The frontend router navigates to /instances/:instanceId/terminal without
project_id or repo_id. The backend terminal REST endpoints were requiring
these path params, causing 404s.
- Simplify _get_terminal_instance to validate by instance_id only
- Update all REST routes from /projects/{pid}/repositories/{rid}/instances/{iid}/terminal/*
to /instances/{instance_id}/terminal/*
- Update frontend API client to match new paths
- Update useTerminalSessions hook to take instanceId only
- Update TerminalPage to use simplified hook
- Update tests to match new paths
Fixes: 404 on GET /projects/repositories/instances/{id}/terminal/sessions
The production database was stamped with a migration that no longer exists
in the codebase (created on another branch, applied, then removed). This
adds a no-op bridge migration so Alembic can reconcile the DB state.
- Create bridge migration 2026_05_28_add_tool_definition_manifests (no-op)
- Re-chain terminal_sessions migration to depend on the bridge
- Fixes startup failure: Can't locate revision identified by ...
alex