feat(ios): Face ID lock, Connection Info tab, and HIG fixes

[datlechin]

Summary

Mobile P0 HIG sweep — addresses 4 high-priority issues found in the iOS audit:

• Face ID / Touch ID / Optic ID lock with cold-launch protection and idle timeout (1, 5, 15, or 60 minutes), opt-in from Settings. Uses LAContext with .deviceOwnerAuthentication so the system passcode fallback is always available.
• Connection Info tab replaces the per-connection Settings tab (which was a duplicate of the global Settings sheet). Shows host, SSL, SSH tunnel, active database, schema, table/database/schema counts, and live connection status. Edit moves to a navigation bar pencil icon so the iOS 26 floating tab bar never covers it.
• MetadataBadge component with dynamicTypeSize(...AX1) cap — column type pills, primary key markers, row counts, and index badges no longer break layouts at the largest accessibility sizes. Replaces 7 inline pill copies across 4 views.
• SQL editor keyboard accessory uses UIInputView(inputViewStyle: .keyboard) instead of the deprecated UIScreen.main.bounds.width measurement. The toolbar now self-sizes via autoresizingMask and inherits keyboard vibrancy automatically.

Plus a few drive-by fixes that surfaced once the type-checker could finish:

• RowDetailView toolbar share/copy menu extracted to a @ViewBuilder property to dodge a Swift type-check timeout
• RowDetailView ForEach migrated from IndexedRow.wrap(rows) (type mismatch on [Row]) to rows.indices (length is invariant in this view)
• ConnectionInfoView Stats section sized correctly by replacing LabeledContent { @ViewBuilder Label } with a flat HStack

Test plan

• Settings → toggle "Require Face ID" → lock screen appears at next cold launch and after configured idle timeout
• Lock screen accepts Face ID; cancel falls back to passcode; failure shows "Try Again"
• Connection Info tab (Fix data grid undo/redo and multi-row deletion bugs #4) shows correct values for MySQL, PostgreSQL (with schema row), and SQLite (with file/path section instead of server)
• Pencil icon in navigation bar opens the edit sheet; Edit Connection no longer rendered in the form body
• Settings → Accessibility → Display & Text Size → AX5 → metadata pills stay readable in Structure (Indexes tab with Primary + Unique + type), DataBrowser, RowDetail, InsertRow, TableList
• SQL editor keyboard accessory toolbar still renders the keyword chips (SELECT, FROM, …) and dismiss button; no width clipping in landscape or on iPad split view
• Run a query, swipe through rows in Row Detail, save a change — no type-check timeouts, no IndexedRow crashes