🐛 fix bundle size increase threshold never triggering

[rgaignault]

Motivation

The bundle-size PR comment never flags a size increase. The warning was meant to fire at +5% growth but never does.

Changes

percentageChange is a ratio (0.05 = 5%), but it was compared against SIZE_INCREASE_THRESHOLD = 5, i.e. +500% — so the ⚠️ status and the "exceeds 5%" warning were effectively dead. The table itself was fine since the Δ% column is formatted separately. Set the threshold to 0.05.

Test instructions

Hard to test without a real +5% bundle bump. Reviewable by reading the diff.

Checklist

• Tested locally
• Tested on staging
• Added unit tests for this change.
• Added e2e/integration tests for this change.
• Updated documentation and/or relevant AGENTS.md file

[chatgpt-codex-connector]

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[cit-pr-commenter-54b7da]

Bundles Sizes Evolution

📦 Bundle Name	Base Size	Local Size	𝚫	𝚫%	Status
Rum	172.76 KiB	172.76 KiB	0 B	0.00%	✅
Rum Profiler	8.22 KiB	8.22 KiB	0 B	0.00%	✅
Rum Recorder	21.14 KiB	21.14 KiB	0 B	0.00%	✅
Logs	55.44 KiB	55.44 KiB	0 B	0.00%	✅
Rum Slim	130.87 KiB	130.87 KiB	0 B	0.00%	✅
Worker	22.96 KiB	22.96 KiB	0 B	0.00%	✅

[datadog-prod-us1-6]

🎉 All green!

🧪 All tests passed
❄️ No new flaky tests detected

🎯 Code Coverage (details)
• Patch Coverage: 100.00%
• Overall Coverage: 77.19% (+0.00%)

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 3718675 | Docs | Datadog PR Page | Give us feedback!}

[rgaignault]

/merge

[gh-worker-devflow-routing-ef8351]

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2026-07-06 18:28:16 UTC ℹ️ Start processing command /merge

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2026-07-06 18:29:14 UTC ⚠️ MergeQueue: This merge request was unqueued

roman.gaignault@datadoghq.com unqueued this merge request

[rgaignault]

/merge -c

[gh-worker-devflow-routing-ef8351]

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2026-07-06 18:29:09 UTC ℹ️ Start processing command /merge -c