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/init.ts

@@ -11,7 +11,10 @@ export interface InitOptions {
   force: boolean;
 }
 
-export async function initCommand(targetPath: string | undefined, opts: InitOptions): Promise<void> {
+export async function initCommand(
+  targetPath: string | undefined,
+  opts: InitOptions,
+): Promise<void> {
   const targetDir = path.resolve(process.cwd(), targetPath ?? ".");
   fs.mkdirSync(targetDir, { recursive: true });
   const configPath = path.join(targetDir, DEFAULT_CONFIG_NAME);
@@ -22,7 +25,11 @@ export async function initCommand(targetPath: string | undefined, opts: InitOpti
     return;
   }
 
-  const templatePath = path.join(resolveAppRoot(), "templates", DEFAULT_CONFIG_NAME);
+  const templatePath = path.join(
+    resolveAppRoot(),
+    "templates",
+    DEFAULT_CONFIG_NAME,
+  );
   const template = fs.readFileSync(templatePath, "utf-8");
   const rendered = template
     .replace("__PORT__", String(opts.port))
@@ -38,10 +45,15 @@ export async function initCommand(targetPath: string | undefined, opts: InitOpti
       );
     } else {
       const sessionSecret = crypto.randomBytes(32).toString("hex");
-      fs.writeFileSync(envPath, `TRIGGERSHELL_SESSION_SECRET=${sessionSecret}\n`);
+      fs.writeFileSync(
+        envPath,
+        `TRIGGERSHELL_SESSION_SECRET=${sessionSecret}\n`,
+      );
       console.log(`Created ${envPath} (keep this out of version control)`);
     }
-    console.log("\nAuth is enabled but no users are configured yet. Add one with:");
+    console.log(
+      "\nAuth is enabled but no users are configured yet. Add one with:",
+    );
     console.log(`  triggershell users add <username> --config ${configPath}`);
   }