Format spec

The pack format specification (v1.0) will be published here under Apache-2.0 when it freezes, together with the reference reader and the importers for every supported source.

The design goals it encodes:

• One coordinate space: every mention entity-linked once, at build time.
• Lossless richness: every upstream field preserved as typed fibers; nothing flattened away.
• Zero-copy reads: memory-mapped, walk-on-demand; no load step, no server.
• Provenance everywhere: every edge knows where it came from.

The spec deliberately freezes after the recall engine's unification work proves the format complete against real question loads. A standard should be frozen by evidence, not by optimism.