feat: port CLI, TUI, and launcher from v1.5 into v2 (#1452)

Ports the CLI, TUI, and launcher from v1.5 into v2 behind a single
`mcp-inspector` entrypoint (launcher → web/cli/tui). Includes the
`mcp-inspector --web --dev` launcher fix (Vite alias resolution + prod-server
double-start), the root `postinstall` install cascade with simplified CI, and
spec/AGENTS docs (no-workspaces rationale, Development setup).

Closes #1246.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

clients/tui/src/utils/promptArgsToForm.ts

@@ -0,0 +1,47 @@
+/**
+ * Converts prompt arguments to ink-form format
+ */
+
+import type { FormStructure, FormSection, FormField } from "ink-form";
+import type { PromptArgument } from "@modelcontextprotocol/sdk/types.js";
+
+/**
+ * Converts prompt arguments array to ink-form structure
+ */
+export function promptArgsToForm(
+  promptArguments: PromptArgument[],
+  promptName: string,
+): FormStructure {
+  const fields: FormField[] = [];
+
+  if (!promptArguments || promptArguments.length === 0) {
+    return {
+      title: `Get Prompt: ${promptName}`,
+      sections: [{ title: "Parameters", fields: [] }],
+    };
+  }
+
+  for (const arg of promptArguments) {
+    const field: FormField = {
+      name: arg.name,
+      label: arg.name,
+      type: "string", // Prompt arguments are always strings
+      required: arg.required !== false, // Default to required unless explicitly false
+      description: arg.description,
+    };
+
+    fields.push(field);
+  }
+
+  const sections: FormSection[] = [
+    {
+      title: "Prompt Arguments",
+      fields,
+    },
+  ];
+
+  return {
+    title: `Get Prompt: ${promptName}`,
+    sections,
+  };
+}