Ryan Malloy c1ddf0c5f7 Fix schematic validation to scan subdirectories for hierarchical sheets
Hierarchical KiCad projects store sub-sheets in subdirectories (e.g.
sheets/). The flat os.listdir scan missed all of them. Use recursive
glob to find .kicad_sch files at any depth under the project directory.

Reported by ESP32-P4 project (agent thread message 025) — their 8
malformed property-private entries were all in sheets/ subdirectory.
2026-03-05 11:27:42 -07:00
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