feat(contrib/mcp-go): Intent capture

[jboolean]

What does this PR do?

Motivation

Reviewer's Checklist

• Changed code has unit tests for its functionality at or near 100% coverage.
• System-Tests covering this feature have been added and enabled with the va.b.c-dev version tag.
• There is a benchmark for any new code, or changes to existing code.
• If this interacts with the agent in a new way, a system test has been added.
• New code is free of linting errors. You can check this by running ./scripts/lint.sh locally.
• Add an appropriate team label so this PR gets put in the right place for the release notes.
• Non-trivial go.mod changes, e.g. adding new modules, are reviewed by @DataDog/dd-trace-go-guild.

Unsure? Have a question? Request a review!

[jboolean]

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

• feat(contrib/mcp-go): Intent capture #4123 👈 (View in Graphite)
• feat(contrib/mcp-go): Simplified way to add tracing #4122
• feat(contrib/mcp-go): Trace MCP session initializations with MLObs spans #4101 : 2 other dependent PRs (#4106 , #4115 )
• feat(contrib/mcp-go): Initial mcp-go tracer implementation #4100
• main

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

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-11-18 22:31:16

Comparing candidate commit 9510ef0 in PR branch jb/contrib-mcp-go-intent-capture with baseline commit 625180d in branch jb/simplified-way-to-add-tracing.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 8 metrics, 0 unstable metrics.

[datadog-datadog-prod-us1]

⚠️ Tests

⚠️ Warnings

🧪 1 Test failed

TestMain from github.com/DataDog/dd-trace-go/v2/internal/orchestrion/_integration/mongo (Datadog)

Failed

-test.shuffle 1763502861428315611
panic: Log in goroutine after Test has completed: {"t":{"$date":"2025-11-18T21:54:21.699+00:00"},"s":"I",  "c":"NETWORK",  "id":22944,   "ctx":"conn4","msg":"Connection ended","attr":{"remote":"172.18.0.1:44080","isLoadBalanced":false,"uuid":{"uuid":{"$uuid":"3972e64b-9778-4b83-a96c-50821cd1efd8"}},"connectionId":4,"connectionCount":2}}
	
	

goroutine 66 [running]:
testing.(*common).logDepth(0xc000002a80, {0xc000af2140, 0x122}, 0x3)
	/opt/hostedtoolcache/go/1.24.10/x64/src/testing/testing.go:1064 +0x4b4
...

ℹ️ Info

❄️ No new flaky tests detected

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