Initial Matrix component package

.npmrc

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+registry=https://registry.npmjs.org/
+@open-matrix:registry=https://registry.hivecast.ai/api/packages/open-matrix/npm/
+@matrix:registry=https://registry.hivecast.ai/api/packages/open-matrix/npm/
+@omega:registry=https://registry.hivecast.ai/api/packages/open-matrix/npm/
+@hivecast-proof-example-test:registry=https://registry.hivecast.ai/api/packages/hivecast-proof-example-test/npm/

index.js

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+class R3bProofComponent20260707215243Component extends MatrixActorHtmlElement {
+  static accepts = {
+    setText: {},
+  };
+
+  static emits = { changed: {} };
+
+  constructor() {
+    super();
+    this.state = { text: "R3b Proof Component 20260707215243" };
+  }
+
+  render(state = this.state) {
+    return `<section class="component-shell"><strong>${state.text}</strong></section>`;
+  }
+
+  onSetText(payload = {}) {
+    this.state = { ...this.state, text: String(payload.text ?? "") };
+    this.requestRender?.();
+    this.emit?.("changed", { text: this.state.text });
+    return { ok: true, text: this.state.text };
+  }
+}

matrix.package.json

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+{
+  "name": "@hivecast-proof-example-test/r3b-proof-component-20260707215243",
+  "version": "1.0.0",
+  "description": "Run 3 proof component package",
+  "artifact": {
+    "kind": "component",
+    "lifecycle": "NAMES-PENDING(R-B): component package artifact"
+  },
+  "runtime": {
+    "language": "javascript",
+    "entry": "index.js"
+  },
+  "rendererProvider": {
+    "kind": "matrix-actor-html-element",
+    "entry": "index.js",
+    "export": "Component"
+  },
+  "components": [
+    {
+      "type": "R3bProofComponent20260707215243Component",
+      "export": "Component",
+      "mount": "r3b-proof-component-20260707215243",
+      "surface": "dom",
+      "accepts": [
+        "setText"
+      ],
+      "emits": [],
+      "tracks": [],
+      "interfaces": [],
+      "intents": [],
+      "description": "Run 3 proof component package"
+    }
+  ],
+  "busAccess": {
+    "imports": [],
+    "exports": []
+  },
+  "permissions": {
+    "fsPolicy": "none"
+  }
+}

package.json

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+{
+  "name": "@hivecast-proof-example-test/r3b-proof-component-20260707215243",
+  "version": "1.0.0",
+  "type": "module",
+  "main": "index.js",
+  "files": [
+    "index.js",
+    "matrix.package.json"
+  ],
+  "matrix": true
+}