Two-Profile Daily-Lock Notepad

Desktop app implemented with Electron + TypeScript + React.

Run

pnpm install
pnpm dev

Build

pnpm build

Test

pnpm test

What is implemented

• Daily profile lock at 00:00 in America/Mexico_City
• Exactly one active profile (p0/p1) per day with HMAC commit integrity in meta.json
• Per-profile encrypted storage in profiles/p0.db.enc / profiles/p1.db.enc using AES-256-GCM + HKDF
• Master key bootstrap via keytar (DailyLockNotepad/master), with local fallback only if keytar is unavailable
• Active-profile-only runtime (inactive profile is not loaded/decrypted or exposed in UI)
• Document editor with autosave (debounce + max interval), snapshots, and session restore
• Deterministic tree parser for indentation + > branch rules with collapsed buckets
• Text/Graph modes, right tree panel, Z-wrap dual projection view, and inversion toggle
• Command palette (Ctrl+P), within-document search only, plaintext export warning
• Midnight rollover behavior requiring restart/relaunch to enforce the new day lock

Main files

• electron/main.ts
• electron/preload.ts
• src/core/appController.ts
• src/core/dailyLock.ts
• src/core/crypto.ts
• src/core/profileRepository.ts
• src/shared/treeParser.ts
• src/shared/autosaveScheduler.ts
• src/renderer/App.tsx
• tests/acceptance.test.ts

Security note

This protects against casual file tampering and accidental profile exposure. A local machine owner can still bypass controls by patching/running modified binaries.