Spike S1: resume/fork/liveness — GO; flood: pause/resume — GO

Demonstrated on CLI 2.1.173: resuming a live session interleaves both
TUIs into one transcript (no lock, no warning) — liveness detection via
registry pid+procStart is mandatory; --fork-session is safe on live
sessions; --resume must run in the session's original cwd ("No
conversation found" otherwise); registry files are cleaned on graceful
exit AND SIGTERM, may be GC'd later after SIGKILL — never reason on
file presence. ANSI-stripped TUI text loses spaces (cursor-positioned
painting) — confirms @xterm/headless for screen parsing.
Flood: 21 MB through node-pty with 10s pause => 0 bytes leaked, no
loss, 4.7 ms echo after flood.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

spikes/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "spikes",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "@homebridge/node-pty-prebuilt-multiarch": "^0.13.1"
+  }
+}