chore(release)(OMN-12245): bump omnimarket to v0.4.3

[jonahgabriel]

Evidence-Ticket: OMN-12245
Evidence-Source: OCC#2229
hotfix-evidence: OCC-2229
backmerge: #1070

Bumps omnimarket main release metadata to v0.4.3 because v0.4.2 already exists off the current main release head.

Verification:

• uv lock refreshed with package version v0.4.3
• Central OCC receipt: onex_change_control#2229
• Backmerge companion: omnimarket#1070

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[github-actions]

✅ PR Review Bot — CLEAN

Findings: 0
Run ID: ``

Note: Reviewer models are running as stubs (OMN-7969–OMN-7972 pending). Architectural findings from Phase 1 (arch-lint) are the authoritative signal until model handlers land.

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Verdict	Meaning
clean	No blocking findings
risks_noted	Findings noted; threads passed verification
blocking_issue	MAJOR/CRITICAL findings not resolved — do not merge

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[github-actions]

✅ Architectural Review — PASSED

Errors: 0
Warnings: 0

What this checks

Rule	Description
ARCH-TOPIC-001	No hardcoded Kafka topic strings in handler code
ARCH-DI-001	No event_bus=None bypass
ARCH-DI-002	No direct Handler instantiation outside workflow_runner/adapters
ARCH-DI-003	No reinvented DI containers
ARCH-TOPIC-002	contract.yaml topics follow `onex.{cmd

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No architectural violations found.

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[github-actions]

⚠️ Hostile Reviewer — DEGRADED (informational)

Blocking findings (critical/error): 0
Total findings: 0
Models succeeded: none

Note: All reviewer models failed or were unavailable. Degraded results are informational during the pilot phase (OMN-8524) and do not block merge. Error: cli_review exited non-zero (all models failed or binary error)

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Gate semantics (pilot phase)

Verdict	Meaning	Blocks merge?
passed	No critical/error findings	No
blocked	CRITICAL or ERROR findings found	Yes
degraded	All models unavailable (infra)	No (pilot)

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