feat(envelope): carry execution-environment identity and sandbox LLM usage on exported spans - #80
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…exported spans SessionEnvironment (image, imageDigest, sandboxId, cwd, gitCommit) rides SessionRef, is stamped onto every span, and survives into the OTLP resource block. sandbox-events imports recover it from the wrapper context or the stream's runtime.ready event. Absent fields stay absent: 'environment not captured' remains distinguishable from any captured value, which is what downstream replay eligibility keys on.
…ported spans sandbox-events recordings put usage on the llm event row (OpenAI usage.prompt_tokens, opencode tokenUsage.inputTokens, bare snake_case); the converter dropped all of them, so an imported sandbox session lost token accounting and cost attribution at export time. LLM-kind rows now map model + input/output tokens + cost onto the span's canonical attributes. Absent counts stay absent — no invented zeros.
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✅ Auto-approved drewstone PR — 7859d0b1
This PR was opened by the trusted drewstone account.
The full PR reviewer audit still runs separately and will publish findings if it detects issues.
tangletools · auto-approval · reason: drewstone_author · 2026-08-05T18:49:23Z
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What
Two commits that make an exported trace carry the identity of the environment it ran in and the LLM usage it consumed:
b18292a—SessionEnvironmentonSessionRef; environment attributes stamped on spans and lifted into the OTLP resource block (container.image.name,container.image.digest,tangle.sandbox.id,tangle.environment.cwd); the sandbox-events importer recovers identity from wrapper context orruntime.ready.7859d0b— sandbox LLM-event model + token usage mapped onto exported spans.Why
A finding about a trace is only replayable if the trace names the exact image and cwd it ran in. This is the capture half of the proof-carrying findings loop: analyst findings over these spans can now be re-executed in the pinned image and receipted.
Proof (executed, not claimed)
Exercised end-to-end on a real glm-5.2 debugging session in
ctb-replay:a381a92725e8-uid1000(2026-08-04/05):sha256:b482f70f5df0e69ef630fbee6cf8cb2af39917aa7abd193d8ef91ee90eb680d5.~/bench-cache/ctb-20260801/goal1/goal2/receipts/).Branch is 2 commits ahead of
main, behind 0.