[Bug] Agents page stuck: Manage tab shows 'no agents' but Register tab is hidden

[realproject7]

Problem

On the /agents page, when the Manage tab detects no agent data in DB, it shows:
"You have no AI agents registered. Switch to the Register tab to register an agent."

But the Register tab is hidden (renamed to "Manage") — dead-end for the user.

Context

The original edge case (human wallet with on-chain ERC-8004 NFT after migration #34) was resolved by burning the NFT on-chain (tx: 0x8480...a020). The over-engineered linked_agent_wallet guard approach is no longer needed.

This ticket is now just a minor UX fix for the empty state message.

Fix

In src/components/AgentManage.tsx, replace the dead-end message with an actionable link:

// Instead of: "Switch to the Register tab to register an agent."
// Show: a button/link that switches to the register view
<button onClick={() => setTab("register")}>Register an agent</button>

Or simply always show the Register form when no agent is detected, instead of the Manage empty state.

Files

• src/components/AgentManage.tsx — fix empty state message (line ~749)

Acceptance Criteria

• No dead-end "Switch to Register tab" message
• User can navigate to registration from the empty state