Workflow runtime current state for review

[ste-bah]

Summary

This draft PR captures the current workflow-runtime repair state for external review.

It includes the current source, tests, fixtures, and refactors around generated V2 workflows, host-call execution, write validation, verification evidence, project artifacts, provider environment handling, source graph normalization, and related trading-data work.

Known status

This is not being presented as ready to merge.

The latest fresh canary stopped as NeedsReview:

• run: wf-afae6bee-73ef-4495-8957-ab1d367befb3
• failed call: blocked-verification-failed-1
• final result: /Volumes/Externalwork/archon-cli/project-1/.archon/workflows/wf-afae6bee-73ef-4495-8957-ab1d367befb3/v2/results/blocked-verification-failed-1-6b5dc676f2f5b47bd3f38d566c40b96fc4ddc4ef302a87fbf2b13226f2cf4c32.json

The workflow reached implementation-wave-1, ran remediation and verification repair cycles, but did not reach implementation-wave-2. The immediate blocker was artifact/evidence mismatch for TASK-TDL-001: some runtime project artifacts existed, but required per-task evidence files under .archon/artifacts/TASK-TDL-001/ were still missing.

Validation already run before this PR

Focused suites were previously run and passed during the repair session:

• workflow_live_v2_write
• workflow_live_v2_data
• workflow_live_v2_host
• workflow_live_v2_source_graph
• workflow_live_generated_contract
• workflow_live_generated_semantics
• workflow_live_v2_script
• workflow_live_execution_tests
• archon-workflow V2 result/runtime/resume tests

A release build was also produced and copied into the project canary path before the failed canary above.

Review request

Please review this as a messy current-state branch, with particular attention to:

• generated workflow contract drift
• artifact evidence path conventions
• write isolation and ownership validation
• verification-to-remediation lifecycle
• final report/evidence guard behavior
• whether large refactors introduced regressions or duplicated logic