[Zacharon]

Superseded without merge by consolidated draft PR #12. The comparison, preserved capabilities and remaining H3/owner acceptance requirements are recorded there and in its engineering review. This branch and original evidence remain intact.

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An exported synthetic issue can now enter the existing AEOS packet/handoff/result contracts in a disposable local Git worktree. The new standard-library CLI prepares a fixed scoped draft, requires explicit synthetic-local authorization, supports manual T3/assistant transport or a labelled deterministic worker fixture, and saves mechanical verification evidence plus an applyable candidate patch. Issue text never selects commands, scope or authority.

The prototype reuses public.4's build_task_packet.py, handoff.py build/check/validate-result/review/complete and code_rationale.py. It anchors the original bundle/baselines, checks actual worktree changes including ignored/untracked files, refuses drift/tampered evidence/replay, and keeps independent H3 and owner acceptance pending. Frozen distribution/archive/site bytes are unchanged; no private vault material or raw local paths are committed.

Validation on Linux CPython 3.12.14:

• 24 repository tests passed, including 16 prototype integration/negative tests.
• 40 existing public.4 handoff/rationale tests passed.
• 20 boundary-scanner tests passed; tracked scan clean (269 files); available shallow history clean (125 blobs after the implementation commit).
• Public.4 package manifest check passed (42 payload files).
• Synthetic prepare → handoff → deterministic worker → verify passed; candidate patch applyability is tested.
• The local Windows-only validator intentionally refused Linux. Hosted Windows CPython 3.14.5 validation subsequently passed on commit 823c447: the packaged journey and 86 baseline regressions passed, plus all 24 repository tests (including the 16 new prototype tests), with no skips in the reported repository output. This is hosted Windows evidence, not a run on the operator's Windows 10 computer.
• Hosted public-boundary CI also passed, including the full reachable Git history scan.
• Manual T3/provider handoff, live GitHub fetching, independent H3 and owner integration acceptance remain unrun.

Hosted validation:

• Windows CPython 3.14.5
• Public boundary scan

The committed local-verification.json preserves the earlier Linux-only receipt; this PR description records the later hosted evidence without claiming the private/local Windows installation was tested.

Exact PowerShell commands, artifact hashes, manual/export boundaries and draft-PR evidence requirements are in prototypes/issue_handoff/README.md and local-verification.json. This is a bounded synthetic proof, not an autonomous factory, native sandbox, live model integration, authenticated approval or independent H3. Please keep this draft pending separate review and owner-controlled integration.