feat(audience): rename event property keys to snake_case [SDK-412]

[nattb8]

Renames all multi-word Audience event property keys from camelCase to snake_case to align with industry standard (Segment, GA4). Event names were already snake_case; this makes properties consistent.

UTM params and click IDs (utm_source, gclid, etc.) are unchanged — they were already snake_case.

Fixes SDK-412.

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Note

Medium Risk
This is a breaking schema change: event payload property names emitted by both @imtbl/audience and @imtbl/pixel are renamed, which can break downstream analytics pipelines and integrator code expecting camelCase.

Overview
Standardizes all multi-word event property keys from camelCase to snake_case across the web SDK and pixel (e.g. session_id, game_id, item_id, duration_sec, email_hash, ga_client_id).

Updates pixel autocapture payloads (forms/links/sessions/3rd-party IDs), SDK typed event interfaces and compile-time tests, and aligns sample-app/docs; bumps @imtbl/pixel to 0.3.0.

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[nx-cloud]

View your CI Pipeline Execution ↗ for commit 4f8531b

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☁️ Nx Cloud last updated this comment at 2026-05-22 03:09:13 UTC

[github-actions]

✅ Pixel Bundle Size — @imtbl/pixel

Metric	Size	Delta vs main
Gzipped	6347 bytes (6.19 KB)	-3 bytes
Raw (minified)	17468 bytes	+18 bytes

Budget: 10.00 KB gzipped (warn at 8.00 KB)

[github-actions]

✅ Audience Bundle Size — @imtbl/audience

Metric	Size	Delta vs main (60a837f)
Gzipped	18710 bytes (18.27 KB)	+6 bytes
Raw (minified)	54679 bytes	+4 bytes

Budget: 24.00 KB gzipped (warn at 20.00 KB)

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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