Release 0.1.0: MIT license, changelog, multi-arch Docker image without CLI builds

- LICENSE (MIT), CHANGELOG for 0.1.0, README overhaul
- docker-compose.release.yml pulling the registry image
- Dockerfile cross-compiles the server with cargo-zigbuild for amd64 and arm64;
  the terminal client is no longer built into the image
- Server, install script and settings point to a source install of the
  terminal client when no prebuilt binaries are available (/info: cli_builds)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/src/i18n/en.ts

@@ -390,6 +390,7 @@ export const en = {
   "cli.title": "Terminal client",
   "cli.intro": "Work with CodeCraft in your terminal like with Claude Code: the agent edits files and runs commands on your machine, while models, modes and rules come from this server (costs show up in your statistics). It can also run without a server using your own API keys.",
   "cli.step1": "Install (Linux, x86_64 and arm64):",
+  "cli.step1Source": "Install from source (needs Rust; this server has no prebuilt binaries):",
   "cli.step2": "Sign in with your CodeCraft account:",
   "cli.step3": "Start it in a project folder with `codecraft`. Inside: /help, /model, /mode, Shift+Tab switches the mode, @ adds files. `codecraft update` updates it.",
   "cli.downloads": "Direct downloads:",