Changing "Default Pinned Models" in admin settings had no effect for anyone who had already opened Open WebUI once. The sidebar copied the admin default into that user's own settings the first time it rendered and saved it to the server, which marked them as having customized their pins, so every later change to the default was ignored for them. Merely loading the page was enough, the user never had to touch a pin.
The default is now resolved for display only, through a shared store that falls back to the admin list while the user has no pins of their own, the same way default models already work. Nothing is written to the user's settings until they actually pin, unpin or reorder something, at which point their choice takes over for good. Unpinning everything still persists an empty list rather than snapping back to the default.
Users whose settings were already overwritten by the old behaviour keep that copy, since a stored pin list cannot be told apart from a deliberate one.
Fixes a drag-reorder path that mixed sidebar positions with stored ones, and stops the sidebar section reopening itself after any unrelated settings change.
Every toggle row in the chat integrations menu (filters, Web Search, Image, Code Interpreter, Tools, Skills) is a button whose on/off state was carried only by the decorative Switch inside it. Screen readers announced the row name and nothing else, so there was no way to tell whether a tool or feature was active without looking at it.
Each row button now carries aria-pressed, and the Switch wrapper is marked inert so the nested role=switch stops competing with the row for the announcement and stops adding a nameless tab stop. Hit testing skips inert content, so clicking the switch still toggles the row.
Tool rows that are not yet authenticated omit aria-pressed: activating those starts an OAuth redirect rather than toggling, so announcing them as an unpressed toggle would be wrong.
The Web Search, Image and Code Interpreter rows also had a state-flipping aria-label ("Disable Web Search") on top of aria-pressed, which announces as "Disable Web Search, pressed" and reads as the opposite of the truth. Removed: the visible row text already names each control.
Fixes#17150
