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1. psychohistory-sim psychohistory-sim Public

   Psychohistory: a fiscal-policy impact terminal pairing PolicyEngine microsimulation with regional input-output models. Inspired by Asimov's Foundation.

   Python

2. chip8-emulator chip8-emulator Public

   A CHIP-8 virtual machine: 4KB memory, 16 registers, a 64x32 monochrome framebuffer, the built-in font set, and the core opcode set (jumps, subroutines, ALU ops, sprite drawing with collision, BCD).…

   Python

3. physics-engine physics-engine Public

   A 2D physics engine using Verlet integration: particles fall under gravity, bounce off the world bounds with configurable restitution and friction, and are connected by distance constraints ('stick…

   Python

4. payment-ledger payment-ledger Public

   An immutable double-entry accounting ledger. Every transaction is a set of debit/credit lines that must net to zero, balances update atomically, and the journal is append-only and SHA-256 hash-chai…

   Python

5. portfolio-optimizer portfolio-optimizer Public

   Markowitz mean-variance portfolio optimization in pure Python. Estimates the covariance matrix from asset return series, then finds the long-only maximum-Sharpe portfolio and traces the efficient f…

   Python

6. meeting-notes-app meeting-notes-app Public

   An AI meeting notepad for macOS: no bot joins your meeting, the app captures your microphone and system audio directly, transcribes both live, and then uses Claude to merge your rough typed notes w…

   TypeScript