Make the repository's primary source tree genuinely Python

The old tracked TypeScript snapshot has been removed from the repository history and the root  directory is now a Python porting workspace. README and tests now describe and verify the Python-first layout instead of treating the exposed snapshot as the active source tree.

A local archive can still exist outside Git, but the tracked repository now presents only the Python porting surface, related essay context, and OmX workflow artifacts.

Constraint: Tracked history should collapse to a single commit while excluding the archived snapshot from Git
Rejected: Keep the exposed TypeScript tree in tracked history under an archive path | user explicitly wanted only the Python porting repo state in Git
Confidence: medium
Scope-risk: broad
Reversibility: messy
Directive: Keep future tracked additions focused on the Python port itself; do not reintroduce the exposed snapshot into Git history
Tested: python3 -m unittest discover -s tests -v; python3 -m src.main summary; git diff --check
Not-tested: Behavioral parity with the original TypeScript system beyond the current Python workspace surface

src/QueryEngine.py

@@ -0,0 +1,19 @@
+from __future__ import annotations
+
+from .query_engine import QueryEnginePort
+from .runtime import PortRuntime
+
+
+class QueryEngineRuntime(QueryEnginePort):
+    def route(self, prompt: str, limit: int = 5) -> str:
+        matches = PortRuntime().route_prompt(prompt, limit=limit)
+        lines = ['# Query Engine Route', '', f'Prompt: {prompt}', '']
+        if not matches:
+            lines.append('No mirrored command/tool matches found.')
+            return '\n'.join(lines)
+        lines.append('Matches:')
+        lines.extend(f'- [{match.kind}] {match.name} ({match.score}) — {match.source_hint}' for match in matches)
+        return '\n'.join(lines)
+
+
+__all__ = ['QueryEnginePort', 'QueryEngineRuntime']