feat(channels): add resolve command + defaults

docs/cli/channels.md

@@ -20,6 +20,7 @@ clawdbot channels list
 clawdbot channels status
 clawdbot channels capabilities
 clawdbot channels capabilities --channel discord --target channel:123
+clawdbot channels resolve --channel slack "#general" "@jane"
 clawdbot channels logs --channel all
 ```
 
@@ -57,3 +58,17 @@ Notes:
 - `--channel` is optional; omit it to list every channel (including extensions).
 - `--target` accepts `channel:<id>` or a raw numeric channel id and only applies to Discord.
 - Probes are provider-specific: Discord intents + optional channel permissions; Slack bot + user scopes; Telegram bot flags + webhook; Signal daemon version; MS Teams app token + Graph roles/scopes (annotated where known). Channels without probes report `Probe: unavailable`.
+
+## Resolve names to IDs
+
+Resolve channel/user names to IDs using the provider directory:
+
+```bash
+clawdbot channels resolve --channel slack "#general" "@jane"
+clawdbot channels resolve --channel discord "My Server/#support" "@someone"
+clawdbot channels resolve --channel matrix "Project Room"
+```
+
+Notes:
+- Use `--kind user|group|auto` to force the target type.
+- Resolution prefers active matches when multiple entries share the same name.