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/skills/task-coordination-strategies/references/task-decomposition.md

@@ -0,0 +1,98 @@
+# Task Decomposition Examples
+
+Practical examples of decomposing features into parallelizable tasks with clear ownership.
+
+## Example 1: User Authentication Feature
+
+### Feature Description
+
+Add email/password authentication with login, registration, and profile pages.
+
+### Decomposition (Vertical Slices)
+
+**Stream 1: Login Flow** (implementer-1)
+
+- Owned files: `src/pages/login.tsx`, `src/api/login.ts`, `tests/login.test.ts`
+- Requirements: Login form, API endpoint, input validation, error handling
+- Interface: Imports `AuthResponse` from `src/types/auth.ts`
+
+**Stream 2: Registration Flow** (implementer-2)
+
+- Owned files: `src/pages/register.tsx`, `src/api/register.ts`, `tests/register.test.ts`
+- Requirements: Registration form, API endpoint, email validation, password strength
+- Interface: Imports `AuthResponse` from `src/types/auth.ts`
+
+**Stream 3: Shared Infrastructure** (implementer-3)
+
+- Owned files: `src/types/auth.ts`, `src/middleware/auth.ts`, `src/utils/jwt.ts`
+- Requirements: Type definitions, JWT middleware, token utilities
+- Dependencies: None (other streams depend on this)
+
+### Dependency Graph
+
+```
+Stream 3 (types/middleware) ──→ Stream 1 (login)
+                             └→ Stream 2 (registration)
+```
+
+## Example 2: REST API Endpoints
+
+### Feature Description
+
+Add CRUD endpoints for a new "Projects" resource.
+
+### Decomposition (By Layer)
+
+**Stream 1: Data Layer** (implementer-1)
+
+- Owned files: `src/models/project.ts`, `src/migrations/add-projects.ts`, `src/repositories/project-repo.ts`
+- Requirements: Schema definition, migration, repository pattern
+- Dependencies: None
+
+**Stream 2: Business Logic** (implementer-2)
+
+- Owned files: `src/services/project-service.ts`, `src/validators/project-validator.ts`
+- Requirements: CRUD operations, validation rules, business logic
+- Dependencies: Blocked by Stream 1 (needs model/repository)
+
+**Stream 3: API Layer** (implementer-3)
+
+- Owned files: `src/routes/projects.ts`, `src/controllers/project-controller.ts`
+- Requirements: REST endpoints, request parsing, response formatting
+- Dependencies: Blocked by Stream 2 (needs service layer)
+
+## Task Template
+
+```markdown
+## Task: {Stream Name}
+
+### Objective
+
+{1-2 sentence description of what to build}
+
+### Owned Files
+
+- {file1} — {purpose}
+- {file2} — {purpose}
+
+### Requirements
+
+1. {Specific deliverable 1}
+2. {Specific deliverable 2}
+3. {Specific deliverable 3}
+
+### Interface Contract
+
+- Exports: {types/functions this stream provides}
+- Imports: {types/functions this stream consumes from other streams}
+
+### Acceptance Criteria
+
+- [ ] {Verifiable criterion 1}
+- [ ] {Verifiable criterion 2}
+- [ ] {Verifiable criterion 3}
+
+### Out of Scope
+
+- {Explicitly excluded work}
+```