[IC-091] Run production-like load tests for session creation, uploads, processing, review, and webhooks.

[github-actions]

Outcome

Run production-like load tests for session creation, uploads, processing, review, and webhooks.

Acceptance checks

• Capacity limits and bottlenecks are recorded; tests use synthetic data; pass/fail thresholds protect the pilot target.

Dependencies

IC-086, IC-087

Planning metadata

• Priority: P0
• Milestone: Milestone 9 — Operations and pilot readiness

Definition of done

• Automated tests cover the change where practical.
• Tenant/environment isolation and failure paths were reviewed.
• Logs and errors contain no secrets, PII, documents, or biometric data.
• Relevant API, architecture, operations, and user documentation is updated.
• The pull request links this issue and lists verification commands.
  Generated from docs/planning/implementation-backlog.md; edit the backlog and rerun the sync to change generated fields.