chore: trim noisy StoryViewer logs + fix self in timer.resume
Removes per-body-eval, onAppear/onDisappear, onChange, task
fired/done, image.onAppear, and startTimerIfSafe/resumeTimerIfSafe
skip logs — they spammed the log stream on every SwiftUI
re-evaluation and drowned out the events that matter.
Also fixes the missing self. on StoryTimer.resume's progress
interpolation, which broke the build the moment anything else
touched this file.