Initial sync: memory, agents, commands, and gitignore

Syncs project memory, custom agents, and commands across machines.
Excludes secrets (settings.json), session state, and runtime files.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

projects/-Users-csader-shaper-slicer/memory/project_shaper_origin_concepts.md

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+---
+name: Shaper Origin cut type semantics
+description: How Shaper Origin interprets SVG fill colors and cut types — critical for correct SVG output
+type: project
+---
+
+Shaper Origin SVG semantics:
+- White fill (#FFFFFF) = inside cut (vector follow along the path — faster, used for boundary/cutout)
+- Gray fill (#808080) = pocket cut (area removal — raster/spiral clearing, used for interior cavities)
+- Black fill (#000000) = outside cut
+- `shaper:cutDepth` attribute sets depth per path
+- BenchPilot mode may cut layers in ANY order (not necessarily top-down), so each layer must only contain material not already removed by other layers
+- Tabs are bridges in the boundary trough that hold the piece in stock — they should NEVER affect interior/model geometry
+
+**Why:** These semantics drive the entire SVG generation logic. Getting fill colors wrong means the machine uses the wrong cut strategy.
+
+**How to apply:** Always verify boundary paths get white fill and interior paths get gray fill. Tabs only subtract from boundary.