feat(deno): migrate flatracoon netstack/interface npm → Deno (standards#253) (#21)

Class B (npm-wrapper via Deno). Deletes package.json stub
(rescript + @rescript/core only, zero scripts). Updates deno.json
build|clean|watch tasks to `deno run -A --node-modules-dir=auto
npm:rescript <args>` so rescript compiler resolves @rescript/core via
node_modules without committed package.json.

Refs: standards#253 STEP 3 (smallest-first batch).

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

Author: hyperpolymath

.gitignore

@@ -40,6 +40,13 @@ build/
 /deps/
 package-lock.json
 
+# npm-avoidant (standards#67)
+**/package-lock.json
+bun.lockb
+yarn.lock
+pnpm-lock.yaml
+.npmrc
+
 # Secrets
 .env
 .env.*

netstack/interface/deno.json

@@ -3,9 +3,9 @@
   "version": "0.1.0",
   "exports": "./src/FlatRacoonClient.res.js",
   "tasks": {
-    "build": "rescript build",
-    "clean": "rescript clean",
-    "watch": "rescript build -w",
+    "build": "deno run -A --node-modules-dir=auto npm:rescript build",
+    "clean": "deno run -A --node-modules-dir=auto npm:rescript clean",
+    "watch": "deno run -A --node-modules-dir=auto npm:rescript build -w",
     "test": "deno test --allow-net tests/"
   },
   "compilerOptions": {