Implement Nexus card ownership, private draws and full card reference

docs/COMPONENT_INVENTORY.md

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 # Component inventory and verification ledger
 
+**Nexus update, 10 September 2026:** all twelve physical Nexus identities and all thirty-six effect panels are verified against the original printed components. The separate inventory preserves one card per faction, independent of the selected roster; held cards remain private. The internal rules gallery and owner panel provide complete original-language effect text, existing bundled faction artwork and enlarged inspection. Common draws, replacement, preselected own-faction redraw, alliance forfeiture and saved phase progress are integrated. Individual effects and complete module games remain unfinished and gated. See [NEXUS_CARD_RULES.md](NEXUS_CARD_RULES.md) and [NEXUS_CARD_RUNTIME.md](NEXUS_CARD_RUNTIME.md) for current verification and limits.
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 **Homeworld update, 9 September 2026:** all 13 cards and 26 physical faces are verified, including native population/battle values and occupied income symbols. The internal gallery supplies both faces, complete original gameplay prose, enlarged inspection and thirteen original bundled illustrations. Separate typed custody and population helpers are tested; actual Homeworld gameplay, occupation and effect integration remain unfinished and gated. See [HOMEWORLD_IMPLEMENTATION.md](HOMEWORLD_IMPLEMENTATION.md) and [HOMEWORLD_COMPONENT_AUDIT.md](HOMEWORLD_COMPONENT_AUDIT.md). Earlier missing-Homeworld statements below are historical.
 
 **Auditor update, 7 September 2026:** the separate strength-2 Advanced CHOAM disc and matching traitor are now represented, with one original portrait alongside Duke Prad Vidal in the special registry. Ordinary leader inventory remains 60. Root inspected Auditor at normal and enlarged sizes on desktop and phone; its inspector supplies complete original gameplay prose. Private audited-card faces, payment controls, setup identity, capture/foreign-ghola exclusions and first native revival have focused tests. Repeat/sixth-disc revival cycles and full module combinations remain unresolved. See [CHOAM_AUDITOR.md](CHOAM_AUDITOR.md); earlier missing-Auditor artwork/runtime statements below are historical.