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@Therealsboy8 Therealsboy8 released this 06 Sep 20:13
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Inventivus

Engineering mission control — a local-first Windows desktop application for
engineering calculators, machine architectures, native app overlays, version
control, and a built-in AI assistant named Athena.

Inventivus is an Electron app. A React + TypeScript SPA runs in the renderer, a
Fastify + SQLite backend runs as a child process of the Electron main process, and
everything — projects, simulation history, git repos, encrypted credentials — stays
on the user's machine. There is no hosted application server.

Two small cloud pieces exist and are optional: a PartyKit room for real-time
collaboration, and a Cloudflare Worker licence issuer that signs Pro tokens
after a Stripe webhook. Neither holds project data.

Changelog

v1.8.6 — 6 September 2026

Bug fixes

Workspace creation

  • Fixed EasyEDA Pro .eprj (and .eprj2, .elib) files being rejected at workspace creation with "file type not supported". The extension whitelist in server/utils/path-safety.ts had drifted out of sync with the app catalog and was missing every EasyEDA format plus ~40 other catalog extensions (.kicad_pro, .fcstd, .prjpcb, .sldprt, and more). Added a regression test that enumerates the full catalog so this class of bug cannot silently reappear.

Onboarding

  • The AI setup step is now skippable. Users without Ollama or an API key can click "Skip for now" and configure AI later in Settings → AI Provider. The app opens normally in the meantime; document analysis returns a clear "no AI configured" message rather than failing silently.
  • Added a collapsible step-by-step setup guide per provider (install commands, model pull commands, exact URLs, port numbers) shown inline on the AI step.
  • Rewrote the "connection failed" advice into numbered, actionable troubleshooting steps for each provider.

Team / sharing

  • Free-tier project-share cap could be bypassed by using the bulk share path (POST /api/team/share/apply with no project_id). Fixed: bulk path now pre-counts and enforces the cap.
  • Task delete (DELETE /api/team/tasks/:id) had no authorisation — any team member could delete any task. Fixed: only the task creator or a team owner may delete.
  • POST /api/team/events?month= had no format validation; an unvalidated value was used as a SQL LIKE operand, returning all events. Fixed: reject anything not matching YYYY-MM.
  • Optional fields on events and tasks (description, time, assigned_to_member_id) were stored as empty strings instead of NULL, breaking IS NULL queries. Fixed to store NULL.
  • Task unassign was impossible — assigned_to_member_id only accepted a string, not null. Fixed: accepts z.string().nullable().
  • Post display-name fallback used the team name instead of member_id. Fixed.

Payments / Stripe

  • customer.subscription.deleted webhook cleared tier and status but left subscription_id set. Subsequent subscription refresh and portal calls would then attempt to operate on the deleted subscription, returning 402/404 from Stripe. Fixed: null out subscription_id on deletion.
  • Success page copy said "Pro subscription is active" for all plans, including Enterprise customers. Fixed to neutral wording.

Version control

  • Data loss: renaming a workspace then running a scoped commit silently dropped the renamed workspace's manifest entry (matched by name instead of stable repo_path), causing pruneOrphans to delete the file from the repository. Fixed: carry-forward matches by repo_path. Added a regression test.
  • POST /vcs/unstage returned a raw 500 stack trace when called on a file that was never committed to HEAD. Fixed: returns 400 with the git error message.
  • Commit error detection in VersionControl.tsx matched (e as Error).message.includes('409') — any error message containing "409" would show "Nothing to commit" instead of the real error. Fixed to e instanceof ApiError && e.status === 409.
  • stageAll() returned the count of all files with any status rather than files newly staged. Fixed.

Cross-domain checking (core feature)

  • disciplineOf returned 'other' for EDA, firmware, and CAD nodes not yet placed in a container, in three separate locations: drift.ts, consequence.ts, and inference.ts. This silently excluded real cross-discipline connections from drift reports, consequence assessments, and the inference brief sent to the AI model — the most critical output of the system. Fixed in all three with a detector-based fallback.
  • EasyEDA Pro document detector ID was hardcoded to 'easyeda-schematic' instead of 'document-projection', breaking the provenance chain for .eprj files in drift detection. Fixed.
  • Support-part warnings were emitted twice in EasyEDA Pro document detection (once in warnings, once via omitted). Fixed.
  • Detection warnings were concatenated twice into the machine-links response, doubling every warning shown to the user. Fixed.
  • partStates was not passed to computeStaleness in the /inference endpoint (unlike /staleness), so CAD parts from container documents were always shown as current to the AI model regardless of actual state. Fixed.
  • Inference test fixture DRIFT was missing required revised and consequences fields, causing tests to exercise the wrong struct shape. Fixed.

Repository layout

.
├── inventivus/          ← the actual product. Everything below this line is here.
├── memory/PRD.md        Original product requirements and backlog
├── backend/             Emergent scaffold (FastAPI "Hello World" + Mongo) — unused
├── frontend/            Emergent scaffold (CRA + shadcn/ui starter)      — unused
├── tests/               Empty pytest package left by the scaffold
└── test_result.md       Scaffold testing-protocol file

backend/, frontend/, and tests/ are leftovers from the project generator. They
are not wired into the desktop app and can be ignored (or deleted) — the Fastify
backend the app actually runs is inventivus/server/.

Quick start

Requires Node 20+ and Yarn 1.x.

cd inventivus
yarn install
yarn dev

yarn dev runs three things concurrently: the Vite dev server on :5173, a
TypeScript build of the Electron main + preload into dist-electron/, and Electron
itself — which spawns the Fastify backend on a free port.

First launch opens the onboarding wizard. To skip the paywall while developing:

yarn dev:unlocked

Full setup walkthrough, including where each Stripe key goes:
inventivus/SETUP.md.
Deeper reference on architecture and internals:
inventivus/README.md.

Stack

Layer Tech
Shell Electron 43 (contextBridge IPC, no nodeIntegration)
Renderer React 18 · TypeScript · Vite 6 · Tailwind CSS
State Zustand (global) · TanStack Query (server)
Graph / canvas React Flow
Backend Fastify 5, spawned as a child process on launch
Storage SQLite via better-sqlite3 (WAL + FTS5 full-text search)
Version control isomorphic-git — real git repos per project
Collaboration Yjs + PartyKit (y-partykit)
Native interop koffi FFI for Win32 window tracking
AI Ollama · LM Studio · OpenAI-compatible · Anthropic
Payments Stripe Node SDK + Ed25519-signed licence tokens
Packaging electron-builder → Windows NSIS installer

What's in the app

  • Mission — dashboard and telemetry across projects.
  • Calculators — truss FEM, beam, buckling, and co-simulation, with sandboxed
    controller expressions and live charting.
  • Machines — visual architecture layout wired to simulation runs.
  • Integrations — register any executable (CAD tool, simulator, terminal),
    launch it, and park a frameless HUD window in front of it. The HUD is a genuine
    second window owned by the launched app, not a reparented overlay — see
    SETUP.md § "The HUD is not an overlay".
  • Version control — git plus entity-level history, mirrored to a workspace.
  • Athena — full-page chat and a floating dock, SSE-streamed from the local
    backend so API keys never reach the renderer.
  • Projects — CRUD, invites, join flow, status control, GitHub sign-in via
    device flow.
  • Global search — SQLite FTS5 behind a Ctrl/⌘+K
    command palette.

Editions and the free/Pro split

Two builds ship from one codebase with a single branch taken:

  • Standard — free tier with feature gates (calculators, machines, HUD live help)
    and quantity caps (5 projects, 3 integrations).
  • Unlocked — same code, resolveEntitlement short-circuits to Pro.

Version control and collaboration are free on purpose: a lapsed subscription must
never appear to have eaten someone's work. Limits are enforced on creation only,
so a user who drops from Pro keeps everything they already have.

Pro is proved by an Ed25519-signed licence token minted by the issuer worker
after a Stripe webhook — never by a local database column. The app embeds only the
public key, so it can verify a licence but cannot mint one. Enforcement is
server-side: gated routes return 402 regardless of what the UI renders.

Building the installers

cd inventivus
yarn package:standard   # → release/standard/Inventivus-Setup-0.1.0.exe
yarn package:unlocked   # → release/unlocked/
yarn package:both       # build once, package twice
yarn package:dir        # unpacked build, faster for testing

Scripts reference

yarn dev                # Vite + Electron + live backend
yarn dev:unlocked       # same, with Pro entitlements
yarn build              # renderer + electron main + server
yarn lint               # tsc --noEmit && eslint
yarn start:server       # backend only, for debugging

yarn verify:editions    # assert standard/unlocked packages differ correctly
yarn verify:persistence # assert userData survives reinstall
yarn verify:webhooks    # sign synthetic Stripe events → SQLite
yarn verify:pathb       # polling-based subscription refresh
yarn verify:ai          # AI provider proxy round-trip

Unit tests are colocated as *.test.ts next to their subjects and run with Vitest
(vitest.config.ts).

Where data lives

Path Contents
<userData>/inventivus.db SQLite database (WAL)
<userData>/config.enc Stripe + AI credentials, AES-256-GCM
<userData>/.inventivus.key 32-byte key generated on first launch, 0600

<userData> is %APPDATA%/Inventivus/ on Windows,
~/Library/Application Support/Inventivus/ on macOS,
~/.config/Inventivus/ on Linux.

Further reading

Document Covers
inventivus/SETUP.md First-time setup, keys, HUD, licensing, pitfalls
inventivus/README.md Architecture and module-level reference
inventivus/issuer/README.md Deploying the licence issuer (~15 min)
memory/PRD.md Original requirements and backlog
FILE_OPERATIONS_FIX.md File open/save handling notes
VERIFICATION_CHECKLIST.md Manual pre-release checklist

License

Proprietary. © Inventivus. All rights reserved.

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