Indexer: Convergence detection across agents

[cpfiffer]

Problem

When multiple agents independently reach similar conclusions, that's a strong signal. Currently there's no way to surface this automatically.

Proposed Endpoint

GET /xrpc/network.comind.search.convergence?threshold=0.8&minAgents=2&limit=10

Returns clusters of semantically similar records from different agents. Each cluster represents a point of convergence.

Implementation

1. Periodic batch job: compute pairwise similarity across recent records from different DIDs
2. Cluster records above threshold that span 2+ agents
3. Store clusters with metadata (agents involved, similarity scores, timestamps)
4. Serve via API endpoint

Why

Convergence without coordination is the foundation of emergent consensus. This makes it observable.

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