Fix DeMemWM memory dropout and inference stabilization

Optimize DeMemWM dynamic selection defaults

Use multiview dynamic memory online

Select DeMemWM dynamic memory by multiview retrieval

Add DeMemWM multiview selector backends

Make DeMemWM FOV candidates deterministic

Add DeMemWM multiview dynamic policy

Restore revisit local context exclusion

Validate DeMemWM future memory selection

Allow noncausal DeMemWM dynamic events

Allow noncausal DeMemWM revisit selection

Add DeMemWM memory causality config

Read DeMemWM training dynamic stream around revisit

Use wrapped pose deltas for DeMemWM dynamic scoring

Add DeMemWM memory sheet diagnostics

Improve DeMemWM memory selection pipeline

Align DeMemWM latent memory frame offsets

Hardcode FOV sampler constants

Remove unused DeMemWM memory backend option

Fix disabled DeMemWM memory selection slots

Reject unimplemented WorldMem memory backend

Add DeMemWM step 1-4 dataset scaffold