feat(conversation): add conversation list command

README.md

@@ -124,6 +124,7 @@ tdc thread reply <ref>              # reply to a thread
 tdc thread rename <ref> "New title" # rename a thread
 tdc thread update <ref> "New body"  # edit a thread's body (first post)
 tdc conversation unread             # list unread conversations
+tdc conversation list               # list conversations (--kind, --participant, --name, --state)
 tdc conversation view <ref>         # view conversation messages
 tdc msg view <ref>                  # view a conversation message
 tdc search "keyword"                # search across workspace

skills/comms-cli/SKILL.md

@@ -90,14 +90,15 @@ tdc thread view <ref> --raw       # Show raw markdown
 tdc thread create <channel-ref> "Title" "content"    # Create a new thread
 tdc thread create <channel-ref> "Title" "content" --json       # Create and return as JSON
 tdc thread create <channel-ref> "Title" "content" --json --full # Include all thread fields
-tdc thread create <channel-ref> "Title" "content" --notify 123,456  # Notify specific users
+tdc thread create <channel-ref> "Title" "content" --notify 123,456  # Notify specific users and/or groups by ID
 tdc thread create <channel-ref> "Title" "content" --unarchive  # Land thread in author's Inbox (overrides default Comms auto-archive)
 tdc thread create <channel-ref> "Title" "content" --no-unarchive  # Force archive even when userSettings.unarchiveNewThreads=true
 tdc thread create <channel-ref> "Title" "content" --dry-run  # Preview without posting
 tdc thread create <channel-ref> "Title" --file ./a.png  # Attach a file (repeatable; content optional)
 tdc thread reply <ref> "content"  # Post a comment (notifies EVERYONE_IN_THREAD by default)
 tdc thread reply <ref> "content" --notify EVERYONE  # Notify all workspace members
-tdc thread reply <ref> "content" --notify 123,id:456   # Notify specific user IDs
+tdc thread reply <ref> "content" --notify 123,id:456   # Notify specific users by ID
+tdc thread reply <ref> "content" --notify 123,Cbzzm11ZeYZoJYD4a6rti   # Notify a user and a group (group IDs are base58, not numeric)
 tdc thread reply <ref> "content" --json  # Post and return comment as JSON
 tdc thread reply <ref> "content" --json --full  # Include all comment fields
 tdc thread reply <ref> "content" --close       # Reply and close the thread
@@ -128,7 +129,7 @@ tdc thread update <ref> "New body" --json  # Update and return { id, content } a
 tdc thread update <ref> "New body" --json --full  # Update and return full thread as JSON
 ```
 
-Default `--notify` for reply is EVERYONE_IN_THREAD, which may notify more people than intended. Before posting, confirm with the user whether specific people should be notified instead (via `--notify <user-ids>`). Options: EVERYONE, EVERYONE_IN_THREAD, or comma-separated ID refs.
+Default `--notify` for reply is EVERYONE_IN_THREAD, which may notify more people than intended. Before posting, confirm with the user whether specific people should be notified instead (via `--notify <ids>`). Options: EVERYONE, EVERYONE_IN_THREAD, or comma-separated user and/or group IDs.
 
 `--notify` automatically resolves IDs: group IDs are routed to the `groups` API field, user IDs to `recipients`. No special syntax needed.
 
@@ -153,6 +154,14 @@ tdc comment delete <comment-ref> --yes --json        # Delete and return status
 
 ```bash
 tdc conversation unread                    # List unread conversations
+tdc conversation list                      # List active conversations (DMs and groups)
+tdc conversation list --kind group         # Only group conversations (3+ people)
+tdc conversation list --kind direct        # Only 1:1 conversations (and your self-DM)
+tdc conversation list --participant "Jane" # Only conversations including these users (comma-separated)
+tdc conversation list --name "release"     # Filter by title substring (case-insensitive)
+tdc conversation list --state archived     # Archived conversations only (active|all|archived; default active)
+tdc conversation list --snippet            # Include the latest message snippet
+tdc conversation list --limit 20 --json    # Cap rows and output as JSON
 tdc conversation <conversation-ref>        # View conversation (shorthand for view)
 tdc conversation view <conversation-ref>   # View conversation messages
 tdc conversation with <user-ref>           # Find your 1:1 DM with a user
@@ -429,6 +438,7 @@ tdc thread view <thread-id>
 **Check DMs:**
 ```bash
 tdc conversation unread --json
+tdc conversation list --kind group --json     # find a group DM by participants/name
 tdc conversation view <conversation-id>
 tdc conversation with "Alice Example"
 tdc conversation reply <id> "Got it, thanks!"