[codex] Improve client mod coexistence safeguards

[mfoltz]

Summary

This keeps Eclipse friendlier when another client UI mod or runtime loader is present without adopting any peer-mod behavior:

• initialize config before Harmony patch discovery and add a runtime initialize receipt hook for partial/runtime-load paths
• make unload/bootstrap teardown tolerate partially initialized routines and reset transient Core state
• default the Bloodcraft attribute-buffer mutation behind UIOptions.AttributeBuffs=false
• add defensive HUD/ability-slot null and duplicate-component guards during canvas bring-up
• retry the Emberglass registration message after the client transport reports ready
• add generic local mod-pair proof tooling so future compatibility checks can stage, collect, and restore without manually shuffling DLLs

Runtime Evidence

Local proof run eclipse-bloodcrafthub / combined-candidate / 20260517-111812 was marked pass-with-warning after a dedicated harness rerun.

Observed success markers:

• Eclipse and BloodCraftHub loaded together without targeted CanvasService/DOTS/null-reference crash markers
• Emberglass handshake completed
• Eclipse observed Emberglass client ready
• queued Eclipse registration sent after readiness
• Eclipse received configs/progress afterward
• server log showed Bloodcraft registered the Emberglass bridge and received Eclipse registration

The warning is intentionally not fixed here: Bloodcraft still logs an early startup-check warning and NullReferenceException before later initialization. That should be handled in a separate Bloodcraft follow-up.

Validation

• dotnet build Eclipse.csproj --configuration Release --no-restore -p:DeployToClient=false
• C:\Program Files\Git\bin\bash.exe .codex/scripts/version-metadata.sh
• PowerShell parser check over .codex/scripts/*.ps1
• git diff --check / git diff --cached --check

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• Comment "@codex review".

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