Support tuple unpacking in dictionary comprehensions in eldritch-core

[google-labs-jules]

Implemented tuple unpacking for comprehensions (dict, list, set) in eldritch-core.
This allows syntax like {k: v for k, v in items}.
Changes involve:

• Updating AST to support multiple loop variables.
• Updating Parser to parse comma-separated loop variables.
• Updating Evaluator to unpack items into variables.
• Adding comprehensive tests.

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PR created automatically by Jules for task 4124653622789545699 started by @KCarretto

[google-labs-jules]

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[github-actions]

Summary

Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
3053    ±0	3053    ±0	0    ±0	0    ±0	0    ±0	0    ±0	1ms    ±0

Previous Results

Build 🏗️	Result 🧪	Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
#486	✅	3053	3053	0	0	0	0	29.9s

Insights

Average Tests per Run	Total Flaky Tests	Total Failed	Slowest Test (p95)
3053	0	0	6.9s

Slowest Tests

Test 📝	Results 📊	Duration (avg) ⏱️	Duration (p95) ⏱️
eldritch: file::temp_file_impl::tests::test_temp_file_r_name	3	2.3s	6.9s
eldritch: file::temp_file_impl::tests::test_temp_file_r_name	3	2.3s	6.9s
eldritch: file::temp_file_impl::tests::test_temp_file_r_name	3	2.3s	6.9s
eldritch: file::template_impl::tests::test_template_basic	3	2.4s	6.9s
eldritch: file::template_impl::tests::test_template_basic	3	2.4s	6.9s
eldritch: file::template_impl::tests::test_template_basic	3	2.4s	6.9s
eldritch: file::temp_file_impl::tests::test_temp_file_w_name	3	2.3s	6.9s
eldritch: file::temp_file_impl::tests::test_temp_file_w_name	3	2.3s	6.9s
eldritch: file::temp_file_impl::tests::test_temp_file_w_name	3	2.3s	6.9s
eldritch: file::template_impl::tests::test_template_build_context	3	2.3s	6.9s

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

Github Test Reporter by CTRF 💚

[nullmonk]

Tested with this:

s = {1,2,3}
print([y+10 for y in s])

d = {
    "x": 1,
    "y": 2,
    "z": 3,
}
print({k: v for k,v in d.items()})

l = [
    ("x", 1),
    ("y", 2),
    ("z", 3),
]
print({x: y+10 for x,y in l})

Everything looks good