Trace traditional Kasuti embroidery motifs so the design appears
identical on both sides of the fabric. Two side-by-side 20×20 SVG
fabrics (front/back); the active side flips after every stitch, and
only legal unvisited pattern edges from the current vertex are
clickable. Seven Eulerian motifs in the top reel (Square → Temple),
per-side thread colour pickers (default black on front, red on back),
undo / reset, completion detection + canvas-confetti.
Implemented from the idea in admin-data.json; idea removed and
replaced with a note on the slug.
https://claude.ai/code/session_01KNdXjQczMCRGMK7K3Qderw
neighbor-sum-avoidance (T2-T6):
- Start button now reads just "Start" (no mode suffix).
- Available numbers and shuffled preview arrangements render pre-start
so the arena isn't empty while the user is still deciding.
- Mode switch + count slider stay mounted once active; they're just
disabled, so starting no longer causes a layout jump.
- Guided-mode instructions expanded to call out light grey edges, red
violation arcs, and the green valid-neighbor line explicitly.
- Draggable numbers honor isActive for the draggable attribute and
onDragStart, showing opacity-60 + cursor-not-allowed when locked.
computing-pi (new interactive under Miscellany):
- N parallel first-passage simulations: toss until heads > tails,
record the fraction. Average × 4 converges to π.
- Header row: runs slider | live average × 4 | Start/Reset.
- Tile grid uses a mask-gradient marquee so long sequences scroll
their tail while staying readable.
- Click any tile once all runs complete to see the full toss sequence
in a Dialog.
- Safety cap of 1000 tosses per run (first-passage time has infinite
expectation, so without the cap a pathological run could block).
- Registered in interactives.ts + InteractiveRenderer + the parallel
interactive-components map. Filled in three-bank-accounts in the
latter while there, since it was missing.
admin-data.json updated to mark T2-T6 done with remarks, remove the
implemented Computing Pi idea, and add an implementation note.
Astro-based site with 40+ interactive math games, puzzles, and explorations.
Includes admin dashboard, todo system, blog, theme/subcategory navigation,
and embed pages for iframe embedding.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
