fix: cancel Nepal media preloads and respect drawing ownership

Retain active-flight preloading while canceling hidden frames and pending Facebook sessions on stop, disable, and replacement. Add lifecycle and pointer-ownership regression coverage. Apply the runtime formatting adopted on main and keep the existing source-shape check insensitive to that formatting.

docs/CURRENT-STATE.md

@@ -1,5 +1,7 @@
 # God's Eye View Current State
 
+Nepal media preloads survive repeated camera-flight updates, but Stop, event disable and replacement remove abandoned frames and revoke pending Facebook sessions. Fallback evidence-card clicks respect the shared drawing-tool pointer lease.
+
 Nepal flood lines classify the active terrain or photoreal surface, and the surge marker follows that surface. Geographic route coordinates are unchanged; dynamic lines do not rely on unsupported depth-failure materials. Later media-only shots keep their completed source-path history throughout arrival and card reveal.
 
 Scene Stop, replacement, seek, and teardown revoke the Upper Valley locator's delayed camera approach and orbit while preserving its visible callout. A revoked timer or camera callback cannot start another flight or interfere with a newer shot.