Rename rbos → redbear everywhere, add redbear-info system tool

Replace all 'rbos'/'RBOS' references with 'redbear'/'Red Bear OS'
across the build system, scripts, docs, and configs. Renamed files:
  rbos.ipxe → redbear.ipxe
  assets/rbos-icon.png → assets/redbear-icon.png
  recipes/system/rbos-info → recipes/system/redbear-info

Added redbear-info: a system tool that enumerates all Red Bear OS
custom components, checks runtime availability via scheme paths and
binary presence, and prints status/test info. Supports --verbose,
--json, and --test output modes. Zero external dependencies.

README.md

@@ -1,5 +1,5 @@
 <p align="center">
-<img alt="Red Bear OS" width="200" src="assets/rbos-icon.png">
+<img alt="Red Bear OS" width="200" src="assets/redbear-icon.png">
 </p>
 
 <h1 align="center">Red Bear OS</h1>
@@ -53,7 +53,7 @@ Requires a Linux x86_64 host with Rust nightly, QEMU, and standard build tools.
 ```bash
 make all CONFIG_NAME=redbear-full        # Full desktop + custom drivers
 make all CONFIG_NAME=redbear-minimal     # Minimal server
-make live CONFIG_NAME=redbear-full       # Live ISO (rbos-live.iso)
+make live CONFIG_NAME=redbear-full       # Live ISO (redbear-live.iso)
 make qemu                                # Boot in QEMU
 ```
 
@@ -73,6 +73,10 @@ The `local/` directory is never touched by upstream updates. Recipe patches for
 - [Hardware Support](https://doc.redox-os.org/book/hardware-support.html)
 - [Contributing](CONTRIBUTING.md)
 
+## AI Policy
+
+We welcome contributions made with the assistance of LLMs and AI tools. If you use AI to help write code, documentation, or patches, that's great — we care about the quality of the result, not how it was produced.
+
 ## License
 
 [MIT](./LICENSE) — same as upstream Redox OS.