chore: project setup and tooling cleanup (#26)

* add project setup

* add tools to eslint

* remove contributing.md

* update claude md

* chore: simplify CI to single Node.js version (22)

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

* use node 20

* adjust formatting

* fix linting

* format

* fix layout

* fix: align CI node version to .nvmrc (22), remove redundant gotcha

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

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-authored-by: arkon <arkon.85@hotmail.com>

src/session-lifecycle-log.ts

@@ -62,7 +62,7 @@ export class SessionLifecycleLog {
     }
 
     const lines = raw.trim().split('\n').filter(Boolean);
-    let entries: LifecycleEntry[] = [];
+    const entries: LifecycleEntry[] = [];
 
     // Parse in reverse (newest first) for efficiency with limit
     for (let i = lines.length - 1; i >= 0 && entries.length < limit; i--) {