#160 · SimpleX !fab completion: list / info / render / analyze / request / tasks

Context

SimpleX !fab does search + add only. Signal's fabrication suite also lists, shows info, renders STL previews, analyzes .3mf files, and tracks fabrication requests.

Acceptance criteria

• [ ] !fab list, !fab info <slug>, !fab render <slug>, !fab analyze (attached .3mf), !fab request <type> <title>, !fab tasks all work with Signal-equivalent output.
• [ ] Render/analyze gated on the tooling guard; clean fallback when unavailable.

Technical hints

• Signal reference: commands/utility/fabrication.command.ts.
• SimpleX target: extend commands/utility/fab.command.ts (already has search/add + a per-contact search cache).

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