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/reference_data/archive_surface_snapshot.json

@@ -0,0 +1,63 @@
+{
+  "archive_root": "archive/claude_code_ts_snapshot/src",
+  "root_files": [
+    "QueryEngine.ts",
+    "Task.ts",
+    "Tool.ts",
+    "commands.ts",
+    "context.ts",
+    "cost-tracker.ts",
+    "costHook.ts",
+    "dialogLaunchers.tsx",
+    "history.ts",
+    "ink.ts",
+    "interactiveHelpers.tsx",
+    "main.tsx",
+    "projectOnboardingState.ts",
+    "query.ts",
+    "replLauncher.tsx",
+    "setup.ts",
+    "tasks.ts",
+    "tools.ts"
+  ],
+  "root_dirs": [
+    "assistant",
+    "bootstrap",
+    "bridge",
+    "buddy",
+    "cli",
+    "commands",
+    "components",
+    "constants",
+    "context",
+    "coordinator",
+    "entrypoints",
+    "hooks",
+    "ink",
+    "keybindings",
+    "memdir",
+    "migrations",
+    "moreright",
+    "native-ts",
+    "outputStyles",
+    "plugins",
+    "query",
+    "remote",
+    "schemas",
+    "screens",
+    "server",
+    "services",
+    "skills",
+    "state",
+    "tasks",
+    "tools",
+    "types",
+    "upstreamproxy",
+    "utils",
+    "vim",
+    "voice"
+  ],
+  "total_ts_like_files": 1902,
+  "command_entry_count": 207,
+  "tool_entry_count": 184
+}