Schematic review round 2: US resistors, decoupling placement, VERIFY checklist, gitignore - #2

…ate PDF, netlist, SVGs, ERC report

…xport_docs.sh, regenerate docs

…chematic changes

…path

… parts, 4.7k I2C, 0805 0R, Etherkit SMA footprint

- R9 /RST pull-up moved from +5V to CP_VDD (CP2102N DS 2.1, Table 3.10)
- New R29 1k (C21190) between C14 and PB4 to limit DTR-rise injection current (ATtiny3226 DS Table 33-1)
- C24 fitted 22u 1206 (C12891); C22/C23 kept 2x4.7u
- R13 0603 C23179, D4 1N5711W SOD-123 C154843, J5 1x4 pin header C124378
- R27/R28 4.7k C17673; R100/R120/R140 0805 0R C17477; R101/R121/R141 LCSC C17437 (DNP)
- J2-J4 footprint EtherkitKicadLibrary:SMA-ENDLAUNCH
- H1-H4 and solder jumpers excluded from BOM
- Finalized VERIFY notes removed from sheets; VERIFY.md items ticked with KiCad EE notes

…eview, title block, clear finalized VERIFY fields, LPF closed

….3V LP2985 rail; silkscreen pin-name note; VERIFY DS1 supply resolved; regen docs

…D_RES on PA6, PA2 freed; remove R26/FS0/CS2; DNP supplied in kit; VERIFY + regen docs

… Adafruit note

…ared, MPN kept; VERIFY + regen docs

…to GND

…124+JP125, JP144+JP145) with CLKn_BYP lane net, isolating the lane at both ends; regen docs

…3V3_CLK after FB1, caps inline at the U2 supply pins; RF50 netclass (0.31 mm) incl. CLK0-2_BYP lanes; regen docs

…e series R and VDDO cap fit at U2's 0.5 mm-pitch CLK/VDDO pins; regen docs

…-SW4 values SOFT1-SOFT3 (labels drawn on the OLED); regen docs, ERC 0