fix(entergame): recreate character list after relog

[blakinio]

Purpose

Repair the confirmed character-list lifecycle failure where closing the list after logout leaves no window for the next showAgain() callback and the resource resolver can turn relative characterlist into the invalid root path /characterlist.otui.

Task

• Task: OTC-20260726-characterlist-recreation
• Task record: docs/agents/tasks/active/OTC-20260726-characterlist-recreation.md
• Clean base: ce4329ee13b39576915240605c2fe6657096c517
• Backup refs: backup/OTC-20260726-characterlist-recreation-pre-restack and backup/OTC-20260726-characterlist-recreation-clean-c01a7daa

Scope

• anchor every relative legacy/Oteryn layout under /client_entergame/, even when guessFilePath returns a root-level path
• preserve explicit absolute layouts and reject traversal
• preserve the last selected layout
• recreate destroyed UI from existing G.characters / G.characterAccount
• fail safely back to EnterGame when layout creation fails
• focused core and full adapter lifecycle tests

Verified diff

Exactly eight files: lifecycle helper/adapter, one manifest line, two Lua tests, two CTest entries, changelog and task record. Historical upstream stack was removed; branch is current with main.

Safety

• no authentication, credential, protocol, server or asset changes
• existing CharacterList remains the only population/login controller
• PR feat(ui): prototype Oteryn login shell #23 presentation behavior will be reconciled onto this manifest load-order fix

Validation

Exact-head Lua Syntax, focused CTest, five Windows variants and CI / Required must pass. Auto-merge remains branch-protection gated.