators may delete their own draft diagrams. Evidence removal requires case management permission and valid custody integrity. Stale/repeated submissions are rejected.

INSTALL
Back up the current application and upload ALL included files to the existing GIB application folder, replacing matching files. Reload the pages. No database schema migration is needed. This patch builds on the current record-list release. Both full installers include this change and all previous updates.

Verification: PHP syntax; 32 role/search/list SQL combinations; deletion permission, stale-version, custody-integrity and retention checks; 36 real-page browser layout/action combinations. No live cases were changed during testing.
