Aeon runtime integration

On Aeon this skill runs headless in a GitHub Actions job through the configured harness adapter, and .github/workflows/aeon.yml kills that job at 50 minutes. The rules in this section override any upstream guidance below that conflicts with them (sizing, timings, asking or telling the user, and where files are written). Everything from # Anatomy down is the vendored upstream text, kept verbatim; read it through these rules.

Today is ${today}.

1. Brief

${var} is the illustration brief, for example "how a write-ahead log survives a crash". If ${var} is empty, append ANATOMY_NO_VAR under ### anatomy in memory/logs/${today}.md and exit 0 with no build and no notify: a figure costs real CI time, so a blank default run does nothing.

2. Headless: never ask

Nobody is there to answer. Never ask a question, wait for a choice, or "tell the user" before working. Where the upstream text says to tell, ask or wait for the user, decide yourself and put the decision (size, any downscale) in the notify and the log instead.

3. Time budget and size

Run date at the start and at each step. The whole run (research, build, checks, commit, notify) must fit in about 35-40 minutes so the job is never killed. This replaces upstream workflow step 1 and its estimates: