[Workflows/Agents] Validate imports/includes; add bats/jest smoke tests

[ashleyshaw]

Title: [Workflows/Agents] Validate imports/includes; add bats/jest smoke tests
Labels: area:workflows, v0.2.0, testing
Acceptance Criteria:

All Bash files use set -Eeuo pipefail.

Tests exist: tests/bash/.bats, tests/js/.test.js.
Owner: Workflows