[AI] Expand Test Coverage - dsl/parser

[KCarretto]

This PR expands test coverage for the Eldritch DSL parser by adding a new test suite for edge cases. It also fixes a bug in argument parsing where **kwargs was not enforced as the last argument.

Changes:

• Created implants/lib/eldritch/eldritch-core/tests/parser_edge_cases.rs.
• Modified implants/lib/eldritch/eldritch-core/src/parser/expr.rs to enforce **kwargs positioning.

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PR created automatically by Jules for task 17867844541743023101 started by @KCarretto

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[github-actions]

Summary

Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
2625    ±0	2625    ±0	0    ±0	0    ±0	0    ±0	0    ±0	1ms    ±0

Previous Results

Build 🏗️	Result 🧪	Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
#1009	✅	2625	2625	0	0	0	0	36.0s

Insights

Average Tests per Run	Total Flaky Tests	Total Failed	Slowest Test (p95)
2625	0	0	5.2s

Slowest Tests

Test 📝	Results 📊	Duration (avg) ⏱️	Duration (p95) ⏱️
TestDockerExecutor_Build_ContextCancellation	1	5.2s	5.2s
eldritch-libsys: std::dll_inject_impl::tests::test_dll_inject_simple	1	5.2s	5.2s
imix::bin/imix: install::tests::test_install_execution	3	1.2s	3.4s
imix::bin/imix: install::tests::test_install_execution	3	1.2s	3.4s
imix::bin/imix: install::tests::test_install_execution	3	1.2s	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
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
imix::bin/imix: tests::task_tests::test_task_streaming_error	3	3.0s	3.0s

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

Github Test Reporter by CTRF 💚