fix(observability): use canonical PULSE dir casing for Linux compatibility (#1175)

Verified: our 5.1.0 source already uses PULSE (uppercase) at all three locations in observability.ts (lines 65, 140, 1368) — we converged on this naming before the issue was filed. Merging the v5.0.0 patch gives current users the Linux fix.

Author: StarksLabs

Releases/v5.0.0/.claude/PAI/PULSE/Observability/observability.ts

@@ -66,7 +66,7 @@ const SECURITY_LOG_DIR = join(MEMORY_DIR, "SECURITY")
 const SETTINGS_PATH = join(HOME, ".claude", "settings.json")
 const LADDER_DIR = join(HOME, "Projects", "Ladder")
 
-const DEFAULT_DASHBOARD_DIR = join(PAI_DIR, "Pulse", "Observability", "out")
+const DEFAULT_DASHBOARD_DIR = join(PAI_DIR, "PULSE", "Observability", "out")
 
 // ── In-Memory Store (hook-pushed state/events) ──
 
@@ -149,7 +149,7 @@ function getDashboardDir(): string {
   const dir = config.dashboard_dir ?? DEFAULT_DASHBOARD_DIR
   // Resolve relative paths against Pulse directory
   if (!dir.startsWith("/")) {
-    return join(HOME, ".claude", "PAI", "Pulse", dir)
+    return join(HOME, ".claude", "PAI", "PULSE", dir)
   }
   return dir
 }
@@ -1647,7 +1647,7 @@ function readDirMdFiles(dir: string): { name: string, content: string, sections:
 function handleUserIndexApi(filter: string | null): Response {
   try {
     const PAI_DIR = process.env.PAI_DIR || join(process.env.HOME || "", ".claude", "PAI")
-    const indexPath = join(PAI_DIR, "Pulse", "state", "user-index.json")
+    const indexPath = join(PAI_DIR, "PULSE", "state", "user-index.json")
     const raw = Bun.file(indexPath)
     if (!raw.size) {
       return Response.json(