feat: phase 0 foundation — monorepo scaffold, backend, frontend, CI, docker

Establishes the skeleton every later phase builds on: Go+Gin API with
zap logging, /api/healthz, SQLite+goose runner; Vite+React18+TS strict+
Tailwind v4 frontend with bento-mono theme tokens; openapi.yaml driving
a generated TS client; oxlint with vendored anti-slop rules; GitHub CI;
multi-stage Dockerfile -> 33.6MB distroless image; docker compose up
serves the blank board.


Generated with [Devin](https://devin.ai)

Authored By: TDvorak <[email protected]>
Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

packages/api-client/src/index.ts

@@ -0,0 +1,11 @@
+// Generated-client entrypoint. Types come from src/schema.d.ts, produced by
+// `npm run generate` from ../../openapi.yaml — the API contract.
+import createFetchClient from "openapi-fetch";
+import type { paths } from "./schema.d.ts";
+
+export type { paths, components } from "./schema.d.ts";
+
+/** API client bound to the OpenAPI contract. Same-origin by default. */
+export function createClient(baseUrl = "") {
+	return createFetchClient<paths>({ baseUrl });
+}