Dex adds persistent task memory

Durable task state is the unsexy part of agent tooling, and Dex is betting that persistence beats bigger context windows for real work.

• –Tasks live in `.dex/` files, so sessions can resume with context preserved in git.
• –The hierarchy and dependencies are tuned for multi-step work, not just lightweight to-do lists.
• –GitHub sync turns agent planning into a shared team artifact instead of disposable scratchpad state.
• –This is most valuable for work that spans days or multiple agents; for quick one-offs, the overhead is probably unnecessary.