clawbot 4b445e6383 feat: implement Tier 1 channel modes (+o/+v/+m/+t), KICK, NOTICE (#88) ...

## Summary

Implement the core IRC channel functionality that users will immediately notice is missing. This is the foundation for all other mode enforcement.

closes #85

## Changes

### 1. Channel Member Flags Schema
- Added `is_operator INTEGER NOT NULL DEFAULT 0` and `is_voiced INTEGER NOT NULL DEFAULT 0` columns to `channel_members` table
- Proper boolean columns per sneak's instruction (not text string modes)

### 2. MODE +o/+v/-o/-v (User Channel Modes)
- `MODE #channel +o nick` / `-o` / `+v` / `-v` with permission checks
- Only existing `+o` users can grant/revoke modes
- NAMES reply shows `@nick` for operators, `+nick` for voiced users
- ISUPPORT advertises `PREFIX=(ov)@+`

### 3. MODE +m (Moderated)
- Added `is_moderated INTEGER NOT NULL DEFAULT 0` to `channels` table
- When +m is active, only +o and +v users can send PRIVMSG/NOTICE
- Others receive `ERR_CANNOTSENDTOCHAN` (404)

### 4. MODE +t (Topic Lock)
- Added `is_topic_locked INTEGER NOT NULL DEFAULT 1` to `channels` table
- Default ON for new channels (standard IRC behavior)
- When +t is active, only +o users can change the topic
- Others receive `ERR_CHANOPRIVSNEEDED` (482)

### 5. KICK Command
- `KICK #channel nick [:reason]` — operator-only
- Broadcasts KICK to all channel members including kicked user
- Removes kicked user from channel
- Proper error handling (482, 441, 403)

### 6. NOTICE Differentiation
- NOTICE does NOT trigger RPL_AWAY auto-replies
- NOTICE skips hashcash validation on +H channels
- Follows RFC 2812 (no auto-replies)

### Additional Improvements
- Channel creator auto-gets +o on first JOIN
- ISUPPORT: `PREFIX=(ov)@+`, `CHANMODES=,,H,mnst`
- MODE query shows accurate mode string (+nt, +m, +H)
- Fixed pre-existing unparam lint issue in fanOutSilent

## Testing

22 new tests covering:
- Operator auto-grant on channel creation
- Second joiner does NOT get +o
- MODE +o/+v/-o/-v with permission checks
- Non-operator cannot grant modes (482)
- +m enforcement (blocks non-voiced, allows op and voiced)
- +t enforcement (blocks non-op topic change, allows op)
- +t disable allows anyone to change topic
- KICK by operator (success + removal verification)
- KICK by non-operator (482)
- KICK target not in channel (441)
- KICK broadcast to all members
- KICK default reason
- NOTICE no AWAY reply
- PRIVMSG DOES trigger AWAY reply
- NOTICE skips hashcash on +H
- +m blocks NOTICE too
- Non-op cannot set +m
- ISUPPORT PREFIX=(ov)@+
- MODE query shows +m

## CI

`docker build .` passes — lint (0 issues), fmt-check, and all tests green.

Co-authored-by: user <user@Mac.lan guest wan>
Reviewed-on: #88
Co-authored-by: clawbot <clawbot@noreply.example.org>
Co-committed-by: clawbot <clawbot@noreply.example.org>

2026-03-25 02:08:28 +01:00

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