Replace OpenCode harness with Hermes, remove workspace dependency, and move vocabulary/corrections to app folder

vocabulary.py

@@ -82,6 +82,11 @@ class Vocabulary:
         corrections_file: Path | None = None,
         limit: int = MAX_TERMS,
     ):
+        app_dir = Path(__file__).parent
+        project_dir = project_dir or app_dir
+        vocabulary_file = vocabulary_file or (app_dir / "vocabulary.txt")
+        corrections_file = corrections_file or (app_dir / "corrections.txt")
+
         self._limit = limit
         self._user: list[str] = []
         self._project: list[str] = []
@@ -94,7 +99,7 @@ class Vocabulary:
         if corrections_file and corrections_file.exists():
             self._corrections = _read_corrections(corrections_file)
             logger.debug(f"Vocabulary: {len(self._corrections)} repair rules")
-        if project_dir:
+        if project_dir and project_dir.exists():
             self._project = _terms_from_project(project_dir)
 
     def add_terms(self, terms: list[str]):