Add Live Debugger lifetime event budgets

[watson]

Motivation

Add a circuit breaker so a single Live Debugger probe version cannot emit unbounded events over its lifetime.

Changes

Add new DD_DEBUGGER.init() options to configure lifetime budgets for:

• snapshot probe events
• non-snapshot probe events

Track emitted events per active probe version in the debugger runtime and automatically unregister probes once they exhaust their configured lifetime budget. Add unit tests covering snapshot and non-snapshot lifetime limits, skipping further collection after exhaustion, and resetting the budget when a new probe version is delivered.

Test instructions

1. Run yarn test:unit --spec packages/debugger/src/domain/api.spec.ts
2. In packages/debugger/src/entries/main.ts, verify that DebuggerInitConfiguration exposes:
   • maxSnapshotsPerProbeLifetime
   • maxNonSnapshotsPerProbeLifetime
3. In packages/debugger/src/domain/probes.ts, verify that initialized probes track:
   • eventsSentInLifetime
   • lifetimeBudgetWarningEmitted
4. In packages/debugger/src/domain/api.ts, verify that exhausted probes are removed after their final allowed send.

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

[watson]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• Add Live Debugger lifetime event budgets #4510 👈 (View in Graphite)
• Make Live Debugger per-second budgets configurable #4509
• Add Live Debugger package #4449 : 5 other dependent PRs (#4480 , #4503 , #4508 and 2 others)
• Fix TanStack Router lint resolution in test app #4513
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.

[cit-pr-commenter-54b7da]

Bundles Sizes Evolution

📦 Bundle Name	Base Size	Local Size	𝚫	𝚫%	Status
Rum	N/A	179.42 KiB	N/A	N/A	N/A
Rum Profiler	N/A	6.16 KiB	N/A	N/A	N/A
Rum Recorder	N/A	27.03 KiB	N/A	N/A	N/A
Logs	N/A	56.80 KiB	N/A	N/A	N/A
Rum Slim	N/A	135.26 KiB	N/A	N/A	N/A
Worker	N/A	23.63 KiB	N/A	N/A	N/A

🚀 CPU Performance

Pending...

🧠 Memory Performance

Action Name	Base Memory Consumption	Local Memory Consumption	𝚫
RUM - add global context	32.37 KiB	31.18 KiB	-1.19 KiB
RUM - add action	116.65 KiB	110.61 KiB	-6.03 KiB
RUM - add timing	32.04 KiB	32.32 KiB	+282 B
RUM - add error	96.70 KiB	101.65 KiB	+4.95 KiB
RUM - start/stop session replay recording	31.45 KiB	33.19 KiB	+1.73 KiB
RUM - start view	497.90 KiB	493.48 KiB	-4.42 KiB
Logs - log message	99.16 KiB	106.59 KiB	+7.43 KiB

🔗 RealWorld

[datadog-official]

🎉 All green!

❄️ No new flaky tests detected
🧪 All tests passed

🎯 Code Coverage (details)
• Patch Coverage: 81.25%
• Overall Coverage: 76.68% (+0.01%)

_{This comment will be updated automatically if new data arrives.
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