Add advanced keybinds to ShellV2 terminal

[KCarretto]

Implemented Alt+Left/Right for word navigation, Alt+Delete/Backspace for word deletion, Home/End, and Ctrl+K. Utilized xterm.js macOptionIsMeta to support Option key on macOS. Extracted logic to shellUtils.ts.

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PR created automatically by Jules for task 2708862403783852325 started by @KCarretto

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[github-actions]

Summary

Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
2682    ±0	2682    ±0	0    ±0	0    ±0	0    ±0	0    ±0	1ms    ±0

Previous Results

Build 🏗️	Result 🧪	Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
#1284	✅	2682	2682	0	0	0	0	30.1s

Insights

Average Tests per Run	Total Flaky Tests	Total Failed	Slowest Test (p95)
2682	0	0	5.9s

Slowest Tests

Test 📝	Results 📊	Duration (avg) ⏱️	Duration (p95) ⏱️
TestDockerExecutor_Build_ContextCancellation	1	5.9s	5.9s
eldritch-libsys: std::dll_inject_impl::tests::test_dll_inject_simple	1	5.1s	5.1s
TestInteractiveShell	1	5.0s	5.0s
TestOtherStreamOutput	1	5.0s	5.0s
imix::bin/imix: install::tests::test_install_execution	3	1.5s	4.5s
imix::bin/imix: install::tests::test_install_execution	3	1.5s	4.5s
imix::bin/imix: install::tests::test_install_execution	3	1.5s	4.5s
TestDockerExecutor_Build_SimpleEcho	1	3.4s	3.4s
imix::bin/imix: tests::task_tests::test_task_streaming_error	3	3.0s	3.0s
imix::bin/imix: tests::task_tests::test_task_streaming_output	3	3.0s	3.0s

_{🎉 No failed tests in this run. | 🍂 No flaky tests in this run.}

Github Test Reporter by CTRF 💚