Fix Android touch scrolling and rework mobile/tablet UI

[bifrost0x]

Summary

• add a viewport- and capability-aware mobile application shell with a terminal-first phone layout, session summary, command input, and bottom navigation
• add touch scrollback and pointer-capable terminal scrollbar handling with deterministic listener and timer cleanup
• rework Hosts, File Manager, Commands, Settings, and Admin layouts for phone and tablet containment while preserving every existing local feature
• add accessible tablet navigation and a modal More sheet with inert background handling, focus trapping, Escape support, and focus restoration
• localize all new controls across the six supported locale blocks and add regression coverage for the responsive behavior

Validation

• npm run lint:js
• npm run test:js — 34/34 test files passed
• focused Python UI, shell, and locale suite — 74/74 passed
• broad Python suite — effective 2,274 passed and 29 skipped after the four sandbox-blocked loopback cases passed with local socket permission
• npm run test:e2e — 100/100 passed
• git diff --check
• completed Codex Security diff scan — 13/13 changed source and template surfaces reviewed, 0 reportable findings

Closes #163

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-08-30T11:50:30.464500Z	f56fae6	PR opened

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[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: f56fae6251

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