[alexruidan (xLagerFeuer)]

Problem

RunContext.create(..., task=..., output_dir=...) resumes an existing task.json without comparing its task ID with the caller's requested task. Reusing the same directory for a different task can silently attribute one task's saved checkpoint to another.

Change

• Reject a resume when the persisted task_id differs from the requested task ID, before changing the run context.
• Preserve valid same-task resume and creation of a fresh task output directory.
• Add deterministic source-native regression tests without browser or model execution.

Verification

• Original source microsoft/fara@a675d6d61c41c47ae87bacefeab22caad18e3e84: test-only patch 2 passed, 1 failed (mismatched task accepted).
• Patched source and exact public working-fork head 5b2499026322e25ac6d6182778914171a85f56b6: 3 passed, 0 failed running PYTHONPATH=src pytest -q tests/test_run_context_resume_identity.py with Python 3.12 and Pydantic v2.
• Whole agent/browser/model integration suite not run; no browser, model, benchmark, service or deployment claims.
• Two-file diff, one parent commit, original current main SHA, direct public fork and MIT license verified. No legal contributor-person DCO or CLA claim.

Provenance and scope

This is a bounded native checkpoint correctness fix informed by the current OpenSiro assessment, independently reproduced against first-party code, not proof of VSM grade improvement or measured user benefit. Native evidence: OpenSiro packet #249 and executor #250.

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AI-assisted contribution disclosure

VSM assessment: Current record · Snapshot used for this PR

Assessment date: 2026-10-17 (reviewed_at) · Assessed source revision: a675d6d61c41c47ae87bacefeab22caad18e3e84

This PR was prepared and published through the OpenSiro Upstream Contributions AI-agent workflow under the owner's standing publication mandate, without a separate human approval of this PR. Technical analysis, code changes and reported checks were agent-driven; no independent human code review or correctness certification is claimed. Agent-generated changes may be incomplete or incorrect. Please review the diff and reproducible evidence independently.

The linked VSM assessment describes the assessed source revision on the stated date, not a guarantee about this PR or later upstream code. Maintainers and their agents can compare the current record with the snapshot and reassess if the source or evidence has changed. The external maintainers alone decide whether to accept or merge this contribution.

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