Voice mode state not preserved correctly across sessions

Problem

When voice mode is enabled in a session and the user exits and starts a new session:

1. Voice mode appears to be "enabled" (carried over from settings) but doesn't actually work
2. When the user types /voice to fix it, it disables voice mode (toggling the stale "on" state to off)
3. The user has to type /voice a second time to actually enable working voice mode

Expected Behavior

Either:

• Voice mode state should be properly restored and functional when starting a new session, OR
• Voice mode should start fresh (disabled) in each new session so a single /voice enables it

Current Behavior

The state is half-preserved — the toggle thinks it's "on" from the previous session, but the actual voice functionality isn't connected. This means /voice toggles it to "off" first, requiring a double-toggle to get working voice mode.

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