bvandeusenandClaude Opus 5 3d490bb6f3 HSL lightness is not luminance — the dark floor was too low
The unit test I added with the generated fills failed on its first run, on
exactly the claim it was written to check, so it earned its keep immediately.

The floor was 0.090 — `neutral-900`'s own HSL lightness — reasoning that a
ramp starting at the card surface and climbing could not end up below it.
That confuses HSL lightness with luminance. At one fixed lightness the eye
sees very different brightnesses by hue, because green carries 71% of the
luminance formula and blue only 7%: at L=0.090 a yellow measures 0.0118 and a
blue 0.0061. Every blue-ish untagged note was 1.41x DARKER than the card it
was supposed to match, which on the board reads as a hole rather than as
variety — the opposite of what the whole change is for.

Solved rather than nudged: 0.113 is the lowest floor at which EVERY hue
clears the card surface. The range now measures 1.11-1.71 against the board
against the old 1.06-1.54, so the floor is back where the shipped ramp had it
and the ceiling is higher. Body text 7.8 against the 4.5 it needs, meta 4.6
against 3.0. 338 distinct dark fills.

Two things about the test are worth keeping.

It asserts on LUMINANCE rather than on the lightness that was put in — a test
of the input would have agreed with the bug and passed.

And it now sweeps 40,000 ids rather than 500. The worst case is a HUE, not an
id, and 500 ids reach only 459 of the 2160 hue/level combinations — it caught
this one by luck. 40,000 covers all 2160.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-26 17:17:32 -04:00

ThoughtSync

Self-hosted personal thought-capture web app in the FabledSword family — a Google-Keep-style masonry post-it board for capturing disparate thoughts in under a second, designed to grow into a lightweight second brain (labels, search, [[wiki-links]], graph).

  • Stack: Quart (async Python) + Vue 3 + PostgreSQL, Docker, Fabled-Git CI.
  • Auth: native email + password (signed-cookie sessions). Multi-user with the family owner + direct-share + group-share ACL.
  • Web-first. An Android companion is a later, conditional milestone.

Layout

src/thoughtsync/     Quart app (app factory, auth, models, ACL, config, db)
alembic/             async migrations (schema built via `alembic upgrade head`)
tests/               DB-free unit tests (pytest)
frontend/            Vue 3 + Vite + TypeScript + Tailwind SPA
Dockerfile           2-stage build (Vue -> python:3.12-slim runtime)
docker-compose.yml   local app + Postgres stack

Development

Backend (needs a Postgres reachable at THOUGHTSYNC_DATABASE_URL):

pip install -e ".[dev]"
alembic upgrade head
hypercorn 'thoughtsync.app:create_app()' --bind 0.0.0.0:5000

Frontend (proxies /api to :5000):

cd frontend
npm install
npm run dev        # http://localhost:5173

Or run it in Docker. Hot-reload dev stack (edit code, changes reload live) — Postgres + backend + Vite dev server, app at http://localhost:5173:

docker compose -f docker-compose.dev.yml up

Or the full production image (SPA baked in) at http://localhost:5000:

docker compose up --build

Deploy (self-host)

A complete two-container stack (app + Postgres) you can copy and run. Save it as docker-compose.yml, change the two CHANGE_ME passwords (they must match), then docker compose up -d:

services:
  db:
    image: postgres:16-alpine
    restart: unless-stopped
    environment:
      POSTGRES_USER: thoughtsync
      POSTGRES_PASSWORD: CHANGE_ME          # change this
      POSTGRES_DB: thoughtsync
    volumes:
      - thoughtsync-db:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U thoughtsync"]
      interval: 5s
      timeout: 5s
      retries: 10

  app:
    image: git.fabledsword.com/bvandeusen/thoughtsync:latest   # :dev for the current dev build
    restart: unless-stopped
    depends_on:
      db:
        condition: service_healthy
    environment:
      THOUGHTSYNC_DATABASE_URL: postgresql+asyncpg://thoughtsync:CHANGE_ME@db:5432/thoughtsync
    volumes:
      - thoughtsync-data:/var/thoughtsync   # uploaded images; omit if you don't use attachments
    ports:
      - "5000:5000"

volumes:
  thoughtsync-db:
  thoughtsync-data:

Then open http://<host>:5000 and register — the first account becomes the admin.

  • Only THOUGHTSYNC_DATABASE_URL is required. THOUGHTSYNC_SECRET_KEY is optional; if unset, a signing key is generated and persisted in the database (sessions survive restarts).
  • Uploaded images live under the thoughtsync-data volume at /var/thoughtsync.
  • The app waits for the database and runs migrations (alembic upgrade head) automatically on start.
  • Image tags: :latest (stable, built from main) · :dev (latest dev build) · :<git-sha> (immutable, for pinning / rollback).
  • Putting it on the public internet: there are four things to do first — close registration, terminate TLS and forward X-Forwarded-Proto, stop publishing the app port, and back up the attachment volume as well as the database. See docs/public-hosting.md, which also lists what the app hardens on its own and what it deliberately doesn't.
  • Install as an app (PWA): ThoughtSync is installable ("Add to Home Screen" / the browser's install button) for an app-like window. Browsers only offer install over a secure context, so put the app behind a reverse proxy terminating HTTPS (or reach it via localhost) — plain http://<host>:5000 won't show the install prompt.

Milestones

  • M0 — Foundation & Identity : Quart+Vue+Postgres skeleton, native auth, sharing-ACL spine, Fabled-Git CI.
  • M1 — Capture Core : note model + masonry board (quick-add, colors, pin, edit-in-place, archive, trash+restore).
  • M1.5 — Roles & DB-backed Settings : first user is admin, admin Settings UI, DATABASE_URL is the only required env.
  • M2 — Organize: labels/tags, search, checklists, attachments.
  • M3 — Second-brain seeds: [[wiki-links]], backlinks, graph view, reminders.
  • M4 — Launch hardening: responsive/PWA, settings UI, polish.

Work happens on dev; main is protected (PR-only).

S
Description
Self-hosted personal thought-capture web app (FabledSword family) — a Google-Keep-style masonry post-it board for fast idea capture, growing into a lightweight second brain. Quart + Vue 3 + PostgreSQL.
Readme
3.2 MiB
2026-08-23 16:50:53 -04:00
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