Network cabinet fan controller

@@ -0,0 +1,23 @@+# Step 13: Placement++place the parts for routability, current and heat; the binary packs, checks courtyards and lands moves; reserve visible space for connector labels and the two-sided service silkscreen; the switch-node check refuses switch copper under another part or a switch loop longer than the spec allows, and sends the AI back here++## Visits++- 2026-10-23T18:05:06Z+- 2026-10-24T16:54:58Z++## What the binary checked++### place-land++- **accepted**: 57+- **boardSha256**: dcc6fad455a44aaf6a52e267782755cb2d6e50b06dd3d2b0a617c820d63a3b22+- **excused**: rule only between spec.fixedRefs footprints, with KiCad's placement DRC clean and aiflow's exact courtyard check clear; a fixedRefs footprint may lack a courtyard only when it has no pads+- **mode**: verified-existing+- **ok**: True+- **parts**: 57+- **pass**: True+- **report**: /home/adom/project/fan-controller/revisions/mta156/aiflow/placement-verify.json+- **revision**: 6143ccc9615a728de18b297b011716d1e605f8cbd25ea92d8035bf80f4013b79+- **specSha256**: f6580427681f1758bbf8ca0e26770bdb78df4a18782985f0fe6ce093ee7bf069