refactor(restructure): rewrite all imports for hermes_agent package

Rewrite all import statements, patch() targets, sys.modules keys,
importlib.import_module() strings, and subprocess -m references to use
hermes_agent.* paths.

Strip sys.path.insert hacks from production code (rely on editable install).
Update COMPONENT_PREFIXES for logger filtering.
Fix 3 hardcoded getLogger() calls to use __name__.
Update transport and tool registry discovery paths.
Update plugin module path strings.
Add legacy process-name patterns for gateway PID detection.
Add main() to skills_sync for console_script entry point.
Fix _get_bundled_dir() path traversal after move.

Part of #14182, #14183

tests/test_model_picker_scroll.py

@@ -16,8 +16,6 @@ import sys
 import os
 import pytest
 
-sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))
-
 
 # ---------------------------------------------------------------------------
 # Pure scroll-offset logic extracted from _curses_menu for unit testing