[RUM-15609] Router integration PR workflow skills

[amortemousque]

Motivation

Experiment to build an agent pipeline generating draft Browser SDK router integration PR from framework public docs.

• Input: NPM framework link
• Output: draft PR with code, tests, and design.md explaining decisions

Changes

Test instructions

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

[datadog-datadog-prod-us1]

🎉 All green!

❄️ No new flaky tests detected
🧪 All tests passed

🎯 Code Coverage (details)
• Patch Coverage: 100.00%
• Overall Coverage: 77.61% (+0.58%)

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 206d098 | Docs | Datadog PR Page | Give us feedback!}

[cit-pr-commenter-54b7da]

Bundles Sizes Evolution

📦 Bundle Name	Base Size	Local Size	𝚫	𝚫%	Status
Rum	177.94 KiB	177.94 KiB	0 B	0.00%	✅
Rum Profiler	6.16 KiB	6.16 KiB	0 B	0.00%	✅
Rum Recorder	27.03 KiB	27.03 KiB	0 B	0.00%	✅
Logs	56.40 KiB	56.40 KiB	0 B	0.00%	✅
Rum Slim	133.81 KiB	133.81 KiB	0 B	0.00%	✅
Worker	23.63 KiB	23.63 KiB	0 B	0.00%	✅

🚀 CPU Performance

Action Name	Base CPU Time (ms)	Local CPU Time (ms)	𝚫%
RUM - add global context	0.0085	0.0055	-35.29%
RUM - add action	0.0264	0.0178	-32.58%
RUM - add error	0.0247	0.0163	-34.01%
RUM - add timing	0.0053	0.0036	-32.08%
RUM - start view	0.0233	0.0141	-39.48%
RUM - start/stop session replay recording	0.0014	0.0008	-42.86%
Logs - log message	0.0306	0.0149	-51.31%

🧠 Memory Performance

Action Name	Base Memory Consumption	Local Memory Consumption	𝚫
RUM - add global context	25.97 KiB	26.55 KiB	+589 B
RUM - add action	98.72 KiB	85.90 KiB	-12.82 KiB
RUM - add timing	26.43 KiB	27.71 KiB	+1.28 KiB
RUM - add error	85.28 KiB	80.42 KiB	-4.86 KiB
RUM - start/stop session replay recording	26.30 KiB	26.32 KiB	+18 B
RUM - start view	486.03 KiB	482.65 KiB	-3.38 KiB
Logs - log message	92.85 KiB	87.27 KiB	-5.58 KiB

🔗 RealWorld