Run prettier across the repo, exclude the lockfile from it

Prettier had never been run in --check mode here before, so this had
drifted across most files (markdown tables, long option() chains,
line wrapping). Purely formatting, no logic changes - needed so a CI
format:check gate can actually pass. Adds .prettierignore for
pnpm-lock.yaml specifically: prettier's YAML formatter rewrites every
quoted key (single -> double quotes) producing an ~8700-line diff of
pure noise on a file pnpm itself owns the formatting of.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/cli/commands/doctor.ts

@@ -14,7 +14,10 @@ export async function doctorCommand(opts: DoctorOptions): Promise<void> {
 
   const configPath = resolveConfigPath(opts.config);
   const exists = fs.existsSync(configPath);
-  rows.push(["Config path", `${configPath} ${exists ? "(exists)" : "(not found)"}`]);
+  rows.push([
+    "Config path",
+    `${configPath} ${exists ? "(exists)" : "(not found)"}`,
+  ]);
 
   if (exists) {
     try {
@@ -22,7 +25,9 @@ export async function doctorCommand(opts: DoctorOptions): Promise<void> {
       const portFree = await isPortFree(config.server.host, config.server.port);
       rows.push([
         "Port available",
-        portFree ? "yes" : `no (${config.server.host}:${config.server.port} in use)`,
+        portFree
+          ? "yes"
+          : `no (${config.server.host}:${config.server.port} in use)`,
       ]);
       rows.push(["Scripts configured", String(config.scripts.length)]);
       rows.push(["Auth enabled", String(config.auth.enabled)]);