user 75867ba778 feat: implement Tier 2 channel modes (+b/+i/+s/+k/+l) ...

Implement the second tier of IRC channel features:

1. Ban system (+b): Add/remove/list bans with wildcard matching.
   Bans prevent both joining and sending messages.
   Schema: channel_bans table with mask, set_by, created_at.

2. Invite-only (+i): Channel mode requiring invitation to join.
   INVITE command for operators. Invites stored in DB and
   cleared after successful JOIN.

3. Secret (+s): Hides channel from LIST for non-members and
   from WHOIS channel lists when querier is not in same channel.

4. Channel key (+k): Password-protected channels. Key required
   on JOIN, set/cleared by operators.

5. User limit (+l): Maximum member count enforcement. Rejects
   JOIN when channel is at capacity.

Updated ISUPPORT CHANMODES to b,k,Hl,imnst.
Updated RPL_MYINFO available modes to ikmnostl.
Comprehensive tests for all features at both DB and handler levels.
README updated with full documentation of all new modes.

closes #86

2026-03-25 12:17:43 -07:00

98 KiB

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