feat(agent-teams): add plugin for multi-agent team orchestration

New plugin with 7 presets (review, debug, feature, fullstack, research,
security, migration), 4 specialized agents, 7 slash commands, 6 skills
with reference docs, and Context7 MCP integration for research teams.

plugins/agent-teams/commands/team-delegate.md

@@ -0,0 +1,94 @@
+---
+description: "Task delegation dashboard for managing team workload, assignments, and rebalancing"
+argument-hint: "[team-name] [--assign task-id=member-name] [--message member-name 'content'] [--rebalance]"
+---
+
+# Team Delegate
+
+Manage task assignments and team workload. Provides a delegation dashboard showing unassigned tasks, member workloads, blocked tasks, and rebalancing suggestions.
+
+## Pre-flight Checks
+
+1. Parse `$ARGUMENTS` for team name and action flags:
+   - `--assign task-id=member-name`: assign a specific task to a member
+   - `--message member-name 'content'`: send a message to a specific member
+   - `--rebalance`: analyze and rebalance workload distribution
+
+2. Read team config from `~/.claude/teams/{team-name}/config.json` using the Read tool
+3. Call `TaskList` to get current state
+
+## Action: Assign Task
+
+If `--assign` flag is provided:
+
+1. Parse task ID and member name from `task-id=member-name` format
+2. Use `TaskUpdate` to set the task owner
+3. Use `SendMessage` with `type: "message"` to notify the member:
+   - recipient: member name
+   - content: "You've been assigned task #{id}: {subject}. {task description}"
+4. Confirm: "Task #{id} assigned to {member-name}"
+
+## Action: Send Message
+
+If `--message` flag is provided:
+
+1. Parse member name and message content
+2. Use `SendMessage` with `type: "message"`:
+   - recipient: member name
+   - content: the message content
+3. Confirm: "Message sent to {member-name}"
+
+## Action: Rebalance
+
+If `--rebalance` flag is provided:
+
+1. Analyze current workload distribution:
+   - Count tasks per member (in_progress + pending assigned)
+   - Identify members with 0 tasks (idle)
+   - Identify members with 3+ tasks (overloaded)
+   - Check for blocked tasks that could be unblocked
+
+2. Generate rebalancing suggestions:
+
+   ```
+   ## Workload Analysis
+
+   Member          Tasks    Status
+   ─────────────────────────────────
+   implementer-1   3        overloaded
+   implementer-2   1        balanced
+   implementer-3   0        idle
+
+   Suggestions:
+   1. Move task #5 from implementer-1 to implementer-3
+   2. Assign unassigned task #7 to implementer-3
+   ```
+
+3. Ask user for confirmation before executing rebalancing
+4. Execute approved moves with `TaskUpdate` and `SendMessage`
+
+## Default: Delegation Dashboard
+
+If no action flag is provided, display the full delegation dashboard:
+
+```
+## Delegation Dashboard: {team-name}
+
+### Unassigned Tasks
+  #5  Review error handling patterns
+  #7  Add integration tests
+
+### Member Workloads
+  implementer-1   3 tasks (1 in_progress, 2 pending)
+  implementer-2   1 task  (1 in_progress)
+  implementer-3   0 tasks (idle)
+
+### Blocked Tasks
+  #6  Blocked by #4 (in_progress, owner: implementer-1)
+
+### Suggestions
+  - Assign #5 to implementer-3 (idle)
+  - Assign #7 to implementer-2 (low workload)
+```
+
+**Tip**: Use Shift+Tab to enter Claude Code's built-in delegate mode for ad-hoc task delegation.