decisions: Orgchain v1.6, shared mining, gas on every act, sends across holdings

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01H4upF5LVwmPDDqrhdUfnXh

docs/lineage.md

@@ -25,9 +25,10 @@ app ([`lineage/orgchain`](https://teahub.xyz/lineage/orgchain)). Found a holding
 belts, record decisions, send test BTC, graduate and close. Each act is a `lineage/v0` inscription whose parent is the
 node that authorizes it, on a private toy chain in the browser with pretend money. Time is a tempo (each act its own
 beat, or acts cued and landed together every 10, 30 or 60 s, or by hand), and a slider replays any holding beat by
-beat. Each beat pays its 50 test BTC reward to the holding being worked in, at its SegWit address, and any node can
-send test BTC to another in its holding, signed by its BIP-84 key; a graduation takes each re-keyed node's money along.
-Every
+beat. Holdings mine each beat's 50 test BTC, split by a hashrate dial on each (equal by default), or, under *Last act*,
+all to the holding that acts. Any node can send test BTC to any other, across holdings too, signed by its BIP-84 key,
+and every act pays its own gas from the actor's keys, topped up from its money, so an unfunded node can't act; a
+graduation takes each re-keyed node's money along. Every
 node holds its inscription at its Taproot address (BIP-86 at its account: a lab root per holding, BIP-85 org seeds,
 the org as account 0 and seats as accounts 1..n), keeps its money at its SegWit address, lists its tapkey (the npub as a Taproot address)
 and its npub beside it, shows its leaves as [the key tree](https://lineage.yolopreneur.lol/) derives them (ssh, git,