Module tear_off 

workspace service handlers — floating-pane / torn-off tab flows (TearOffBlock, RedockFloatingPane, TearOffTab). Split out of workspace.rs; see that file’s dispatcher for the full method list.

Functions

handle_redock_floating_pane 🔒

handle_tear_off_block 🔒

handle_tear_off_tab 🔒

redock_as_tab 🔒

Place a just-redocked block as a TAB of the pane holding target_block_id, active: the reducer’s own tree first (LayoutStackPush, which also checks the block now lives in this tab), then a queued stackpush so the window showing that tab adds the pill. Same backend-then-frontend shape as pane.moveTab.