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/runner/events.ts

@@ -9,7 +9,8 @@ declare global {
  * Anchored on `globalThis` because Next compiles Route Handlers through its own module graph,
  * separate from the modules `server.ts` requires directly via tsx - a plain module-level
  * singleton would silently end up duplicated (one copy per graph) instead of shared. */
-export const runEvents: EventEmitter = globalThis.__triggershellRunEvents ?? new EventEmitter();
+export const runEvents: EventEmitter =
+  globalThis.__triggershellRunEvents ?? new EventEmitter();
 globalThis.__triggershellRunEvents = runEvents;
 runEvents.setMaxListeners(0);