feat(cliv2): enable CaptureEngine billing lifecycle [IANDT-240]

[brettgurman-snyk]

Summary

Minimal cliv2 host adapter for IANDT-240: enable GAF capture orchestration and call clibilling.BeginCommand / clibilling.FinishCommand at command boundaries.

Requires GAF IANDT-237 + 238 + 240 (#681) merged and a go.mod bump.

Diff vs main (2 files)

File	Change
main.go	EnableIfConfigured + WithContributorBillingCapture(); BeginCommand / FinishCommand at command start and tearDown
go.mod	Comment documenting GAF dependency + local replace

No contributor_billing.go — lifecycle helpers live in GAF pkg/clibilling.

cliv2 wiring

globalEngine = clibilling.EnableIfConfigured(app.CreateAppEngineWithOptions(
    ...,
    app.WithContributorBillingCapture(),
))

cmdCtx := clibilling.BeginCommand(globalContext, globalEngine, config)
// Invoke(..., workflow.WithContext(cmdCtx))

clibilling.FinishCommand(teardownCtx, globalEngine, config, exitCode == 0)

Test plan

• go test ./pkg/core/... (with local GAF replace)
• CI after GAF merge + go.mod bump
• E2E pre-prod

Merge order

#664 → #671 → #681 → this PR (go.mod bump) → E2E

[snyk-io]

⛔ Snyk checks have failed. 2 issues have been found so far.

Status	Scan Engine	Critical	High	Medium	Low	Total (2)
⛔	Open Source Security	0	2	0	0	2 issues
✅	Licenses	0	0	0	0	0 issues
✅	Code Security	0	0	0	0	0 issues

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[github-actions]

	Warnings
⚠️	There are multiple commits on your branch, please squash them locally before merging!
⚠️	"[refactor(cliv2): call clibilling BeginCommand/FinishCommand directly IANDT-240](https://api.github.com/repos/snyk/cli/git/commits/e0fbc5f8e328410326ee627306fd6ce96965be4f)" is too long. Keep the first line of your commit message under 72 characters.
⚠️	"[feat(cliv2): attach capture bag and finish billing in teardown IANDT-240](https://api.github.com/repos/snyk/cli/git/commits/e2e960204fc28fb04dfc66e85aa085f448192d17)" is too long. Keep the first line of your commit message under 72 characters.

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