#30 per-verb -h: spec pointers (flag names without docs = trial-error)

SOURCE: swarm friction #1 (verified: f0rge issue create -h lists flag NAMES only, no semantics; every agent trial-and-errored). FIX: every f0rge <cmd> -h gains one line pointing at the flag/verb docs: "docs: spec/schema.md §<cmd>" (spec is the frozen flag truth). Must fit per-cmd -h budget (250B/8 lines): byte-count each after adding. Covers issue/pr/task/label/milestone/ci/wiki/release/ merge/init/skill (issue/ci/wiki handled by the behavior agent; same canonical wording). DONE: every -h points at spec; budgets hold.