feat(cli): add fusion bin alias for npx + expand README platform/integration story (0.0.2)

- Add `fusion` as a second bin entry alongside `fn`, so `npx @runfusion/fusion`
  and `fusion dashboard` both resolve to the same CLI.
- Root README: new "Multi-node. One board. Every platform." section with
  macOS / Windows / Linux / Web / iOS / Android badges and explicit
  desktop (Electron) + mobile (Capacitor) + web + CLI callouts.
- Root README: new "Ecosystem integrations" section with pi + Hermes logos,
  both labeled experimental.
- Root README: Quick start now leads with `npx @runfusion/fusion dashboard`.
- CLI README mirrors the npx-first install story.
- Bump @runfusion/fusion to 0.0.2, CHANGELOG entry added.

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

packages/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@runfusion/fusion",
-  "version": "0.0.1",
+  "version": "0.0.2",
   "license": "MIT",
   "description": "Fusion CLI: HTTP API server, daemon, dashboard launcher, and task tooling for the Fusion AI coding agent.",
   "homepage": "https://github.com/Runfusion/Fusion#readme",
@@ -12,7 +12,8 @@
     "pi-package"
   ],
   "bin": {
-    "fn": "./dist/bin.js"
+    "fn": "./dist/bin.js",
+    "fusion": "./dist/bin.js"
   },
   "pi": {
     "extensions": [