One-time "data leaves your device" acknowledgment flag for hosted
(non-local) AI providers, persisted like consent_acknowledged so the
banner doesn't nag on every use. serde(default) so it's false for any
settings.json written before this field existed.
Adds mcp_enabled/mcp_transport/mcp_port/mcp_expose/mcp_expose_recordings
to Settings, all defaulting to off/none so an upgrading settings.json
gets a fully-local default (FR-MCP-1). The auth token itself never lives
here -- OS credential store only (see mcp::token, next commit).
Device::get_id() string; None = system default (unchanged behavior).
#[serde(default)] so an existing settings.json without this key still
deserializes.
Backing fields for remembering the imported .pst path across sessions
and an opt-in startup auto-resync (T6.2). #[serde(default)] so an
existing settings.json without these keys still deserializes.
row_to_info now returns upload_transcript/notes/summary/recording,
trigger_on_finalize, allow_plaintext_lan, encrypt_before_upload so the UI can
pre-fill an edit form accurately (still never the secret, FR-SYNC-6).
iamdoubz