Adds autocannon as a devDependency for the load-test tooling (T001), and the
shared schema migration T002 blocks: SLARun.version for optimistic
concurrency, plus two Postgres partial unique indexes
(assignments_one_current_per_ticket, escalation_events_ticket_rule_unique)
guarding against the assignment and escalation races research.md documents.
Applied directly to both the real dev DB and the throwaway test DB.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
.env.development had a real Postgres/Redis password and JWT secret
committed in plain text; .env.test and .env.prod were tracked too.
Untrack all .env* files going forward and add .env.example as the
onboarding template instead.
Note: the exposed dev credentials are still in git history and must
be rotated separately.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
