Update v0.109.0

Features

//add classChangeCount field to Character model inputs for create and update operations // audit: add detailed status report for deferred backlog items in UI/UX audit // audit: update deferred backlog status audit with code audit findings and closeout fixes // battle: add card-battle schema and the pure turn engine // battle: Assalto — presence, governance and real stakes // battle: asynchronous matches, the defense AI, and the battle page // battle: derive the card pool and add the deck builder // battle: live PvP over Ably — phase 6, plan complete // battle: NPC ambush is a card battle (phase 5, item 1 of 4) // battle: PvE tower (phase 5, item 2 of 4) // battle: raid encounters (phase 5, item 3 of 4) // battle: ranked arena with Elo, settlement and replays // battle: season boss — one shared health bar (phase 5 complete) // battle: update class cards and add simulation tests // pvp: enhance RegionCombatPanel with PvP hub navigation and updated description // pvp: update Combat/Arena tab to link to PvP hub and enhance description // pvp: update hot topics and research log with live PvP hub integration details

Bug Fixes

// battle: close the tower faucet and three settlement regressions