Add fractal — recursive project management plugin

[rmolines]

Summary

Adds fractal to the Project & Product Management section.

What it does: Recursive project management for Claude Code. One primitive that decomposes any goal into verifiable predicates, works on the riskiest unknown first. The filesystem is the state — no database, no JSON.

Key features:

• /fractal:run — idempotent state machine, call repeatedly to advance the tree
• /fractal:init — bootstrap any goal into a predicate tree
• /fractal:patch — fast path for trivial leaf predicates
• Full sprint cycle: planning → delivery → review → ship
• Dry run mode — builds the full decomposition tree without executing
• Incremental decomposition with re-evaluation at each node

Repo: https://github.com/rmolines/fractal