[044] Implement responsive tablet UI

[konard]

Parent epic: #1

Phase: Platform Wrappers
Priority: 44

Scope

Adapt core Teleton Client layouts for tablet viewports with ergonomic navigation and readable split panes.

Implementation Steps

• Define tablet breakpoints and layout rules for chats, settings, agent, and wallet views.
• Add responsive navigation and pane behavior for portrait and landscape modes.
• Capture screenshot or layout tests for representative tablet sizes.

Acceptance Criteria

• Tablet layouts avoid overlapping content in portrait and landscape.
• Primary chat, agent, and wallet workflows remain reachable without desktop-only controls.
• Responsive behavior is documented or covered by tests.

Automation

Generated from #1 using scripts/decompose-epic.mjs.