test(miner-ui): bring the miner-ui under a real coverage gate

apps/gittensory-miner-ui/README.md

@@ -40,3 +40,11 @@ the repo root is a ready-to-adapt persistent unit for this — a companion to
 `gittensory-miner.service.example` (the loop daemon), not a replacement for it. Its header comment
 carries the full install steps. Like the loop daemon, this is a `Type=simple` service, not a `.timer`
 job — the dashboard is a long-running HTTP server, not a periodic batch task.
+
+## Test coverage
+
+`npm test` runs with `--coverage` enabled (v8 provider) and enforces `vitest.config.ts`'s `coverage.thresholds`
+— a real measured baseline (#4865), not an aspirational target, so CI fails on a genuine regression (e.g. a
+large new feature landing with no tests) rather than staying silently unmeasured the way `apps/**` is by
+default at the repo root. `apps/gittensory-miner-extension` is not yet under this gate — its own test
+instrumentation needs to exist first (see #4865's own scope note).

apps/gittensory-miner-ui/package.json

@@ -11,7 +11,7 @@
     "preview": "vite preview",
     "typecheck": "tsc --noEmit",
     "lint": "eslint .",
-    "test": "vitest run",
+    "test": "vitest run --coverage",
     "format": "prettier --write ."
   },
   "dependencies": {

apps/gittensory-miner-ui/vitest.config.ts

@@ -8,5 +8,22 @@ export default defineConfig({
     environment: "jsdom",
     globals: true,
     include: ["src/**/*.test.{ts,tsx}"],
+    coverage: {
+      provider: "v8",
+      include: ["src/**/*.{ts,tsx}", "vite-*.ts"],
+      exclude: ["src/routeTree.gen.ts", "src/main.tsx"],
+      reporter: ["text", "lcov"],
+      // A real baseline (#4865), not an aspirational target: measured at ~87.65/87.17/78.9/88.79 the day this
+      // was wired up, with a few points of buffer below that so routine formatting/refactor churn doesn't
+      // false-fail. This is a floor meant to catch a genuine regression (a big untested addition), not a
+      // ratchet — raise it incrementally as more of the pre-existing gaps (the three sibling API plugins'
+      // own middleware-wiring layer, __root.tsx's nav shell) get covered over time, per-PR, not in one sweep.
+      thresholds: {
+        statements: 85,
+        branches: 85,
+        functions: 75,
+        lines: 85,
+      },
+    },
   },
 });