v0.2.1 — telegram-dev

Hygiene from the 2026-09-13 family audit (HK-11). The install section showed four
channels and no invocation form, so a reader who installed the pack had nothing telling
them what to type. Both forms are written — /telegram-dev:<skill> and /<skill> —
because which one resolves depends on how the pack was installed, and promising one is
how a reader concludes the skill is not there.