feat: array wildcard

[anton62k]

Summary by cubic

Adds array wildcard [*] to map over arrays and access nested values. Works with dot chaining and sum/avg; multiple wildcards flatten nested arrays.

• New Features
  • Map property access across arrays: items[*].price -> [10, 20, 30]
  • Flatten nested arrays with chained wildcards: orders[].items[] -> [1, 2, 3, 4]
  • sum and avg support wildcard paths: sum(items[].price), avg(items[].rating)
  • Updated semantics to map props on arrays and flatten array-of-arrays; added tests and spec examples

^{Written for commit 2c42c6d. Summary will update on new commits. Review in cubic}

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud