Parent: #14182
Depends on: #14586 (PR 1)

Goal

Move cron/ into hermes_agent/cron/. Small package (3 files), 15 external callers concentrated in 4 files.

What moves

Import rewrites

Internal: cron.* → hermes_agent.cron.*

External callers (15 refs in 4 files):

• tools/cronjob_tools.py (1 ref)
• hermes_cli/cron.py (12 refs)
• gateway/run.py (1 ref)
• gateway/platforms/api_server.py (1 ref)

Test files: ~81 import refs across tests/cron/ (~7 test files)

pyproject.toml changes

• REMOVE cron from packages.find include

Verification

rg "from cron[\. ]" --type py       # should return 0
rg "import cron\b" --type py        # should return 0
pytest