Harden query repair edge cases

[duriantaco]

Summary

• Fix query repair false positives from dotted string literals like 'Foo.Bar'
• Validate against fields found across sparse arrays, not only the first object
• Prefer nested leaf matches and selected aliases when repairing typos
• Quote special-character keys in Smart Inspect suggestions and repair Try commands
• Validate fields inside from-query row contexts and selected expressions

Deep sweep repros fixed

• python -m jonq tests/json_test_files/all.json "select name where text contains 'Foo.Bar'"
• python -m jonq tests/json_test_files/missing_fields.json "select id, name, age" -t
• python -m jonq tests/json_test_files/nested.json "select name where cty = 'New York'"
• python -m jonq tests/json_test_files/special_characters_keys.json
• python -m jonq tests/json_test_files/special_characters_keys.json "select first_nme"
• python -m jonq tests/json_test_files/nested.json "select order_id, pric from [].orders" -t
• python -m jonq tests/json_test_files/simple.json "select coalesce(nme, name) as display"
• python -m jonq tests/json_test_files/simple.json "select city, count(*) as count group by city having cnt > 1"

Verification

• pytest -q tests/test_new_features.py tests/test_main_edge_cases.py
• pytest -q
• uvx ruff check --force-exclude jonq tests
• python -m compileall -q jonq
• LC_ALL=C LANG=C python -m sphinx -b html docs/source /tmp/jonq-docs-deep-sweep-final
• python -m pre_commit run --all-files
• python -m pre_commit run --hook-stage pre-push --all-files