Add FileGram to Factual Memory (Token-level)

[choiszt]

Add FileGram to Factual Memory > Token-level.

FileGram grounds agent memory and personalization in file-system behavioral traces — inferring user preferences from what users do with files (open, edit, organize, delete) rather than from dialogue or self-reports. It proposes a three-part framework:

• FileGramEngine: persona-driven data engine generating 640 multimodal behavioral trajectories capturing fine-grained file-level operations
• FileGramBench: diagnostic benchmark with 4,600+ QA pairs across 4 evaluation tracks
• FileGramOS: bottom-up memory architecture decomposing behavioral signals into procedural, semantic, and episodic channels