refactor: move CLI code from cmd/ to internal/cli

Move all non-bootstrapping CLI code to internal/cli package. cmd/neoirc-cli/main.go now contains only minimal bootstrapping that calls cli.Run(). The App struct, UI, command handlers, poll loop, and api client are now in internal/cli/ and internal/cli/api/.
fix: move hashcash PoW from build artifact to JSX source
2026-03-10 03:28:52 -07:00 · 2026-03-10 03:27:16 -07:00 · 2026-03-10 03:27:16 -07:00
31 changed files with 407 additions and 3284 deletions
--- a/README.md
+++ b/README.md
@@ -113,9 +113,8 @@ mechanisms or stuffing data into CTCP.
 Everything else is IRC. `PRIVMSG`, `JOIN`, `PART`, `NICK`, `TOPIC`, `MODE`,
 `KICK`, `353`, `433` — same commands, same semantics. Channels start with `#`.
 Joining a nonexistent channel creates it. Channels disappear when empty. Nicks
-are unique per server. Identity starts with a key — a nick is a display name.
-Accounts are optional: you can create an anonymous session instantly, or
-register with a password for multi-client access to a single session.
+are unique per server. There are no accounts — identity is a key, a nick is a
+display name.

 ### On the resemblance to JSON-RPC

@@ -149,45 +148,16 @@ not arbitrary choices — each one follows from the project's core thesis that
 IRC's command model is correct and only the transport and session management
 need to change.

-### Identity & Sessions — Dual Authentication Model
+### Identity & Sessions — No Accounts

-The server supports two authentication paths: **anonymous sessions** for
-instant access, and **optional account registration** for multi-client access.
-
-#### Anonymous Sessions (No Account Required)
-
-The simplest entry point. No registration, no passwords.
+There are no accounts, no registration, no passwords. Identity is a signing
+key; a nick is just a display name. The two are decoupled.

 - **Session creation**: client sends `POST /api/v1/session` with a desired
  nick → server assigns an **auth token** (64 hex characters of
  cryptographically random bytes) and returns the user ID, nick, and token.
 - The auth token implicitly identifies the client. Clients present it via
  `Authorization: Bearer <token>`.
- Anonymous sessions are ephemeral — when the session expires or the user
-  QUITs, the nick is released and there is no way to reclaim it.
-
-#### Registered Accounts (Optional)
-
-For users who want multi-client access (multiple devices sharing one session):
-
- **Registration**: client sends `POST /api/v1/register` with a nick and
-  password (minimum 8 characters) → server creates a session with the
-  password hashed via bcrypt, and returns the user ID, nick, and auth token.
- **Login**: client sends `POST /api/v1/login` with nick and password →
-  server verifies the password against the stored bcrypt hash and creates a
-  new client token for the existing session. This enables multi-client
-  access: logging in from a new device adds a client to the existing session
-  rather than creating a new one, so channel memberships and message queues
-  are shared. Note: login only works while the session still exists — if all
-  clients have logged out or the user has sent QUIT, the session is deleted
-  and the registration is lost.
- Registered accounts cannot be logged into via `POST /api/v1/session` —
-  that endpoint is for anonymous sessions only.
- Anonymous sessions (created via `/session`) cannot be logged into via
-  `/login` because they have no password set.
-
-#### Common Properties (Both Paths)
-
 - Nicks are changeable via the `NICK` command; the server-assigned user ID is
  the stable identity.
 - Server-assigned IDs — clients do not choose their own IDs.
@@ -195,43 +165,11 @@ For users who want multi-client access (multiple devices sharing one session):
  in the token, no client-side decode. The server is the sole authority on
  token validity.

-**Rationale:** IRC has no accounts. You connect, pick a nick, and talk.
-Anonymous sessions preserve that simplicity — instant access, zero friction.
-But some users want to access the same session from multiple devices without
-a bouncer. Optional registration with password enables multi-client login
-without adding friction for casual users: if you don't want an account,
-don't create one. Note: in the current implementation, both anonymous and
-registered sessions are deleted when the last client disconnects (QUIT or
-logout); registration does not make a session survive all-client
-removal. Identity verification at the message layer via cryptographic
-signatures (see [Security Model](#security-model)) remains independent
-of account registration.
-
-### Hostmask (nick!user@host)
-
-Each session has an IRC-style hostmask composed of three parts:
-
- **nick** — the user's current nick (changes with `NICK` command)
- **username** — an ident-like identifier set at session creation (optional
-  `username` field in the session/register request; defaults to the nick)
- **hostname** — automatically resolved via reverse DNS of the connecting
-  client's IP address at session creation time
- **ip** — the real IP address of the session creator, extracted from
-  `X-Forwarded-For`, `X-Real-IP`, or `RemoteAddr`
-
-Each **client connection** (created at session creation, registration, or login)
-also stores its own **ip** and **hostname**, allowing the server to track the
-network origin of each individual client independently from the session.
-
-The hostmask appears in:
-
- **WHOIS** (`311 RPL_WHOISUSER`) — `params` contains
-  `[nick, username, hostname, "*"]`
- **WHO** (`352 RPL_WHOREPLY`) — `params` contains
-  `[channel, username, hostname, server, nick, flags]`
-
-The hostmask format (`nick!user@host`) is stored for future use in ban matching
-(`+b` mode) and other access control features.
+**Rationale:** IRC has no accounts. You connect, pick a nick, and talk. Adding
+registration, email verification, or OAuth would solve a problem nobody asked
+about and add complexity that drives away casual users. Identity verification
+is handled at the message layer via cryptographic signatures (see
+[Security Model](#security-model)), not at the session layer.

 ### Nick Semantics

@@ -269,12 +207,12 @@ User Session
 └── Client C (token_c, queue_c)
 ```

-**Multi-client via login:** The `POST /api/v1/login` endpoint adds a new
-client to an existing registered session, enabling true multi-client support
-(multiple tokens sharing one nick/session with independent message queues).
-Anonymous sessions created via `POST /api/v1/session` always create a new
-user with a new nick. A future endpoint to "add a client to an existing
-anonymous session" is planned but not yet implemented.
+**Current MVP note:** The current implementation creates a new user (with new
+nick) per `POST /api/v1/session` call. True multi-client (multiple tokens
+sharing one nick/session) is supported by the schema (`client_queues` is keyed
+by user_id, and multiple tokens can point to the same user) but the session
+creation endpoint does not yet support "add a client to an existing session."
+This will be added post-MVP.

 **Rationale:** The fundamental IRC mobile problem is that you can't have your
 phone and laptop connected simultaneously without a bouncer. Server-side
@@ -311,8 +249,8 @@ Key properties:
 - **Ordered**: Queue entries have monotonically increasing IDs. Messages are
  always delivered in order within a client's queue.
 - **No delivery/read receipts** for channel messages. DM receipts are planned.
- **Client output queue depth**: Server-configurable via `QUEUE_MAX_AGE`.
-  Default is 30 days. Entries older than this are pruned.
+- **Queue depth**: Server-configurable via `QUEUE_MAX_AGE`. Default is 48
+  hours. Entries older than this are pruned.

 ### Long-Polling

@@ -389,8 +327,8 @@ needs to revoke a token, change the expiry model, or add/remove claims, JWT
 clients may break or behave incorrectly.

 Opaque tokens are simpler:
- Server generates 32 random bytes → hex-encodes → stores SHA-256 hash
- Client presents the raw token; server hashes and looks it up
+- Server generates 32 random bytes → hex-encodes → stores hash
+- Client presents the token; server looks it up
 - Revocation is a database delete
 - No clock skew issues, no algorithm confusion, no "none" algorithm attacks
 - Token format can change without breaking clients
@@ -417,8 +355,6 @@ The entire read/write loop for a client is two endpoints. Everything else

 ### Session Lifecycle

-#### Anonymous Session
-
 ```
 ┌─ Client ──────────────────────────────────────────────────┐
 │                                                            │
@@ -449,30 +385,6 @@ The entire read/write loop for a client is two endpoints. Everything else
 └────────────────────────────────────────────────────────────┘
 ```

-#### Registered Account
-
-```
-┌─ Client ──────────────────────────────────────────────────┐
-│                                                            │
-│  1. POST /api/v1/register                                  │
-│     {"nick":"alice", "password":"s3cret!!"}                │
-│     → {"id":1, "nick":"alice", "token":"a1b2c3..."}       │
-│     (Session created with bcrypt-hashed password)          │
-│                                                            │
-│  ... use the API normally (JOIN, PRIVMSG, poll, etc.) ...  │
-│                                                            │
-│  (From another device, while session is still active)      │
-│                                                            │
-│  2. POST /api/v1/login                                     │
-│     {"nick":"alice", "password":"s3cret!!"}                │
-│     → {"id":1, "nick":"alice", "token":"d4e5f6..."}       │
-│     (New client added to existing session — channels       │
-│      and message queues are preserved. If all clients      │
-│      have logged out, session no longer exists.)           │
-│                                                            │
-└────────────────────────────────────────────────────────────┘
-```
-
 ### Queue Architecture

 ```
@@ -1002,7 +914,7 @@ the server to the client (never C2S) and use 3-digit string codes in the
 | `252` | RPL_LUSEROP         | On connect or LUSERS command | `{"command":"252","to":"alice","params":["0"],"body":["operator(s) online"]}` |
 | `254` | RPL_LUSERCHANNELS   | On connect or LUSERS command | `{"command":"254","to":"alice","params":["3"],"body":["channels formed"]}` |
 | `255` | RPL_LUSERME         | On connect or LUSERS command | `{"command":"255","to":"alice","body":["I have 5 clients and 1 servers"]}` |
-| `311` | RPL_WHOISUSER       | In response to WHOIS | `{"command":"311","to":"alice","params":["bob","bobident","host.example.com","*"],"body":["bob"]}` |
+| `311` | RPL_WHOISUSER       | In response to WHOIS | `{"command":"311","to":"alice","params":["bob","bob","neoirc","*"],"body":["bob"]}` |
 | `312` | RPL_WHOISSERVER     | In response to WHOIS | `{"command":"312","to":"alice","params":["bob","neoirc"],"body":["neoirc server"]}` |
 | `315` | RPL_ENDOFWHO        | End of WHO response | `{"command":"315","to":"alice","params":["#general"],"body":["End of /WHO list"]}` |
 | `318` | RPL_ENDOFWHOIS      | End of WHOIS response | `{"command":"318","to":"alice","params":["bob"],"body":["End of /WHOIS list"]}` |
@@ -1013,8 +925,8 @@ the server to the client (never C2S) and use 3-digit string codes in the
 | `329` | RPL_CREATIONTIME    | After channel MODE query | `{"command":"329","to":"alice","params":["#general","1709251200"]}` |
 | `331` | RPL_NOTOPIC         | Channel has no topic (on JOIN) | `{"command":"331","to":"alice","params":["#general"],"body":["No topic is set"]}` |
 | `332` | RPL_TOPIC           | On JOIN or TOPIC query | `{"command":"332","to":"alice","params":["#general"],"body":["Welcome!"]}` |
-| `352` | RPL_WHOREPLY        | In response to WHO | `{"command":"352","to":"alice","params":["#general","bobident","host.example.com","neoirc","bob","H"],"body":["0 bob"]}` |
-| `353` | RPL_NAMREPLY        | On JOIN or NAMES query | `{"command":"353","to":"alice","params":["=","#general"],"body":["op1!op1@host1 alice!alice@host2 bob!bob@host3"]}` |
+| `352` | RPL_WHOREPLY        | In response to WHO | `{"command":"352","to":"alice","params":["#general","bob","neoirc","neoirc","bob","H"],"body":["0 bob"]}` |
+| `353` | RPL_NAMREPLY        | On JOIN or NAMES query | `{"command":"353","to":"alice","params":["=","#general"],"body":["@op1 alice bob +voiced1"]}` |
 | `366` | RPL_ENDOFNAMES      | End of NAMES response | `{"command":"366","to":"alice","params":["#general"],"body":["End of /NAMES list"]}` |
 | `372` | RPL_MOTD            | MOTD line | `{"command":"372","to":"alice","body":["Welcome to the server"]}` |
 | `375` | RPL_MOTDSTART       | Start of MOTD | `{"command":"375","to":"alice","body":["- neoirc-server Message of the Day -"]}` |
@@ -1077,24 +989,23 @@ Create a new user session. This is the entry point for all clients.

 If the server requires hashcash proof-of-work (see
 [Hashcash Proof-of-Work](#hashcash-proof-of-work)), the client must include a
-valid stamp in the `pow_token` field of the JSON request body. The required
-difficulty is advertised via `GET /api/v1/server` in the `hashcash_bits` field.
+valid stamp in the `X-Hashcash` request header. The required difficulty is
+advertised via `GET /api/v1/server` in the `hashcash_bits` field.
+
+**Request Headers:**
+
+| Header       | Required | Description |
+|--------------|----------|-------------|
+| `X-Hashcash` | Conditional | Hashcash stamp (required when server has `hashcash_bits` > 0) |

 **Request Body:**
 ```json
-{"nick": "alice", "username": "alice", "pow_token": "1:20:260310:neoirc::3a2f1"}
+{"nick": "alice"}
 ```

 | Field  | Type   | Required | Constraints |
-|------------|--------|-------------|-------------|
+|--------|--------|----------|-------------|
 | `nick` | string | Yes      | 1–32 characters, must be unique on the server |
-| `username` | string | No          | 1–32 characters, IRC ident-style. Defaults to nick if omitted. |
-| `pow_token` | string | Conditional | Hashcash stamp (required when server has `hashcash_bits` > 0) |
-
-The `username` field sets the user portion of the IRC hostmask
-(`nick!user@host`). The hostname is automatically resolved via reverse DNS of
-the connecting client's IP address at session creation time. Together these form
-the hostmask used in WHOIS, WHO, and future ban matching (`+b`).

 **Response:** `201 Created`
 ```json
@@ -1116,8 +1027,7 @@ the hostmask used in WHOIS, WHO, and future ban matching (`+b`).
 | Status | Error | When |
 |--------|-------|------|
 | 400    | `nick must be 1-32 characters` | Empty or too-long nick |
-| 400    | `invalid username format` | Username doesn't match allowed format |
-| 402    | `hashcash proof-of-work required` | Missing `pow_token` field in request body when hashcash is enabled |
+| 402    | `hashcash proof-of-work required` | Missing `X-Hashcash` header when hashcash is enabled |
 | 402    | `invalid hashcash stamp: ...` | Stamp fails validation (wrong bits, expired, reused, etc.) |
 | 409    | `nick already taken` | Another active session holds this nick |

@@ -1125,111 +1035,8 @@ the hostmask used in WHOIS, WHO, and future ban matching (`+b`).
 ```bash
 TOKEN=$(curl -s -X POST http://localhost:8080/api/v1/session \
  -H 'Content-Type: application/json' \
-  -d '{"nick":"alice","pow_token":"1:20:260310:neoirc::3a2f1"}' | jq -r .token)
-echo $TOKEN
-```
-
-### POST /api/v1/register — Register Account
-
-Create a new user session with a password. The password is hashed
-with bcrypt and stored server-side. The password enables login from
-additional clients via `POST /api/v1/login` while the session
-remains active.
-
-**Request Body:**
-```json
-{"nick": "alice", "username": "alice", "password": "mypassword"}
-```
-
-| Field      | Type   | Required | Constraints |
-|------------|--------|----------|-------------|
-| `nick`     | string | Yes      | 1–32 characters, must be unique on the server |
-| `username` | string | No       | 1–32 characters, IRC ident-style. Defaults to nick if omitted. |
-| `password` | string | Yes      | Minimum 8 characters |
-
-The `username` and hostname (auto-resolved via reverse DNS) form the IRC
-hostmask (`nick!user@host`) shown in WHOIS and WHO responses.
-
-**Response:** `201 Created`
-```json
-{
-  "id": 1,
-  "nick": "alice",
-  "token": "494ba9fc0f2242873fc5c285dd4a24fc3844ba5e67789a17e69b6fe5f8c132e3"
-}
-```
-
-| Field   | Type    | Description |
-|---------|---------|-------------|
-| `id`    | integer | Server-assigned user ID |
-| `nick`  | string  | Confirmed nick |
-| `token` | string  | 64-character hex auth token |
-
-**Errors:**
-
-| Status | Error | When |
-|--------|-------|------|
-| 400    | `invalid nick format` | Nick doesn't match allowed format |
-| 400    | `invalid username format` | Username doesn't match allowed format |
-| 400    | `password must be at least 8 characters` | Password too short |
-| 409    | `nick already taken` | Another active session holds this nick |
-
-**curl example:**
-```bash
-TOKEN=$(curl -s -X POST http://localhost:8080/api/v1/register \
-  -H 'Content-Type: application/json' \
-  -d '{"nick":"alice","password":"mypassword"}' | jq -r .token)
-echo $TOKEN
-```
-
-### POST /api/v1/login — Login to Account
-
-Authenticate with a previously registered nick and password. Creates a new
-client token for the existing session, preserving channel memberships and
-message queues. This is how multi-client access works for registered accounts:
-each login adds a new client to the session.
-
-On successful login, the server enqueues MOTD messages and synthetic channel
-state (JOIN + TOPIC + NAMES for each channel the session belongs to) into the
-new client's queue, so the client can immediately restore its UI state.
-
-**Request Body:**
-```json
-{"nick": "alice", "password": "mypassword"}
-```
-
-| Field      | Type   | Required | Constraints |
-|------------|--------|----------|-------------|
-| `nick`     | string | Yes      | Must match a registered account |
-| `password` | string | Yes      | Must match the account's password |
-
-**Response:** `200 OK`
-```json
-{
-  "id": 1,
-  "nick": "alice",
-  "token": "7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f"
-}
-```
-
-| Field   | Type    | Description |
-|---------|---------|-------------|
-| `id`    | integer | Session ID (same as when registered) |
-| `nick`  | string  | Current nick |
-| `token` | string  | New 64-character hex auth token for this client |
-
-**Errors:**
-
-| Status | Error | When |
-|--------|-------|------|
-| 400    | `nick and password required` | Missing nick or password |
-| 401    | `invalid credentials` | Wrong password, nick not found, or account has no password |
-
-**curl example:**
-```bash
-TOKEN=$(curl -s -X POST http://localhost:8080/api/v1/login \
-  -H 'Content-Type: application/json' \
-  -d '{"nick":"alice","password":"mypassword"}' | jq -r .token)
+  -H 'X-Hashcash: 1:20:260310:neoirc::3a2f1' \
+  -d '{"nick":"alice"}' | jq -r .token)
 echo $TOKEN
 ```

@@ -1598,40 +1405,13 @@ Return server metadata. No authentication required.

 ### GET /.well-known/healthcheck.json — Health Check

-Standard health check endpoint. No authentication required. Returns server
-health status and runtime statistics.
+Standard health check endpoint. No authentication required.

 **Response:** `200 OK`
-
 ```json
-{
-  "status": "ok",
-  "now": "2024-01-15T12:00:00.000000000Z",
-  "uptimeSeconds": 3600,
-  "uptimeHuman": "1h0m0s",
-  "version": "0.1.0",
-  "appname": "neoirc",
-  "maintenanceMode": false,
-  "sessions": 42,
-  "clients": 85,
-  "queuedLines": 128,
-  "channels": 7,
-  "connectionsSinceBoot": 200,
-  "sessionsSinceBoot": 150,
-  "messagesSinceBoot": 5000
-}
+{"status": "ok"}
 ```

-| Field                  | Description                                       |
-| ---------------------- | ------------------------------------------------- |
-| `sessions`             | Current number of active sessions                 |
-| `clients`              | Current number of connected clients               |
-| `queuedLines`          | Total entries in client output queues              |
-| `channels`             | Current number of channels                        |
-| `connectionsSinceBoot` | Total client connections since server start        |
-| `sessionsSinceBoot`    | Total sessions created since server start          |
-| `messagesSinceBoot`    | Total PRIVMSG/NOTICE messages sent since server start |
-
 ---

 ## Message Flow
@@ -1816,16 +1596,9 @@ authenticity.
 ### Authentication

 - **Session auth**: Opaque bearer tokens (64 hex chars = 256 bits of entropy).
-  Tokens are hashed (SHA-256) before storage and validated on every request.
- **Anonymous sessions**: `POST /api/v1/session` requires only a nick. No
-  password, instant access. The token is the sole credential.
- **Registered accounts**: `POST /api/v1/register` accepts a nick and password
-  (minimum 8 characters). The password is hashed with bcrypt at the default
-  cost factor and stored alongside the session. `POST /api/v1/login`
-  authenticates against the stored hash and issues a new client token.
- **Password security**: Passwords are never stored in plain text. bcrypt
-  handles salting and key stretching automatically. Anonymous sessions have
-  an empty `password_hash` and cannot be logged into via `/login`.
+  Tokens are stored in the database and validated on every request.
+- **No passwords**: Session creation requires only a nick. The token is the
+  sole credential.
 - **Token security**: Tokens should be treated like session cookies. Transmit
  only over HTTPS in production. If a token is compromised, the attacker has
  full access to the session until QUIT or expiry.
@@ -1973,28 +1746,13 @@ The database schema is managed via embedded SQL migration files in

 **Current tables:**

-#### `sessions`
-| Column         | Type     | Description |
-|----------------|----------|-------------|
-| `id`           | INTEGER  | Primary key (auto-increment) |
-| `uuid`         | TEXT     | Unique session UUID |
-| `nick`         | TEXT     | Unique nick |
-| `username`     | TEXT     | IRC ident/username portion of the hostmask (defaults to nick) |
-| `hostname`     | TEXT     | Reverse DNS hostname of the connecting client IP |
-| `password_hash`| TEXT     | bcrypt hash (empty string for anonymous sessions) |
-| `signing_key`  | TEXT     | Public signing key (empty string if unset) |
-| `away_message` | TEXT     | Away message (empty string if not away) |
-| `created_at`   | DATETIME | Session creation time |
-| `last_seen`    | DATETIME | Last API request time |
-
-#### `clients`
+#### `users`
 | Column      | Type     | Description |
 |-------------|----------|-------------|
 | `id`        | INTEGER  | Primary key (auto-increment) |
-| `uuid`      | TEXT     | Unique client UUID |
-| `session_id`| INTEGER  | FK → sessions.id (cascade delete) |
-| `token`     | TEXT     | Unique auth token (SHA-256 hash of 64 hex chars) |
-| `created_at`| DATETIME | Client creation time |
+| `nick`      | TEXT     | Unique nick |
+| `token`     | TEXT     | Unique auth token (64 hex chars) |
+| `created_at`| DATETIME | Session creation time |
 | `last_seen` | DATETIME | Last API request time |

 #### `channels`
@@ -2046,24 +1804,15 @@ skew issues) and simpler than UUIDs (integer comparison vs. string comparison).

 ### Data Lifecycle

- **Messages**: Pruned automatically when older than `MESSAGE_MAX_AGE`
-  (default 30 days).
- **Client output queue entries**: Pruned automatically when older than
-  `QUEUE_MAX_AGE` (default 30 days).
+- **Messages**: Stored indefinitely in the current implementation. Rotation
+  per `MAX_HISTORY` is planned.
+- **Queue entries**: Stored until pruned. Pruning by `QUEUE_MAX_AGE` is
+  planned.
 - **Channels**: Deleted when the last member leaves (ephemeral).
- **Sessions**: Both anonymous and registered sessions are deleted on `QUIT`
-  or when the last client logs out (`POST /api/v1/logout` with no remaining
-  clients triggers session cleanup). There is no distinction between session
-  types in the cleanup path — `handleQuit` and `cleanupUser` both call
-  `DeleteSession` unconditionally. Idle sessions are automatically expired
-  after `SESSION_IDLE_TIMEOUT`
-  (default 30 days) — the server runs a background cleanup loop that parts
-  idle users from all channels, broadcasts QUIT, and releases their nicks.
- **Clients**: Individual client tokens are deleted on `POST /api/v1/logout`.
-  A session can have multiple clients; removing one doesn't affect others.
-  However, when the last client is removed (via logout), the entire session
-  is deleted — the user is parted from all channels, QUIT is broadcast, and
-  the nick is released.
+- **Users/sessions**: Deleted on `QUIT` or `POST /api/v1/logout`. Idle
+  sessions are automatically expired after `SESSION_IDLE_TIMEOUT` (default
+  24h) — the server runs a background cleanup loop that parts idle users
+  from all channels, broadcasts QUIT, and releases their nicks.

 ---

@@ -2079,9 +1828,9 @@ directory is also loaded automatically via
 | `PORT`             | int     | `8080`                               | HTTP listen port |
 | `DBURL`            | string  | `file:///var/lib/neoirc/state.db?_journal_mode=WAL` | SQLite connection string. For file-based: `file:///path/to/db.db?_journal_mode=WAL`. For in-memory (testing): `file::memory:?cache=shared`. |
 | `DEBUG`            | bool    | `false`                              | Enable debug logging (verbose request/response logging) |
-| `MESSAGE_MAX_AGE`  | string  | `720h`                               | Maximum age of messages as a Go duration string (e.g. `720h`, `24h`). Messages older than this are pruned. Default is 30 days. |
-| `SESSION_IDLE_TIMEOUT` | string | `720h`                           | Session idle timeout as a Go duration string (e.g. `720h`, `24h`). Sessions with no activity for this long are expired and the nick is released. Default is 30 days. |
-| `QUEUE_MAX_AGE`    | string  | `720h`                               | Maximum age of client output queue entries as a Go duration string (e.g. `720h`, `24h`). Entries older than this are pruned. Default is 30 days. |
+| `MAX_HISTORY`      | int     | `10000`                              | Maximum messages retained per channel before rotation (planned) |
+| `SESSION_IDLE_TIMEOUT` | string | `24h`                            | Session idle timeout as a Go duration string (e.g. `24h`, `30m`). Sessions with no activity for this long are expired and the nick is released. |
+| `QUEUE_MAX_AGE`    | int     | `172800`                             | Maximum age of client queue entries in seconds (48h). Entries older than this are pruned (planned). |
 | `MAX_MESSAGE_SIZE` | int     | `4096`                               | Maximum message body size in bytes (planned enforcement) |
 | `LONG_POLL_TIMEOUT`| int     | `15`                                 | Default long-poll timeout in seconds (client can override via query param, server caps at 30) |
 | `MOTD`             | string  | `""`                                 | Message of the day, shown to clients via `GET /api/v1/server` |
@@ -2101,7 +1850,7 @@ SERVER_NAME=My NeoIRC Server
 MOTD=Welcome! Be excellent to each other.
 DEBUG=false
 DBURL=file:///var/lib/neoirc/state.db?_journal_mode=WAL
-SESSION_IDLE_TIMEOUT=720h
+SESSION_IDLE_TIMEOUT=24h
 NEOIRC_HASHCASH_BITS=20
 ```

@@ -2212,21 +1961,11 @@ A complete client needs only four HTTP calls:
 ### Step-by-Step with curl

 ```bash
-# 1a. Create an anonymous session (no account)
+# 1. Create a session
 export TOKEN=$(curl -s -X POST http://localhost:8080/api/v1/session \
  -H 'Content-Type: application/json' \
  -d '{"nick":"testuser"}' | jq -r .token)

-# 1b. Or register an account (multi-client support)
-export TOKEN=$(curl -s -X POST http://localhost:8080/api/v1/register \
-  -H 'Content-Type: application/json' \
-  -d '{"nick":"testuser","password":"mypassword"}' | jq -r .token)
-
-# 1c. Or login to an existing account
-export TOKEN=$(curl -s -X POST http://localhost:8080/api/v1/login \
-  -H 'Content-Type: application/json' \
-  -d '{"nick":"testuser","password":"mypassword"}' | jq -r .token)
-
 # 2. Join a channel
 curl -s -X POST http://localhost:8080/api/v1/messages \
  -H "Authorization: Bearer $TOKEN" \
@@ -2359,11 +2098,9 @@ Clients should handle these message commands from the queue:

 ### Error Handling

- **HTTP 401**: Token expired or invalid. Re-create session (anonymous) or
-  re-login (registered account).
+- **HTTP 401**: Token expired or invalid. Re-create session.
 - **HTTP 404**: Channel or user not found.
- **HTTP 409**: Nick already taken (on session creation, registration, or
-  NICK change).
+- **HTTP 409**: Nick already taken (on session creation or NICK change).
 - **HTTP 400**: Malformed request. Check the `error` field in the response.
 - **Network errors**: Back off exponentially (1s, 2s, 4s, ..., max 30s).

@@ -2380,10 +2117,8 @@ Clients should handle these message commands from the queue:
 4. **DM tab logic**: When you receive a PRIVMSG where `to` is not a channel
   (no `#` prefix), the DM tab should be keyed by the **other** user's nick:
   if `from` is you, use `to`; if `from` is someone else, use `from`.
-5. **Reconnection**: If the poll loop fails with 401, the token is invalid.
-   For anonymous sessions, create a new session. For registered accounts,
-   log in again via `POST /api/v1/login` to get a fresh token on the same
-   session. If it fails with a network error, retry with backoff.
+5. **Reconnection**: If the poll loop fails with 401, the session is gone.
+   Create a new session. If it fails with a network error, retry with backoff.

 ---

@@ -2403,7 +2138,7 @@ account registration, no IP-based rate limits that punish shared networks.
 2. Client computes a hashcash stamp: find a counter value such that the
   SHA-256 hash of the stamp string has the required number of leading zero
   bits.
-3. Client includes the stamp in the `pow_token` field of the JSON request body when creating
+3. Client includes the stamp in the `X-Hashcash` request header when creating
   a session: `POST /api/v1/session`.
 4. Server validates the stamp:
   - Version is `1`
@@ -2460,7 +2195,7 @@ Both the embedded web SPA and the CLI client automatically handle hashcash:

 1. Fetch `GET /api/v1/server` to read `hashcash_bits`
 2. If `hashcash_bits > 0`, compute a valid stamp
-3. Include the stamp in the `pow_token` field of the JSON body on `POST /api/v1/session`
+3. Include the stamp in the `X-Hashcash` header on `POST /api/v1/session`

 The web SPA uses the Web Crypto API (`crypto.subtle.digest`) for SHA-256
 computation with batched parallelism. The CLI client uses Go's `crypto/sha256`.
@@ -2524,8 +2259,8 @@ creating one session pays once and keeps their session.
 ### Post-MVP (Planned)

 - [x] **Hashcash proof-of-work** for session creation (abuse prevention)
- [x] **Client output queue pruning** — delete old client output queue entries per `QUEUE_MAX_AGE`
- [x] **Message rotation** — prune messages older than `MESSAGE_MAX_AGE`
+- [ ] **Queue pruning** — delete old queue entries per `QUEUE_MAX_AGE`
+- [ ] **Message rotation** — enforce `MAX_HISTORY` per channel
 - [ ] **Channel modes** — enforce `+i`, `+m`, `+s`, `+t`, `+n`
 - [ ] **User channel modes** — `+o` (operator), `+v` (voice)
 - [x] **MODE command** — query channel and user modes (set not yet implemented)
@@ -2603,8 +2338,6 @@ neoirc/
 │   │   └── healthcheck.go  # Health check handler
 │   ├── healthcheck/        # Health check logic
 │   │   └── healthcheck.go
-│   ├── stats/              # Runtime statistics (atomic counters)
-│   │   └── stats.go
 │   ├── logger/             # slog-based logging
 │   │   └── logger.go
 │   ├── middleware/          # HTTP middleware (logging, CORS, metrics, auth)
@@ -2656,13 +2389,9 @@ neoirc/
   build a working IRC-style TUI client against this API in an afternoon, the
   API is too complex.

-2. **Accounts optional** — anonymous sessions are instant: pick a nick and
-   talk. No registration, no email verification. The cost of entry is a
-   hashcash proof, not bureaucracy. For users who want multi-client access
-   (multiple devices sharing one session), optional account registration
-   with password is available — but never required. Identity
-   verification at the message layer uses cryptographic signing,
-   independent of account status.
+2. **No accounts** — identity is a signing key, nick is a display name. No
+   registration, no passwords, no email verification. Session creation is
+   instant. The cost of entry is a hashcash proof, not bureaucracy.

 3. **IRC semantics over HTTP** — command names and numeric codes from
   RFC 1459/2812. If you've built an IRC client or bot, you already know the
--- a/cmd/neoircd/main.go
+++ b/cmd/neoircd/main.go
@@ -10,7 +10,6 @@ import (
 	"git.eeqj.de/sneak/neoirc/internal/logger"
 	"git.eeqj.de/sneak/neoirc/internal/middleware"
 	"git.eeqj.de/sneak/neoirc/internal/server"
-	"git.eeqj.de/sneak/neoirc/internal/stats"
 	"go.uber.org/fx"
 )

@@ -36,7 +35,6 @@ func main() {
 			server.New,
 			middleware.New,
 			healthcheck.New,
-			stats.New,
 		),
 		fx.Invoke(func(*server.Server) {}),
 	).Run()
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	github.com/99designs/basicauth-go v0.0.0-20230316000542-bf6f9cbbf0f8
 	github.com/gdamore/tcell/v2 v2.13.8
 	github.com/getsentry/sentry-go v0.42.0
-	github.com/go-chi/chi/v5 v5.2.1
+	github.com/go-chi/chi v1.5.5
 	github.com/go-chi/cors v1.2.2
 	github.com/google/uuid v1.6.0
 	github.com/joho/godotenv v1.5.1
--- a/go.sum
+++ b/go.sum
@@ -18,8 +18,8 @@ github.com/gdamore/tcell/v2 v2.13.8 h1:Mys/Kl5wfC/GcC5Cx4C2BIQH9dbnhnkPgS9/wF3Rl
 github.com/gdamore/tcell/v2 v2.13.8/go.mod h1:+Wfe208WDdB7INEtCsNrAN6O2m+wsTPk1RAovjaILlo=
 github.com/getsentry/sentry-go v0.42.0 h1:eeFMACuZTbUQf90RE8dE4tXeSe4CZyfvR1MBL7RLEt8=
 github.com/getsentry/sentry-go v0.42.0/go.mod h1:eRXCoh3uvmjQLY6qu63BjUZnaBu5L5WhMV1RwYO8W5s=
-github.com/go-chi/chi/v5 v5.2.1 h1:KOIHODQj58PmL80G2Eak4WdvUzjSJSm0vG72crDCqb8=
-github.com/go-chi/chi/v5 v5.2.1/go.mod h1:L2yAIGWB3H+phAw1NxKwWM+7eUH/lU8pOMm5hHcoops=
+github.com/go-chi/chi v1.5.5 h1:vOB/HbEMt9QqBqErz07QehcOKHaWFtuj87tTDVz2qXE=
+github.com/go-chi/chi v1.5.5/go.mod h1:C9JqLr3tIYjDOZpzn+BCuxY8z8vmca43EeMgyZt7irw=
 github.com/go-chi/cors v1.2.2 h1:Jmey33TE+b+rB7fT8MUy1u0I4L+NARQlK6LhzKPSyQE=
 github.com/go-chi/cors v1.2.2/go.mod h1:sSbTewc+6wYHBBCW7ytsFSn836hqM7JxpglAy2Vzc58=
 github.com/go-errors/errors v1.4.2 h1:J6MZopCL4uSllY1OfXM374weqZFFItUbrImctkmUxIA=
--- a/internal/cli/api/client.go
+++ b/internal/cli/api/client.go
@@ -14,7 +14,7 @@ import (
 	"strings"
 	"time"

-	"git.eeqj.de/sneak/neoirc/pkg/irc"
+	"git.eeqj.de/sneak/neoirc/internal/irc"
 )

 const (
@@ -52,7 +52,7 @@ func (client *Client) CreateSession(
 	// Fetch server info to check for hashcash requirement.
 	info, err := client.GetServerInfo()

-	var hashcashStamp string
+	var headers map[string]string

 	if err == nil && info.HashcashBits > 0 {
 		resource := info.Name
@@ -60,13 +60,17 @@ func (client *Client) CreateSession(
 			resource = "neoirc"
 		}

-		hashcashStamp = MintHashcash(info.HashcashBits, resource)
+		stamp := MintHashcash(info.HashcashBits, resource)
+		headers = map[string]string{
+			"X-Hashcash": stamp,
+		}
 	}

-	data, err := client.do(
+	data, err := client.doWithHeaders(
 		http.MethodPost,
 		"/api/v1/session",
-		&SessionRequest{Nick: nick, Hashcash: hashcashStamp},
+		&SessionRequest{Nick: nick},
+		headers,
 	)
 	if err != nil {
 		return nil, err
@@ -278,6 +282,16 @@ func (client *Client) GetServerInfo() (
 func (client *Client) do(
 	method, path string,
 	body any,
+) ([]byte, error) {
+	return client.doWithHeaders(
+		method, path, body, nil,
+	)
+}
+
+func (client *Client) doWithHeaders(
+	method, path string,
+	body any,
+	extraHeaders map[string]string,
 ) ([]byte, error) {
 	var bodyReader io.Reader

@@ -310,6 +324,10 @@ func (client *Client) do(
 		)
 	}

+	for key, val := range extraHeaders {
+		request.Header.Set(key, val)
+	}
+
 	resp, err := client.HTTPClient.Do(request)
 	if err != nil {
 		return nil, fmt.Errorf("http: %w", err)
--- a/internal/cli/api/types.go
+++ b/internal/cli/api/types.go
@@ -5,7 +5,6 @@ import "time"
 // SessionRequest is the body for POST /api/v1/session.
 type SessionRequest struct {
 	Nick string `json:"nick"`
-	Hashcash string `json:"pow_token,omitempty"` //nolint:tagliatelle
 }

 // SessionResponse is the response from session creation.
--- a/internal/cli/app.go
+++ b/internal/cli/app.go
@@ -9,7 +9,7 @@ import (
 	"time"

 	api "git.eeqj.de/sneak/neoirc/internal/cli/api"
-	"git.eeqj.de/sneak/neoirc/pkg/irc"
+	"git.eeqj.de/sneak/neoirc/internal/irc"
 )

 const (
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -38,9 +38,8 @@ type Config struct {
 	MetricsUsername    string
 	Port               int
 	SentryDSN          string
-	MessageMaxAge      string
+	MaxHistory         int
 	MaxMessageSize     int
-	QueueMaxAge        string
 	MOTD               string
 	ServerName         string
 	FederationKey      string
@@ -70,13 +69,12 @@ func New(
 	viper.SetDefault("SENTRY_DSN", "")
 	viper.SetDefault("METRICS_USERNAME", "")
 	viper.SetDefault("METRICS_PASSWORD", "")
-	viper.SetDefault("MESSAGE_MAX_AGE", "720h")
+	viper.SetDefault("MAX_HISTORY", "10000")
 	viper.SetDefault("MAX_MESSAGE_SIZE", "4096")
-	viper.SetDefault("QUEUE_MAX_AGE", "720h")
 	viper.SetDefault("MOTD", defaultMOTD)
 	viper.SetDefault("SERVER_NAME", "")
 	viper.SetDefault("FEDERATION_KEY", "")
-	viper.SetDefault("SESSION_IDLE_TIMEOUT", "720h")
+	viper.SetDefault("SESSION_IDLE_TIMEOUT", "24h")
 	viper.SetDefault("NEOIRC_HASHCASH_BITS", "20")

 	err := viper.ReadInConfig()
@@ -96,9 +94,8 @@ func New(
 		MaintenanceMode:    viper.GetBool("MAINTENANCE_MODE"),
 		MetricsUsername:    viper.GetString("METRICS_USERNAME"),
 		MetricsPassword:    viper.GetString("METRICS_PASSWORD"),
-		MessageMaxAge:      viper.GetString("MESSAGE_MAX_AGE"),
+		MaxHistory:         viper.GetInt("MAX_HISTORY"),
 		MaxMessageSize:     viper.GetInt("MAX_MESSAGE_SIZE"),
-		QueueMaxAge:        viper.GetString("QUEUE_MAX_AGE"),
 		MOTD:               viper.GetString("MOTD"),
 		ServerName:         viper.GetString("SERVER_NAME"),
 		FederationKey:      viper.GetString("FEDERATION_KEY"),
--- a/internal/db/auth.go
+++ b/internal/db/auth.go
@@ -20,12 +20,8 @@ var errNoPassword = errors.New(
 // and returns session ID, client ID, and token.
 func (database *Database) RegisterUser(
 	ctx context.Context,
-	nick, password, username, hostname, remoteIP string,
+	nick, password string,
 ) (int64, int64, string, error) {
-	if username == "" {
-		username = nick
-	}
-
 	hash, err := bcrypt.GenerateFromPassword(
 		[]byte(password), bcryptCost,
 	)
@@ -54,11 +50,10 @@ func (database *Database) RegisterUser(

 	res, err := transaction.ExecContext(ctx,
 		`INSERT INTO sessions
-		 (uuid, nick, username, hostname, ip,
-		  password_hash, created_at, last_seen)
-		 VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
-		sessionUUID, nick, username, hostname,
-		remoteIP, string(hash), now, now)
+		 (uuid, nick, password_hash,
+		  created_at, last_seen)
+		 VALUES (?, ?, ?, ?, ?)`,
+		sessionUUID, nick, string(hash), now, now)
 	if err != nil {
 		_ = transaction.Rollback()

@@ -69,15 +64,12 @@ func (database *Database) RegisterUser(

 	sessionID, _ := res.LastInsertId()

-	tokenHash := hashToken(token)
-
 	clientRes, err := transaction.ExecContext(ctx,
 		`INSERT INTO clients
-		 (uuid, session_id, token, ip, hostname,
+		 (uuid, session_id, token,
 		  created_at, last_seen)
-		 VALUES (?, ?, ?, ?, ?, ?, ?)`,
-		clientUUID, sessionID, tokenHash,
-		remoteIP, hostname, now, now)
+		 VALUES (?, ?, ?, ?, ?)`,
+		clientUUID, sessionID, token, now, now)
 	if err != nil {
 		_ = transaction.Rollback()

@@ -102,7 +94,7 @@ func (database *Database) RegisterUser(
 // client token.
 func (database *Database) LoginUser(
 	ctx context.Context,
-	nick, password, remoteIP, hostname string,
+	nick, password string,
 ) (int64, int64, string, error) {
 	var (
 		sessionID    int64
@@ -145,15 +137,12 @@ func (database *Database) LoginUser(

 	now := time.Now()

-	tokenHash := hashToken(token)
-
 	res, err := database.conn.ExecContext(ctx,
 		`INSERT INTO clients
-		 (uuid, session_id, token, ip, hostname,
+		 (uuid, session_id, token,
 		  created_at, last_seen)
-		 VALUES (?, ?, ?, ?, ?, ?, ?)`,
-		clientUUID, sessionID, tokenHash,
-		remoteIP, hostname, now, now)
+		 VALUES (?, ?, ?, ?, ?)`,
+		clientUUID, sessionID, token, now, now)
 	if err != nil {
 		return 0, 0, "", fmt.Errorf(
 			"create login client: %w", err,
--- a/internal/db/auth_test.go
+++ b/internal/db/auth_test.go
@@ -13,7 +13,7 @@ func TestRegisterUser(t *testing.T) {
 	ctx := t.Context()

 	sessionID, clientID, token, err :=
-		database.RegisterUser(ctx, "reguser", "password123", "", "", "")
+		database.RegisterUser(ctx, "reguser", "password123")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -38,69 +38,6 @@ func TestRegisterUser(t *testing.T) {
 	}
 }

-func TestRegisterUserWithUserHost(t *testing.T) {
-	t.Parallel()
-
-	database := setupTestDB(t)
-	ctx := t.Context()
-
-	sessionID, _, _, err := database.RegisterUser(
-		ctx, "reguhost", "password123",
-		"myident", "example.org", "",
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	info, err := database.GetSessionHostInfo(
-		ctx, sessionID,
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if info.Username != "myident" {
-		t.Fatalf(
-			"expected myident, got %s", info.Username,
-		)
-	}
-
-	if info.Hostname != "example.org" {
-		t.Fatalf(
-			"expected example.org, got %s",
-			info.Hostname,
-		)
-	}
-}
-
-func TestRegisterUserDefaultUsername(t *testing.T) {
-	t.Parallel()
-
-	database := setupTestDB(t)
-	ctx := t.Context()
-
-	sessionID, _, _, err := database.RegisterUser(
-		ctx, "regdefault", "password123", "", "", "",
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	info, err := database.GetSessionHostInfo(
-		ctx, sessionID,
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if info.Username != "regdefault" {
-		t.Fatalf(
-			"expected regdefault, got %s",
-			info.Username,
-		)
-	}
-}
-
 func TestRegisterUserDuplicateNick(t *testing.T) {
 	t.Parallel()

@@ -108,7 +45,7 @@ func TestRegisterUserDuplicateNick(t *testing.T) {
 	ctx := t.Context()

 	regSID, regCID, regToken, err :=
-		database.RegisterUser(ctx, "dupnick", "password123", "", "", "")
+		database.RegisterUser(ctx, "dupnick", "password123")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -118,7 +55,7 @@ func TestRegisterUserDuplicateNick(t *testing.T) {
 	_ = regToken

 	dupSID, dupCID, dupToken, dupErr :=
-		database.RegisterUser(ctx, "dupnick", "other12345", "", "", "")
+		database.RegisterUser(ctx, "dupnick", "other12345")
 	if dupErr == nil {
 		t.Fatal("expected error for duplicate nick")
 	}
@@ -135,7 +72,7 @@ func TestLoginUser(t *testing.T) {
 	ctx := t.Context()

 	regSID, regCID, regToken, err :=
-		database.RegisterUser(ctx, "loginuser", "mypassword", "", "", "")
+		database.RegisterUser(ctx, "loginuser", "mypassword")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -145,7 +82,7 @@ func TestLoginUser(t *testing.T) {
 	_ = regToken

 	sessionID, clientID, token, err :=
-		database.LoginUser(ctx, "loginuser", "mypassword", "", "")
+		database.LoginUser(ctx, "loginuser", "mypassword")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -166,83 +103,6 @@ func TestLoginUser(t *testing.T) {
 	}
 }

-func TestLoginUserStoresClientIPHostname(t *testing.T) {
-	t.Parallel()
-
-	database := setupTestDB(t)
-	ctx := t.Context()
-
-	regSID, regCID, regToken, err := database.RegisterUser(
-		ctx, "loginipuser", "password123",
-		"", "", "10.0.0.1",
-	)
-
-	_ = regSID
-	_ = regCID
-	_ = regToken
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	_, clientID, _, err := database.LoginUser(
-		ctx, "loginipuser", "password123",
-		"10.0.0.99", "newhost.example.com",
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	clientInfo, err := database.GetClientHostInfo(
-		ctx, clientID,
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if clientInfo.IP != "10.0.0.99" {
-		t.Fatalf(
-			"expected client IP 10.0.0.99, got %s",
-			clientInfo.IP,
-		)
-	}
-
-	if clientInfo.Hostname != "newhost.example.com" {
-		t.Fatalf(
-			"expected hostname newhost.example.com, got %s",
-			clientInfo.Hostname,
-		)
-	}
-}
-
-func TestRegisterUserStoresSessionIP(t *testing.T) {
-	t.Parallel()
-
-	database := setupTestDB(t)
-	ctx := t.Context()
-
-	sessionID, _, _, err := database.RegisterUser(
-		ctx, "regipuser", "password123",
-		"ident", "host.local", "172.16.0.5",
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	info, err := database.GetSessionHostInfo(
-		ctx, sessionID,
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if info.IP != "172.16.0.5" {
-		t.Fatalf(
-			"expected session IP 172.16.0.5, got %s",
-			info.IP,
-		)
-	}
-}
-
 func TestLoginUserWrongPassword(t *testing.T) {
 	t.Parallel()

@@ -250,7 +110,7 @@ func TestLoginUserWrongPassword(t *testing.T) {
 	ctx := t.Context()

 	regSID, regCID, regToken, err :=
-		database.RegisterUser(ctx, "wrongpw", "correctpass", "", "", "")
+		database.RegisterUser(ctx, "wrongpw", "correctpass")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -260,7 +120,7 @@ func TestLoginUserWrongPassword(t *testing.T) {
 	_ = regToken

 	loginSID, loginCID, loginToken, loginErr :=
-		database.LoginUser(ctx, "wrongpw", "wrongpass12", "", "")
+		database.LoginUser(ctx, "wrongpw", "wrongpass12")
 	if loginErr == nil {
 		t.Fatal("expected error for wrong password")
 	}
@@ -278,7 +138,7 @@ func TestLoginUserNoPassword(t *testing.T) {

 	// Create anonymous session (no password).
 	anonSID, anonCID, anonToken, err :=
-		database.CreateSession(ctx, "anon", "", "", "")
+		database.CreateSession(ctx, "anon")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -288,7 +148,7 @@ func TestLoginUserNoPassword(t *testing.T) {
 	_ = anonToken

 	loginSID, loginCID, loginToken, loginErr :=
-		database.LoginUser(ctx, "anon", "anything1", "", "")
+		database.LoginUser(ctx, "anon", "anything1")
 	if loginErr == nil {
 		t.Fatal(
 			"expected error for login on passwordless account",
@@ -307,7 +167,7 @@ func TestLoginUserNonexistent(t *testing.T) {
 	ctx := t.Context()

 	loginSID, loginCID, loginToken, err :=
-		database.LoginUser(ctx, "ghost", "password123", "", "")
+		database.LoginUser(ctx, "ghost", "password123")
 	if err == nil {
 		t.Fatal("expected error for nonexistent user")
 	}
--- a/internal/db/errors.go
+++ b/internal/db/errors.go
@@ -1,20 +0,0 @@
-// Package db provides database access and migration management.
-package db
-
-import (
-	"errors"
-
-	"modernc.org/sqlite"
-	sqlite3 "modernc.org/sqlite/lib"
-)
-
-// IsUniqueConstraintError reports whether err is a SQLite
-// unique-constraint violation.
-func IsUniqueConstraintError(err error) bool {
-	var sqliteErr *sqlite.Error
-	if !errors.As(err, &sqliteErr) {
-		return false
-	}
-
-	return sqliteErr.Code() == sqlite3.SQLITE_CONSTRAINT_UNIQUE
-}
--- a/internal/db/queries.go
+++ b/internal/db/queries.go
@@ -3,7 +3,6 @@ package db
 import (
 	"context"
 	"crypto/rand"
-	"crypto/sha256"
 	"database/sql"
 	"encoding/hex"
 	"encoding/json"
@@ -11,7 +10,7 @@ import (
 	"strconv"
 	"time"

-	"git.eeqj.de/sneak/neoirc/pkg/irc"
+	"git.eeqj.de/sneak/neoirc/internal/irc"
 	"github.com/google/uuid"
 )

@@ -32,14 +31,6 @@ func generateToken() (string, error) {
 	return hex.EncodeToString(buf), nil
 }

-// hashToken returns the lowercase hex-encoded SHA-256
-// digest of a plaintext token string.
-func hashToken(token string) string {
-	sum := sha256.Sum256([]byte(token))
-
-	return hex.EncodeToString(sum[:])
-}
-
 // IRCMessage is the IRC envelope for all messages.
 type IRCMessage struct {
 	ID      string          `json:"id"`
@@ -74,40 +65,14 @@ type ChannelInfo struct {
 type MemberInfo struct {
 	ID       int64     `json:"id"`
 	Nick     string    `json:"nick"`
-	Username string    `json:"username"`
-	Hostname string    `json:"hostname"`
 	LastSeen time.Time `json:"lastSeen"`
 }

-// Hostmask returns the IRC hostmask in
-// nick!user@host format.
-func (m *MemberInfo) Hostmask() string {
-	return FormatHostmask(m.Nick, m.Username, m.Hostname)
-}
-
-// FormatHostmask formats a nick, username, and hostname
-// into a standard IRC hostmask string (nick!user@host).
-func FormatHostmask(nick, username, hostname string) string {
-	if username == "" {
-		username = nick
-	}
-
-	if hostname == "" {
-		hostname = "*"
-	}
-
-	return nick + "!" + username + "@" + hostname
-}
-
 // CreateSession registers a new session and its first client.
 func (database *Database) CreateSession(
 	ctx context.Context,
-	nick, username, hostname, remoteIP string,
+	nick string,
 ) (int64, int64, string, error) {
-	if username == "" {
-		username = nick
-	}
-
 	sessionUUID := uuid.New().String()
 	clientUUID := uuid.New().String()

@@ -127,11 +92,9 @@ func (database *Database) CreateSession(

 	res, err := transaction.ExecContext(ctx,
 		`INSERT INTO sessions
-		 (uuid, nick, username, hostname, ip,
-		  created_at, last_seen)
-		 VALUES (?, ?, ?, ?, ?, ?, ?)`,
-		sessionUUID, nick, username, hostname,
-		remoteIP, now, now)
+		 (uuid, nick, created_at, last_seen)
+		 VALUES (?, ?, ?, ?)`,
+		sessionUUID, nick, now, now)
 	if err != nil {
 		_ = transaction.Rollback()

@@ -142,15 +105,12 @@ func (database *Database) CreateSession(

 	sessionID, _ := res.LastInsertId()

-	tokenHash := hashToken(token)
-
 	clientRes, err := transaction.ExecContext(ctx,
 		`INSERT INTO clients
-		 (uuid, session_id, token, ip, hostname,
+		 (uuid, session_id, token,
 		  created_at, last_seen)
-		 VALUES (?, ?, ?, ?, ?, ?, ?)`,
-		clientUUID, sessionID, tokenHash,
-		remoteIP, hostname, now, now)
+		 VALUES (?, ?, ?, ?, ?)`,
+		clientUUID, sessionID, token, now, now)
 	if err != nil {
 		_ = transaction.Rollback()

@@ -183,8 +143,6 @@ func (database *Database) GetSessionByToken(
 		nick      string
 	)

-	tokenHash := hashToken(token)
-
 	err := database.conn.QueryRowContext(
 		ctx,
 		`SELECT s.id, c.id, s.nick
@@ -192,7 +150,7 @@ func (database *Database) GetSessionByToken(
 		 INNER JOIN sessions s
 		   ON s.id = c.session_id
 		 WHERE c.token = ?`,
-		tokenHash,
+		token,
 	).Scan(&sessionID, &clientID, &nick)
 	if err != nil {
 		return 0, 0, "", fmt.Errorf(
@@ -238,66 +196,6 @@ func (database *Database) GetSessionByNick(
 	return sessionID, nil
 }

-// SessionHostInfo holds the username, hostname, and IP
-// for a session.
-type SessionHostInfo struct {
-	Username string
-	Hostname string
-	IP       string
-}
-
-// GetSessionHostInfo returns the username, hostname,
-// and IP for a session.
-func (database *Database) GetSessionHostInfo(
-	ctx context.Context,
-	sessionID int64,
-) (*SessionHostInfo, error) {
-	var info SessionHostInfo
-
-	err := database.conn.QueryRowContext(
-		ctx,
-		`SELECT username, hostname, ip
-		 FROM sessions WHERE id = ?`,
-		sessionID,
-	).Scan(&info.Username, &info.Hostname, &info.IP)
-	if err != nil {
-		return nil, fmt.Errorf(
-			"get session host info: %w", err,
-		)
-	}
-
-	return &info, nil
-}
-
-// ClientHostInfo holds the IP and hostname for a client.
-type ClientHostInfo struct {
-	IP       string
-	Hostname string
-}
-
-// GetClientHostInfo returns the IP and hostname for a
-// client.
-func (database *Database) GetClientHostInfo(
-	ctx context.Context,
-	clientID int64,
-) (*ClientHostInfo, error) {
-	var info ClientHostInfo
-
-	err := database.conn.QueryRowContext(
-		ctx,
-		`SELECT ip, hostname
-		 FROM clients WHERE id = ?`,
-		clientID,
-	).Scan(&info.IP, &info.Hostname)
-	if err != nil {
-		return nil, fmt.Errorf(
-			"get client host info: %w", err,
-		)
-	}
-
-	return &info, nil
-}
-
 // GetChannelByName returns the channel ID for a name.
 func (database *Database) GetChannelByName(
 	ctx context.Context,
@@ -477,8 +375,7 @@ func (database *Database) ChannelMembers(
 	channelID int64,
 ) ([]MemberInfo, error) {
 	rows, err := database.conn.QueryContext(ctx,
-		`SELECT s.id, s.nick, s.username,
-		   s.hostname, s.last_seen
+		`SELECT s.id, s.nick, s.last_seen
 		 FROM sessions s
 		 INNER JOIN channel_members cm
 		   ON cm.session_id = s.id
@@ -498,9 +395,7 @@ func (database *Database) ChannelMembers(
 		var member MemberInfo

 		err = rows.Scan(
-			&member.ID, &member.Nick,
-			&member.Username, &member.Hostname,
-			&member.LastSeen,
+			&member.ID, &member.Nick, &member.LastSeen,
 		)
 		if err != nil {
 			return nil, fmt.Errorf(
@@ -838,8 +733,8 @@ func scanMessages(
 			code, _ := strconv.Atoi(msg.Command)
 			msg.Code = code

-			if mt, err := irc.FromInt(code); err == nil {
-				msg.Command = mt.Name()
+			if name := irc.Name(code); name != "" {
+				msg.Command = name
 			}
 		}

@@ -1201,199 +1096,3 @@ func (database *Database) GetSessionCreatedAt(

 	return createdAt, nil
 }
-
-// SetAway sets the away message for a session.
-// An empty message clears the away status.
-func (database *Database) SetAway(
-	ctx context.Context,
-	sessionID int64,
-	message string,
-) error {
-	_, err := database.conn.ExecContext(ctx,
-		"UPDATE sessions SET away_message = ? WHERE id = ?",
-		message, sessionID)
-	if err != nil {
-		return fmt.Errorf("set away: %w", err)
-	}
-
-	return nil
-}
-
-// GetAway returns the away message for a session.
-// Returns an empty string if the user is not away.
-func (database *Database) GetAway(
-	ctx context.Context,
-	sessionID int64,
-) (string, error) {
-	var msg string
-
-	err := database.conn.QueryRowContext(ctx,
-		"SELECT away_message FROM sessions WHERE id = ?",
-		sessionID,
-	).Scan(&msg)
-	if err != nil {
-		return "", fmt.Errorf("get away: %w", err)
-	}
-
-	return msg, nil
-}
-
-// SetTopicMeta sets the topic along with who set it and
-// when.
-func (database *Database) SetTopicMeta(
-	ctx context.Context,
-	channelName, topic, setBy string,
-) error {
-	now := time.Now()
-
-	_, err := database.conn.ExecContext(ctx,
-		`UPDATE channels
-		 SET topic = ?, topic_set_by = ?,
-		     topic_set_at = ?, updated_at = ?
-		 WHERE name = ?`,
-		topic, setBy, now, now, channelName)
-	if err != nil {
-		return fmt.Errorf("set topic meta: %w", err)
-	}
-
-	return nil
-}
-
-// TopicMeta holds topic metadata for a channel.
-type TopicMeta struct {
-	SetBy string
-	SetAt time.Time
-}
-
-// GetTopicMeta returns who set the topic and when.
-func (database *Database) GetTopicMeta(
-	ctx context.Context,
-	channelID int64,
-) (*TopicMeta, error) {
-	var (
-		setBy string
-		setAt sql.NullTime
-	)
-
-	err := database.conn.QueryRowContext(ctx,
-		`SELECT topic_set_by, topic_set_at
-		 FROM channels WHERE id = ?`,
-		channelID,
-	).Scan(&setBy, &setAt)
-	if err != nil {
-		return nil, fmt.Errorf(
-			"get topic meta: %w", err,
-		)
-	}
-
-	if setBy == "" || !setAt.Valid {
-		return nil, nil //nolint:nilnil
-	}
-
-	return &TopicMeta{
-		SetBy: setBy,
-		SetAt: setAt.Time,
-	}, nil
-}
-
-// GetSessionLastSeen returns the last_seen time for a
-// session.
-func (database *Database) GetSessionLastSeen(
-	ctx context.Context,
-	sessionID int64,
-) (time.Time, error) {
-	var lastSeen time.Time
-
-	err := database.conn.QueryRowContext(ctx,
-		"SELECT last_seen FROM sessions WHERE id = ?",
-		sessionID,
-	).Scan(&lastSeen)
-	if err != nil {
-		return time.Time{}, fmt.Errorf(
-			"get session last_seen: %w", err,
-		)
-	}
-
-	return lastSeen, nil
-}
-
-// PruneOldQueueEntries deletes client output queue entries
-// older than cutoff and returns the number of rows removed.
-func (database *Database) PruneOldQueueEntries(
-	ctx context.Context,
-	cutoff time.Time,
-) (int64, error) {
-	res, err := database.conn.ExecContext(ctx,
-		"DELETE FROM client_queues WHERE created_at < ?",
-		cutoff,
-	)
-	if err != nil {
-		return 0, fmt.Errorf(
-			"prune old client output queue entries: %w", err,
-		)
-	}
-
-	deleted, _ := res.RowsAffected()
-
-	return deleted, nil
-}
-
-// PruneOldMessages deletes messages older than cutoff and
-// returns the number of rows removed.
-func (database *Database) PruneOldMessages(
-	ctx context.Context,
-	cutoff time.Time,
-) (int64, error) {
-	res, err := database.conn.ExecContext(ctx,
-		"DELETE FROM messages WHERE created_at < ?",
-		cutoff,
-	)
-	if err != nil {
-		return 0, fmt.Errorf(
-			"prune old messages: %w", err,
-		)
-	}
-
-	deleted, _ := res.RowsAffected()
-
-	return deleted, nil
-}
-
-// GetClientCount returns the total number of clients.
-func (database *Database) GetClientCount(
-	ctx context.Context,
-) (int64, error) {
-	var count int64
-
-	err := database.conn.QueryRowContext(
-		ctx,
-		"SELECT COUNT(*) FROM clients",
-	).Scan(&count)
-	if err != nil {
-		return 0, fmt.Errorf(
-			"get client count: %w", err,
-		)
-	}
-
-	return count, nil
-}
-
-// GetQueueEntryCount returns the total number of entries
-// in the client output queues.
-func (database *Database) GetQueueEntryCount(
-	ctx context.Context,
-) (int64, error) {
-	var count int64
-
-	err := database.conn.QueryRowContext(
-		ctx,
-		"SELECT COUNT(*) FROM client_queues",
-	).Scan(&count)
-	if err != nil {
-		return 0, fmt.Errorf(
-			"get queue entry count: %w", err,
-		)
-	}
-
-	return count, nil
-}
--- a/internal/db/queries_test.go
+++ b/internal/db/queries_test.go
@@ -34,7 +34,7 @@ func TestCreateSession(t *testing.T) {
 	ctx := t.Context()

 	sessionID, _, token, err := database.CreateSession(
-		ctx, "alice", "", "", "",
+		ctx, "alice",
 	)
 	if err != nil {
 		t.Fatal(err)
@@ -45,7 +45,7 @@ func TestCreateSession(t *testing.T) {
 	}

 	_, _, dupToken, dupErr := database.CreateSession(
-		ctx, "alice", "", "", "",
+		ctx, "alice",
 	)
 	if dupErr == nil {
 		t.Fatal("expected error for duplicate nick")
@@ -54,249 +54,13 @@ func TestCreateSession(t *testing.T) {
 	_ = dupToken
 }

-// assertSessionHostInfo creates a session and verifies
-// the stored username and hostname match expectations.
-func assertSessionHostInfo(
-	t *testing.T,
-	database *db.Database,
-	nick, inputUser, inputHost,
-	expectUser, expectHost string,
-) {
-	t.Helper()
-
-	sessionID, _, _, err := database.CreateSession(
-		t.Context(), nick, inputUser, inputHost, "",
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	info, err := database.GetSessionHostInfo(
-		t.Context(), sessionID,
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if info.Username != expectUser {
-		t.Fatalf(
-			"expected username %s, got %s",
-			expectUser, info.Username,
-		)
-	}
-
-	if info.Hostname != expectHost {
-		t.Fatalf(
-			"expected hostname %s, got %s",
-			expectHost, info.Hostname,
-		)
-	}
-}
-
-func TestCreateSessionWithUserHost(t *testing.T) {
-	t.Parallel()
-
-	database := setupTestDB(t)
-
-	assertSessionHostInfo(
-		t, database,
-		"hostuser", "myident", "example.com",
-		"myident", "example.com",
-	)
-}
-
-func TestCreateSessionDefaultUsername(t *testing.T) {
-	t.Parallel()
-
-	database := setupTestDB(t)
-
-	// Empty username defaults to nick.
-	assertSessionHostInfo(
-		t, database,
-		"defaultu", "", "host.local",
-		"defaultu", "host.local",
-	)
-}
-
-func TestCreateSessionStoresIP(t *testing.T) {
-	t.Parallel()
-
-	database := setupTestDB(t)
-	ctx := t.Context()
-
-	sessionID, clientID, _, err := database.CreateSession(
-		ctx, "ipuser", "ident", "host.example.com",
-		"192.168.1.42",
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	info, err := database.GetSessionHostInfo(
-		ctx, sessionID,
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if info.IP != "192.168.1.42" {
-		t.Fatalf(
-			"expected session IP 192.168.1.42, got %s",
-			info.IP,
-		)
-	}
-
-	clientInfo, err := database.GetClientHostInfo(
-		ctx, clientID,
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if clientInfo.IP != "192.168.1.42" {
-		t.Fatalf(
-			"expected client IP 192.168.1.42, got %s",
-			clientInfo.IP,
-		)
-	}
-
-	if clientInfo.Hostname != "host.example.com" {
-		t.Fatalf(
-			"expected client hostname host.example.com, got %s",
-			clientInfo.Hostname,
-		)
-	}
-}
-
-func TestGetClientHostInfoNotFound(t *testing.T) {
-	t.Parallel()
-
-	database := setupTestDB(t)
-
-	_, err := database.GetClientHostInfo(
-		t.Context(), 99999,
-	)
-	if err == nil {
-		t.Fatal("expected error for nonexistent client")
-	}
-}
-
-func TestGetSessionHostInfoNotFound(t *testing.T) {
-	t.Parallel()
-
-	database := setupTestDB(t)
-
-	_, err := database.GetSessionHostInfo(
-		t.Context(), 99999,
-	)
-	if err == nil {
-		t.Fatal("expected error for nonexistent session")
-	}
-}
-
-func TestFormatHostmask(t *testing.T) {
-	t.Parallel()
-
-	result := db.FormatHostmask(
-		"nick", "user", "host.com",
-	)
-	if result != "nick!user@host.com" {
-		t.Fatalf(
-			"expected nick!user@host.com, got %s",
-			result,
-		)
-	}
-}
-
-func TestFormatHostmaskDefaults(t *testing.T) {
-	t.Parallel()
-
-	result := db.FormatHostmask("nick", "", "")
-	if result != "nick!nick@*" {
-		t.Fatalf(
-			"expected nick!nick@*, got %s",
-			result,
-		)
-	}
-}
-
-func TestMemberInfoHostmask(t *testing.T) {
-	t.Parallel()
-
-	member := &db.MemberInfo{ //nolint:exhaustruct // test only uses hostmask fields
-		Nick:     "alice",
-		Username: "aliceident",
-		Hostname: "alice.example.com",
-	}
-
-	hostmask := member.Hostmask()
-	expected := "alice!aliceident@alice.example.com"
-
-	if hostmask != expected {
-		t.Fatalf(
-			"expected %s, got %s", expected, hostmask,
-		)
-	}
-}
-
-func TestChannelMembersIncludeUserHost(t *testing.T) {
-	t.Parallel()
-
-	database := setupTestDB(t)
-	ctx := t.Context()
-
-	sid, _, _, err := database.CreateSession(
-		ctx, "memuser", "myuser", "myhost.net", "",
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	chID, err := database.GetOrCreateChannel(
-		ctx, "#hostchan",
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	err = database.JoinChannel(ctx, chID, sid)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	members, err := database.ChannelMembers(ctx, chID)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if len(members) != 1 {
-		t.Fatalf(
-			"expected 1 member, got %d", len(members),
-		)
-	}
-
-	if members[0].Username != "myuser" {
-		t.Fatalf(
-			"expected username myuser, got %s",
-			members[0].Username,
-		)
-	}
-
-	if members[0].Hostname != "myhost.net" {
-		t.Fatalf(
-			"expected hostname myhost.net, got %s",
-			members[0].Hostname,
-		)
-	}
-}
-
 func TestGetSessionByToken(t *testing.T) {
 	t.Parallel()

 	database := setupTestDB(t)
 	ctx := t.Context()

-	_, _, token, err := database.CreateSession(ctx, "bob", "", "", "")
+	_, _, token, err := database.CreateSession(ctx, "bob")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -329,7 +93,7 @@ func TestGetSessionByNick(t *testing.T) {
 	ctx := t.Context()

 	charlieID, charlieClientID, charlieToken, err :=
-		database.CreateSession(ctx, "charlie", "", "", "")
+		database.CreateSession(ctx, "charlie")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -386,7 +150,7 @@ func TestJoinAndPart(t *testing.T) {
 	database := setupTestDB(t)
 	ctx := t.Context()

-	sid, _, _, err := database.CreateSession(ctx, "user1", "", "", "")
+	sid, _, _, err := database.CreateSession(ctx, "user1")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -435,7 +199,7 @@ func TestDeleteChannelIfEmpty(t *testing.T) {
 		t.Fatal(err)
 	}

-	sid, _, _, err := database.CreateSession(ctx, "temp", "", "", "")
+	sid, _, _, err := database.CreateSession(ctx, "temp")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -470,7 +234,7 @@ func createSessionWithChannels(

 	ctx := t.Context()

-	sid, _, _, err := database.CreateSession(ctx, nick, "", "", "")
+	sid, _, _, err := database.CreateSession(ctx, nick)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -553,7 +317,7 @@ func TestChangeNick(t *testing.T) {
 	ctx := t.Context()

 	sid, _, token, err := database.CreateSession(
-		ctx, "old", "", "", "",
+		ctx, "old",
 	)
 	if err != nil {
 		t.Fatal(err)
@@ -637,7 +401,7 @@ func TestPollMessages(t *testing.T) {
 	ctx := t.Context()

 	sid, _, token, err := database.CreateSession(
-		ctx, "poller", "", "", "",
+		ctx, "poller",
 	)
 	if err != nil {
 		t.Fatal(err)
@@ -744,7 +508,7 @@ func TestDeleteSession(t *testing.T) {
 	ctx := t.Context()

 	sid, _, _, err := database.CreateSession(
-		ctx, "deleteme", "", "", "",
+		ctx, "deleteme",
 	)
 	if err != nil {
 		t.Fatal(err)
@@ -784,12 +548,12 @@ func TestChannelMembers(t *testing.T) {
 	database := setupTestDB(t)
 	ctx := t.Context()

-	sid1, _, _, err := database.CreateSession(ctx, "m1", "", "", "")
+	sid1, _, _, err := database.CreateSession(ctx, "m1")
 	if err != nil {
 		t.Fatal(err)
 	}

-	sid2, _, _, err := database.CreateSession(ctx, "m2", "", "", "")
+	sid2, _, _, err := database.CreateSession(ctx, "m2")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -847,7 +611,7 @@ func TestEnqueueToClient(t *testing.T) {
 	ctx := t.Context()

 	_, _, token, err := database.CreateSession(
-		ctx, "enqclient", "", "", "",
+		ctx, "enqclient",
 	)
 	if err != nil {
 		t.Fatal(err)
--- a/internal/db/schema/001_initial.sql
+++ b/internal/db/schema/001_initial.sql
@@ -6,12 +6,8 @@ CREATE TABLE IF NOT EXISTS sessions (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    uuid TEXT NOT NULL UNIQUE,
    nick TEXT NOT NULL UNIQUE,
-    username TEXT NOT NULL DEFAULT '',
-    hostname TEXT NOT NULL DEFAULT '',
-    ip TEXT NOT NULL DEFAULT '',
    password_hash TEXT NOT NULL DEFAULT '',
    signing_key TEXT NOT NULL DEFAULT '',
-    away_message TEXT NOT NULL DEFAULT '',
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    last_seen DATETIME DEFAULT CURRENT_TIMESTAMP
 );
@@ -23,8 +19,6 @@ CREATE TABLE IF NOT EXISTS clients (
    uuid TEXT NOT NULL UNIQUE,
    session_id INTEGER NOT NULL REFERENCES sessions(id) ON DELETE CASCADE,
    token TEXT NOT NULL UNIQUE,
-    ip TEXT NOT NULL DEFAULT '',
-    hostname TEXT NOT NULL DEFAULT '',
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    last_seen DATETIME DEFAULT CURRENT_TIMESTAMP
 );
@@ -36,8 +30,6 @@ CREATE TABLE IF NOT EXISTS channels (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    name TEXT NOT NULL UNIQUE,
    topic TEXT NOT NULL DEFAULT '',
-    topic_set_by TEXT NOT NULL DEFAULT '',
-    topic_set_at DATETIME,
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
 );
--- a/internal/handlers/api.go
+++ b/internal/handlers/api.go
@@ -4,16 +4,14 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"net"
 	"net/http"
 	"regexp"
 	"strconv"
 	"strings"
 	"time"

-	"git.eeqj.de/sneak/neoirc/internal/db"
-	"git.eeqj.de/sneak/neoirc/pkg/irc"
-	"github.com/go-chi/chi/v5"
+	"git.eeqj.de/sneak/neoirc/internal/irc"
+	"github.com/go-chi/chi"
 )

 var validNickRe = regexp.MustCompile(
@@ -24,12 +22,6 @@ var validChannelRe = regexp.MustCompile(
 	`^#[a-zA-Z0-9_\-]{1,63}$`,
 )

-var validUsernameRe = regexp.MustCompile(
-	`^[a-zA-Z0-9_\-\[\]\\^{}|` + "`" + `]{1,32}$`,
-)
-
-const dnsLookupTimeout = 3 * time.Second
-
 const (
 	maxLongPollTimeout = 30
 	pollMessageLimit   = 100
@@ -46,55 +38,6 @@ func (hdlr *Handlers) maxBodySize() int64 {
 	return defaultMaxBodySize
 }

-// clientIP extracts the connecting client's IP address
-// from the request, checking X-Forwarded-For and
-// X-Real-IP headers before falling back to RemoteAddr.
-func clientIP(request *http.Request) string {
-	if forwarded := request.Header.Get("X-Forwarded-For"); forwarded != "" {
-		// X-Forwarded-For can contain a comma-separated list;
-		// the first entry is the original client.
-		parts := strings.SplitN(forwarded, ",", 2) //nolint:mnd
-		ip := strings.TrimSpace(parts[0])
-
-		if ip != "" {
-			return ip
-		}
-	}
-
-	if realIP := request.Header.Get("X-Real-IP"); realIP != "" {
-		return strings.TrimSpace(realIP)
-	}
-
-	host, _, err := net.SplitHostPort(request.RemoteAddr)
-	if err != nil {
-		return request.RemoteAddr
-	}
-
-	return host
-}
-
-// resolveHostname performs a reverse DNS lookup on the
-// given IP address. Returns the first PTR record with the
-// trailing dot stripped, or the raw IP if lookup fails.
-func resolveHostname(
-	reqCtx context.Context,
-	addr string,
-) string {
-	resolver := &net.Resolver{} //nolint:exhaustruct // using default resolver
-
-	ctx, cancel := context.WithTimeout(
-		reqCtx, dnsLookupTimeout,
-	)
-	defer cancel()
-
-	names, err := resolver.LookupAddr(ctx, addr)
-	if err != nil || len(names) == 0 {
-		return addr
-	}
-
-	return strings.TrimSuffix(names[0], ".")
-}
-
 // authSession extracts the session from the client token.
 func (hdlr *Handlers) authSession(
 	request *http.Request,
@@ -127,10 +70,11 @@ func (hdlr *Handlers) requireAuth(
 	sessionID, clientID, nick, err :=
 		hdlr.authSession(request)
 	if err != nil {
-		hdlr.respondJSON(writer, request, map[string]any{
-			"error":   "not registered",
-			"numeric": irc.ErrNotRegistered,
-		}, http.StatusUnauthorized)
+		hdlr.respondError(
+			writer, request,
+			"unauthorized",
+			http.StatusUnauthorized,
+		)

 		return 0, 0, "", false
 	}
@@ -200,10 +144,35 @@ func (hdlr *Handlers) handleCreateSession(
 	writer http.ResponseWriter,
 	request *http.Request,
 ) {
+	// Validate hashcash proof-of-work if configured.
+	if hdlr.params.Config.HashcashBits > 0 {
+		stamp := request.Header.Get("X-Hashcash")
+		if stamp == "" {
+			hdlr.respondError(
+				writer, request,
+				"hashcash proof-of-work required",
+				http.StatusPaymentRequired,
+			)
+
+			return
+		}
+
+		err := hdlr.hashcashVal.Validate(
+			stamp, hdlr.params.Config.HashcashBits,
+		)
+		if err != nil {
+			hdlr.respondError(
+				writer, request,
+				"invalid hashcash stamp: "+err.Error(),
+				http.StatusPaymentRequired,
+			)
+
+			return
+		}
+	}
+
 	type createRequest struct {
 		Nick string `json:"nick"`
-		Username string `json:"username,omitempty"`
-		Hashcash string `json:"pow_token,omitempty"` //nolint:tagliatelle
 	}

 	var payload createRequest
@@ -219,12 +188,6 @@ func (hdlr *Handlers) handleCreateSession(
 		return
 	}

-	if !hdlr.validateHashcash(
-		writer, request, payload.Hashcash,
-	) {
-		return
-	}
-
 	payload.Nick = strings.TrimSpace(payload.Nick)

 	if !validNickRe.MatchString(payload.Nick) {
@@ -237,40 +200,9 @@ func (hdlr *Handlers) handleCreateSession(
 		return
 	}

-	username := resolveUsername(
-		payload.Username, payload.Nick,
-	)
-
-	if !validUsernameRe.MatchString(username) {
-		hdlr.respondError(
-			writer, request,
-			"invalid username format",
-			http.StatusBadRequest,
-		)
-
-		return
-	}
-
-	hdlr.executeCreateSession(
-		writer, request, payload.Nick, username,
-	)
-}
-
-func (hdlr *Handlers) executeCreateSession(
-	writer http.ResponseWriter,
-	request *http.Request,
-	nick, username string,
-) {
-	remoteIP := clientIP(request)
-
-	hostname := resolveHostname(
-		request.Context(), remoteIP,
-	)
-
 	sessionID, clientID, token, err :=
 		hdlr.params.Database.CreateSession(
-			request.Context(),
-			nick, username, hostname, remoteIP,
+			request.Context(), payload.Nick,
 		)
 	if err != nil {
 		hdlr.handleCreateSessionError(
@@ -280,73 +212,21 @@ func (hdlr *Handlers) executeCreateSession(
 		return
 	}

-	hdlr.stats.IncrSessions()
-	hdlr.stats.IncrConnections()
-
-	hdlr.deliverMOTD(request, clientID, sessionID, nick)
+	hdlr.deliverMOTD(request, clientID, sessionID, payload.Nick)

 	hdlr.respondJSON(writer, request, map[string]any{
 		"id":    sessionID,
-		"nick":  nick,
+		"nick":  payload.Nick,
 		"token": token,
 	}, http.StatusCreated)
 }

-// validateHashcash validates a hashcash stamp if required.
-// Returns false if validation failed and a response was
-// already sent.
-func (hdlr *Handlers) validateHashcash(
-	writer http.ResponseWriter,
-	request *http.Request,
-	stamp string,
-) bool {
-	if hdlr.params.Config.HashcashBits == 0 {
-		return true
-	}
-
-	if stamp == "" {
-		hdlr.respondError(
-			writer, request,
-			"hashcash proof-of-work required",
-			http.StatusPaymentRequired,
-		)
-
-		return false
-	}
-
-	err := hdlr.hashcashVal.Validate(
-		stamp, hdlr.params.Config.HashcashBits,
-	)
-	if err != nil {
-		hdlr.respondError(
-			writer, request,
-			"invalid hashcash stamp: "+err.Error(),
-			http.StatusPaymentRequired,
-		)
-
-		return false
-	}
-
-	return true
-}
-
-// resolveUsername returns the trimmed username, defaulting
-// to the nick if empty.
-func resolveUsername(username, nick string) string {
-	username = strings.TrimSpace(username)
-	if username == "" {
-		return nick
-	}
-
-	return username
-}
-
 func (hdlr *Handlers) handleCreateSessionError(
 	writer http.ResponseWriter,
 	request *http.Request,
 	err error,
 ) {
-	if db.IsUniqueConstraintError(err) {
+	if strings.Contains(err.Error(), "UNIQUE") {
 		hdlr.respondError(
 			writer, request,
 			"nick already taken",
@@ -544,12 +424,12 @@ func (hdlr *Handlers) serverName() string {
 func (hdlr *Handlers) enqueueNumeric(
 	ctx context.Context,
 	clientID int64,
-	code irc.IRCMessageType,
+	code int,
 	nick string,
 	params []string,
 	text string,
 ) {
-	command := code.Code()
+	command := fmt.Sprintf("%03d", code)

 	body, err := json.Marshal([]string{text})
 	if err != nil {
@@ -956,11 +836,6 @@ func (hdlr *Handlers) dispatchCommand(
 	bodyLines func() []string,
 ) {
 	switch command {
-	case irc.CmdAway:
-		hdlr.handleAway(
-			writer, request,
-			sessionID, clientID, nick, bodyLines,
-		)
 	case irc.CmdPrivmsg, irc.CmdNotice:
 		hdlr.handlePrivmsg(
 			writer, request,
@@ -1071,8 +946,8 @@ func (hdlr *Handlers) handlePrivmsg(
 	if target == "" {
 		hdlr.enqueueNumeric(
 			request.Context(), clientID,
-			irc.ErrNoRecipient, nick, []string{command},
-			"No recipient given",
+			irc.ErrNeedMoreParams, nick, []string{command},
+			"Not enough parameters",
 		)
 		hdlr.broker.Notify(sessionID)
 		hdlr.respondJSON(writer, request,
@@ -1086,8 +961,8 @@ func (hdlr *Handlers) handlePrivmsg(
 	if len(lines) == 0 {
 		hdlr.enqueueNumeric(
 			request.Context(), clientID,
-			irc.ErrNoTextToSend, nick, []string{command},
-			"No text to send",
+			irc.ErrNeedMoreParams, nick, []string{command},
+			"Not enough parameters",
 		)
 		hdlr.broker.Notify(sessionID)
 		hdlr.respondJSON(writer, request,
@@ -1097,8 +972,6 @@ func (hdlr *Handlers) handlePrivmsg(
 		return
 	}

-	hdlr.stats.IncrMessages()
-
 	if strings.HasPrefix(target, "#") {
 		hdlr.handleChannelMsg(
 			writer, request,
@@ -1122,7 +995,7 @@ func (hdlr *Handlers) respondIRCError(
 	writer http.ResponseWriter,
 	request *http.Request,
 	clientID, sessionID int64,
-	code irc.IRCMessageType,
+	code int,
 	nick string,
 	params []string,
 	text string,
@@ -1176,8 +1049,8 @@ func (hdlr *Handlers) handleChannelMsg(
 	if !isMember {
 		hdlr.respondIRCError(
 			writer, request, clientID, sessionID,
-			irc.ErrCannotSendToChan, nick, []string{target},
-			"Cannot send to channel",
+			irc.ErrNotOnChannel, nick, []string{target},
+			"You're not on that channel",
 		)

 		return
@@ -1273,19 +1146,6 @@ func (hdlr *Handlers) handleDirectMsg(
 		return
 	}

-	// If the target is away, send RPL_AWAY to the sender.
-	awayMsg, awayErr := hdlr.params.Database.GetAway(
-		request.Context(), targetSID,
-	)
-	if awayErr == nil && awayMsg != "" {
-		hdlr.enqueueNumeric(
-			request.Context(), clientID,
-			irc.RplAway, nick,
-			[]string{target}, awayMsg,
-		)
-		hdlr.broker.Notify(sessionID)
-	}
-
 	hdlr.respondJSON(writer, request,
 		map[string]string{"id": msgUUID, "status": "sent"},
 		http.StatusOK)
@@ -1396,25 +1256,14 @@ func (hdlr *Handlers) deliverJoinNumerics(
 ) {
 	ctx := request.Context()

-	hdlr.deliverTopicNumerics(
-		ctx, clientID, sessionID, nick, channel, chID,
+	chInfo, err := hdlr.params.Database.GetChannelByName(
+		ctx, channel,
 	)
+	if err == nil {
+		_ = chInfo // chInfo is the ID; topic comes from DB.
+	}

-	hdlr.deliverNamesNumerics(
-		ctx, clientID, nick, channel, chID,
-	)
-
-	hdlr.broker.Notify(sessionID)
-}
-
-// deliverTopicNumerics sends RPL_TOPIC or RPL_NOTOPIC,
-// plus RPL_TOPICWHOTIME when topic metadata is available.
-func (hdlr *Handlers) deliverTopicNumerics(
-	ctx context.Context,
-	clientID, sessionID int64,
-	nick, channel string,
-	chID int64,
-) {
+	// Get topic from channel info.
 	channels, listErr := hdlr.params.Database.ListChannels(
 		ctx, sessionID,
 	)
@@ -1436,54 +1285,29 @@ func (hdlr *Handlers) deliverTopicNumerics(
 			ctx, clientID, irc.RplTopic, nick,
 			[]string{channel}, topic,
 		)
-
-		topicMeta, tmErr := hdlr.params.Database.
-			GetTopicMeta(ctx, chID)
-		if tmErr == nil && topicMeta != nil {
-			hdlr.enqueueNumeric(
-				ctx, clientID,
-				irc.RplTopicWhoTime, nick,
-				[]string{
-					channel,
-					topicMeta.SetBy,
-					strconv.FormatInt(
-						topicMeta.SetAt.Unix(), 10,
-					),
-				},
-				"",
-			)
-		}
 	} else {
 		hdlr.enqueueNumeric(
 			ctx, clientID, irc.RplNoTopic, nick,
 			[]string{channel}, "No topic is set",
 		)
 	}
-}

-// deliverNamesNumerics sends RPL_NAMREPLY and
-// RPL_ENDOFNAMES for a channel.
-func (hdlr *Handlers) deliverNamesNumerics(
-	ctx context.Context,
-	clientID int64,
-	nick, channel string,
-	chID int64,
-) {
+	// Get member list for NAMES reply.
 	members, memErr := hdlr.params.Database.ChannelMembers(
 		ctx, chID,
 	)

 	if memErr == nil && len(members) > 0 {
-		entries := make([]string, 0, len(members))
+		nicks := make([]string, 0, len(members))

 		for _, mem := range members {
-			entries = append(entries, mem.Hostmask())
+			nicks = append(nicks, mem.Nick)
 		}

 		hdlr.enqueueNumeric(
 			ctx, clientID, irc.RplNamReply, nick,
 			[]string{"=", channel},
-			strings.Join(entries, " "),
+			strings.Join(nicks, " "),
 		)
 	}

@@ -1491,6 +1315,8 @@ func (hdlr *Handlers) deliverNamesNumerics(
 		ctx, clientID, irc.RplEndOfNames, nick,
 		[]string{channel}, "End of /NAMES list",
 	)
+
+	hdlr.broker.Notify(sessionID)
 }

 func (hdlr *Handlers) handlePart(
@@ -1628,7 +1454,7 @@ func (hdlr *Handlers) executeNickChange(
 		request.Context(), sessionID, newNick,
 	)
 	if err != nil {
-		if db.IsUniqueConstraintError(err) {
+		if strings.Contains(err.Error(), "UNIQUE") {
 			hdlr.respondIRCError(
 				writer, request, clientID, sessionID,
 				irc.ErrNicknameInUse, nick, []string{newNick},
@@ -1758,32 +1584,6 @@ func (hdlr *Handlers) handleTopic(
 		return
 	}

-	isMember, err := hdlr.params.Database.IsChannelMember(
-		request.Context(), chID, sessionID,
-	)
-	if err != nil {
-		hdlr.log.Error(
-			"check membership failed", "error", err,
-		)
-		hdlr.respondError(
-			writer, request,
-			"internal error",
-			http.StatusInternalServerError,
-		)
-
-		return
-	}
-
-	if !isMember {
-		hdlr.respondIRCError(
-			writer, request, clientID, sessionID,
-			irc.ErrNotOnChannel, nick, []string{channel},
-			"You're not on that channel",
-		)
-
-		return
-	}
-
 	hdlr.executeTopic(
 		writer, request,
 		sessionID, clientID, nick,
@@ -1800,8 +1600,8 @@ func (hdlr *Handlers) executeTopic(
 	body json.RawMessage,
 	chID int64,
 ) {
-	setErr := hdlr.params.Database.SetTopicMeta(
-		request.Context(), channel, topic, nick,
+	setErr := hdlr.params.Database.SetTopic(
+		request.Context(), channel, topic,
 	)
 	if setErr != nil {
 		hdlr.log.Error(
@@ -1828,25 +1628,6 @@ func (hdlr *Handlers) executeTopic(
 		request.Context(), clientID,
 		irc.RplTopic, nick, []string{channel}, topic,
 	)
-
-	// 333 RPL_TOPICWHOTIME
-	topicMeta, tmErr := hdlr.params.Database.
-		GetTopicMeta(request.Context(), chID)
-	if tmErr == nil && topicMeta != nil {
-		hdlr.enqueueNumeric(
-			request.Context(), clientID,
-			irc.RplTopicWhoTime, nick,
-			[]string{
-				channel,
-				topicMeta.SetBy,
-				strconv.FormatInt(
-					topicMeta.SetAt.Unix(), 10,
-				),
-			},
-			"",
-		)
-	}
-
 	hdlr.broker.Notify(sessionID)

 	hdlr.respondJSON(writer, request,
@@ -2082,16 +1863,16 @@ func (hdlr *Handlers) handleNames(
 		ctx, chID,
 	)
 	if memErr == nil && len(members) > 0 {
-		entries := make([]string, 0, len(members))
+		nicks := make([]string, 0, len(members))

 		for _, mem := range members {
-			entries = append(entries, mem.Hostmask())
+			nicks = append(nicks, mem.Nick)
 		}

 		hdlr.enqueueNumeric(
 			ctx, clientID, irc.RplNamReply, nick,
 			[]string{"=", channel},
-			strings.Join(entries, " "),
+			strings.Join(nicks, " "),
 		)
 	}

@@ -2222,26 +2003,10 @@ func (hdlr *Handlers) executeWhois(
 		return
 	}

-	// Look up username and hostname for the target.
-	username := queryNick
-	hostname := srvName
-
-	hostInfo, hostErr := hdlr.params.Database.
-		GetSessionHostInfo(ctx, targetSID)
-	if hostErr == nil && hostInfo != nil {
-		if hostInfo.Username != "" {
-			username = hostInfo.Username
-		}
-
-		if hostInfo.Hostname != "" {
-			hostname = hostInfo.Hostname
-		}
-	}
-
 	// 311 RPL_WHOISUSER
 	hdlr.enqueueNumeric(
 		ctx, clientID, irc.RplWhoisUser, nick,
-		[]string{queryNick, username, hostname, "*"},
+		[]string{queryNick, queryNick, srvName, "*"},
 		queryNick,
 	)

@@ -2252,11 +2017,6 @@ func (hdlr *Handlers) executeWhois(
 		"neoirc server",
 	)

-	// 317 RPL_WHOISIDLE
-	hdlr.deliverWhoisIdle(
-		ctx, clientID, nick, queryNick, targetSID,
-	)
-
 	// 319 RPL_WHOISCHANNELS
 	hdlr.deliverWhoisChannels(
 		ctx, clientID, nick, queryNick, targetSID,
@@ -2348,21 +2108,11 @@ func (hdlr *Handlers) handleWho(
 	)
 	if memErr == nil {
 		for _, mem := range members {
-			username := mem.Username
-			if username == "" {
-				username = mem.Nick
-			}
-
-			hostname := mem.Hostname
-			if hostname == "" {
-				hostname = srvName
-			}
-
 			// 352 RPL_WHOREPLY
 			hdlr.enqueueNumeric(
 				ctx, clientID, irc.RplWhoReply, nick,
 				[]string{
-					channel, username, hostname,
+					channel, mem.Nick, srvName,
 					srvName, mem.Nick, "H",
 				},
 				"0 "+mem.Nick,
@@ -2684,95 +2434,3 @@ func (hdlr *Handlers) HandleServerInfo() http.HandlerFunc {
 		)
 	}
 }
-
-// handleAway handles the AWAY command. An empty body
-// clears the away status; a non-empty body sets it.
-func (hdlr *Handlers) handleAway(
-	writer http.ResponseWriter,
-	request *http.Request,
-	sessionID, clientID int64,
-	nick string,
-	bodyLines func() []string,
-) {
-	ctx := request.Context()
-
-	lines := bodyLines()
-
-	awayMsg := ""
-	if len(lines) > 0 {
-		awayMsg = strings.Join(lines, " ")
-	}
-
-	err := hdlr.params.Database.SetAway(
-		ctx, sessionID, awayMsg,
-	)
-	if err != nil {
-		hdlr.log.Error("set away failed", "error", err)
-		hdlr.respondError(
-			writer, request,
-			"internal error",
-			http.StatusInternalServerError,
-		)
-
-		return
-	}
-
-	if awayMsg == "" {
-		// 305 RPL_UNAWAY
-		hdlr.enqueueNumeric(
-			ctx, clientID, irc.RplUnaway, nick, nil,
-			"You are no longer marked as being away",
-		)
-	} else {
-		// 306 RPL_NOWAWAY
-		hdlr.enqueueNumeric(
-			ctx, clientID, irc.RplNowAway, nick, nil,
-			"You have been marked as being away",
-		)
-	}
-
-	hdlr.broker.Notify(sessionID)
-	hdlr.respondJSON(writer, request,
-		map[string]string{"status": "ok"},
-		http.StatusOK)
-}
-
-// deliverWhoisIdle sends RPL_WHOISIDLE (317) with idle
-// time and signon time.
-func (hdlr *Handlers) deliverWhoisIdle(
-	ctx context.Context,
-	clientID int64,
-	nick, queryNick string,
-	targetSID int64,
-) {
-	lastSeen, lsErr := hdlr.params.Database.
-		GetSessionLastSeen(ctx, targetSID)
-	if lsErr != nil {
-		return
-	}
-
-	createdAt, caErr := hdlr.params.Database.
-		GetSessionCreatedAt(ctx, targetSID)
-	if caErr != nil {
-		return
-	}
-
-	idleSeconds := int64(time.Since(lastSeen).Seconds())
-	if idleSeconds < 0 {
-		idleSeconds = 0
-	}
-
-	signonUnix := strconv.FormatInt(
-		createdAt.Unix(), 10,
-	)
-
-	hdlr.enqueueNumeric(
-		ctx, clientID, irc.RplWhoisIdle, nick,
-		[]string{
-			queryNick,
-			strconv.FormatInt(idleSeconds, 10),
-			signonUnix,
-		},
-		"seconds idle, signon time",
-	)
-}
--- a/internal/handlers/api_test.go
+++ b/internal/handlers/api_test.go
@@ -26,7 +26,6 @@ import (
 	"git.eeqj.de/sneak/neoirc/internal/logger"
 	"git.eeqj.de/sneak/neoirc/internal/middleware"
 	"git.eeqj.de/sneak/neoirc/internal/server"
-	"git.eeqj.de/sneak/neoirc/internal/stats"
 	"go.uber.org/fx"
 	"go.uber.org/fx/fxtest"
 )
@@ -91,7 +90,6 @@ func newTestServer(
 				return cfg, nil
 			},
 			newTestDB,
-			stats.New,
 			newTestHealthcheck,
 			newTestMiddleware,
 			newTestHandlers,
@@ -146,14 +144,12 @@ func newTestHealthcheck(
 	cfg *config.Config,
 	log *logger.Logger,
 	database *db.Database,
-	tracker *stats.Tracker,
 ) (*healthcheck.Healthcheck, error) {
 	hcheck, err := healthcheck.New(lifecycle, healthcheck.Params{ //nolint:exhaustruct
 		Globals:  globs,
 		Config:   cfg,
 		Logger:   log,
 		Database: database,
-		Stats:    tracker,
 	})
 	if err != nil {
 		return nil, fmt.Errorf("test healthcheck: %w", err)
@@ -187,7 +183,6 @@ func newTestHandlers(
 	cfg *config.Config,
 	database *db.Database,
 	hcheck *healthcheck.Healthcheck,
-	tracker *stats.Tracker,
 ) (*handlers.Handlers, error) {
 	hdlr, err := handlers.New(lifecycle, handlers.Params{ //nolint:exhaustruct
 		Logger:      log,
@@ -195,7 +190,6 @@ func newTestHandlers(
 		Config:      cfg,
 		Database:    database,
 		Healthcheck: hcheck,
-		Stats:       tracker,
 	})
 	if err != nil {
 		return nil, fmt.Errorf("test handlers: %w", err)
@@ -817,9 +811,9 @@ func TestMessageMissingBody(t *testing.T) {

 	msgs, _ := tserver.pollMessages(token, lastID)

-	if !findNumeric(msgs, "412") {
+	if !findNumeric(msgs, "461") {
 		t.Fatalf(
-			"expected ERR_NOTEXTTOSEND (412), got %v",
+			"expected ERR_NEEDMOREPARAMS (461), got %v",
 			msgs,
 		)
 	}
@@ -841,9 +835,9 @@ func TestMessageMissingTo(t *testing.T) {

 	msgs, _ := tserver.pollMessages(token, lastID)

-	if !findNumeric(msgs, "411") {
+	if !findNumeric(msgs, "461") {
 		t.Fatalf(
-			"expected ERR_NORECIPIENT (411), got %v",
+			"expected ERR_NEEDMOREPARAMS (461), got %v",
 			msgs,
 		)
 	}
@@ -876,9 +870,9 @@ func TestNonMemberCannotSend(t *testing.T) {

 	msgs, _ := tserver.pollMessages(aliceToken, lastID)

-	if !findNumeric(msgs, "404") {
+	if !findNumeric(msgs, "442") {
 		t.Fatalf(
-			"expected ERR_CANNOTSENDTOCHAN (404), got %v",
+			"expected ERR_NOTONCHANNEL (442), got %v",
 			msgs,
 		)
 	}
@@ -1140,42 +1134,6 @@ func TestTopicMissingBody(t *testing.T) {
 	}
 }

-func TestTopicNonMember(t *testing.T) {
-	tserver := newTestServer(t)
-	aliceToken := tserver.createSession("alice_topic")
-	bobToken := tserver.createSession("bob_topic")
-
-	// Only alice joins the channel.
-	tserver.sendCommand(aliceToken, map[string]any{
-		commandKey: joinCmd, toKey: "#topicpriv",
-	})
-
-	// Drain bob's initial messages.
-	_, lastID := tserver.pollMessages(bobToken, 0)
-
-	// Bob tries to set topic without joining.
-	status, _ := tserver.sendCommand(
-		bobToken,
-		map[string]any{
-			commandKey: "TOPIC",
-			toKey:      "#topicpriv",
-			bodyKey:    []string{"Hijacked topic"},
-		},
-	)
-	if status != http.StatusOK {
-		t.Fatalf("expected 200, got %d", status)
-	}
-
-	msgs, _ := tserver.pollMessages(bobToken, lastID)
-
-	if !findNumeric(msgs, "442") {
-		t.Fatalf(
-			"expected ERR_NOTONCHANNEL (442), got %v",
-			msgs,
-		)
-	}
-}
-
 func TestPing(t *testing.T) {
 	tserver := newTestServer(t)
 	token := tserver.createSession("ping_user")
@@ -1699,133 +1657,6 @@ func TestHealthcheck(t *testing.T) {
 	}
 }

-func TestHealthcheckRuntimeStatsFields(t *testing.T) {
-	tserver := newTestServer(t)
-
-	resp, err := doRequest(
-		t,
-		http.MethodGet,
-		tserver.url("/.well-known/healthcheck.json"),
-		nil,
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	defer func() { _ = resp.Body.Close() }()
-
-	if resp.StatusCode != http.StatusOK {
-		t.Fatalf(
-			"expected 200, got %d", resp.StatusCode,
-		)
-	}
-
-	var result map[string]any
-
-	decErr := json.NewDecoder(resp.Body).Decode(&result)
-	if decErr != nil {
-		t.Fatalf("decode healthcheck: %v", decErr)
-	}
-
-	requiredFields := []string{
-		"sessions", "clients", "queuedLines",
-		"channels", "connectionsSinceBoot",
-		"sessionsSinceBoot", "messagesSinceBoot",
-	}
-
-	for _, field := range requiredFields {
-		if _, ok := result[field]; !ok {
-			t.Errorf(
-				"missing field %q in healthcheck", field,
-			)
-		}
-	}
-}
-
-func TestHealthcheckRuntimeStatsValues(t *testing.T) {
-	tserver := newTestServer(t)
-
-	token := tserver.createSession("statsuser")
-
-	tserver.sendCommand(token, map[string]any{
-		commandKey: joinCmd, toKey: "#statschan",
-	})
-	tserver.sendCommand(token, map[string]any{
-		commandKey: privmsgCmd,
-		toKey:      "#statschan",
-		bodyKey:    []string{"hello stats"},
-	})
-
-	result := tserver.fetchHealthcheck(t)
-
-	assertFieldGTE(t, result, "sessions", 1)
-	assertFieldGTE(t, result, "clients", 1)
-	assertFieldGTE(t, result, "channels", 1)
-	assertFieldGTE(t, result, "queuedLines", 0)
-	assertFieldGTE(t, result, "sessionsSinceBoot", 1)
-	assertFieldGTE(t, result, "connectionsSinceBoot", 1)
-	assertFieldGTE(t, result, "messagesSinceBoot", 1)
-}
-
-func (tserver *testServer) fetchHealthcheck(
-	t *testing.T,
-) map[string]any {
-	t.Helper()
-
-	resp, err := doRequest(
-		t,
-		http.MethodGet,
-		tserver.url("/.well-known/healthcheck.json"),
-		nil,
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	defer func() { _ = resp.Body.Close() }()
-
-	if resp.StatusCode != http.StatusOK {
-		t.Fatalf(
-			"expected 200, got %d", resp.StatusCode,
-		)
-	}
-
-	var result map[string]any
-
-	decErr := json.NewDecoder(resp.Body).Decode(&result)
-	if decErr != nil {
-		t.Fatalf("decode healthcheck: %v", decErr)
-	}
-
-	return result
-}
-
-func assertFieldGTE(
-	t *testing.T,
-	result map[string]any,
-	field string,
-	minimum float64,
-) {
-	t.Helper()
-
-	val, ok := result[field].(float64)
-	if !ok {
-		t.Errorf(
-			"field %q: not a number (got %T)",
-			field, result[field],
-		)
-
-		return
-	}
-
-	if val < minimum {
-		t.Errorf(
-			"expected %s >= %v, got %v",
-			field, minimum, val,
-		)
-	}
-}
-
 func TestRegisterValid(t *testing.T) {
 	tserver := newTestServer(t)

@@ -2130,249 +1961,6 @@ func TestSessionStillWorks(t *testing.T) {
 	}
 }

-// findNumericWithParams returns the first message matching
-// the given numeric code. Returns nil if not found.
-func findNumericWithParams(
-	msgs []map[string]any,
-	numeric string,
-) map[string]any {
-	want, _ := strconv.Atoi(numeric)
-
-	for _, msg := range msgs {
-		code, ok := msg["code"].(float64)
-		if ok && int(code) == want {
-			return msg
-		}
-	}
-
-	return nil
-}
-
-// getNumericParams extracts the params array from a
-// numeric message as a string slice.
-func getNumericParams(
-	msg map[string]any,
-) []string {
-	raw, exists := msg["params"]
-	if !exists || raw == nil {
-		return nil
-	}
-
-	arr, isArr := raw.([]any)
-	if !isArr {
-		return nil
-	}
-
-	result := make([]string, 0, len(arr))
-
-	for _, val := range arr {
-		str, isString := val.(string)
-		if isString {
-			result = append(result, str)
-		}
-	}
-
-	return result
-}
-
-func TestWhoisShowsHostInfo(t *testing.T) {
-	tserver := newTestServer(t)
-
-	token := tserver.createSessionWithUsername(
-		"whoisuser", "myident",
-	)
-
-	queryToken := tserver.createSession("querier")
-
-	_, lastID := tserver.pollMessages(queryToken, 0)
-
-	tserver.sendCommand(queryToken, map[string]any{
-		commandKey: "WHOIS",
-		toKey:      "whoisuser",
-	})
-
-	msgs, _ := tserver.pollMessages(queryToken, lastID)
-
-	whoisMsg := findNumericWithParams(msgs, "311")
-	if whoisMsg == nil {
-		t.Fatalf(
-			"expected RPL_WHOISUSER (311), got %v",
-			msgs,
-		)
-	}
-
-	params := getNumericParams(whoisMsg)
-
-	if len(params) < 2 {
-		t.Fatalf(
-			"expected at least 2 params, got %v",
-			params,
-		)
-	}
-
-	if params[1] != "myident" {
-		t.Fatalf(
-			"expected username myident, got %s",
-			params[1],
-		)
-	}
-
-	_ = token
-}
-
-// createSessionWithUsername creates a session with a
-// specific username and returns the token.
-func (tserver *testServer) createSessionWithUsername(
-	nick, username string,
-) string {
-	tserver.t.Helper()
-
-	body, err := json.Marshal(map[string]string{
-		"nick":     nick,
-		"username": username,
-	})
-	if err != nil {
-		tserver.t.Fatalf("marshal session: %v", err)
-	}
-
-	resp, err := doRequest(
-		tserver.t,
-		http.MethodPost,
-		tserver.url(apiSession),
-		bytes.NewReader(body),
-	)
-	if err != nil {
-		tserver.t.Fatalf("create session: %v", err)
-	}
-
-	defer func() { _ = resp.Body.Close() }()
-
-	if resp.StatusCode != http.StatusCreated {
-		respBody, _ := io.ReadAll(resp.Body)
-		tserver.t.Fatalf(
-			"create session: status %d: %s",
-			resp.StatusCode, respBody,
-		)
-	}
-
-	var result struct {
-		Token string `json:"token"`
-	}
-
-	_ = json.NewDecoder(resp.Body).Decode(&result)
-
-	return result.Token
-}
-
-func TestWhoShowsHostInfo(t *testing.T) {
-	tserver := newTestServer(t)
-
-	whoToken := tserver.createSessionWithUsername(
-		"whouser", "whoident",
-	)
-
-	tserver.sendCommand(whoToken, map[string]any{
-		commandKey: joinCmd, toKey: "#whotest",
-	})
-
-	queryToken := tserver.createSession("whoquerier")
-
-	tserver.sendCommand(queryToken, map[string]any{
-		commandKey: joinCmd, toKey: "#whotest",
-	})
-
-	_, lastID := tserver.pollMessages(queryToken, 0)
-
-	tserver.sendCommand(queryToken, map[string]any{
-		commandKey: "WHO",
-		toKey:      "#whotest",
-	})
-
-	msgs, _ := tserver.pollMessages(queryToken, lastID)
-
-	assertWhoReplyUsername(t, msgs, "whouser", "whoident")
-}
-
-func assertWhoReplyUsername(
-	t *testing.T,
-	msgs []map[string]any,
-	targetNick, expectedUsername string,
-) {
-	t.Helper()
-
-	for _, msg := range msgs {
-		code, isCode := msg["code"].(float64)
-		if !isCode || int(code) != 352 {
-			continue
-		}
-
-		params := getNumericParams(msg)
-		if len(params) < 5 || params[4] != targetNick {
-			continue
-		}
-
-		if params[1] != expectedUsername {
-			t.Fatalf(
-				"expected username %s in WHO, got %s",
-				expectedUsername, params[1],
-			)
-		}
-
-		return
-	}
-
-	t.Fatalf(
-		"expected RPL_WHOREPLY (352) for %s, msgs: %v",
-		targetNick, msgs,
-	)
-}
-
-func TestSessionUsernameDefault(t *testing.T) {
-	tserver := newTestServer(t)
-
-	// Create session without specifying username.
-	token := tserver.createSession("defaultusr")
-
-	queryToken := tserver.createSession("querier2")
-
-	_, lastID := tserver.pollMessages(queryToken, 0)
-
-	// WHOIS should show the nick as the username.
-	tserver.sendCommand(queryToken, map[string]any{
-		commandKey: "WHOIS",
-		toKey:      "defaultusr",
-	})
-
-	msgs, _ := tserver.pollMessages(queryToken, lastID)
-
-	whoisMsg := findNumericWithParams(msgs, "311")
-	if whoisMsg == nil {
-		t.Fatalf(
-			"expected RPL_WHOISUSER (311), got %v",
-			msgs,
-		)
-	}
-
-	params := getNumericParams(whoisMsg)
-
-	if len(params) < 2 {
-		t.Fatalf(
-			"expected at least 2 params, got %v",
-			params,
-		)
-	}
-
-	// Username defaults to nick.
-	if params[1] != "defaultusr" {
-		t.Fatalf(
-			"expected default username defaultusr, got %s",
-			params[1],
-		)
-	}
-
-	_ = token
-}
-
 func TestNickBroadcastToChannels(t *testing.T) {
 	tserver := newTestServer(t)
 	aliceToken := tserver.createSession("nick_a")
@@ -2400,135 +1988,3 @@ func TestNickBroadcastToChannels(t *testing.T) {
 		)
 	}
 }
-
-func TestNamesShowsHostmask(t *testing.T) {
-	tserver := newTestServer(t)
-
-	queryToken, lastID := setupChannelWithIdentMember(
-		tserver, "namesmember", "nmident",
-		"namesquery", "#namestest",
-	)
-
-	// Issue an explicit NAMES command.
-	tserver.sendCommand(queryToken, map[string]any{
-		commandKey: "NAMES",
-		toKey:      "#namestest",
-	})
-
-	msgs, _ := tserver.pollMessages(queryToken, lastID)
-
-	assertNamesHostmask(
-		t, msgs, "namesmember", "nmident",
-	)
-}
-
-func TestNamesOnJoinShowsHostmask(t *testing.T) {
-	tserver := newTestServer(t)
-
-	// First user joins to populate the channel.
-	firstToken := tserver.createSessionWithUsername(
-		"joinmem", "jmident",
-	)
-
-	tserver.sendCommand(firstToken, map[string]any{
-		commandKey: joinCmd, toKey: "#joinnamestest",
-	})
-
-	// Second user joins; the JOIN triggers
-	// deliverNamesNumerics which should include
-	// hostmask data.
-	joinerToken := tserver.createSession("joiner")
-
-	tserver.sendCommand(joinerToken, map[string]any{
-		commandKey: joinCmd, toKey: "#joinnamestest",
-	})
-
-	msgs, _ := tserver.pollMessages(joinerToken, 0)
-
-	assertNamesHostmask(
-		t, msgs, "joinmem", "jmident",
-	)
-}
-
-// setupChannelWithIdentMember creates a member session
-// with username, joins a channel, then creates a querier
-// and joins the same channel. Returns the querier token
-// and last message ID.
-func setupChannelWithIdentMember(
-	tserver *testServer,
-	memberNick, memberUsername,
-	querierNick, channel string,
-) (string, int64) {
-	tserver.t.Helper()
-
-	memberToken := tserver.createSessionWithUsername(
-		memberNick, memberUsername,
-	)
-
-	tserver.sendCommand(memberToken, map[string]any{
-		commandKey: joinCmd, toKey: channel,
-	})
-
-	queryToken := tserver.createSession(querierNick)
-
-	tserver.sendCommand(queryToken, map[string]any{
-		commandKey: joinCmd, toKey: channel,
-	})
-
-	_, lastID := tserver.pollMessages(queryToken, 0)
-
-	return queryToken, lastID
-}
-
-// assertNamesHostmask verifies that a RPL_NAMREPLY (353)
-// message contains the expected nick with hostmask format
-// (nick!user@host).
-func assertNamesHostmask(
-	t *testing.T,
-	msgs []map[string]any,
-	targetNick, expectedUsername string,
-) {
-	t.Helper()
-
-	for _, msg := range msgs {
-		code, ok := msg["code"].(float64)
-		if !ok || int(code) != 353 {
-			continue
-		}
-
-		raw, exists := msg["body"]
-		if !exists || raw == nil {
-			continue
-		}
-
-		arr, isArr := raw.([]any)
-		if !isArr || len(arr) == 0 {
-			continue
-		}
-
-		bodyStr, isStr := arr[0].(string)
-		if !isStr {
-			continue
-		}
-
-		// Look for the target nick's hostmask entry.
-		expected := targetNick + "!" +
-			expectedUsername + "@"
-
-		if !strings.Contains(bodyStr, expected) {
-			t.Fatalf(
-				"expected NAMES body to contain %q, "+
-					"got %q",
-				expected, bodyStr,
-			)
-		}
-
-		return
-	}
-
-	t.Fatalf(
-		"expected RPL_NAMREPLY (353) with hostmask "+
-			"for %s, msgs: %v",
-		targetNick, msgs,
-	)
-}
--- a/internal/handlers/auth.go
+++ b/internal/handlers/auth.go
@@ -4,8 +4,6 @@ import (
 	"encoding/json"
 	"net/http"
 	"strings"
-
-	"git.eeqj.de/sneak/neoirc/internal/db"
 )

 const minPasswordLength = 8
@@ -30,7 +28,6 @@ func (hdlr *Handlers) handleRegister(
 ) {
 	type registerRequest struct {
 		Nick     string `json:"nick"`
-		Username string `json:"username,omitempty"`
 		Password string `json:"password"`
 	}

@@ -59,20 +56,6 @@ func (hdlr *Handlers) handleRegister(
 		return
 	}

-	username := resolveUsername(
-		payload.Username, payload.Nick,
-	)
-
-	if !validUsernameRe.MatchString(username) {
-		hdlr.respondError(
-			writer, request,
-			"invalid username format",
-			http.StatusBadRequest,
-		)
-
-		return
-	}
-
 	if len(payload.Password) < minPasswordLength {
 		hdlr.respondError(
 			writer, request,
@@ -83,27 +66,11 @@ func (hdlr *Handlers) handleRegister(
 		return
 	}

-	hdlr.executeRegister(
-		writer, request,
-		payload.Nick, payload.Password, username,
-	)
-}
-
-func (hdlr *Handlers) executeRegister(
-	writer http.ResponseWriter,
-	request *http.Request,
-	nick, password, username string,
-) {
-	remoteIP := clientIP(request)
-
-	hostname := resolveHostname(
-		request.Context(), remoteIP,
-	)
-
 	sessionID, clientID, token, err :=
 		hdlr.params.Database.RegisterUser(
 			request.Context(),
-			nick, password, username, hostname, remoteIP,
+			payload.Nick,
+			payload.Password,
 		)
 	if err != nil {
 		hdlr.handleRegisterError(
@@ -113,14 +80,11 @@ func (hdlr *Handlers) executeRegister(
 		return
 	}

-	hdlr.stats.IncrSessions()
-	hdlr.stats.IncrConnections()
-
-	hdlr.deliverMOTD(request, clientID, sessionID, nick)
+	hdlr.deliverMOTD(request, clientID, sessionID, payload.Nick)

 	hdlr.respondJSON(writer, request, map[string]any{
 		"id":    sessionID,
-		"nick":  nick,
+		"nick":  payload.Nick,
 		"token": token,
 	}, http.StatusCreated)
 }
@@ -130,7 +94,7 @@ func (hdlr *Handlers) handleRegisterError(
 	request *http.Request,
 	err error,
 ) {
-	if db.IsUniqueConstraintError(err) {
+	if strings.Contains(err.Error(), "UNIQUE") {
 		hdlr.respondError(
 			writer, request,
 			"nick already taken",
@@ -198,18 +162,11 @@ func (hdlr *Handlers) handleLogin(
 		return
 	}

-	remoteIP := clientIP(request)
-
-	hostname := resolveHostname(
-		request.Context(), remoteIP,
-	)
-
 	sessionID, clientID, token, err :=
 		hdlr.params.Database.LoginUser(
 			request.Context(),
 			payload.Nick,
 			payload.Password,
-			remoteIP, hostname,
 		)
 	if err != nil {
 		hdlr.respondError(
@@ -221,8 +178,6 @@ func (hdlr *Handlers) handleLogin(
 		return
 	}

-	hdlr.stats.IncrConnections()
-
 	hdlr.deliverMOTD(
 		request, clientID, sessionID, payload.Nick,
 	)
--- a/internal/handlers/handlers.go
+++ b/internal/handlers/handlers.go
@@ -16,7 +16,6 @@ import (
 	"git.eeqj.de/sneak/neoirc/internal/hashcash"
 	"git.eeqj.de/sneak/neoirc/internal/healthcheck"
 	"git.eeqj.de/sneak/neoirc/internal/logger"
-	"git.eeqj.de/sneak/neoirc/internal/stats"
 	"go.uber.org/fx"
 )

@@ -31,10 +30,9 @@ type Params struct {
 	Config      *config.Config
 	Database    *db.Database
 	Healthcheck *healthcheck.Healthcheck
-	Stats       *stats.Tracker
 }

-const defaultIdleTimeout = 30 * 24 * time.Hour
+const defaultIdleTimeout = 24 * time.Hour

 // Handlers manages HTTP request handling.
 type Handlers struct {
@@ -43,7 +41,6 @@ type Handlers struct {
 	hc            *healthcheck.Healthcheck
 	broker        *broker.Broker
 	hashcashVal   *hashcash.Validator
-	stats         *stats.Tracker
 	cancelCleanup context.CancelFunc
 }

@@ -63,7 +60,6 @@ func New(
 		hc:          params.Healthcheck,
 		broker:      broker.New(),
 		hashcashVal: hashcash.NewValidator(resource),
-		stats:       params.Stats,
 	}

 	lifecycle.Append(fx.Hook{
@@ -212,77 +208,4 @@ func (hdlr *Handlers) runCleanup(
 			"deleted", deleted,
 		)
 	}
-
-	hdlr.pruneQueuesAndMessages(ctx)
-}
-
-// parseDurationConfig parses a Go duration string,
-// returning zero on empty input and logging on error.
-func (hdlr *Handlers) parseDurationConfig(
-	name, raw string,
-) time.Duration {
-	if raw == "" {
-		return 0
-	}
-
-	dur, err := time.ParseDuration(raw)
-	if err != nil {
-		hdlr.log.Error(
-			"invalid duration config, skipping",
-			"name", name, "value", raw, "error", err,
-		)
-
-		return 0
-	}
-
-	return dur
-}
-
-// pruneQueuesAndMessages removes old client output queue
-// entries per QUEUE_MAX_AGE and old messages per
-// MESSAGE_MAX_AGE.
-func (hdlr *Handlers) pruneQueuesAndMessages(
-	ctx context.Context,
-) {
-	queueMaxAge := hdlr.parseDurationConfig(
-		"QUEUE_MAX_AGE",
-		hdlr.params.Config.QueueMaxAge,
-	)
-	if queueMaxAge > 0 {
-		queueCutoff := time.Now().Add(-queueMaxAge)
-
-		pruned, err := hdlr.params.Database.
-			PruneOldQueueEntries(ctx, queueCutoff)
-		if err != nil {
-			hdlr.log.Error(
-				"client output queue pruning failed", "error", err,
-			)
-		} else if pruned > 0 {
-			hdlr.log.Info(
-				"pruned old client output queue entries",
-				"deleted", pruned,
-			)
-		}
-	}
-
-	messageMaxAge := hdlr.parseDurationConfig(
-		"MESSAGE_MAX_AGE",
-		hdlr.params.Config.MessageMaxAge,
-	)
-	if messageMaxAge > 0 {
-		msgCutoff := time.Now().Add(-messageMaxAge)
-
-		pruned, err := hdlr.params.Database.
-			PruneOldMessages(ctx, msgCutoff)
-		if err != nil {
-			hdlr.log.Error(
-				"message pruning failed", "error", err,
-			)
-		} else if pruned > 0 {
-			hdlr.log.Info(
-				"pruned old messages",
-				"deleted", pruned,
-			)
-		}
-	}
 }
--- a/internal/handlers/healthcheck.go
+++ b/internal/handlers/healthcheck.go
@@ -12,7 +12,7 @@ func (hdlr *Handlers) HandleHealthCheck() http.HandlerFunc {
 		writer http.ResponseWriter,
 		request *http.Request,
 	) {
-		resp := hdlr.hc.Healthcheck(request.Context())
+		resp := hdlr.hc.Healthcheck()
 		hdlr.respondJSON(writer, request, resp, httpStatusOK)
 	}
 }
--- a/internal/hashcash/hashcash_test.go
+++ b/internal/hashcash/hashcash_test.go
@@ -1,261 +0,0 @@
-package hashcash_test
-
-import (
-	"crypto/rand"
-	"crypto/sha256"
-	"encoding/hex"
-	"fmt"
-	"math/big"
-	"testing"
-	"time"
-
-	"git.eeqj.de/sneak/neoirc/internal/hashcash"
-)
-
-const testBits = 2
-
-// mintStampWithDate creates a valid hashcash stamp using
-// the given date string.
-func mintStampWithDate(
-	tb testing.TB,
-	bits int,
-	resource string,
-	date string,
-) string {
-	tb.Helper()
-
-	prefix := fmt.Sprintf(
-		"1:%d:%s:%s::", bits, date, resource,
-	)
-
-	for {
-		counterVal, err := rand.Int(
-			rand.Reader, big.NewInt(1<<48),
-		)
-		if err != nil {
-			tb.Fatalf("random counter: %v", err)
-		}
-
-		stamp := prefix + hex.EncodeToString(
-			counterVal.Bytes(),
-		)
-		hash := sha256.Sum256([]byte(stamp))
-
-		if hasLeadingZeroBits(hash[:], bits) {
-			return stamp
-		}
-	}
-}
-
-// hasLeadingZeroBits checks if hash has at least numBits
-// leading zero bits. Duplicated here for test minting.
-func hasLeadingZeroBits(
-	hash []byte,
-	numBits int,
-) bool {
-	fullBytes := numBits / 8
-	remainBits := numBits % 8
-
-	for idx := range fullBytes {
-		if hash[idx] != 0 {
-			return false
-		}
-	}
-
-	if remainBits > 0 && fullBytes < len(hash) {
-		mask := byte(0xFF << (8 - remainBits))
-
-		if hash[fullBytes]&mask != 0 {
-			return false
-		}
-	}
-
-	return true
-}
-
-func todayDate() string {
-	return time.Now().UTC().Format("060102")
-}
-
-func TestMintAndValidate(t *testing.T) {
-	t.Parallel()
-
-	validator := hashcash.NewValidator("test-resource")
-	stamp := mintStampWithDate(
-		t, testBits, "test-resource", todayDate(),
-	)
-
-	err := validator.Validate(stamp, testBits)
-	if err != nil {
-		t.Fatalf("valid stamp rejected: %v", err)
-	}
-}
-
-func TestReplayDetection(t *testing.T) {
-	t.Parallel()
-
-	validator := hashcash.NewValidator("test-resource")
-	stamp := mintStampWithDate(
-		t, testBits, "test-resource", todayDate(),
-	)
-
-	err := validator.Validate(stamp, testBits)
-	if err != nil {
-		t.Fatalf("first use failed: %v", err)
-	}
-
-	err = validator.Validate(stamp, testBits)
-	if err == nil {
-		t.Fatal("replay not detected")
-	}
-}
-
-func TestResourceMismatch(t *testing.T) {
-	t.Parallel()
-
-	validator := hashcash.NewValidator("correct-resource")
-	stamp := mintStampWithDate(
-		t, testBits, "wrong-resource", todayDate(),
-	)
-
-	err := validator.Validate(stamp, testBits)
-	if err == nil {
-		t.Fatal("expected resource mismatch error")
-	}
-}
-
-func TestInvalidStampFormat(t *testing.T) {
-	t.Parallel()
-
-	validator := hashcash.NewValidator("test-resource")
-
-	err := validator.Validate(
-		"not:a:valid:stamp", testBits,
-	)
-	if err == nil {
-		t.Fatal("expected error for bad format")
-	}
-}
-
-func TestBadVersion(t *testing.T) {
-	t.Parallel()
-
-	validator := hashcash.NewValidator("test-resource")
-	stamp := fmt.Sprintf(
-		"2:%d:%s:%s::abc123",
-		testBits, todayDate(), "test-resource",
-	)
-
-	err := validator.Validate(stamp, testBits)
-	if err == nil {
-		t.Fatal("expected bad version error")
-	}
-}
-
-func TestInsufficientDifficulty(t *testing.T) {
-	t.Parallel()
-
-	validator := hashcash.NewValidator("test-resource")
-	// Claimed bits=1, but we require testBits=2.
-	stamp := fmt.Sprintf(
-		"1:1:%s:%s::counter",
-		todayDate(), "test-resource",
-	)
-
-	err := validator.Validate(stamp, testBits)
-	if err == nil {
-		t.Fatal("expected insufficient bits error")
-	}
-}
-
-func TestExpiredStamp(t *testing.T) {
-	t.Parallel()
-
-	validator := hashcash.NewValidator("test-resource")
-	oldDate := time.Now().Add(-72 * time.Hour).
-		UTC().Format("060102")
-	stamp := mintStampWithDate(
-		t, testBits, "test-resource", oldDate,
-	)
-
-	err := validator.Validate(stamp, testBits)
-	if err == nil {
-		t.Fatal("expected expired stamp error")
-	}
-}
-
-func TestZeroBitsSkipsValidation(t *testing.T) {
-	t.Parallel()
-
-	validator := hashcash.NewValidator("test-resource")
-
-	err := validator.Validate("garbage", 0)
-	if err != nil {
-		t.Fatalf("zero bits should skip: %v", err)
-	}
-}
-
-func TestLongDateFormat(t *testing.T) {
-	t.Parallel()
-
-	validator := hashcash.NewValidator("test-resource")
-	longDate := time.Now().UTC().Format("060102150405")
-	stamp := mintStampWithDate(
-		t, testBits, "test-resource", longDate,
-	)
-
-	err := validator.Validate(stamp, testBits)
-	if err != nil {
-		t.Fatalf("long date stamp rejected: %v", err)
-	}
-}
-
-func TestBadDateFormat(t *testing.T) {
-	t.Parallel()
-
-	validator := hashcash.NewValidator("test-resource")
-	stamp := fmt.Sprintf(
-		"1:%d:BADDATE:%s::counter",
-		testBits, "test-resource",
-	)
-
-	err := validator.Validate(stamp, testBits)
-	if err == nil {
-		t.Fatal("expected bad date error")
-	}
-}
-
-func TestMultipleUniqueStamps(t *testing.T) {
-	t.Parallel()
-
-	validator := hashcash.NewValidator("test-resource")
-
-	for range 5 {
-		stamp := mintStampWithDate(
-			t, testBits, "test-resource", todayDate(),
-		)
-
-		err := validator.Validate(stamp, testBits)
-		if err != nil {
-			t.Fatalf("unique stamp rejected: %v", err)
-		}
-	}
-}
-
-func TestHigherBitsStillValid(t *testing.T) {
-	t.Parallel()
-
-	// Mint with bits=4 but validate requiring only 2.
-	validator := hashcash.NewValidator("test-resource")
-	stamp := mintStampWithDate(
-		t, 4, "test-resource", todayDate(),
-	)
-
-	err := validator.Validate(stamp, testBits)
-	if err != nil {
-		t.Fatalf(
-			"higher-difficulty stamp rejected: %v",
-			err,
-		)
-	}
-}
--- a/internal/healthcheck/healthcheck.go
+++ b/internal/healthcheck/healthcheck.go
@@ -10,7 +10,6 @@ import (
 	"git.eeqj.de/sneak/neoirc/internal/db"
 	"git.eeqj.de/sneak/neoirc/internal/globals"
 	"git.eeqj.de/sneak/neoirc/internal/logger"
-	"git.eeqj.de/sneak/neoirc/internal/stats"
 	"go.uber.org/fx"
 )

@@ -22,7 +21,6 @@ type Params struct {
 	Config   *config.Config
 	Logger   *logger.Logger
 	Database *db.Database
-	Stats    *stats.Tracker
 }

 // Healthcheck tracks server uptime and provides health status.
@@ -66,22 +64,11 @@ type Response struct {
 	Version       string `json:"version"`
 	Appname       string `json:"appname"`
 	Maintenance   bool   `json:"maintenanceMode"`
-
-	// Runtime statistics.
-	Sessions             int64 `json:"sessions"`
-	Clients              int64 `json:"clients"`
-	QueuedLines          int64 `json:"queuedLines"`
-	Channels             int64 `json:"channels"`
-	ConnectionsSinceBoot int64 `json:"connectionsSinceBoot"`
-	SessionsSinceBoot    int64 `json:"sessionsSinceBoot"`
-	MessagesSinceBoot    int64 `json:"messagesSinceBoot"`
 }

 // Healthcheck returns the current health status of the server.
-func (hcheck *Healthcheck) Healthcheck(
-	ctx context.Context,
-) *Response {
-	resp := &Response{
+func (hcheck *Healthcheck) Healthcheck() *Response {
+	return &Response{
 		Status:        "ok",
 		Now:           time.Now().UTC().Format(time.RFC3339Nano),
 		UptimeSeconds: int64(hcheck.uptime().Seconds()),
@@ -89,64 +76,6 @@ func (hcheck *Healthcheck) Healthcheck(
 		Appname:       hcheck.params.Globals.Appname,
 		Version:       hcheck.params.Globals.Version,
 		Maintenance:   hcheck.params.Config.MaintenanceMode,
-
-		Sessions:             0,
-		Clients:              0,
-		QueuedLines:          0,
-		Channels:             0,
-		ConnectionsSinceBoot: hcheck.params.Stats.ConnectionsSinceBoot(),
-		SessionsSinceBoot:    hcheck.params.Stats.SessionsSinceBoot(),
-		MessagesSinceBoot:    hcheck.params.Stats.MessagesSinceBoot(),
-	}
-
-	hcheck.populateDBStats(ctx, resp)
-
-	return resp
-}
-
-// populateDBStats fills in database-derived counters.
-func (hcheck *Healthcheck) populateDBStats(
-	ctx context.Context,
-	resp *Response,
-) {
-	sessions, err := hcheck.params.Database.GetUserCount(ctx)
-	if err != nil {
-		hcheck.log.Error(
-			"healthcheck: session count failed",
-			"error", err,
-		)
-	} else {
-		resp.Sessions = sessions
-	}
-
-	clients, err := hcheck.params.Database.GetClientCount(ctx)
-	if err != nil {
-		hcheck.log.Error(
-			"healthcheck: client count failed",
-			"error", err,
-		)
-	} else {
-		resp.Clients = clients
-	}
-
-	queued, err := hcheck.params.Database.GetQueueEntryCount(ctx)
-	if err != nil {
-		hcheck.log.Error(
-			"healthcheck: queue entry count failed",
-			"error", err,
-		)
-	} else {
-		resp.QueuedLines = queued
-	}
-
-	channels, err := hcheck.params.Database.GetChannelCount(ctx)
-	if err != nil {
-		hcheck.log.Error(
-			"healthcheck: channel count failed",
-			"error", err,
-		)
-	} else {
-		resp.Channels = channels
 	}
 }

--- a/internal/irc/commands.go
+++ b/internal/irc/commands.go
@@ -2,7 +2,6 @@ package irc

 // IRC command names (RFC 1459 / RFC 2812).
 const (
-	CmdAway    = "AWAY"
 	CmdJoin    = "JOIN"
 	CmdList    = "LIST"
 	CmdLusers  = "LUSERS"
--- a/internal/irc/numerics.go
+++ b/internal/irc/numerics.go
@@ -0,0 +1,150 @@
+// Package irc provides constants and utilities for the
+// IRC protocol, including numeric reply codes from
+// RFC 1459 and RFC 2812, and standard command names.
+package irc
+
+// Connection registration replies (001-005).
+const (
+	RplWelcome  = 1
+	RplYourHost = 2
+	RplCreated  = 3
+	RplMyInfo   = 4
+	RplIsupport = 5
+)
+
+// Command responses (200-399).
+const (
+	RplUmodeIs       = 221
+	RplLuserClient   = 251
+	RplLuserOp       = 252
+	RplLuserUnknown  = 253
+	RplLuserChannels = 254
+	RplLuserMe       = 255
+	RplAway          = 301
+	RplUserHost      = 302
+	RplIson          = 303
+	RplUnaway        = 305
+	RplNowAway       = 306
+	RplWhoisUser     = 311
+	RplWhoisServer   = 312
+	RplWhoisOperator = 313
+	RplEndOfWho      = 315
+	RplWhoisIdle     = 317
+	RplEndOfWhois    = 318
+	RplWhoisChannels = 319
+	RplList          = 322
+	RplListEnd       = 323
+	RplChannelModeIs = 324
+	RplCreationTime  = 329
+	RplNoTopic       = 331
+	RplTopic         = 332
+	RplTopicWhoTime  = 333
+	RplInviting      = 341
+	RplWhoReply      = 352
+	RplNamReply      = 353
+	RplEndOfNames    = 366
+	RplBanList       = 367
+	RplEndOfBanList  = 368
+	RplMotd          = 372
+	RplMotdStart     = 375
+	RplEndOfMotd     = 376
+)
+
+// Error replies (400-599).
+const (
+	ErrNoSuchNick        = 401
+	ErrNoSuchServer      = 402
+	ErrNoSuchChannel     = 403
+	ErrCannotSendToChan  = 404
+	ErrTooManyChannels   = 405
+	ErrNoRecipient       = 411
+	ErrNoTextToSend      = 412
+	ErrUnknownCommand    = 421
+	ErrNoNicknameGiven   = 431
+	ErrErroneusNickname  = 432
+	ErrNicknameInUse     = 433
+	ErrUserNotInChannel  = 441
+	ErrNotOnChannel      = 442
+	ErrNotRegistered     = 451
+	ErrNeedMoreParams    = 461
+	ErrAlreadyRegistered = 462
+	ErrChannelIsFull     = 471
+	ErrInviteOnlyChan    = 473
+	ErrBannedFromChan    = 474
+	ErrBadChannelKey     = 475
+	ErrChanOpPrivsNeeded = 482
+)
+
+// names maps numeric codes to their standard IRC names.
+//
+//nolint:gochecknoglobals
+var names = map[int]string{
+	RplWelcome:       "RPL_WELCOME",
+	RplYourHost:      "RPL_YOURHOST",
+	RplCreated:       "RPL_CREATED",
+	RplMyInfo:        "RPL_MYINFO",
+	RplIsupport:      "RPL_ISUPPORT",
+	RplUmodeIs:       "RPL_UMODEIS",
+	RplLuserClient:   "RPL_LUSERCLIENT",
+	RplLuserOp:       "RPL_LUSEROP",
+	RplLuserUnknown:  "RPL_LUSERUNKNOWN",
+	RplLuserChannels: "RPL_LUSERCHANNELS",
+	RplLuserMe:       "RPL_LUSERME",
+	RplAway:          "RPL_AWAY",
+	RplUserHost:      "RPL_USERHOST",
+	RplIson:          "RPL_ISON",
+	RplUnaway:        "RPL_UNAWAY",
+	RplNowAway:       "RPL_NOWAWAY",
+	RplWhoisUser:     "RPL_WHOISUSER",
+	RplWhoisServer:   "RPL_WHOISSERVER",
+	RplWhoisOperator: "RPL_WHOISOPERATOR",
+	RplEndOfWho:      "RPL_ENDOFWHO",
+	RplWhoisIdle:     "RPL_WHOISIDLE",
+	RplEndOfWhois:    "RPL_ENDOFWHOIS",
+	RplWhoisChannels: "RPL_WHOISCHANNELS",
+	RplList:          "RPL_LIST",
+	RplListEnd:       "RPL_LISTEND", //nolint:misspell
+	RplChannelModeIs: "RPL_CHANNELMODEIS",
+	RplCreationTime:  "RPL_CREATIONTIME",
+	RplNoTopic:       "RPL_NOTOPIC",
+	RplTopic:         "RPL_TOPIC",
+	RplTopicWhoTime:  "RPL_TOPICWHOTIME",
+	RplInviting:      "RPL_INVITING",
+	RplWhoReply:      "RPL_WHOREPLY",
+	RplNamReply:      "RPL_NAMREPLY",
+	RplEndOfNames:    "RPL_ENDOFNAMES",
+	RplBanList:       "RPL_BANLIST",
+	RplEndOfBanList:  "RPL_ENDOFBANLIST",
+	RplMotd:          "RPL_MOTD",
+	RplMotdStart:     "RPL_MOTDSTART",
+	RplEndOfMotd:     "RPL_ENDOFMOTD",
+
+	ErrNoSuchNick:        "ERR_NOSUCHNICK",
+	ErrNoSuchServer:      "ERR_NOSUCHSERVER",
+	ErrNoSuchChannel:     "ERR_NOSUCHCHANNEL",
+	ErrCannotSendToChan:  "ERR_CANNOTSENDTOCHAN",
+	ErrTooManyChannels:   "ERR_TOOMANYCHANNELS",
+	ErrNoRecipient:       "ERR_NORECIPIENT",
+	ErrNoTextToSend:      "ERR_NOTEXTTOSEND",
+	ErrUnknownCommand:    "ERR_UNKNOWNCOMMAND",
+	ErrNoNicknameGiven:   "ERR_NONICKNAMEGIVEN",
+	ErrErroneusNickname:  "ERR_ERRONEUSNICKNAME",
+	ErrNicknameInUse:     "ERR_NICKNAMEINUSE",
+	ErrUserNotInChannel:  "ERR_USERNOTINCHANNEL",
+	ErrNotOnChannel:      "ERR_NOTONCHANNEL",
+	ErrNotRegistered:     "ERR_NOTREGISTERED",
+	ErrNeedMoreParams:    "ERR_NEEDMOREPARAMS",
+	ErrAlreadyRegistered: "ERR_ALREADYREGISTERED",
+	ErrChannelIsFull:     "ERR_CHANNELISFULL",
+	ErrInviteOnlyChan:    "ERR_INVITEONLYCHAN",
+	ErrBannedFromChan:    "ERR_BANNEDFROMCHAN",
+	ErrBadChannelKey:     "ERR_BADCHANNELKEY",
+	ErrChanOpPrivsNeeded: "ERR_CHANOPRIVSNEEDED",
+}
+
+// Name returns the standard IRC name for a numeric code
+// (e.g., Name(2) returns "RPL_YOURHOST"). Returns an
+// empty string if the code is unknown.
+func Name(code int) string {
+	return names[code]
+}
--- a/internal/middleware/middleware.go
+++ b/internal/middleware/middleware.go
@@ -11,7 +11,7 @@ import (
 	"git.eeqj.de/sneak/neoirc/internal/globals"
 	"git.eeqj.de/sneak/neoirc/internal/logger"
 	basicauth "github.com/99designs/basicauth-go"
-	chimw "github.com/go-chi/chi/v5/middleware"
+	chimw "github.com/go-chi/chi/middleware"
 	"github.com/go-chi/cors"
 	metrics "github.com/slok/go-http-metrics/metrics/prometheus"
 	ghmm "github.com/slok/go-http-metrics/middleware"
@@ -142,6 +142,20 @@ func (mware *Middleware) CORS() func(http.Handler) http.Handler {
 	})
 }

+// Auth returns middleware that performs authentication.
+func (mware *Middleware) Auth() func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(
+			func(
+				writer http.ResponseWriter,
+				request *http.Request,
+			) {
+				mware.log.Info("AUTH: before request")
+				next.ServeHTTP(writer, request)
+			})
+	}
+}
+
 // Metrics returns middleware that records HTTP metrics.
 func (mware *Middleware) Metrics() func(http.Handler) http.Handler {
 	metricsMiddleware := ghmm.New(ghmm.Config{ //nolint:exhaustruct // optional fields
--- a/internal/server/routes.go
+++ b/internal/server/routes.go
@@ -8,8 +8,8 @@ import (
 	"git.eeqj.de/sneak/neoirc/web"

 	sentryhttp "github.com/getsentry/sentry-go/http"
-	"github.com/go-chi/chi/v5"
-	"github.com/go-chi/chi/v5/middleware"
+	"github.com/go-chi/chi"
+	"github.com/go-chi/chi/middleware"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/spf13/viper"
 )
--- a/internal/server/server.go
+++ b/internal/server/server.go
@@ -20,7 +20,7 @@ import (
 	"go.uber.org/fx"

 	"github.com/getsentry/sentry-go"
-	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/chi"

 	_ "github.com/joho/godotenv/autoload" // loads .env file
 )
--- a/internal/stats/stats.go
+++ b/internal/stats/stats.go
@@ -1,52 +0,0 @@
-// Package stats tracks runtime statistics since server boot.
-package stats
-
-import (
-	"sync/atomic"
-)
-
-// Tracker holds atomic counters for runtime statistics
-// that accumulate since the server started.
-type Tracker struct {
-	connectionsSinceBoot atomic.Int64
-	sessionsSinceBoot    atomic.Int64
-	messagesSinceBoot    atomic.Int64
-}
-
-// New creates a new Tracker with all counters at zero.
-func New() *Tracker {
-	return &Tracker{} //nolint:exhaustruct // atomic fields have zero-value defaults
-}
-
-// IncrConnections increments the total connection count.
-func (t *Tracker) IncrConnections() {
-	t.connectionsSinceBoot.Add(1)
-}
-
-// IncrSessions increments the total session count.
-func (t *Tracker) IncrSessions() {
-	t.sessionsSinceBoot.Add(1)
-}
-
-// IncrMessages increments the total PRIVMSG/NOTICE count.
-func (t *Tracker) IncrMessages() {
-	t.messagesSinceBoot.Add(1)
-}
-
-// ConnectionsSinceBoot returns the total number of
-// client connections since boot.
-func (t *Tracker) ConnectionsSinceBoot() int64 {
-	return t.connectionsSinceBoot.Load()
-}
-
-// SessionsSinceBoot returns the total number of sessions
-// created since boot.
-func (t *Tracker) SessionsSinceBoot() int64 {
-	return t.sessionsSinceBoot.Load()
-}
-
-// MessagesSinceBoot returns the total number of
-// PRIVMSG/NOTICE messages sent since boot.
-func (t *Tracker) MessagesSinceBoot() int64 {
-	return t.messagesSinceBoot.Load()
-}
--- a/internal/stats/stats_test.go
+++ b/internal/stats/stats_test.go
@@ -1,117 +0,0 @@
-package stats_test
-
-import (
-	"testing"
-
-	"git.eeqj.de/sneak/neoirc/internal/stats"
-)
-
-func TestNew(t *testing.T) {
-	t.Parallel()
-
-	tracker := stats.New()
-	if tracker == nil {
-		t.Fatal("expected non-nil tracker")
-	}
-
-	if tracker.ConnectionsSinceBoot() != 0 {
-		t.Errorf(
-			"expected 0 connections, got %d",
-			tracker.ConnectionsSinceBoot(),
-		)
-	}
-
-	if tracker.SessionsSinceBoot() != 0 {
-		t.Errorf(
-			"expected 0 sessions, got %d",
-			tracker.SessionsSinceBoot(),
-		)
-	}
-
-	if tracker.MessagesSinceBoot() != 0 {
-		t.Errorf(
-			"expected 0 messages, got %d",
-			tracker.MessagesSinceBoot(),
-		)
-	}
-}
-
-func TestIncrConnections(t *testing.T) {
-	t.Parallel()
-
-	tracker := stats.New()
-
-	tracker.IncrConnections()
-	tracker.IncrConnections()
-	tracker.IncrConnections()
-
-	got := tracker.ConnectionsSinceBoot()
-	if got != 3 {
-		t.Errorf(
-			"expected 3 connections, got %d", got,
-		)
-	}
-}
-
-func TestIncrSessions(t *testing.T) {
-	t.Parallel()
-
-	tracker := stats.New()
-
-	tracker.IncrSessions()
-	tracker.IncrSessions()
-
-	got := tracker.SessionsSinceBoot()
-	if got != 2 {
-		t.Errorf(
-			"expected 2 sessions, got %d", got,
-		)
-	}
-}
-
-func TestIncrMessages(t *testing.T) {
-	t.Parallel()
-
-	tracker := stats.New()
-
-	tracker.IncrMessages()
-
-	got := tracker.MessagesSinceBoot()
-	if got != 1 {
-		t.Errorf(
-			"expected 1 message, got %d", got,
-		)
-	}
-}
-
-func TestCountersAreIndependent(t *testing.T) {
-	t.Parallel()
-
-	tracker := stats.New()
-
-	tracker.IncrConnections()
-	tracker.IncrSessions()
-	tracker.IncrMessages()
-	tracker.IncrMessages()
-
-	if tracker.ConnectionsSinceBoot() != 1 {
-		t.Errorf(
-			"expected 1 connection, got %d",
-			tracker.ConnectionsSinceBoot(),
-		)
-	}
-
-	if tracker.SessionsSinceBoot() != 1 {
-		t.Errorf(
-			"expected 1 session, got %d",
-			tracker.SessionsSinceBoot(),
-		)
-	}
-
-	if tracker.MessagesSinceBoot() != 2 {
-		t.Errorf(
-			"expected 2 messages, got %d",
-			tracker.MessagesSinceBoot(),
-		)
-	}
-}
--- a/pkg/irc/numerics.go
+++ b/pkg/irc/numerics.go
@@ -1,391 +0,0 @@
-// Package irc provides constants and utilities for the
-// IRC protocol, including numeric reply codes from
-// RFC 1459 and RFC 2812, and standard command names.
-package irc
-
-import (
-	"errors"
-	"fmt"
-)
-
-// IRCMessageType represents an IRC numeric reply or error code.
-type IRCMessageType int //nolint:revive // Name requested by project owner.
-
-// Name returns the standard IRC name for this numeric code
-// (e.g., IRCMessageType(252).Name() returns "RPL_LUSEROP").
-// Returns an empty string if the code is unknown.
-func (t IRCMessageType) Name() string {
-	return names[t]
-}
-
-// String returns the name and numeric code in angle brackets
-// (e.g., IRCMessageType(252).String() returns "RPL_LUSEROP <252>").
-// If the code is unknown, returns "UNKNOWN <NNN>".
-func (t IRCMessageType) String() string {
-	n := names[t]
-	if n == "" {
-		n = "UNKNOWN"
-	}
-
-	return fmt.Sprintf("%s <%03d>", n, int(t))
-}
-
-// Code returns the three-digit zero-padded string representation
-// of the numeric code (e.g., IRCMessageType(252).Code() returns "252").
-func (t IRCMessageType) Code() string {
-	return fmt.Sprintf("%03d", int(t))
-}
-
-// Int returns the bare integer value of the numeric code.
-func (t IRCMessageType) Int() int {
-	return int(t)
-}
-
-// ErrUnknownNumeric is returned by FromInt when the numeric code is not recognized.
-var ErrUnknownNumeric = errors.New("unknown IRC numeric code")
-
-// FromInt converts an integer to an IRCMessageType, returning an error
-// if the numeric code is not a known IRC reply or error code.
-func FromInt(n int) (IRCMessageType, error) {
-	t := IRCMessageType(n)
-	if _, ok := names[t]; !ok {
-		return 0, fmt.Errorf("%w: %d", ErrUnknownNumeric, n)
-	}
-
-	return t, nil
-}
-
-// Connection registration replies (001-005).
-const (
-	RplWelcome  IRCMessageType = 1
-	RplYourHost IRCMessageType = 2
-	RplCreated  IRCMessageType = 3
-	RplMyInfo   IRCMessageType = 4
-	RplBounce   IRCMessageType = 5 // RFC 2812; also known as RPL_ISUPPORT in practice
-	RplIsupport IRCMessageType = 5 // De-facto standard (same numeric as RplBounce)
-)
-
-// Command responses (200-399).
-const (
-	// RFC 2812 trace/stats/links replies (200-219).
-	RplTraceLink       IRCMessageType = 200
-	RplTraceConnecting IRCMessageType = 201
-	RplTraceHandshake  IRCMessageType = 202
-	RplTraceUnknown    IRCMessageType = 203
-	RplTraceOperator   IRCMessageType = 204
-	RplTraceUser       IRCMessageType = 205
-	RplTraceServer     IRCMessageType = 206
-	RplTraceService    IRCMessageType = 207
-	RplTraceNewType    IRCMessageType = 208
-	RplTraceClass      IRCMessageType = 209
-	RplStatsLinkInfo   IRCMessageType = 211
-	RplStatsCommands   IRCMessageType = 212
-	RplStatsCLine      IRCMessageType = 213
-	RplStatsNLine      IRCMessageType = 214
-	RplStatsILine      IRCMessageType = 215
-	RplStatsKLine      IRCMessageType = 216
-	RplStatsQLine      IRCMessageType = 217
-	RplStatsYLine      IRCMessageType = 218
-	RplEndOfStats      IRCMessageType = 219
-
-	RplUmodeIs      IRCMessageType = 221
-	RplServList     IRCMessageType = 234
-	RplServListEnd  IRCMessageType = 235
-	RplStatsLLine   IRCMessageType = 241
-	RplStatsUptime  IRCMessageType = 242
-	RplStatsOLine   IRCMessageType = 243
-	RplStatsHLine   IRCMessageType = 244
-	RplLuserClient  IRCMessageType = 251
-	RplLuserOp      IRCMessageType = 252
-	RplLuserUnknown IRCMessageType = 253
-
-	RplLuserChannels IRCMessageType = 254
-	RplLuserMe       IRCMessageType = 255
-	RplAdminMe       IRCMessageType = 256
-	RplAdminLoc1     IRCMessageType = 257
-	RplAdminLoc2     IRCMessageType = 258
-	RplAdminEmail    IRCMessageType = 259
-	RplTraceLog      IRCMessageType = 261
-	RplTraceEnd      IRCMessageType = 262
-	RplTryAgain      IRCMessageType = 263
-
-	RplAway          IRCMessageType = 301
-	RplUserHost      IRCMessageType = 302
-	RplIson          IRCMessageType = 303
-	RplUnaway        IRCMessageType = 305
-	RplNowAway       IRCMessageType = 306
-	RplWhoisUser     IRCMessageType = 311
-	RplWhoisServer   IRCMessageType = 312
-	RplWhoisOperator IRCMessageType = 313
-	RplWhoWasUser    IRCMessageType = 314
-	RplEndOfWho      IRCMessageType = 315
-	RplWhoisIdle     IRCMessageType = 317
-	RplEndOfWhois    IRCMessageType = 318
-	RplWhoisChannels IRCMessageType = 319
-	RplListStart     IRCMessageType = 321
-	RplList          IRCMessageType = 322
-	RplListEnd       IRCMessageType = 323
-	RplChannelModeIs IRCMessageType = 324
-
-	RplUniqOpIs        IRCMessageType = 325
-	RplCreationTime    IRCMessageType = 329
-	RplNoTopic         IRCMessageType = 331
-	RplTopic           IRCMessageType = 332
-	RplTopicWhoTime    IRCMessageType = 333
-	RplInviting        IRCMessageType = 341
-	RplSummoning       IRCMessageType = 342
-	RplInviteList      IRCMessageType = 346
-	RplEndOfInviteList IRCMessageType = 347
-	RplExceptList      IRCMessageType = 348
-	RplEndOfExceptList IRCMessageType = 349
-	RplVersion         IRCMessageType = 351
-	RplWhoReply        IRCMessageType = 352
-	RplNamReply        IRCMessageType = 353
-	RplLinks           IRCMessageType = 364
-	RplEndOfLinks      IRCMessageType = 365
-	RplEndOfNames      IRCMessageType = 366
-	RplBanList         IRCMessageType = 367
-	RplEndOfBanList    IRCMessageType = 368
-	RplEndOfWhowas     IRCMessageType = 369
-	RplInfo            IRCMessageType = 371
-	RplMotd            IRCMessageType = 372
-	RplEndOfInfo       IRCMessageType = 374
-	RplMotdStart       IRCMessageType = 375
-	RplEndOfMotd       IRCMessageType = 376
-	RplYoureOper       IRCMessageType = 381
-	RplRehashing       IRCMessageType = 382
-	RplYoureService    IRCMessageType = 383
-	RplTime            IRCMessageType = 391
-	RplUsersStart      IRCMessageType = 392
-	RplUsers           IRCMessageType = 393
-	RplEndOfUsers      IRCMessageType = 394
-	RplNoUsers         IRCMessageType = 395
-)
-
-// Error replies (400-599).
-const (
-	ErrNoSuchNick       IRCMessageType = 401
-	ErrNoSuchServer     IRCMessageType = 402
-	ErrNoSuchChannel    IRCMessageType = 403
-	ErrCannotSendToChan IRCMessageType = 404
-	ErrTooManyChannels  IRCMessageType = 405
-	ErrWasNoSuchNick    IRCMessageType = 406
-	ErrTooManyTargets   IRCMessageType = 407
-	ErrNoSuchService    IRCMessageType = 408
-	ErrNoOrigin         IRCMessageType = 409
-	ErrNoRecipient      IRCMessageType = 411
-	ErrNoTextToSend     IRCMessageType = 412
-	ErrNoTopLevel       IRCMessageType = 413
-	ErrWildTopLevel     IRCMessageType = 414
-	ErrBadMask          IRCMessageType = 415
-	ErrUnknownCommand   IRCMessageType = 421
-	ErrNoMotd           IRCMessageType = 422
-	ErrNoAdminInfo      IRCMessageType = 423
-	ErrFileError        IRCMessageType = 424
-	ErrNoNicknameGiven  IRCMessageType = 431
-	ErrErroneusNickname IRCMessageType = 432
-	ErrNicknameInUse    IRCMessageType = 433
-	ErrNickCollision    IRCMessageType = 436
-	ErrUnavailResource  IRCMessageType = 437
-
-	ErrUserNotInChannel  IRCMessageType = 441
-	ErrNotOnChannel      IRCMessageType = 442
-	ErrUserOnChannel     IRCMessageType = 443
-	ErrNoLogin           IRCMessageType = 444
-	ErrSummonDisabled    IRCMessageType = 445
-	ErrUsersDisabled     IRCMessageType = 446
-	ErrNotRegistered     IRCMessageType = 451
-	ErrNeedMoreParams    IRCMessageType = 461
-	ErrAlreadyRegistered IRCMessageType = 462
-	ErrNoPermForHost     IRCMessageType = 463
-	ErrPasswdMismatch    IRCMessageType = 464
-	ErrYoureBannedCreep  IRCMessageType = 465
-	ErrYouWillBeBanned   IRCMessageType = 466
-	ErrKeySet            IRCMessageType = 467
-	ErrChannelIsFull     IRCMessageType = 471
-	ErrUnknownMode       IRCMessageType = 472
-	ErrInviteOnlyChan    IRCMessageType = 473
-	ErrBannedFromChan    IRCMessageType = 474
-	ErrBadChannelKey     IRCMessageType = 475
-	ErrBadChanMask       IRCMessageType = 476
-	ErrNoChanModes       IRCMessageType = 477
-	ErrBanListFull       IRCMessageType = 478
-	ErrNoPrivileges      IRCMessageType = 481
-	ErrChanOpPrivsNeeded IRCMessageType = 482
-	ErrCantKillServer    IRCMessageType = 483
-	ErrRestricted        IRCMessageType = 484
-	ErrUniqOpPrivsNeeded IRCMessageType = 485
-	ErrNoOperHost        IRCMessageType = 491
-
-	ErrUmodeUnknownFlag IRCMessageType = 501
-	ErrUsersDoNotMatch  IRCMessageType = 502
-)
-
-// names maps numeric codes to their standard IRC names.
-//
-//nolint:gochecknoglobals
-var names = map[IRCMessageType]string{
-	RplWelcome:  "RPL_WELCOME",
-	RplYourHost: "RPL_YOURHOST",
-	RplCreated:  "RPL_CREATED",
-	RplMyInfo:   "RPL_MYINFO",
-	RplBounce:   "RPL_BOUNCE",
-
-	RplTraceLink:       "RPL_TRACELINK",
-	RplTraceConnecting: "RPL_TRACECONNECTING",
-	RplTraceHandshake:  "RPL_TRACEHANDSHAKE",
-	RplTraceUnknown:    "RPL_TRACEUNKNOWN",
-	RplTraceOperator:   "RPL_TRACEOPERATOR",
-	RplTraceUser:       "RPL_TRACEUSER",
-	RplTraceServer:     "RPL_TRACESERVER",
-	RplTraceService:    "RPL_TRACESERVICE",
-	RplTraceNewType:    "RPL_TRACENEWTYPE",
-	RplTraceClass:      "RPL_TRACECLASS",
-	RplStatsLinkInfo:   "RPL_STATSLINKINFO",
-	RplStatsCommands:   "RPL_STATSCOMMANDS",
-	RplStatsCLine:      "RPL_STATSCLINE",
-	RplStatsNLine:      "RPL_STATSNLINE",
-	RplStatsILine:      "RPL_STATSILINE",
-	RplStatsKLine:      "RPL_STATSKLINE",
-	RplStatsQLine:      "RPL_STATSQLINE",
-	RplStatsYLine:      "RPL_STATSYLINE",
-	RplEndOfStats:      "RPL_ENDOFSTATS",
-
-	RplUmodeIs:      "RPL_UMODEIS",
-	RplServList:     "RPL_SERVLIST",
-	RplServListEnd:  "RPL_SERVLISTEND",
-	RplStatsLLine:   "RPL_STATSLLINE",
-	RplStatsUptime:  "RPL_STATSUPTIME",
-	RplStatsOLine:   "RPL_STATSOLINE",
-	RplStatsHLine:   "RPL_STATSHLINE",
-	RplLuserClient:  "RPL_LUSERCLIENT",
-	RplLuserOp:      "RPL_LUSEROP",
-	RplLuserUnknown: "RPL_LUSERUNKNOWN",
-
-	RplLuserChannels: "RPL_LUSERCHANNELS",
-	RplLuserMe:       "RPL_LUSERME",
-	RplAdminMe:       "RPL_ADMINME",
-	RplAdminLoc1:     "RPL_ADMINLOC1",
-	RplAdminLoc2:     "RPL_ADMINLOC2",
-	RplAdminEmail:    "RPL_ADMINEMAIL",
-	RplTraceLog:      "RPL_TRACELOG",
-	RplTraceEnd:      "RPL_TRACEEND",
-	RplTryAgain:      "RPL_TRYAGAIN",
-
-	RplAway:          "RPL_AWAY",
-	RplUserHost:      "RPL_USERHOST",
-	RplIson:          "RPL_ISON",
-	RplUnaway:        "RPL_UNAWAY",
-	RplNowAway:       "RPL_NOWAWAY",
-	RplWhoisUser:     "RPL_WHOISUSER",
-	RplWhoisServer:   "RPL_WHOISSERVER",
-	RplWhoisOperator: "RPL_WHOISOPERATOR",
-	RplWhoWasUser:    "RPL_WHOWASUSER",
-	RplEndOfWho:      "RPL_ENDOFWHO",
-	RplWhoisIdle:     "RPL_WHOISIDLE",
-	RplEndOfWhois:    "RPL_ENDOFWHOIS",
-	RplWhoisChannels: "RPL_WHOISCHANNELS",
-	RplListStart:     "RPL_LISTSTART",
-	RplList:          "RPL_LIST",
-	RplListEnd:       "RPL_LISTEND", //nolint:misspell
-	RplChannelModeIs: "RPL_CHANNELMODEIS",
-
-	RplUniqOpIs:        "RPL_UNIQOPIS",
-	RplCreationTime:    "RPL_CREATIONTIME",
-	RplNoTopic:         "RPL_NOTOPIC",
-	RplTopic:           "RPL_TOPIC",
-	RplTopicWhoTime:    "RPL_TOPICWHOTIME",
-	RplInviting:        "RPL_INVITING",
-	RplSummoning:       "RPL_SUMMONING",
-	RplInviteList:      "RPL_INVITELIST",
-	RplEndOfInviteList: "RPL_ENDOFINVITELIST",
-	RplExceptList:      "RPL_EXCEPTLIST",
-	RplEndOfExceptList: "RPL_ENDOFEXCEPTLIST",
-	RplVersion:         "RPL_VERSION",
-	RplWhoReply:        "RPL_WHOREPLY",
-	RplNamReply:        "RPL_NAMREPLY",
-	RplLinks:           "RPL_LINKS",
-	RplEndOfLinks:      "RPL_ENDOFLINKS",
-	RplEndOfNames:      "RPL_ENDOFNAMES",
-	RplBanList:         "RPL_BANLIST",
-	RplEndOfBanList:    "RPL_ENDOFBANLIST",
-	RplEndOfWhowas:     "RPL_ENDOFWHOWAS",
-	RplInfo:            "RPL_INFO",
-	RplMotd:            "RPL_MOTD",
-	RplEndOfInfo:       "RPL_ENDOFINFO",
-	RplMotdStart:       "RPL_MOTDSTART",
-	RplEndOfMotd:       "RPL_ENDOFMOTD",
-	RplYoureOper:       "RPL_YOUREOPER",
-	RplRehashing:       "RPL_REHASHING",
-	RplYoureService:    "RPL_YOURESERVICE",
-	RplTime:            "RPL_TIME",
-	RplUsersStart:      "RPL_USERSSTART",
-	RplUsers:           "RPL_USERS",
-	RplEndOfUsers:      "RPL_ENDOFUSERS",
-	RplNoUsers:         "RPL_NOUSERS",
-
-	ErrNoSuchNick:       "ERR_NOSUCHNICK",
-	ErrNoSuchServer:     "ERR_NOSUCHSERVER",
-	ErrNoSuchChannel:    "ERR_NOSUCHCHANNEL",
-	ErrCannotSendToChan: "ERR_CANNOTSENDTOCHAN",
-	ErrTooManyChannels:  "ERR_TOOMANYCHANNELS",
-	ErrWasNoSuchNick:    "ERR_WASNOSUCHNICK",
-	ErrTooManyTargets:   "ERR_TOOMANYTARGETS",
-	ErrNoSuchService:    "ERR_NOSUCHSERVICE",
-	ErrNoOrigin:         "ERR_NOORIGIN",
-	ErrNoRecipient:      "ERR_NORECIPIENT",
-	ErrNoTextToSend:     "ERR_NOTEXTTOSEND",
-	ErrNoTopLevel:       "ERR_NOTOPLEVEL",
-	ErrWildTopLevel:     "ERR_WILDTOPLEVEL",
-	ErrBadMask:          "ERR_BADMASK",
-	ErrUnknownCommand:   "ERR_UNKNOWNCOMMAND",
-	ErrNoMotd:           "ERR_NOMOTD",
-	ErrNoAdminInfo:      "ERR_NOADMININFO",
-	ErrFileError:        "ERR_FILEERROR",
-	ErrNoNicknameGiven:  "ERR_NONICKNAMEGIVEN",
-	ErrErroneusNickname: "ERR_ERRONEUSNICKNAME",
-	ErrNicknameInUse:    "ERR_NICKNAMEINUSE",
-	ErrNickCollision:    "ERR_NICKCOLLISION",
-	ErrUnavailResource:  "ERR_UNAVAILRESOURCE",
-
-	ErrUserNotInChannel:  "ERR_USERNOTINCHANNEL",
-	ErrNotOnChannel:      "ERR_NOTONCHANNEL",
-	ErrUserOnChannel:     "ERR_USERONCHANNEL",
-	ErrNoLogin:           "ERR_NOLOGIN",
-	ErrSummonDisabled:    "ERR_SUMMONDISABLED",
-	ErrUsersDisabled:     "ERR_USERSDISABLED",
-	ErrNotRegistered:     "ERR_NOTREGISTERED",
-	ErrNeedMoreParams:    "ERR_NEEDMOREPARAMS",
-	ErrAlreadyRegistered: "ERR_ALREADYREGISTERED",
-	ErrNoPermForHost:     "ERR_NOPERMFORHOST",
-	ErrPasswdMismatch:    "ERR_PASSWDMISMATCH",
-	ErrYoureBannedCreep:  "ERR_YOUREBANNEDCREEP",
-	ErrYouWillBeBanned:   "ERR_YOUWILLBEBANNED",
-	ErrKeySet:            "ERR_KEYSET",
-	ErrChannelIsFull:     "ERR_CHANNELISFULL",
-	ErrUnknownMode:       "ERR_UNKNOWNMODE",
-	ErrInviteOnlyChan:    "ERR_INVITEONLYCHAN",
-	ErrBannedFromChan:    "ERR_BANNEDFROMCHAN",
-	ErrBadChannelKey:     "ERR_BADCHANNELKEY",
-	ErrBadChanMask:       "ERR_BADCHANMASK",
-	ErrNoChanModes:       "ERR_NOCHANMODES",
-	ErrBanListFull:       "ERR_BANLISTFULL",
-	ErrNoPrivileges:      "ERR_NOPRIVILEGES",
-	ErrChanOpPrivsNeeded: "ERR_CHANOPRIVSNEEDED",
-	ErrCantKillServer:    "ERR_CANTKILLSERVER",
-	ErrRestricted:        "ERR_RESTRICTED",
-	ErrUniqOpPrivsNeeded: "ERR_UNIQOPPRIVSNEEDED",
-	ErrNoOperHost:        "ERR_NOOPERHOST",
-
-	ErrUmodeUnknownFlag: "ERR_UMODEUNKNOWNFLAG",
-	ErrUsersDoNotMatch:  "ERR_USERSDONTMATCH",
-}
-
-// Name returns the standard IRC name for a numeric code
-// (e.g., Name(2) returns "RPL_YOURHOST"). Returns an
-// empty string if the code is unknown.
-//
-// Deprecated: Use IRCMessageType.Name() instead.
-func Name(code IRCMessageType) string {
-	return names[code]
-}
--- a/pkg/irc/numerics_test.go
+++ b/pkg/irc/numerics_test.go
@@ -1,163 +0,0 @@
-package irc_test
-
-import (
-	"errors"
-	"testing"
-
-	"git.eeqj.de/sneak/neoirc/pkg/irc"
-)
-
-func TestName(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		numeric irc.IRCMessageType
-		want    string
-	}{
-		{irc.RplWelcome, "RPL_WELCOME"},
-		{irc.RplBounce, "RPL_BOUNCE"},
-		{irc.RplLuserOp, "RPL_LUSEROP"},
-		{irc.ErrCannotSendToChan, "ERR_CANNOTSENDTOCHAN"},
-		{irc.ErrNicknameInUse, "ERR_NICKNAMEINUSE"},
-	}
-
-	for _, tc := range tests {
-		if got := tc.numeric.Name(); got != tc.want {
-			t.Errorf("IRCMessageType(%d).Name() = %q, want %q", tc.numeric.Int(), got, tc.want)
-		}
-	}
-}
-
-func TestString(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		numeric irc.IRCMessageType
-		want    string
-	}{
-		{irc.RplWelcome, "RPL_WELCOME <001>"},
-		{irc.RplBounce, "RPL_BOUNCE <005>"},
-		{irc.RplLuserOp, "RPL_LUSEROP <252>"},
-		{irc.ErrCannotSendToChan, "ERR_CANNOTSENDTOCHAN <404>"},
-	}
-
-	for _, tc := range tests {
-		if got := tc.numeric.String(); got != tc.want {
-			t.Errorf("IRCMessageType(%d).String() = %q, want %q", tc.numeric.Int(), got, tc.want)
-		}
-	}
-}
-
-func TestCode(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		numeric irc.IRCMessageType
-		want    string
-	}{
-		{irc.RplWelcome, "001"},
-		{irc.RplBounce, "005"},
-		{irc.RplLuserOp, "252"},
-		{irc.ErrCannotSendToChan, "404"},
-	}
-
-	for _, tc := range tests {
-		if got := tc.numeric.Code(); got != tc.want {
-			t.Errorf("IRCMessageType(%d).Code() = %q, want %q", tc.numeric.Int(), got, tc.want)
-		}
-	}
-}
-
-func TestInt(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		numeric irc.IRCMessageType
-		want    int
-	}{
-		{irc.RplWelcome, 1},
-		{irc.RplBounce, 5},
-		{irc.RplLuserOp, 252},
-		{irc.ErrCannotSendToChan, 404},
-	}
-
-	for _, tc := range tests {
-		if got := tc.numeric.Int(); got != tc.want {
-			t.Errorf("IRCMessageType(%d).Int() = %d, want %d", tc.want, got, tc.want)
-		}
-	}
-}
-
-func TestFromInt_Known(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		code int
-		want irc.IRCMessageType
-	}{
-		{1, irc.RplWelcome},
-		{5, irc.RplBounce},
-		{252, irc.RplLuserOp},
-		{404, irc.ErrCannotSendToChan},
-		{433, irc.ErrNicknameInUse},
-	}
-
-	for _, test := range tests {
-		got, err := irc.FromInt(test.code)
-		if err != nil {
-			t.Errorf("FromInt(%d) returned unexpected error: %v", test.code, err)
-
-			continue
-		}
-
-		if got != test.want {
-			t.Errorf("FromInt(%d) = %v, want %v", test.code, got, test.want)
-		}
-	}
-}
-
-func TestFromInt_Unknown(t *testing.T) {
-	t.Parallel()
-
-	unknowns := []int{0, 999, 600, -1}
-	for _, code := range unknowns {
-		_, err := irc.FromInt(code)
-		if err == nil {
-			t.Errorf("FromInt(%d) expected error, got nil", code)
-
-			continue
-		}
-
-		if !errors.Is(err, irc.ErrUnknownNumeric) {
-			t.Errorf("FromInt(%d) error = %v, want ErrUnknownNumeric", code, err)
-		}
-	}
-}
-
-func TestUnknownNumeric_Name(t *testing.T) {
-	t.Parallel()
-
-	unknown := irc.IRCMessageType(999)
-	if got := unknown.Name(); got != "" {
-		t.Errorf("IRCMessageType(999).Name() = %q, want empty string", got)
-	}
-}
-
-func TestUnknownNumeric_String(t *testing.T) {
-	t.Parallel()
-
-	unknown := irc.IRCMessageType(999)
-	want := "UNKNOWN <999>"
-
-	if got := unknown.String(); got != want {
-		t.Errorf("IRCMessageType(999).String() = %q, want %q", got, want)
-	}
-}
-
-func TestDeprecatedNameFunc(t *testing.T) {
-	t.Parallel()
-
-	if got := irc.Name(irc.RplYourHost); got != "RPL_YOURHOST" {
-		t.Errorf("Name(RplYourHost) = %q, want %q", got, "RPL_YOURHOST")
-	}
-}
--- a/web/src/app.jsx
+++ b/web/src/app.jsx
@@ -135,22 +135,20 @@ function LoginScreen({ onLogin }) {
    e.preventDefault();
    setError("");
    try {
-      let hashcashStamp = "";
+      const extraHeaders = {};
      if (hashcashBitsRef.current > 0) {
        setError("Computing proof-of-work...");
-        hashcashStamp = await mintHashcash(
+        const stamp = await mintHashcash(
          hashcashBitsRef.current,
          hashcashResourceRef.current,
        );
+        extraHeaders["X-Hashcash"] = stamp;
        setError("");
      }
-      const reqBody = { nick: nick.trim() };
-      if (hashcashStamp) {
-        reqBody.pow_token = hashcashStamp;
-      }
      const res = await api("/session", {
        method: "POST",
-        body: JSON.stringify(reqBody),
+        body: JSON.stringify({ nick: nick.trim() }),
+        headers: extraHeaders,
      });
      localStorage.setItem("neoirc_token", res.token);
      onLogin(res.nick);