* fix(chat): allow failed turns to be forked
Failed turns can end in Paseo-generated timeline items without provider
message IDs. Anchor forks to canonical timeline positions while retaining
legacy boundaries for compatibility.
Place the fork summary before the new prompt and delimit it as structured
chat history.
* fix(chat): tighten fork boundary handling
* fix(app): preserve loader behavior in retained panels
Keep the running footer mounted across panel switches. Inactive loaders stop their animation work, then realign to the original wall-clock phase before they become visible.
* perf(app): remove inactive loader wrapper worklet
* perf(app): pause hidden turn elapsed timers
* perf(app): reduce loader animation work
Keep one wall-clock-aligned clock for visible loaders and detach retained
hidden loaders without unmounting them. Preserve the 950 ms sequence and
reduced-motion behavior.
* fix(app): stabilize streamed chat rendering
Use deterministic Markdown AST keys and preserve unique row identities when an assistant message resumes after a tool. Keep native gesture and plan-card children correctly keyed to avoid unsupported Fabric reconciliation paths.
* fix(app): stabilize retained native panels
Keep retained workspace roots in a stable native order and make active
panels present in the selection commit. Hidden panels now stop expensive
subscriptions and animations without losing mounted state.
* fix(app): harden retained panel activity
