feat(runtime): script-driven reflex daemon + Ink TUI dashboard

Pure-Pi runtime had three failure modes in practice:
  - slow: 20-60s per decision because LLM was in the hot path
  - expensive: every tick (defend, eat, idle) paid for a reasoning pass
  - invisible: required tmux capture-pane to know what the bot was doing

New runtime/ layer is a long-running Node daemon that owns the MC
connection, ticks a priority-ordered reflex chain (defend > eat > sleep
> idle) with NO LLM in the hot path, and exposes status + commands over
a Unix-socket IPC. tui/ is an Ink dashboard that attaches over IPC and
can detach freely — multiple TUI clients can connect at once.

Pi/Codex are still available, but as on-demand escalation: TUI hotkey
'a' spawns `pi -p "<prompt>"` as a subprocess and streams stdout into
the dashboard. The self-improvement loop (proposals → operator approval
→ Pi-driven patch → hot reload) is documented in docs/runtime.md but
not yet wired.

Reflex bodies are stubs today — they log decisions but don't drive
Mineflayer actions yet. The priority chain, IPC contract, and TUI are
fully working; subsequent commits will fill in defend/eat/sleep bodies
and wire automatic escalation.

Run with `npm run bot` + `npm run tui`. Pi-only fallback stays at
`npm run agent`.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

package.json

@@ -10,10 +10,14 @@
   },
   "scripts": {
     "agent": "pi",
-    "agent:resume": "pi -c"
+    "agent:resume": "pi -c",
+    "bot": "node runtime/bot.js",
+    "tui": "tsx tui/tui.tsx"
   },
   "dependencies": {
     "dotenv": "^16.4.5",
+    "ink": "^7.0.4",
+    "ink-text-input": "^6.0.0",
     "minecraft-data": "^3.110.2",
     "mineflayer": "^4.37.1",
     "mineflayer-armor-manager": "^2.0.1",
@@ -23,6 +27,7 @@
     "mineflayer-pvp": "^1.3.2",
     "mineflayer-tool": "^1.2.0",
     "prismarine-item": "^1.18.0",
+    "react": "^19.2.6",
     "vec3": "^0.2.0"
   },
   "repository": {
@@ -32,5 +37,9 @@
   "bugs": {
     "url": "https://github.com/xmatic-squad/pepa-pi-bot/issues"
   },
-  "homepage": "https://github.com/xmatic-squad/pepa-pi-bot#readme"
+  "homepage": "https://github.com/xmatic-squad/pepa-pi-bot#readme",
+  "devDependencies": {
+    "@types/react": "^19.2.15",
+    "tsx": "^4.22.3"
+  }
 }