feat: add discord guild wildcard defaults

docs/configuration.md

@@ -208,6 +208,7 @@ Configure the Discord bot by setting the bot token and optional gating:
       groupChannels: ["clawd-dm"]          // optional group DM allowlist
     },
     guilds: {
+      "*": { requireMention: true },       // default per-guild mention gating
       "123456789012345678": {               // guild id (preferred) or slug
         slug: "friends-of-clawd",
         requireMention: false,              // per-guild default
@@ -225,6 +226,7 @@ Configure the Discord bot by setting the bot token and optional gating:
 
 Clawdis starts Discord only when a `discord` config section exists. The token is resolved from `DISCORD_BOT_TOKEN` or `discord.token` (unless `discord.enabled` is `false`). Use `user:<id>` (DM) or `channel:<id>` (guild channel) when specifying delivery targets for cron/CLI commands.
 Guild slugs are lowercase with spaces replaced by `-`; channel keys use the slugged channel name (no leading `#`). Prefer guild ids as keys to avoid rename ambiguity.
+Use `discord.guilds."*"` for default per-guild settings.
 
 ### `imessage` (imsg CLI)
 

docs/discord.md

@@ -63,6 +63,7 @@ Note: Guild context `[from:]` lines include `author.tag` + `id` to make ping-rea
       groupChannels: ["clawd-dm"]
     },
     guilds: {
+      "*": { requireMention: true },
       "123456789012345678": {
         slug: "friends-of-clawd",
         requireMention: false,
@@ -82,6 +83,7 @@ Note: Guild context `[from:]` lines include `author.tag` + `id` to make ping-rea
 - `dm.groupEnabled`: enable group DMs (default `false`).
 - `dm.groupChannels`: optional allowlist for group DM channel ids or slugs.
 - `guilds`: per-guild rules keyed by guild id (preferred) or slug.
+- `guilds."*"`: default per-guild settings applied when no explicit entry exists.
 - `guilds.<id>.slug`: optional friendly slug used for display names.
 - `guilds.<id>.users`: optional per-guild user allowlist (ids or names).
 - `guilds.<id>.channels`: channel rules (keys are channel slugs or ids).

docs/groups.md

@@ -51,6 +51,7 @@ Group messages require a mention unless overridden per group. Defaults live per
 Notes:
 - `mentionPatterns` are case-insensitive regexes.
 - Surfaces that provide explicit mentions still pass; patterns are a fallback.
+- Discord defaults live in `discord.guilds."*"` (overridable per guild/channel).
 
 ## Activation (owner-only)
 Group owners can toggle per-group activation: