fix(memory): auto-migrate Honcho users to memory provider plugin

When honcho.json or ~/.honcho/config.json exists but memory.provider
is not set, automatically set memory.provider: honcho in config.yaml
and activate the plugin. The plugin reads the same config files, so
all data and credentials are preserved. Zero user action needed.

Persists the migration to config.yaml so it only fires once. Prints
a one-line confirmation in non-quiet mode.

run_agent.py

@@ -1020,8 +1020,10 @@ class AIAgent:
             try:
                 _mem_provider_name = mem_config.get("provider", "") if mem_config else ""
 
-                # Migration notice for users with Honcho configured but not migrated
-                if not _mem_provider_name and not self.quiet_mode:
+                # Auto-migrate: if Honcho was configured but memory.provider
+                # is not set, activate the honcho plugin automatically.
+                # The plugin reads the same config files — zero data loss.
+                if not _mem_provider_name:
                     try:
                         from hermes_constants import get_hermes_home as _ghh2
                         _honcho_paths = [
@@ -1029,10 +1031,18 @@ class AIAgent:
                             Path.home() / ".honcho" / "config.json",
                         ]
                         if any(p.exists() for p in _honcho_paths):
-                            print("  ℹ️  Detected existing Honcho configuration.")
-                            print("     Honcho is now a memory provider plugin.")
-                            print("     Run 'hermes memory setup' to activate it.")
-                            print()
+                            _mem_provider_name = "honcho"
+                            # Persist so this only auto-migrates once
+                            try:
+                                from hermes_cli.config import load_config as _lc, save_config as _sc
+                                _cfg = _lc()
+                                _cfg.setdefault("memory", {})["provider"] = "honcho"
+                                _sc(_cfg)
+                            except Exception:
+                                pass
+                            if not self.quiet_mode:
+                                print("  ✓ Auto-migrated Honcho to memory provider plugin.")
+                                print("    Your config and data are preserved.\n")
                     except Exception:
                         pass