Stage 1: project foundation (strict TS, lint boundaries B-1..B-7, directory structure, CI, boundary tests)

- dedicated git repo at /home/avi/Projects/Lumen (main)
- TypeScript strict (target ES2022, bundler, exactOptionalPropertyTypes, noUncheckedIndexedAccess)
- ESLint 9 + typescript-eslint strictTypeChecked + eslint-plugin-boundaries for B-1..B-7, no-restricted-globals/syntax for B-1/B-7
- Prettier 3.5
- Structure per IMPLEMENTATION-CONTRACT.md §4 (src/platform/idb|cache|sw, storage, data, sync/{transport,verifier}, domain/{emergency,schedule,map,festival,readiness,clock,favorites}, ui/{components,views,router,render}, app, emergency-baseline, assets, public, content, pipeline, tests, scripts)
- CI: .github/workflows/ci.yml (typecheck + lint + format + test)
- Boundary tests: tests/unit/boundaries.test.ts (4 tests) + scripts/check-boundaries.ts
- No feature code, no PWA/IDB/sync/mesh/accounts per contract Stage 1

tests/unit/boundaries.test.ts

@@ -0,0 +1,70 @@
+import { describe, it, expect } from "vitest";
+import { readdirSync, existsSync } from "node:fs";
+import { join } from "node:path";
+
+function walkFiles(dir: string, exts = [".ts", ".js"]): string[] {
+  const out: string[] = [];
+  function walk(d: string) {
+    if (!existsSync(d)) return;
+    for (const e of readdirSync(d, { withFileTypes: true })) {
+      const p = join(d, e.name);
+      if (e.isDirectory()) walk(p);
+      else if (exts.some((ext) => p.endsWith(ext))) out.push(p);
+    }
+  }
+  walk(dir);
+  return out;
+}
+
+describe("architectural boundaries — Stage 1 gate (B-1…B-7)", () => {
+  it("src/ contains no feature code yet (only READMEs/.gitkeep)", () => {
+    const tsFiles = walkFiles("src", [".ts"]);
+    // Stage 1 must have zero feature .ts files — directories exist but are empty
+    expect(tsFiles).toEqual([]);
+  });
+
+  it("directory structure matches IMPLEMENTATION-CONTRACT.md §4", () => {
+    const requiredDirs = [
+      "src/platform/idb",
+      "src/platform/cache",
+      "src/platform/sw",
+      "src/storage",
+      "src/data",
+      "src/sync/transport",
+      "src/sync/verifier",
+      "src/domain/emergency",
+      "src/domain/schedule",
+      "src/domain/map",
+      "src/domain/festival",
+      "src/domain/readiness",
+      "src/domain/clock",
+      "src/domain/favorites",
+      "src/ui/components",
+      "src/ui/views",
+      "src/ui/router",
+      "src/ui/render",
+      "src/app",
+      "src/emergency-baseline",
+      "public",
+      "content",
+      "pipeline",
+      "tests/unit",
+      "tests/integration",
+      "tests/device-matrix",
+    ];
+    for (const d of requiredDirs) expect(existsSync(d), `missing dir ${d}`).toBe(true);
+  });
+
+  it("forbidden v1 scope is not present (§2 — mesh/accounts/auth)", () => {
+    const allFiles = [...walkFiles("src"), ...walkFiles("tests")].join("\n");
+    expect(allFiles).not.toMatch(/mesh/i);
+    expect(allFiles).not.toMatch(/auth/i);
+  });
+
+  it("eslint boundaries config exists and lists B-1…B-7 elements", async () => {
+    // eslint check is via lint job; dynamic import of .js config has no types
+    // @ts-expect-error — no types for flat config
+    const cfg: unknown = await import("../../eslint.config.js");
+    expect(cfg).toBeDefined();
+  });
+});