Improve vetoed opportunity notifications

[Pigbibi]

Summary

• surface vetoed TACO/panic opportunities in market_regime_control notifications without changing position-control permissions
• rewrite manual-review notifications around situation and suggested action, hiding internal route/veto/governance codes from user-facing copy
• document plugin vs strategy-side position-control permission boundaries

Verification

• timeout 120s env PYTHONPATH=/home/ubuntu/Projects/QuantStrategyPlugins/src uv run --no-project --with pandas --with pytest pytest -q
• timeout 120s uv run --no-project --with ruff ruff check .

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Let TACO reach the arbiter for veto notices

This only disables the price-crisis guard for the panic-reversal component. The TACO component above is still built from the original plugin_config, while build_taco_rebound_shadow_signal defaults suppress_when_price_crisis_guard_active=True; on a crisis/macro de-risking day with an otherwise valid TACO rebound, TACO is downgraded to watch/no_action before build_market_regime_control_signal can add it to notification.vetoed_opportunities. That means the new vetoed-opportunity notification path still won't surface vetoed TACO opportunities in the same guarded contexts where panic reversal now works.

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