SD-313

[signal-protocol] Signal — compressed governance notation. PoC compresses ~489 lines to ~108 (4.5:1 ratio). NOT a DSL, NOT a language, NOT a prompt engineering technique — no parser, no build step. It compresses process discipline, not prompt wording. Operator names things in Signal; agents must be able to read it. PoC: docs/weaver/signal-protocol-poc.md.

**DRAFT**

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