* fix(client): wait longer for session responses
* fix(client): default RPC waits to sixty seconds
* fix(app): preserve detached stream scroll on delayed history
Code drift: longer client RPC waits let delayed timeline responses arrive after a user scroll-away, so web stream anchoring must not reattach on transient scroll-top resets.
Restore the 15s connect deadline and leave app initialization slack above the default 60s session RPC wait.
* fix(client): keep helper waits within caller deadlines
Review fix: the 60s default session RPC wait leaked into wait previews and waitForAgentUpsert helper fetches. Bound those helper RPCs to the caller deadline or a short best-effort preview timeout, and allow small scroll ranges to reattach at bottom.
* fix(client): respect caller timeout budgets
* fix(cli): keep diagnostic probes responsive
* Refactor daemon client request options
* Preserve daemon client legacy overloads
* feat: add live model and thinking option preferences UI
* refactor: remove agent variant support and clean up thinking options
* feat: live model + thinking presets (RPC)
