[Bug] Fuel node reports healthy status but provides no verifiable proof of active network participation

[maslitti]

Expected behavior

When the node is running correctly, operators should be able to verify that:

• the node is actively participating in the network
• network activity (blocks, peers, messages, or tasks) is progressing
• the node is being counted by the protocol or network
• the node is eligible for incentives, rewards, or snapshots

This information should be observable through metrics, APIs, logs, or documented verification steps.

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Actual behavior

Currently:

• the node process runs normally
• health checks report OK
• logs show no critical or fatal errors

However:

• no metrics expose active network participation
• no API endpoint confirms whether the node is being counted by the network
• logs do not confirm successful participation events
• operators cannot distinguish an actively participating node from an inactive or uncounted one

As a result, the node may appear healthy while not being verifiably active or recognized by the network.

This makes it impossible for operators to independently verify correct configuration or incentive eligibility.