feat(tui): add usage overlay and sidebar for displaying usage statistics and tasks

feat(tui): implement status bar with connection and turn state indicators
feat(tui): create workflow panel for agent status and progress visualization
feat(web): introduce web frontend interface with static file serving
feat(ws): add WebSocket interface for real-time communication and session management

apps/infrastructure/src/workflow/hive_mind/synthesis.rs

@@ -0,0 +1,38 @@
+//! Consensus synthesis — reconciles multiple node outputs into one assessment.
+
+use anyhow::Result;
+use tracing::info;
+
+use crate::tools::ToolCtx;
+use crate::workflow::hive_mind::types::NodeOutput;
+
+/// Synthesize a consensus from all node outputs.
+///
+/// Flow: combine node outputs → return consensus text.
+/// Uses simple concatenation-based synthesis (avoids LLM call dependency).
+pub async fn synthesize_consensus(
+    nodes: &[NodeOutput],
+    _tool_ctx: &ToolCtx,
+) -> Result<String> {
+    info!("Synthesizing consensus from {} nodes", nodes.len());
+
+    let mut combined = String::new();
+    for node in nodes {
+        combined.push_str(&format!(
+            "\n## {} — {}\n\n{}\n",
+            node.id, node.directive, node.output
+        ));
+    }
+
+    Ok(format!(
+        "# Consensus Synthesis\n\
+         Nodes synthesized: {}\n\n\
+         ## Summary\n\
+         The following node outputs were collected:\n\
+         {}\n\n\
+         ## Key Findings\n\
+         Review the individual node outputs above for detailed findings.",
+        nodes.len(),
+        combined
+    ))
+}