[HIGH] **Unbounded JSON mutation in routine_create_schema()** — Loop at lines 476-601

[ironclaw-ci]

[HIGH:100] Issue Found by Staging CI Review

Severity: HIGH
Confidence: 100/100
PR comment: #1359 (comment)

Description

Unbounded JSON mutation in routine_create_schema() — Loop at lines 476-601 mutates schema with 16 separate .insert() calls when building compatibility aliases. Creates transient allocations and repeated object lookups. Should batch allocations or use builder pattern.

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Auto-created by staging-ci Claude Code review

[henrypark133]

Closing as won't fix. The 16 .insert() calls are normal schema construction — this is how compatibility aliases are added to a JSON schema object. The real performance issue is that this construction isn't cached, which is tracked separately in #1361.