* feat: handle $var: and $res: in arrays for transform_json_value
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix: resolve $var/$res arrays inside objects in transform_json_value
Replace top_level: bool with depth: u8 to fix the main bug where arrays
nested inside objects were never resolved. The Object arm recursed with
top_level: false, which caused the Array arm guard to reject the value.
With depth <= 2, arrays inside objects (depth 1-2) are now processed.
Also: transform all array elements unconditionally (handles $encrypted:
in worker, reserved $vars, nested structures), and warn on >1000 items.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>