Update monthly changelog

Author: actions-user

changelogs/2025-10.md

@@ -1,16 +1,16 @@
 # Changelog 2025-10
 
-October 2025 – Key Changes
-- SPICE enablement across the stack – Core integration (tscircuit/core #1427 #1441), circuit-json-to-spice auto .tran & switch support (#13 #11) and Spicey transient comparison (#4 #6) introduce first-class analog simulation.
-- Voltage probing & timing – New simulation_voltage_probe element (circuit-json #306) + voltage-probe component (props #432 #439) and duration/time-per-step parameters (circuit-json #305, props #437) let you chart node voltages.
-- Multi-layer autorouter – 4-layer routing (autorouter #276, core #1443) with boundary-aware pathing & caching (autorouter #265 #268 #279, calculate-packing #55) dramatically improves PCB routing.
-- New DRC checks – Via-to-via clearance errors (core #1459), trace-out-of-board detection (checks #79, core #1436) and component-overlap check (core #1478).
-- PCB fabrication notes – Note/rect/path/dimension/courtyard primitives added to schema & Core (circuit-json #309-#313, core #1491-#1499) with matching prop definitions (props #441 #446).
-- Board & hole upgrades – Board anchor/alignment (core #1438), optional title/thickness/colour (props #435 #440, core #1477) and pill-shaped holes (circuit-json #310, core #1484).
-- One-command KiCad export – CLI support (cli #431) plus circuit-json-to-kicad reaching schematic+PCB parity (#1-#18).
-- 3D pipeline refresh – Poppygl replaces simple-3d for PNG snapshots (cli #435 #442, stepts #9); 3D-viewer gains environment maps, FR4 material & LED colours (3d-viewer #509-#520).
-- GLTF / STEP exporters – Correct bottom-mount placement & board geometry (circuit-json-to-gltf #44 #40) and customizable background/grid (poppygl #5 #7 #9).
-- circuit-to-svg – Simulation graph SVGs (circuit-to-svg #337) and 4-layer PCB examples (#365) with improved styling (#352).
-- Math utils – Polygon overlap / containment helpers & universal rect inputs (math-utils #23 #24).
-- Website – STEP file downloads (tscircuit.com #1770), public org pages (-#1774), user settings page (-#1771) and a cleaner editor UI (-#1744).
-- Misc – Outline-aware packing examples (calculate-packing #56), new maintainer MustafaMulla29 (contribution-tracker #229).
+- SPICE everywhere – core integrates Spicey (#1427 #1441), adds voltage-probe & switch support (#1496 #1446), automatic .tran command (#cj-to-spice #13) and passes new RC/boost tests (#1444 #1445).
+- New simulation building blocks – analog-simulation element, timing/duration props & voltage-probe component land in circuit-json / props (#428 #429 #437 #306 #432 #439).
+- Autorouting leveled-up – full 4-layer support (#1443 autorouter #276) plus big speed win from solver caching (#279) and better outline / via-clearance handling (#268 #265 #1459).
+- Fabrication notes & dimensions – PCB note/rect/path/line/courtyard and pill-hole primitives added across schema, props & core (#311 #313 #441 #446 #1483 #1491 #1493).
+- Board quality of life – boardAnchorPosition/alignment (#1438), board title & color/thickness props (#1477 #427 #440), anchor-pack exclusion for fixed parts (#1497).
+- KiCad export becomes first-class – CLI gains “tscircuit build --kicad” (#431); circuit-json-to-kicad adds full PCB/SCH export, centering, pin fixes & project file (#1 #7 #11 #13 #16); kicadts handles multi-sheet (#8).
+- DRC & checks – new out-of-outline, disconnected-trace and different-net-via errors emitted (#79 #84 core #1436 #1459).
+- 3D & STEP visuals – poppygl renderer adopted (cli #435, step.ts #9), environment-map & FR4 material tweaks (#509 #511), LED colors and board-crop fixes (#520 #519); site can now download STEP files (#tscircuit.com #1770).
+- GLTF pipeline – proper bottom-component placement & JSCAD board geometry (#40 #44), GLB color fix & footprint-string models (#29 #33 #25 #31).
+- SVG output – solder-mask layers, multi-layer trace snapshots, combined schematic+sim graphs, improved pinout scaling (#360 #364 #353 #340 #345 #343 #363).
+- Autorouter & packing dev-tools – outline-aware packing solvers, caching stats, new debugger pages & fixtures (#calculate-packing #55 #56 autorouter #265 #274).
+- Math / geometry utils – universal-rect input support and polygon overlap helpers (#math-utils #24 #23).
+- Website UX – public org pages without login, new user settings page, cleaner editor & responsive layouts (#1774 #1771 #1744 #1747).
+- Misc – FR4/stencil viewer layer selector (#pcb-viewer #397), voltage-probe optional naming (#props #439), extrude winding fix in jscad-electronics (#121).