feat(coordinator): add result pagination to the Query menu for keyboard access (#1490)

[datlechin]

Part of #1490 (keyboard, focus, accessibility). Menus & shortcuts surface.

The pagination shortcuts (Cmd+[ / Cmd+]) were bound only on the results-bar toolbar buttons, so they were not discoverable from the menu bar and First/Last Page had no menu home at all. This adds Previous / Next / First / Last Page to the Query menu, wired to the existing MainContentCoordinator paging methods through four thin MainContentCommandActions wrappers, with the existing .optionalKeyboardShortcut bindings. No new shortcut keys invented; First/Last stay unbound by default and are rebindable in Settings, Keyboard.

Makes the pager keyboard-discoverable and reachable from the menu bar. Lint clean, style gate clean.

[chatgpt-codex-connector]

💡 Codex Review

https://github.com/TableProApp/TablePro/blob/98ea7831c35eb1344486c659e226caf19e84c5d7/TableProApp.swift#L440
Gate page commands to paginatable table results

With a connected window this registers and enables Cmd+] even when the selected tab is a normal SQL query tab. The existing pagination controls are only rendered for table tabs (MainStatusBarView checks snapshot.tabType == .table), and rebuildTableQuery(at:) returns without changing SQL when there is no tableContext.tableName; so for an arbitrary SELECT that loads at least one page, goToNextPage() advances the pagination state and reruns the same query instead of fetching an offset page. Please disable the menu shortcut unless the current tab can actually page, or add the same table/pagination guards before dispatching the action.

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