Enforce test environment isolation by reinstating testing triggers in AGENTS.md

Context

We need to re-add explicit triggers for the unit-test and whitebox-e2e skills in the AGENTS.md Workflow Skills table. During recent test executions, agents occasionally defaulted to generic test commands (like npx playwright test) because the explicit lifecycle triggers for these testing skills had been pruned from the routing table.

The Problem

Bypassing the mandated npm run test-unit script means tests execute without the necessary environment flag (UNIT_TEST_MODE=true). This lack of environment isolation can lead to unintended collisions between test runs and primary development databases or state directories.

Proposed Solution

Add the unit-test and whitebox-e2e skills back into the AGENTS.md Workflow Skills table. This ensures the Swarm reliably triggers the correct skill instructions, forcing test execution through the safe, isolated NPM scripts.

Tasks

• Add unit-test trigger to AGENTS.md
• Add whitebox-e2e trigger to AGENTS.md