chore: narrow default bundle to 5 core packages

Default set: notes, chat, chat-core, mermaid-renderer, schedules.
Removes dashboard, workflow-chat, workflow-demo, bug-report-triage,
content-approval, and employee-onboarding from auto-install. All
packages remain available via BUNDLED_PACKAGES=* or explicit list.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

server/handlers/packages_bundled.go

@@ -23,23 +23,16 @@ import (
 )
 
 // defaultBundledPackages is the curated set of packages installed by default.
-// This is the dev/test bundle — includes demos and workflow examples.
 // Other packages still ship in the Docker image but require BUNDLED_PACKAGES
 // to be set explicitly (or "*" for all).
 //
-// Recommended production override (lean):
-//   BUNDLED_PACKAGES=notes,chat,chat-core,cluster-dashboard
+// Recommended production override: BUNDLED_PACKAGES=notes,chat,chat-core,mermaid-renderer,schedules
 var defaultBundledPackages = map[string]bool{
-	"notes":                 true,
-	"chat":                  true,
-	"chat-core":             true,
-	"workflow-chat":         true,
-	"dashboard":             true,
-	"cluster-dashboard":     true,
-	"workflow-demo":         true,
-	"bug-report-triage":     true,
-	"content-approval":      true,
-	"employee-onboarding":   true,
+	"notes":            true,
+	"chat":             true,
+	"chat-core":        true,
+	"mermaid-renderer":  true,
+	"schedules":        true,
 }
 
 // InstallBundledPackages scans bundledDir for .pkg archives and installs