feat: P5.5 dev inject + adapter-inspector demo + adapter smoke (P5 complete)

Dev-only POST /v1/dev/webhook/:type signs+injects a sample payload. apps/adapter-
inspector (Vite): inbound raw events + outbound commands/attempts, simulate-inbound
+ test-send buttons. smoke-adapter proves signed->normalized->interaction, bad-sig
401, sandboxed outbound (no network). 55 tests; all 4 smokes pass; boundary enforced.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/adapter-inspector/vite.config.ts

@@ -0,0 +1,7 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+
+export default defineConfig({
+  plugins: [react()],
+  server: { port: 5175 },
+});