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-status.md

@@ -0,0 +1,60 @@
+---
+description: "Display team members, task status, and progress for an active agent team"
+argument-hint: "[team-name] [--tasks] [--members] [--json]"
+---
+
+# Team Status
+
+Display the current state of an active agent team including members, tasks, and progress.
+
+## Phase 1: Team Discovery
+
+1. Parse `$ARGUMENTS` for team name and flags:
+   - If team name provided, use it directly
+   - If no team name, check `~/.claude/teams/` for active teams
+   - If multiple teams exist and no name specified, list all teams and ask user to choose
+   - `--tasks`: show only task details
+   - `--members`: show only member details
+   - `--json`: output raw JSON instead of formatted table
+
+2. Read team config from `~/.claude/teams/{team-name}/config.json` using the Read tool
+3. Call `TaskList` to get current task state
+
+## Phase 2: Status Display
+
+### Members Table
+
+Display each team member with their current state:
+
+```
+Team: {team-name}
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+Members:
+  Name              Role              Status
+  ─────────────────────────────────────────
+  security-rev      team-reviewer     working on task #2
+  perf-rev          team-reviewer     idle
+  arch-rev          team-reviewer     working on task #4
+```
+
+### Tasks Table
+
+Display tasks with status, assignee, and dependencies:
+
+```
+Tasks:
+  ID   Status        Owner           Subject
+  ─────────────────────────────────────────────────
+  #1   completed     security-rev    Review auth module
+  #2   in_progress   security-rev    Review API endpoints
+  #3   completed     perf-rev        Profile database queries
+  #4   in_progress   arch-rev        Analyze module structure
+  #5   pending       (unassigned)    Consolidate findings
+
+Progress: 40% (2/5 completed)
+```
+
+### JSON Output
+
+If `--json` flag is set, output the raw team config and task list as JSON.