Rename the project to Echo (was fedserv)

Rebrand the daemon and workspace: the binary is now `echo`, every crate
is `echo-*` (`echo-api` and the module crates), Rust imports use
`echo_*`, the gRPC proto is `proto/echo.proto` with package `echo.v1`,
and the log filter, gossip peer-name default, and on-disk store default
(`echo.db.jsonl`) follow. Docs updated throughout. No behaviour change;
crate directories and the config schema are untouched.

modules/nickserv/src/ajoin.rs

@@ -1,5 +1,5 @@
-use fedserv_api::Store;
-use fedserv_api::{Sender, ServiceCtx};
+use echo_api::Store;
+use echo_api::{Sender, ServiceCtx};
 
 // A sane cap so a runaway list can't bloat an account or flood a user on identify.
 const MAX_AJOIN: usize = 25;

modules/nickserv/src/alist.rs

@@ -1,5 +1,5 @@
-use fedserv_api::Store;
-use fedserv_api::{Sender, ServiceCtx};
+use echo_api::Store;
+use echo_api::{Sender, ServiceCtx};
 
 // ALIST: list the channels the sender's account founds or has access on.
 pub fn handle(me: &str, from: &Sender, ctx: &mut ServiceCtx, db: &dyn Store) {

modules/nickserv/src/cert.rs

@@ -1,5 +1,5 @@
-use fedserv_api::{CertError, Store};
-use fedserv_api::{Sender, ServiceCtx};
+use echo_api::{CertError, Store};
+use echo_api::{Sender, ServiceCtx};
 
 // CERT ADD|DEL|LIST <password> [fingerprint]: manage the TLS certificate
 // fingerprints that may log in to your account via SASL EXTERNAL. Each

modules/nickserv/src/confirm.rs

@@ -1,5 +1,5 @@
-use fedserv_api::{CodeKind, Store};
-use fedserv_api::{Sender, ServiceCtx};
+use echo_api::{CodeKind, Store};
+use echo_api::{Sender, ServiceCtx};
 
 // CONFIRM <code>: confirm your account's email with the code you were emailed.
 pub fn handle(me: &str, from: &Sender, args: &[&str], ctx: &mut ServiceCtx, db: &mut dyn Store) {

modules/nickserv/src/drop.rs

@@ -1,6 +1,6 @@
-use fedserv_api::Store;
-use fedserv_api::{Sender, ServiceCtx};
-use fedserv_api::NetView;
+use echo_api::Store;
+use echo_api::{Sender, ServiceCtx};
+use echo_api::NetView;
 
 // DROP <password>: delete your account. Re-authenticates as confirmation, releases
 // and drops the channels you found, and logs you out.

modules/nickserv/src/ghost.rs

@@ -1,6 +1,6 @@
-use fedserv_api::Store;
-use fedserv_api::{Sender, ServiceCtx};
-use fedserv_api::NetView;
+use echo_api::Store;
+use echo_api::{Sender, ServiceCtx};
+use echo_api::NetView;
 
 // GHOST/RECOVER <nick> [password]: rename off a session using a nick you own,
 // either by being identified to its account or giving that account's password.

modules/nickserv/src/glist.rs

@@ -1,5 +1,5 @@
-use fedserv_api::Store;
-use fedserv_api::{Sender, ServiceCtx};
+use echo_api::Store;
+use echo_api::{Sender, ServiceCtx};
 
 // GLIST: list the nicks grouped to your account.
 pub fn handle(me: &str, from: &Sender, ctx: &mut ServiceCtx, db: &dyn Store) {

modules/nickserv/src/group.rs

@@ -1,5 +1,5 @@
-use fedserv_api::Store;
-use fedserv_api::{Sender, ServiceCtx};
+use echo_api::Store;
+use echo_api::{Sender, ServiceCtx};
 
 // GROUP <account> <password>: link your current nick to an existing account, so
 // you can identify to it under this nick too.

modules/nickserv/src/identify.rs

@@ -1,5 +1,5 @@
-use fedserv_api::{human_time, Store};
-use fedserv_api::{Sender, ServiceCtx};
+use echo_api::{human_time, Store};
+use echo_api::{Sender, ServiceCtx};
 
 // IDENTIFY [account] <password>: log in. The account defaults to the current
 // nick, so both the bare-password and account+password forms work.

modules/nickserv/src/info.rs

@@ -1,5 +1,5 @@
-use fedserv_api::{human_time, Priv, Store};
-use fedserv_api::{Sender, ServiceCtx};
+use echo_api::{human_time, Priv, Store};
+use echo_api::{Sender, ServiceCtx};
 
 // INFO [account]: show an account's registration details. The email and other
 // private fields are shown to the account's own owner, or to an oper with the

modules/nickserv/src/lib.rs

@@ -1,6 +1,6 @@
-use fedserv_api::Store;
-use fedserv_api::{Sender, Service, ServiceCtx};
-use fedserv_api::NetView;
+use echo_api::Store;
+use echo_api::{Sender, Service, ServiceCtx};
+use echo_api::NetView;
 
 #[path = "register.rs"]
 mod register;

modules/nickserv/src/logout.rs

@@ -1,4 +1,4 @@
-use fedserv_api::{Sender, ServiceCtx};
+use echo_api::{Sender, ServiceCtx};
 
 // LOGOUT: log out and rename to a guest nick (prefix + a per-logout sequence).
 pub fn handle(me: &str, guest_nick: &str, guest_seq: &mut u32, from: &Sender, ctx: &mut ServiceCtx) {

modules/nickserv/src/noexpire.rs

@@ -1,4 +1,4 @@
-use fedserv_api::{Priv, Sender, ServiceCtx, Store};
+use echo_api::{Priv, Sender, ServiceCtx, Store};
 
 // NOEXPIRE <account> {ON|OFF}: pin an account so inactivity-expiry never drops
 // it (or lift the pin). Oper-only (Priv::Admin) — protecting a record from

modules/nickserv/src/register.rs

@@ -1,5 +1,5 @@
-use fedserv_api::{Sender, ServiceCtx};
-use fedserv_api::RegReply;
+use echo_api::{Sender, ServiceCtx};
+use echo_api::RegReply;
 
 // REGISTER <password> [email]: register the sender's current nick. The engine
 // derives the password off-thread, commits, and answers.

modules/nickserv/src/resetpass.rs

@@ -1,5 +1,5 @@
-use fedserv_api::{CodeKind, Store};
-use fedserv_api::{Sender, ServiceCtx};
+use echo_api::{CodeKind, Store};
+use echo_api::{Sender, ServiceCtx};
 
 // RESETPASS <account>: email a reset code to the address on file.
 // RESETPASS <account> <code> <newpassword>: complete the reset with that code.
@@ -19,7 +19,7 @@ pub fn handle(me: &str, from: &Sender, args: &[&str], ctx: &mut ServiceCtx, db:
                 return;
             };
             let code = db.issue_code(&canonical, CodeKind::Reset);
-            let mail = fedserv_api::email::reset(db.email_brand(), db.email_accent(), db.email_logo(), &canonical, &code);
+            let mail = echo_api::email::reset(db.email_brand(), db.email_accent(), db.email_logo(), &canonical, &code);
             ctx.send_email(email, mail.subject, mail.text, Some(mail.html));
             ctx.notice(me, from.uid, format!("A reset code has been emailed to the address on file for \x02{canonical}\x02."));
         }

modules/nickserv/src/set.rs

@@ -1,5 +1,5 @@
-use fedserv_api::Store;
-use fedserv_api::{Sender, ServiceCtx};
+use echo_api::Store;
+use echo_api::{Sender, ServiceCtx};
 
 // SET PASSWORD <newpassword> | SET EMAIL [address]: change your account settings.
 pub fn handle(me: &str, from: &Sender, args: &[&str], ctx: &mut ServiceCtx, db: &mut dyn Store) {

modules/nickserv/src/suspend.rs

@@ -1,4 +1,4 @@
-use fedserv_api::{parse_duration, NetView, Priv, Sender, ServiceCtx, Store};
+use echo_api::{parse_duration, NetView, Priv, Sender, ServiceCtx, Store};
 use std::time::{SystemTime, UNIX_EPOCH};
 
 // SUSPEND <account> [+expiry] [reason] / UNSUSPEND <account>: freeze or unfreeze

modules/nickserv/src/ungroup.rs

@@ -1,5 +1,5 @@
-use fedserv_api::Store;
-use fedserv_api::{Sender, ServiceCtx};
+use echo_api::Store;
+use echo_api::{Sender, ServiceCtx};
 
 // UNGROUP [nick]: remove a nick grouped to your account (defaults to your current nick).
 pub fn handle(me: &str, from: &Sender, args: &[&str], ctx: &mut ServiceCtx, db: &mut dyn Store) {