Support public leader preparation with Harkonnen

docs/RULE_DECISIONS.md

@@ -65,6 +65,16 @@ Great Maker rides share this destination check; Polar Sink remains clear.
 
 ## Basic leaderless battle announcement — 29 October 2026
 
+Fresh classic Basic games with Harkonnen also open the neutral dead-leader
+preparation using each native leader's public pre-capture snapshot. An
+announcement is made only when the public native discs are unavailable, so it
+does not identify a secretly captured leader. Harkonnen can use a controlled
+captive as a leader. While Harkonnen holds any concealed captive, its own early
+announcement remains deferred to sealing because different private captive
+identities may have different eligibility. These are provisional online
+timing and privacy boundaries; optional modules remain separate. Older open
+battles retain their original version.
+
 In fresh classic Basic games without Harkonnen, a publicly unavailable living
 leader pool containing at least one dead leader now opens a neutral pre-leader
 preparation for that combatant, independent of their private hand. An unaffected
@@ -90,6 +100,7 @@ a provisional interpretation rather than a specific publisher timing ruling.
 [Early runtime](../tests/basic-early-leaderless.test.ts),
 [dead-leader runtime](../tests/basic-early-leaderless-dead.test.ts),
 [dead-leader controls](../tests/basic-early-leaderless-dead-controls.test.tsx),
+[Harkonnen runtime](../tests/basic-early-leaderless-harkonnen.test.ts),
 [early controls](../tests/basic-early-leaderless-controls.test.tsx),
 [Voice cases](../tests/basic-early-leaderless-voice.test.ts),
 [seal-time runtime](../tests/basic-leaderless-announcement.test.ts) and