Make dev mode one command and add VS Code config

npm run dev now runs scripts/dev-env.ts first, which creates .dev/site.env with
a known dev password and a random session secret, so a fresh clone serves a
working admin without anyone hand-building a hash. Adds .vscode launch
configurations and tasks for the dev server, one test file, and check-site, and
brings scripts/ under typecheck, which it had been missing.

.vscode/launch.json

@@ -0,0 +1,58 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Dev server (debug)",
+      "type": "node",
+      "request": "launch",
+      "program": "${workspaceFolder}/src/server.ts",
+      "cwd": "${workspaceFolder}",
+      "console": "integratedTerminal",
+      "skipFiles": ["<node_internals>/**"],
+      "preLaunchTask": "dev: ensure .dev/site.env",
+      "env": {
+        "MENU_ROOT": "${workspaceFolder}/.dev",
+        "MENU_SITE_CONFIG": "${workspaceFolder}/config/hopsngrains.site.json",
+        "SECURE_COOKIES": "false",
+        "LOG_LEVEL": "info",
+        "PORT": "3000"
+      }
+    },
+    {
+      "name": "Dev server (watch, no debugger)",
+      "type": "node-terminal",
+      "request": "launch",
+      "command": "npm run dev",
+      "cwd": "${workspaceFolder}"
+    },
+    {
+      "name": "Debug the open test file",
+      "type": "node",
+      "request": "launch",
+      "program": "${file}",
+      "cwd": "${workspaceFolder}",
+      "console": "integratedTerminal",
+      "skipFiles": ["<node_internals>/**"],
+      "runtimeArgs": ["--test"],
+      "autoAttachChildProcesses": true
+    },
+    {
+      "name": "Check the running site",
+      "type": "node",
+      "request": "launch",
+      "program": "${workspaceFolder}/scripts/check-site.ts",
+      "cwd": "${workspaceFolder}",
+      "console": "integratedTerminal",
+      "skipFiles": ["<node_internals>/**"],
+      "args": ["${input:siteUrl}"]
+    }
+  ],
+  "inputs": [
+    {
+      "id": "siteUrl",
+      "type": "promptString",
+      "description": "Base URL to check",
+      "default": "http://127.0.0.1:3000"
+    }
+  ]
+}

.vscode/settings.json

@@ -0,0 +1,23 @@
+{
+  "files.exclude": {
+    "**/.dev": true,
+    "**/.tmp": true,
+    "**/.npm-cache": true
+  },
+  "search.exclude": {
+    "**/.dev": true,
+    "**/.tmp": true,
+    "**/.npm-cache": true,
+    "**/node_modules": true
+  },
+  "files.watcherExclude": {
+    "**/.dev/**": true,
+    "**/.tmp/**": true,
+    "**/.npm-cache/**": true
+  },
+  "editor.tabSize": 2,
+  "editor.insertSpaces": true,
+  "files.eol": "\n",
+  "files.trimTrailingWhitespace": true,
+  "files.insertFinalNewline": true
+}

.vscode/tasks.json

@@ -0,0 +1,49 @@
+{
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "dev: ensure .dev/site.env",
+      "type": "npm",
+      "script": "dev:env",
+      "problemMatcher": []
+    },
+    {
+      "label": "dev: seed placeholder menus",
+      "type": "npm",
+      "script": "seed",
+      "problemMatcher": []
+    },
+    {
+      "label": "dev: watch server",
+      "type": "npm",
+      "script": "dev",
+      "problemMatcher": []
+    },
+    {
+      "label": "test",
+      "type": "npm",
+      "script": "test",
+      "group": { "kind": "test", "isDefault": true },
+      "problemMatcher": []
+    },
+    {
+      "label": "typecheck",
+      "type": "npm",
+      "script": "typecheck",
+      "group": { "kind": "build", "isDefault": true },
+      "problemMatcher": ["$tsc"]
+    },
+    {
+      "label": "verify the data directory",
+      "type": "npm",
+      "script": "verify",
+      "problemMatcher": []
+    },
+    {
+      "label": "repair missing derivatives",
+      "type": "npm",
+      "script": "repair",
+      "problemMatcher": []
+    }
+  ]
+}