Phase 1: accounts and sessions

Implements PLAN.md Phase 1. A client can now register, log in, manage its
devices and set its profile; an operator can create accounts and flip the
runtime switches. There are still no rooms and no real /sync.

userapi: accounts, argon2id passwords in PHC format, devices, access and
refresh tokens stored as SHA-256 hashes, account data and the admin flag.
Its storage interface is storage.UserStore, implemented once in sqlstore
with `?` placeholders; the postgres driver supplies a rebind function and
unique-violation recognition rather than keeping a second copy of thirty
statements. Timestamps in these tables are int64 milliseconds, the unit the
Client-Server API uses on the wire.

Client-Server API: register (user-interactive auth with m.login.dummy and
optional registration tokens), register/available, token validity, login
with m.login.password, logout, logout/all, refresh, account/whoami,
capabilities, devices/* with password-gated deletion, profile/*, global and
per-room account data.

GET /sync is a deliberate placeholder: it answers a valid token with an
empty but well-formed response and refuses a revoked one. Phase 1 has no
rooms, so that is the whole truth, and it is what makes session revocation
observable. Phase 4 replaces it with the syncapi.

Auth middleware resolves a bearer token (header or the legacy query
parameter) to a device and user, answering an expired token with the soft
logout the spec asks for. Rate limiting is a token bucket per endpoint class
keyed on the client address, returning M_LIMIT_EXCEEDED with retry_after_ms.

adminapi v1 under /_warp/admin/v1: admin-only auth via a normal Matrix
token, GET/PUT /federation and /registration driving internal/settings and
reporting a config-pinned switch as a 409, GET/POST /users, GET /stats.

warp create-account [--admin] creates the first account straight in the
database, so a new install with registration off has a way in.

Complement is wired up for the federation=off profile: an image meeting its
contract, an entrypoint that configures Warp entirely from WARP_*
variables, and a runner that builds, clones and executes the target set
(TestRegistration, TestLogin, TestDeviceManagement). It has not been run
yet -- there is no container runtime on the development machine -- so the
three tests' assertions were read from the Complement sources and pinned as
httptest tests instead, and CI gained a job that runs the real thing.

Also fixes a .gitignore bug from Phase 0: the unanchored `warp` pattern,
meant for the built binary, also matched the directory server/cmd/warp and
silently excluded the entire command package from the repository. The
binary patterns are now anchored to the repository root, and cmd/warp is
committed for the first time.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

server/internal/setup/server.go

@@ -13,7 +13,9 @@ import (
 	"sync/atomic"
 	"time"
 
+	"github.com/dariuszjaniak/warp/server/internal/adminapi"
 	"github.com/dariuszjaniak/warp/server/internal/buildinfo"
+	"github.com/dariuszjaniak/warp/server/internal/clientapi"
 	"github.com/dariuszjaniak/warp/server/internal/config"
 	"github.com/dariuszjaniak/warp/server/internal/federation"
 	"github.com/dariuszjaniak/warp/server/internal/httputil"
@@ -22,6 +24,7 @@ import (
 	"github.com/dariuszjaniak/warp/server/internal/settings"
 	"github.com/dariuszjaniak/warp/server/internal/storage"
 	_ "github.com/dariuszjaniak/warp/server/internal/storage/drivers" // link in the storage drivers
+	"github.com/dariuszjaniak/warp/server/internal/userapi"
 )
 
 // Server is a configured, not yet listening homeserver.
@@ -35,6 +38,10 @@ type Server struct {
 	federation *federation.Gate
 	signingKey *signing.KeyPair
 
+	users     *userapi.API
+	clientAPI *clientapi.ClientAPI
+	adminAPI  *adminapi.AdminAPI
+
 	handler http.Handler
 
 	// addr is the address Run is listening on; empty until then.
@@ -123,6 +130,47 @@ func New(ctx context.Context, cfg *config.Config, opts Options) (*Server, error)
 		log.Info("federation switch applied", "enabled", snap.FederationEnabled)
 	})
 
+	s.users, err = userapi.New(userapi.Options{
+		ServerName:           cfg.Global.ServerName,
+		Store:                s.db.Users(),
+		AccessTokenLifetime:  cfg.ClientAPI.AccessTokenLifetime,
+		RefreshTokenLifetime: cfg.ClientAPI.RefreshTokenLifetime,
+		Logger:               log,
+	})
+	if err != nil {
+		_ = s.closeDB()
+		return nil, err
+	}
+
+	s.clientAPI, err = clientapi.New(clientapi.Options{
+		ServerName:         cfg.Global.ServerName,
+		ClientBaseURL:      cfg.ClientBaseURL(),
+		Users:              s.users,
+		Settings:           settingsService,
+		Federation:         s.federation,
+		Registration:       cfg.Registration,
+		RateLimit:          cfg.ClientAPI.RateLimit,
+		TrustXForwardedFor: cfg.ClientAPI.TrustXForwardedFor,
+		Logger:             log,
+	})
+	if err != nil {
+		_ = s.closeDB()
+		return nil, err
+	}
+
+	s.adminAPI, err = adminapi.New(adminapi.Options{
+		ServerName: cfg.Global.ServerName,
+		Users:      s.users,
+		Settings:   settingsService,
+		Federation: s.federation,
+		Database:   s.db,
+		Logger:     log,
+	})
+	if err != nil {
+		_ = s.closeDB()
+		return nil, err
+	}
+
 	s.handler = httputil.Chain(s.routes(),
 		httputil.Recoverer,
 		httputil.RequestLogger(log),
@@ -170,6 +218,10 @@ func (s *Server) Settings() *settings.Service { return s.settings }
 // Database exposes the storage handle.
 func (s *Server) Database() storage.Database { return s.db }
 
+// Users exposes the userapi component, which `warp create-account` and the
+// tests use to create accounts without going through HTTP.
+func (s *Server) Users() *userapi.API { return s.users }
+
 // SigningKey returns the server signing key, or nil when it was skipped.
 func (s *Server) SigningKey() *signing.KeyPair { return s.signingKey }