Capture the working test schematics produced while iterating on the
boost-converter integration: firstpcb_test through firstpcb_test5 plus
firstpcb_a3 (A3 sheet variant) and firstpcb_nolib (stand-alone copy
with no external lib references). Includes ERC reports for the first
three test variants.
Confidence: medium
Scope-risk: narrow
Directive: These are exploration artifacts, not the production design - do not edit; treat as historical references
