feat: add 'hermes claw migrate' command + migration docs

- Add hermes_cli/claw.py with full CLI migration handler:
  - hermes claw migrate (interactive migration with confirmation)
  - --dry-run, --preset, --overwrite, --skill-conflict flags
  - --source for custom OpenClaw path
  - --yes to skip confirmation
  - Clean formatted output matching setup wizard style

- Fix Python 3.11+ @dataclass compatibility bug in dynamic module loading:
  - Register module in sys.modules before exec_module()
  - Fixes both setup.py (PR #981) and new claw.py

- Add 16 tests in tests/hermes_cli/test_claw.py covering:
  - Script discovery (project root, installed, missing)
  - Command routing
  - Dry-run, execute, cancellation, error handling
  - Preset/secrets behavior, report formatting

- Documentation updates:
  - README.md: Add 'hermes claw migrate' to Getting Started, new Migration section
  - docs/migration/openclaw.md: Full migration guide with all options
  - SKILL.md: Add CLI Command section at top of openclaw-migration skill

hermes_cli/main.py

@@ -22,6 +22,8 @@ Usage:
     hermes update              # Update to latest version
     hermes uninstall           # Uninstall Hermes Agent
     hermes sessions browse     # Interactive session picker with search
+    hermes claw migrate        # Migrate from OpenClaw to Hermes
+    hermes claw migrate --dry-run  # Preview migration without changes
 """
 
 import argparse
@@ -2683,6 +2685,69 @@ For more help on a command:
 
     insights_parser.set_defaults(func=cmd_insights)
 
+    # =========================================================================
+    # claw command (OpenClaw migration)
+    # =========================================================================
+    claw_parser = subparsers.add_parser(
+        "claw",
+        help="OpenClaw migration tools",
+        description="Migrate settings, memories, skills, and API keys from OpenClaw to Hermes"
+    )
+    claw_subparsers = claw_parser.add_subparsers(dest="claw_action")
+
+    # claw migrate
+    claw_migrate = claw_subparsers.add_parser(
+        "migrate",
+        help="Migrate from OpenClaw to Hermes",
+        description="Import settings, memories, skills, and API keys from an OpenClaw installation"
+    )
+    claw_migrate.add_argument(
+        "--source",
+        help="Path to OpenClaw directory (default: ~/.openclaw)"
+    )
+    claw_migrate.add_argument(
+        "--dry-run",
+        action="store_true",
+        help="Preview what would be migrated without making changes"
+    )
+    claw_migrate.add_argument(
+        "--preset",
+        choices=["user-data", "full"],
+        default="full",
+        help="Migration preset (default: full). 'user-data' excludes secrets"
+    )
+    claw_migrate.add_argument(
+        "--overwrite",
+        action="store_true",
+        help="Overwrite existing files (default: skip conflicts)"
+    )
+    claw_migrate.add_argument(
+        "--migrate-secrets",
+        action="store_true",
+        help="Include allowlisted secrets (TELEGRAM_BOT_TOKEN, API keys, etc.)"
+    )
+    claw_migrate.add_argument(
+        "--workspace-target",
+        help="Absolute path to copy workspace instructions into"
+    )
+    claw_migrate.add_argument(
+        "--skill-conflict",
+        choices=["skip", "overwrite", "rename"],
+        default="skip",
+        help="How to handle skill name conflicts (default: skip)"
+    )
+    claw_migrate.add_argument(
+        "--yes", "-y",
+        action="store_true",
+        help="Skip confirmation prompts"
+    )
+
+    def cmd_claw(args):
+        from hermes_cli.claw import claw_command
+        claw_command(args)
+
+    claw_parser.set_defaults(func=cmd_claw)
+
     # =========================================================================
     # version command
     # =========================================================================