chore(antithesis): Add provider_kind in sample config

[blt]

Summary

Pyld54 asserts a v3 tagset back-reference resolves to an earlier
tagset. Agent emits that back-reference only when a metric carries both
a shared prefix tagset and its own tags. Previously we only ever emitted
load that carried no shared prefix.

This commit adds provider_kind into the sampled datadog.yaml. Agent will
attach this as a global tag which acts as a shared prefix. 1/3 of
configs will not have provider_kind present.

Change Type

• Bug fix
• New feature
• Non-functional (chore, refactoring, docs)
• Performance

How did you test this PR?

References

[blt]

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

• chore(antithesis): Frechet Distance and intake rework #2228
• chore(antithesis): Add provider_kind in sample config #2218 👈 (View in Graphite)
• chore(antithesis): non-utf8 bytes in datagrams represent ~1% of generation #2217
• chore(antithesis): Bound contexts in runs #2216
• chore(antithesis): Alter dogstatsd generation to is_malformed regime #2215
• chore(antithesis): Intro Intake V3 #2214
• main

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

[pr-commenter]

Binary Size Analysis (Agent Data Plane)

Baseline: 7f0ba13 · Comparison: 1d9b68e · diff
Analysis Configuration: stripped binaries · Pass/Fail Threshold: +5%
Sizes: 41.60 MiB (baseline) vs 41.60 MiB (comparison)
Size Change: +0 B (+0.00%)

✅ Binary size difference within threshold

Changes by Module

Module	File Size	Symbols
anon.44a0faa3240fa409baa379409d152aec.1.llvm.17202424994989785089	-130 B	1
anon.44a0faa3240fa409baa379409d152aec.1.llvm.9660746951319598755	+129 B	1
anon.44a0faa3240fa409baa379409d152aec.4.llvm.17202424994989785089	-114 B	1
anon.44a0faa3240fa409baa379409d152aec.4.llvm.9660746951319598755	+113 B	1
anon.44a0faa3240fa409baa379409d152aec.3.llvm.17202424994989785089	-109 B	1
anon.44a0faa3240fa409baa379409d152aec.3.llvm.9660746951319598755	+108 B	1
anon.44a0faa3240fa409baa379409d152aec.0.llvm.17202424994989785089	-97 B	1
anon.44a0faa3240fa409baa379409d152aec.0.llvm.9660746951319598755	+96 B	1
anon.44a0faa3240fa409baa379409d152aec.2.llvm.17202424994989785089	-95 B	1
anon.44a0faa3240fa409baa379409d152aec.2.llvm.9660746951319598755	+94 B	1
[Unmapped]	+5 B	1

Detailed Symbol Changes

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  [NEW]    +129  [NEW]     +40    anon.44a0faa3240fa409baa379409d152aec.1.llvm.9660746951319598755
  [NEW]    +113  [NEW]     +24    anon.44a0faa3240fa409baa379409d152aec.4.llvm.9660746951319598755
  [NEW]    +108  [NEW]     +19    anon.44a0faa3240fa409baa379409d152aec.3.llvm.9660746951319598755
  [NEW]     +96  [NEW]      +7    anon.44a0faa3240fa409baa379409d152aec.0.llvm.9660746951319598755
  [NEW]     +94  [NEW]      +5    anon.44a0faa3240fa409baa379409d152aec.2.llvm.9660746951319598755
   +10%      +5  [ = ]       0    [Unmapped]
  [DEL]     -95  [DEL]      -5    anon.44a0faa3240fa409baa379409d152aec.2.llvm.17202424994989785089
  [DEL]     -97  [DEL]      -7    anon.44a0faa3240fa409baa379409d152aec.0.llvm.17202424994989785089
  [DEL]    -109  [DEL]     -19    anon.44a0faa3240fa409baa379409d152aec.3.llvm.17202424994989785089
  [DEL]    -114  [DEL]     -24    anon.44a0faa3240fa409baa379409d152aec.4.llvm.17202424994989785089
  [DEL]    -130  [DEL]     -40    anon.44a0faa3240fa409baa379409d152aec.1.llvm.17202424994989785089
  [ = ]       0  [ = ]       0    TOTAL

[pr-commenter]

Regression Detector (Agent Data Plane)

Run ID: d82975bc-6cba-4f87-8f42-85a30506078f
Baseline: 7f0ba132 · Comparison: 1d9b68ec · diff

Optimization Goals: ✅ No significant changes detected

Fine details of change detection per experiment (5)

Experiments configured erratic: true are tagged (ignored) and skipped when determining which experiments regressed or improved. Experiments which are detected as erratic at runtime are tagged (erratic) to flag that the run's sample dispersion was high, but their regression / improvement signal still counts.

experiment	goal	Δ mean %	links
quality_gates_rss_dsd_heavy	memory	⚪ +0.09	metrics profiles logs
quality_gates_rss_idle	memory	⚪ -0.02	metrics profiles logs
quality_gates_rss_dsd_low	memory	⚪ -0.15	metrics profiles logs
quality_gates_rss_dsd_medium	memory	⚪ -0.17	metrics profiles logs
quality_gates_rss_dsd_ultraheavy	memory	⚪ -0.30	metrics profiles logs

Bounds Checks: ✅ Passed (5)

experiment	check	replicates	observed	links
quality_gates_rss_dsd_heavy	memory_usage	10/10	✅ 141 MiB ≤ 145 MiB	metrics profiles logs
quality_gates_rss_dsd_low	memory_usage	10/10	✅ 49.2 MiB ≤ 50 MiB	metrics profiles logs
quality_gates_rss_dsd_medium	memory_usage	10/10	✅ 77.4 MiB ≤ 80 MiB	metrics profiles logs
quality_gates_rss_dsd_ultraheavy	memory_usage	10/10	✅ 202 MiB ≤ 205 MiB	metrics profiles logs
quality_gates_rss_idle	memory_usage	10/10	✅ 31.7 MiB ≤ 40 MiB	metrics profiles logs

Explanation

A change is flagged as a regression when |Δ mean %| > 5.00% in the regressing direction for its optimization goal AND SMP marks the experiment as a regression (is_regression: true). Improvements use the matching criteria for the improving direction. Experiments configured erratic: true (tagged (ignored)) are skipped outright; experiments detected as erratic at runtime (tagged (erratic)) still count, since that flag describes sample dispersion rather than directional certainty. The Δ mean % cell is colored accordingly: 🟢 = improvement, 🔴 = regression, ⚪ = neutral. Reduction in CPU or memory is an improvement; reduction in ingress throughput is a regression.

[datadog-prod-us1-4]

More details

The sampled provider_kind values are valid Agent configuration values, and the empty branch is omitted so existing timelines retain the default behavior. The change is isolated to Antithesis config generation; no behavioral regression or diff-only production hazard was identified.

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[tobz]

LGTM.

(Approved in spite of the CI error since that's coming from the ancestor PR.)