[codex] Enforce global object limit

[asim48-ctrl]

/claim #42

Summary

• enforce objectLimit globally across rendered object groups after filters are applied
• keep the warning based on the pre-limit filtered object count
• show the warning whenever the limit is reached, even if step controls are not visible
• add focused tests for the shared limiter

Validation

• npx --yes bun@1.2.17 test tests/limitFilteredObjects.test.ts
• npx --yes bun@1.2.17 test
• npx --yes bun@1.2.17 run format:check
• npx --yes bun@1.2.17 run build

Demo note: the existing interactive-object-limit-layer-and-step-filtering fixture now caps to 3 total rendered objects instead of allowing up to 3 per object type.

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Project	Deployment	Actions	Updated (UTC)
graphics-debug	Ready	Preview, Comment	May 10, 2026 9:58pm

[asim48-ctrl]

Demo video for the UI bounty requirement:

This uses the existing interactive-object-limit-layer-and-step-filtering fixture: all layers shows Display limited to 3 objects. Received: 4., switching to layer1 removes the warning because the filtered object count is within the limit, and switching back restores the warning.