fix: remove context reaper to prevent background tabs from going stale (#4)

context.go

@@ -42,8 +42,6 @@ type Context struct {
 	createdAt           time.Time
 	sseConnected        atomic.Bool
 	sseDisconnectedAt   atomic.Pointer[time.Time]
-	lastSeenAt          atomic.Pointer[time.Time]
-	suspended           atomic.Bool
 }
 
 // View defines the UI rendered by this context.
@@ -444,13 +442,6 @@ func (c *Context) resetPageState() {
 	c.mu.Unlock()
 }
 
-// suspend frees page-scoped resources while keeping the context shell alive
-// in the registry for seamless re-init on reconnect.
-func (c *Context) suspend() {
-	c.resetPageState()
-	c.suspended.Store(true)
-}
-
 // Navigate performs an SPA navigation to the given path. It resets page state,
 // runs the target page's init function (with middleware), and pushes the new
 // view over the existing SSE connection with a view transition animation.