Lucas WintherandClaude Opus 5
a039176aa3
TODO.md becomes a TODO again: only work that is actually queued. Five of
its seven sections were finished work, and their reasoning has permanent
homes — the rules moved to AGENTS.md (the baked rates seed a new dataset
only, never a fallback), the rest is in the commit messages and the
specs. 215 lines to 131.
The four corrections, all of them things a reader would have believed:
- README said the install prompt could not work because the manifest
"only ships an SVG icon". It has shipped 192x192 and 512x512 PNGs since
f50c65b. Now stated as unverified rather than incomplete, which is what
it actually is.
- TODO said no browser had seen the two rule-editing surfaces, while its
own section 5 listed both as seen and confirmed.
- TODO said "merged to main" when the last three commits were on a
branch.
- scripts/screenshot.ts explained its own existence by saying
ARCHITECTURE.md and TODO.md claim no browser can run here. Both now say
the opposite — partly because of that script.
ARCHITECTURE.md's gotchas section now says AGENTS.md holds the
enforceable form of those rules and this holds the mechanism, so a reader
hitting the overlap knows which is canonical.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
Budget 2.0
A personal budgeting PWA. Envelope-style monthly budgets with rollover, split purchases, finance plans, multi-currency, and JSON/ODS export. All data lives in your browser — there is no server and no account.
Development
bun install
bun run dev # dev server with hot reload, on :3000
bun test # run the test suite
bun run build # production build into dist/
Self-hosting with Docker
docker build -t budget2 .
docker run --rm -p 3000:3000 budget2
To serve from a subpath, build and run with BUN_PUBLIC_BASE_PATH:
docker build -t budget2 --build-arg BUN_PUBLIC_BASE_PATH=/budget/ .
docker run --rm -p 3000:3000 -e BUN_PUBLIC_BASE_PATH=/budget/ budget2
GitHub Pages
Pushing to main builds and deploys to Pages automatically, using
/<repository-name>/ as the base path. Enable Pages with "GitHub Actions" as
the source in the repository settings.
Your data
Everything is stored in this browser's IndexedDB. Export regularly from Settings → Your data: the JSON export is both your backup and how you move your budget to another device.
Both destructive actions there — Import, and "Reset everything" — download a backup of your current data before replacing it, and abort if that download fails. Reset puts the app back to a brand-new install: the three starter posts, the DKK/USD/EUR currency table, this month at zero income, no purchases.
Known limitations
- Data is per-browser. There is no account and no sync. If you clear this browser's site data, or move to a different browser or device, your budget is gone unless you exported it first. The JSON export is not just a nice-to-have backup — it is the only way to move a budget between devices.
- Installing and offline use are unverified. The manifest ships the SVG plus 192×192 and 512×512 PNG icons, and the service worker demonstrably installs, activates and precaches every asset — but nobody has yet confirmed that Chrome offers its "Install app" prompt, or loaded the app with the network actually cut. It works as a regular tab regardless.
Documentation
docs/ARCHITECTURE.md— layers, data flow, and why the non-obvious choices are what they are.docs/PRODUCT.md— who this is for and what must never break.AGENTS.md— the rules for changing this codebase, and the test that catches each one when broken.CLAUDE.mdandGEMINI.mdpoint at it.docs/TODO.md— what is still queued.docs/specs/— one design document per piece of work, each recording the alternatives that were rejected.docs/plans/— task-by-task implementation plans.