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/lib/docs.ts

@@ -12,13 +12,15 @@ export const DOCS: DocMeta[] = [
   {
     slug: "api",
     title: "API Reference",
-    description: "REST and WebSocket endpoints, auth, and request/response shapes.",
+    description:
+      "REST and WebSocket endpoints, auth, and request/response shapes.",
     file: "API.md",
   },
   {
     slug: "config",
     title: "Config Reference",
-    description: "Every field in triggershell.yml: server, auth, scripts, and variables.",
+    description:
+      "Every field in triggershell.yml: server, auth, scripts, and variables.",
     file: "CONFIG_REFERENCE.md",
   },
 ];
@@ -34,7 +36,8 @@ export function getDocMeta(slug: string): DocMeta | undefined {
 // Falls back to a source-relative resolution for contexts where server.ts never ran (e.g. tests).
 function docsDir(): string {
   const appRoot =
-    process.env.TRIGGERSHELL_APP_ROOT ?? path.resolve(import.meta.dirname, "..", "..");
+    process.env.TRIGGERSHELL_APP_ROOT ??
+    path.resolve(import.meta.dirname, "..", "..");
   return path.resolve(appRoot, "docs");
 }