Update CLI help text to document chrome-headless-shell tool

Use dynamic tool names in install/uninstall descriptions via
installableToolNames(). Add chrome-headless-shell examples and label
chromium as legacy in install, uninstall, and update commands.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: cderv

src/command/install/cmd.ts

@@ -14,7 +14,7 @@ import {
   selectTool,
   updateOrInstallTool,
 } from "../../tools/tools-console.ts";
-import { installTool } from "../../tools/tools.ts";
+import { installableToolNames, installTool } from "../../tools/tools.ts";
 import { resolveCompatibleArgs } from "../remove/cmd.ts";
 
 export const installCommand = new Command()
@@ -36,14 +36,18 @@ export const installCommand = new Command()
     "Update system path when a tool is installed",
   )
   .description(
-    "Installs a global dependency (TinyTex or Chromium).",
+    `Installs a global dependency (${installableToolNames().join(", ")}).`,
   )
   .example(
     "Install TinyTeX",
     "quarto install tinytex",
   )
   .example(
-    "Install Chromium",
+    "Install Chrome Headless Shell",
+    "quarto install chrome-headless-shell",
+  )
+  .example(
+    "Install Chromium (legacy)",
     "quarto install chromium",
   )
   .example(

src/command/uninstall/cmd.ts

@@ -13,6 +13,7 @@ import {
   removeTool,
   selectTool,
 } from "../../tools/tools-console.ts";
+import { installableToolNames } from "../../tools/tools.ts";
 
 export const uninstallCommand = new Command()
   .name("uninstall")
@@ -26,12 +27,20 @@ export const uninstallCommand = new Command()
     "Update system path when a tool is installed",
   )
   .description(
-    "Removes an extension.",
+    `Removes an extension or global dependency (${installableToolNames().join(", ")}).`,
   )
   .example(
     "Remove extension using name",
     "quarto remove <extension-name>",
   )
+  .example(
+    "Uninstall Chrome Headless Shell",
+    "quarto uninstall chrome-headless-shell",
+  )
+  .example(
+    "Uninstall Chromium (legacy)",
+    "quarto uninstall chromium",
+  )
   .action(
     async (
       options: { prompt?: boolean; updatePath?: boolean },

src/command/update/cmd.ts

@@ -47,7 +47,11 @@ export const updateCommand = new Command()
     "quarto update tool tinytex",
   )
   .example(
-    "Update Chromium",
+    "Update Chrome Headless Shell",
+    "quarto update tool chrome-headless-shell",
+  )
+  .example(
+    "Update Chromium (legacy)",
     "quarto update tool chromium",
   )
   .example(

src/tools/tools.ts

@@ -64,6 +64,10 @@ export function installableTools(): string[] {
   return Object.keys(kInstallableTools);
 }
 
+export function installableToolNames(): string[] {
+  return Object.values(kInstallableTools).map((tool) => tool.name);
+}
+
 export async function printToolInfo(name: string) {
   name = name || "";
   // Run the install