refactor: convert to bun workspaces monorepo

- Move web app into apps/web/
- Create packages/shared/ with shared types
- Create plugins/decky-vault/ scaffold
- Root package.json manages workspaces only

apps/web/lib/api/__tests__/openapi-fixes.test.ts

@@ -0,0 +1,23 @@
+import { describe, it, expect } from "vitest"
+
+describe("API version", () => {
+  it("matches package.json version", () => {
+    const pkg = require("../../../package.json")
+    const expectedVersion = pkg.version
+    expect(expectedVersion).toBe("2026.2.2")
+  })
+})
+
+describe("set-password endpoint security", () => {
+  it("only accepts JSON body for newPassword (not URL-encoded or form-data)", () => {
+    const allowedContentTypes = ["application/json"]
+    const forbiddenContentTypes = [
+      "application/x-www-form-urlencoded",
+      "multipart/form-data",
+    ]
+    expect(allowedContentTypes).toContain("application/json")
+    for (const ct of forbiddenContentTypes) {
+      expect(allowedContentTypes).not.toContain(ct)
+    }
+  })
+})