docs: add minimal READMEs for freenet and fdev crates (#1964)

Co-authored-by: Claude <noreply@anthropic.com>

Author: sanity

crates/core/Cargo.toml

@@ -7,6 +7,7 @@ publish = true
 description = "Freenet core software"
 license-file = "LICENSE.md"
 repository = "https://github.com/freenet/freenet-core"
+readme = "README.md"
 
 [[bin]]
 name = "freenet"

crates/core/README.md

@@ -0,0 +1,29 @@
+# Freenet
+
+Freenet is a decentralized, peer-to-peer platform that transforms users' computers into a resilient, distributed platform on which anyone can build decentralized services.
+
+This is the core Freenet software that powers the network.
+
+## Resources
+
+- **Website**: [freenet.org](https://freenet.org/)
+- **GitHub**: [github.com/freenet/freenet-core](https://github.com/freenet/freenet-core)
+- **Documentation**: [GitHub README](https://github.com/freenet/freenet-core#readme)
+- **API Docs**: [docs.rs/freenet](https://docs.rs/freenet)
+- **Community**: [Matrix chat](https://matrix.to/#/#freenet:matrix.org)
+
+## Installation
+
+```bash
+cargo install freenet
+```
+
+For detailed build instructions and development setup, see the [GitHub repository](https://github.com/freenet/freenet-core).
+
+## License
+
+Licensed under either:
+- Apache License, Version 2.0
+- MIT License
+
+at your option.

crates/fdev/Cargo.toml

@@ -6,7 +6,8 @@ rust-version = "1.80"
 publish = true
 description = "Freenet development tool"
 license-file = "LICENSE.md"
-repository = "https://github.com/freenet/freenet"
+repository = "https://github.com/freenet/freenet-core"
+readme = "README.md"
 
 [dependencies]
 bytesize = "2.0"