Prototype Planetologist movement and Special-card battles

Connect capped extra range, two-origin gathering, Fremen cancellation and
saved replacement choices. Add human controls and actual first-choice AI
paths for all four profiles. Admit the exact nine base green Specials in
the actual skilled leader's weapon slot for +2 on survival, with mandatory
physical discard and no native utility effect. Reject stale dead-disc plans.

Independent movement/battle review closed after the saved-dead-disc fix.
84 focused tests passed. Two four-profile Basic/Advanced samples completed
(194/186 accepted actions, six JSON restorations each, zero rejected actions).
Basic used both movement branches; Advanced used added range. Browser genuine
setup/gather/refresh and a separate targeted Special/traitor-loss fixture passed.

Required verification: types, lint, 4435 offline tests, build and 43 HTTP tests
passed. First attempt stopped at missing explicit test promise markers;
corrected before the successful broad run. Final check/build/HTTP durations:
144157/6638/25048 ms. Source fingerprint (1260 files):
bb7be69cf3e925bf7338ea444f77279ed7b37faadc3c44ed7db01b941f27b861
Private report: checkpoints/20260913-planetologist/checks-final/report.json.

Preserved all 325 opening games and all original application/seat/recovery
records; 359 rooms after 34 new QA/HTTP rooms. SQLite quick_check ok and zero
foreign-key violations. Healthy existing server reused; no reset/restart.

Boundaries: eight other Leader Skills, enemy-only mixed BG gather response,
expansion roster/green-card/optional-module combinations remain unfinished.
Winning traitor caller discard remains a documented card-specific inference.
No mode or publication gates opened.

Efficiency measure: aggregate goal counter 67321978 -> 68710948 (1388970),
including context and coordination; not billing tokens or a savings claim.
One skill's three connected effects, selective implementation/research/review,
one interrupted lint attempt followed by the required complete verification.

docs/RULE_DECISIONS.md

@@ -16,7 +16,7 @@ Updated 13 September 2026. This is the authoritative navigation index for existi
 | Expansion Nexus families | Source audit coverage does not imply every panel is playable; consult later runtime records in the status log. | [Ixian Cunning](NEXUS_IXIAN_CUNNING_RULES.md), [Ixian replacement](NEXUS_IXIAN_REPLACEMENT_RULES.md), [Tleilaxu](NEXUS_TLEILAXU_RULES.md), [CHOAM](NEXUS_CHOAM_RULES.md), [Richese](NEXUS_RICHESE_RULES.md), [Ecaz](NEXUS_ECAZ_RULES.md), [Moritani](NEXUS_MORITANI_RULES.md) |
 | CHOAM Secret Ally | Absent-faction Collection trade spends one actual Worthless card and the Nexus for two bank spice. It is separate from native Cunning and Auditor; the battle inspection alternative remains missing. | [Prototype contract](NEXUS_CHOAM_SECRET_ALLY.md) |
 | Sapho movement | At a clean boundary, first reorders only remaining unstarted turns; completed turns stay completed. Advanced Guild must have finished or be absent. Last retains existing protection after Guild. | [Existing source contract](JUICE_OF_SAPHO_SOURCE_UPDATE.md#movement-firstlast), [runtime](JUICE_OF_SAPHO_RUNTIME.md) |
-| Leader Skills | Fourteen physical cards, variant setup order, public/hidden assignment, death return, own-leader revival and captured lower-band effects are sourced. Five battle disciplines and common lifecycle are prototyped; nine effects and combinations remain missing. Known skilled capture identifies the leader through its unique public card. | [Source contract](LEADER_SKILLS_RULES.md), [capture inference](LEADER_SKILLS_CAPTURE.md), [runtime](LEADER_SKILLS_RUNTIME.md) |
+| Leader Skills | Fourteen physical cards, variant setup order, public/hidden assignment, death return, own-leader revival and captured lower-band effects are sourced. Five battle disciplines, Planetologist movement/Special substitution and common lifecycle are prototyped; eight skills and combinations remain missing. Known skilled capture identifies the leader through its unique public card. | [Source contract](LEADER_SKILLS_RULES.md), [capture inference](LEADER_SKILLS_CAPTURE.md), [runtime](LEADER_SKILLS_RUNTIME.md), [Planetologist](PLANETOLOGIST_RULES.md) |
 | Discoveries | Preserve seven sourced Spice Cards and eight physical tokens, private faction peeks and Collection choices. Revealed locations are separate territories; only Jacurutu counts toward stronghold victory. Next-turn free entry, sole-occupant Cistern income and later-turn Ornithopter spending are prototyped; Jacurutu income, Testing Station and Shrine have bounded prototypes; Orgiz and contested/mixed cases remain pending. | [Component authority](DISCOVERY_COMPONENTS.md), [prototype boundary](DISCOVERY_PROTOTYPE.md) |
 | Guild Secret Ally | One explicit Guild-priced ordinary shipment; borrowed prices/routes preserve native identity. Free Fremen reinforcement remains a separate choice. | [Route contract](NEXUS_GUILD_SECRET_ALLY_RULES.md), [verified runtime](NEXUS_GUILD_SECRET_ALLY_RUNTIME.md) |
 | Homeworld custody and mobility | Physical home/visitor groups, population thresholds, tariffs and transport permissions retain distinct sources; Homeworld immunity is not universal immunity. | [Homeworld rules](HOMEWORLD_RULES.md), [benefits](HOMEWORLD_BENEFITS_RULES.md), [mobility](HOMEWORLD_MOBILITY_RULES.md), [invasion](HOMEWORLD_INVASION_RULES.md), [Guild transport](GUILD_HOMEWORLD_TRANSPORT_RULES.md) |