* fix(master): fast resume state and default resumeState to true
When resumeState is enabled in single-master mode, the raft server had
existing log entries so the self-join path couldn't promote to leader.
The server waited the full election timeout (10-20s) before self-electing.
Fix by temporarily setting election timeout to 1ms before Start() when
in single-master + resumeState mode with existing log, then restoring
the original timeout after leader election. This makes resume near-instant.
Also change the default for resumeState from false to true across all
CLI commands (master, mini, server) so state is preserved by default.
* fix(master): prevent fastResume goroutine from hanging forever
Use defer to guarantee election timeout is always restored, and bound
the polling loop with a timeout so it cannot spin indefinitely if
leader election never succeeds.
* fix(master): use ticker instead of time.After in fastResume polling loop
4efe0acaf5