refactor: reposition as Docker distribution for mcp-remote

- Replace npm-focused README with Docker-focused documentation
- Move npm documentation to README.npm.md for reference
- Remove npm publish workflow (not needed for Docker distribution)
- Add comprehensive Docker usage examples for all MCP clients
- Document multi-platform support and ghcr.io publishing
- Update workflow documentation to clarify Docker focus

Author: offendingcommit

.github/workflows/check.yml

@@ -1,5 +1,7 @@
 name: Check
 
+# This workflow ensures code quality by running prettier formatting checks
+# and TypeScript type checking on all pull requests
 on:
   pull_request:
     branches:

.github/workflows/docker.yml

@@ -1,5 +1,13 @@
 name: Build and Publish Docker Image
 
+# This workflow builds multi-platform Docker images and publishes them to
+# GitHub Container Registry (ghcr.io). Images are built for linux/amd64 and
+# linux/arm64 platforms.
+#
+# Images are published on:
+# - Push to main branch (tagged as 'main' and 'latest')
+# - Version tags (tagged as version number)
+# - NOT published on pull requests (build only for validation)
 on:
   push:
     branches: