feat(fleet): inject persona contract at launch (A3b) (#664)

packages/mosaic/src/commands/launch.ts

@@ -20,6 +20,7 @@ import { homedir } from 'node:os';
 import { join, dirname } from 'node:path';
 import type { Command } from 'commander';
 import { readFleetCommsBlock } from '../fleet/comms-onboarding.js';
+import { readPersonaContractBlock } from '../fleet/persona-contract.js';
 
 const MOSAIC_HOME = process.env['MOSAIC_HOME'] ?? join(homedir(), '.config', 'mosaic');
 
@@ -384,6 +385,16 @@ For required push/merge/issue-close/release actions, execute without routine con
   // Runtime-specific contract
   parts.push('\n\n# Runtime-Specific Contract\n\n' + readFileSync(runtimeFile, 'utf-8'));
 
+  // Persona contract (A3b): when this agent was spawned with a class
+  // (MOSAIC_AGENT_CLASS, exported into the pane env by A3a), inject its resolved
+  // role contract so its identity (mandate + boundaries) is resident from the
+  // first turn. Override-aware via the persona resolver: a user-customized
+  // persona in fleet/roles.local/ wins over the baseline (AC-NS-7 launch proof).
+  // Placed BEFORE fleet comms: identity first, then how-to-reach-peers. No-ops
+  // silently when the class is unset/unknown (mirrors the comms block).
+  const persona = readPersonaContractBlock(mosaicHome, process.env['MOSAIC_AGENT_CLASS']);
+  if (persona) parts.push('\n\n' + persona);
+
   // Fleet onboarding: when this is a spawned fleet agent (MOSAIC_AGENT_NAME set
   // and present in the roster), inject a comms cheat-sheet + peer roster so it
   // knows how to reach the orchestrator and its peers from its first turn.