node: Make node aliases required

This is a fairly substantial change, which adds a new configuration file
to the user's `$RAD_HOME` that includes node configuration, including
the alias, and also makes node aliases required.

When running `rad auth`, the user is now prompted for an alias, which
defaults to `$USER`.

When running `rad self`, the alias is now shown.

If the user runs radicle without a config file, the defaults are loaded,
and `$USER` is used as the alias.

radicle-httpd/src/api/json.rs

@@ -14,7 +14,7 @@ use radicle::cob::thread;
 use radicle::cob::thread::CommentId;
 use radicle::cob::{ActorId, Author, Reaction, Timestamp};
 use radicle::git::RefString;
-use radicle::node::AliasStore;
+use radicle::node::{Alias, AliasStore};
 use radicle::prelude::NodeId;
 use radicle::storage::{git, refs, ReadRepository};
 use radicle_surf::blob::Blob;
@@ -146,7 +146,7 @@ pub(crate) fn patch(
 }
 
 /// Returns JSON for an `author` and fills in `alias` when present.
-fn author(author: &Author, alias: Option<String>) -> Value {
+fn author(author: &Author, alias: Option<Alias>) -> Value {
     match alias {
         Some(alias) => json!({
             "id": author.id,
@@ -157,7 +157,7 @@ fn author(author: &Author, alias: Option<String>) -> Value {
 }
 
 /// Returns JSON for a patch `Merge` and fills in `alias` when present.
-fn merge(merge: &Merge, nid: &NodeId, alias: Option<String>) -> Value {
+fn merge(merge: &Merge, nid: &NodeId, alias: Option<Alias>) -> Value {
     match alias {
         Some(alias) => json!({
             "author": {
@@ -180,7 +180,7 @@ fn merge(merge: &Merge, nid: &NodeId, alias: Option<String>) -> Value {
 }
 
 /// Returns JSON for a patch `Review` and fills in `alias` when present.
-fn review(nid: &NodeId, alias: Option<String>, review: &Review) -> Value {
+fn review(nid: &NodeId, alias: Option<Alias>, review: &Review) -> Value {
     match alias {
         Some(alias) => json!({
             "author": {

radicle-httpd/src/test.rs

@@ -16,9 +16,11 @@ use radicle::crypto::ssh::keystore::MemorySigner;
 use radicle::crypto::ssh::Keystore;
 use radicle::crypto::{KeyPair, Seed, Signer};
 use radicle::git::{raw as git2, RefString};
+use radicle::node;
 use radicle::node::address as AddressStore;
 use radicle::node::routing as RoutingStore;
 use radicle::node::tracking::store as TrackingStore;
+use radicle::profile;
 use radicle::profile::Home;
 use radicle::storage::ReadStorage;
 use radicle::Storage;
@@ -63,6 +65,9 @@ pub fn profile(home: &Path, seed: [u8; 32]) -> radicle::Profile {
         storage,
         keystore,
         public_key: keypair.pk.into(),
+        config: profile::Config {
+            node: node::Config::new(node::Alias::new("seed")),
+        },
     }
 }