Closes M12. The phone can now notice that its server has a newer build and install it, instead of the operator copying an APK to a device by hand. **A PackageInstaller session, not an install intent.** The obvious route — ACTION_VIEW on the APK — is exactly what on-device install heuristics are tuned against, and it is what produced the "bypassing Android security" warning on Minstrel (Scribe note 2437). It also never tells the OS that this app is the legitimate updater of its own package, and it returns nothing: a failed install is indistinguishable from someone dismissing the dialog. The session says who is doing what, and on Android 12+ declares no user action required — which, with UPDATE_PACKAGES_WITHOUT_USER_ACTION, removes the confirmation entirely on the UPDATE path. Only there: Android will not let an app quietly put a NEW package on a device, which is right. It also only applies when the new build carries the same signing key as the installed one, which is why signing had to land first. Two things from that research deliberately NOT done: `setRequestUpdateOwnership` was chased and turned out to be a red herring, and REQUEST_INSTALL_PACKAGES is not the differentiator either — Mihon declares it too. The mechanism was the whole difference. **The outcome comes back.** `commit` takes an IntentSender and the result lands at `UpdateReceiver`, so a failure can be shown rather than guessed at, and STATUS_PENDING_USER_ACTION is handled — that is the ordinary path below API 31 and still possible above it, since the OS is entitled to ask anyway. Someone declining is reported as no error at all: calling a deliberate choice a failure is how an app sounds broken when it is not. **The network work stays in Rust.** Two FFI additions — `clientUpdate` and `downloadClientUpdate` — because the device token lives in the core, and pulling it into Kotlin to make an HTTP call would spread the one secret this app holds across two languages for nothing. The core also owns the comparison, so the rule "version CODE decides, never the name" lives in the layer that has to get it right for every surface. The download is streamed to disk, not buffered: 55 MiB in memory on a phone is how an update gets killed halfway through. It lands in `update.apk.part` and is renamed only once size and sha256 both match, so an interrupted download can never be mistaken for a finished one. The digest is not a trust anchor — the signature is, and Android checks it — but it catches a truncated transfer before the installer is bothered with it. The advertised path is joined to the base URL this device is LINKED to rather than followed as given, so a server cannot point the download at a host nobody agreed to. **Updates are linked-only, and it says so.** An unlinked install has no update path, so it gets one sentence explaining where updates come from rather than a Check button that silently finds nothing — the same lesson as the desktop's unlink copy (issue 2110). And the "install unknown apps" grant is asked for BEFORE downloading, so nobody spends 55 MiB to be told no. Every Android API here was read out of `android-36/android.jar` with javap first, and the two new FFI methods out of freshly generated bindings, rather than recalled: `suspend fun clientUpdate(installedVersionCode: Long): ClientUpdate?` and `downloadClientUpdate(destPath: String)`. Also fixes `check-symbols.py`, which reported four false positives on `UpdateOutcome.Result` — its object-member index collected functions and properties but not nested TYPES, and a data class inside an object is an ordinary member.
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_URLis required.THOUGHTSYNC_SECRET_KEYis optional; if unset, a signing key is generated and persisted in the database (sessions survive restarts). - Uploaded images live under the
thoughtsync-datavolume at/var/thoughtsync. - The app waits for the database and runs migrations (
alembic upgrade head) automatically on start. - Image tags:
:latest(stable, built frommain) ·:dev(latestdevbuild) ·:<git-sha>(immutable, for pinning / rollback). - 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) — plainhttp://<host>:5000won'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_URLis 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).