From 85ddf36a63f7af9215132c6872999f2d548a1c7f Mon Sep 17 00:00:00 2001
From: gator <gatordevin@gmail.com>
Date: Sun, 16 Aug 2026 15:29:56 +0000
Subject: [PATCH] README: no-op touch (keeps the provenance note at the top)

---
 README.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 6a640cf..ebb02ba 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 <!-- Footprint pad geometry in the catalog is fetched from EasyEDA/LCSC per LCSC code
      (packageDetail.dataStr PAD records, 1 unit = 10 mil = 0.254 mm) — not derived from
-     package names. See the catalog_pads_merge function. -->
+     package names. See the catalog_pads_merge function. Coordinates are mm, origin at
+     the package origin, +Y down (SVG's direction), so they render top-down as-is. -->
 # parts-store
 
 PromptPCB Parts — open curated component store (catalog, PBR 3D viewer, submit-with-LLM)
\ No newline at end of file