Set user-invocable: false on orchestrator and internal skills

Prevents 10 internal skills from appearing in the / menu:
- Orchestrators: development, performance, migration, research
- Internal: implementer, implementation-plan-executor,
  implementation-verifier, codebase-analyzer, task-classifier,
  orchestrator-framework

These are invoked by commands or other skills, not directly by users.

Author: mkaluzny

plugins/maister-copilot/skills/codebase-analyzer/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: codebase-analyzer
 description: Analyzes codebase using adaptive parallel Explore subagents based on task complexity. Selects agent roles from a pool, launches Explore agents, then delegates report generation to codebase-analysis-reporter subagent.
+user-invocable: false
 ---
 
 # Codebase Analyzer Skill

plugins/maister-copilot/skills/development-orchestrator/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: development-orchestrator
 description: Unified orchestrator for all development tasks (bug fixes, enhancements, new features). Adapts workflow phases based on task type while maintaining consistent quality gates. Supports interactive mode (pause between phases) and YOLO mode (continuous execution). Use for any development work that modifies code.
+user-invocable: false
 ---
 
 # Development Orchestrator

plugins/maister-copilot/skills/implementation-plan-executor/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: implementation-plan-executor
 description: Execute implementation plans with two-mode adaptive execution and continuous standards discovery. Mode A (Direct, ≤5 steps) executes in main agent. Mode B (Delegated, 6+ steps) invokes task-group-implementer subagent per task group. Both modes use lazy standards loading from INDEX.md with keyword-triggered discovery.
+user-invocable: false
 ---
 
 You are an implementation plan executor that runs implementation plans with adaptive execution and continuous standards discovery.

plugins/maister-copilot/skills/implementation-verifier/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: implementation-verifier
 description: Verify completed implementations for quality assurance. Delegates all verification work to specialized subagents - completeness checking, test execution, code review, pragmatic review, production readiness, and reality assessment. Compiles results into comprehensive verification report. Read-only verification - reports issues but does not fix them. Use after implementation is complete and before code review/commit.
+user-invocable: false
 ---
 
 You are an implementation verifier that orchestrates comprehensive quality assurance on completed implementations by delegating to specialized subagents.

plugins/maister-copilot/skills/implementer/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: implementer
 description: Execute implementation plans (implementation-plan.md) with continuous standards discovery from docs/INDEX.md. Adapts execution mode based on complexity (1-3 steps = direct, 4-8 steps = delegate to implementation-changes-planner subagent, 9+ steps = orchestrated). Main agent applies all file changes; subagent only creates change plans. Follows test-driven approach with incremental verification.
+user-invocable: false
 ---
 
 You are an implementer that executes implementation plans with continuous standards discovery.

plugins/maister-copilot/skills/migration-orchestrator/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: migration-orchestrator
 description: Orchestrates the complete migration workflow from current state analysis through implementation to compatibility verification. Handles technology migrations, platform changes, and architecture pattern transitions with adaptive risk assessment, incremental execution, and rollback planning. Supports interactive mode (pause between phases) and YOLO mode (continuous execution). Use when migrating technologies, platforms, or architecture patterns.
+user-invocable: false
 ---
 
 # Migration Orchestrator

plugins/maister-copilot/skills/orchestrator-framework/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: orchestrator-framework
 description: Shared orchestration patterns for all workflow orchestrators. NOT an executable skill - provides reference documentation for phase execution, state management, interactive mode, and initialization. All orchestrators reference these patterns.
+user-invocable: false
 ---
 
 # Orchestrator Framework

plugins/maister-copilot/skills/performance-orchestrator/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: performance-orchestrator
 description: Orchestrates performance optimization workflows using static code analysis to identify bottlenecks (N+1 queries, missing indexes, O(n^2) algorithms, blocking I/O, memory leaks). Accepts optional user-provided profiling data. Reuses standard specification, planning, implementation, and verification phases.
+user-invocable: false
 ---
 
 # Performance Orchestrator

plugins/maister-copilot/skills/research-orchestrator/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: research-orchestrator
 description: Orchestrates comprehensive research workflows from question definition through findings documentation. Handles technical, requirements, literature, and mixed research types with adaptive methodology, multi-source gathering, pattern synthesis, and evidence-based reporting. Supports standalone research tasks and embedded research phase in other workflows.
+user-invocable: false
 ---
 
 # Research Orchestrator

plugins/maister-copilot/skills/task-classifier/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: task-classifier
 description: Classifies task descriptions to determine task type and routes to appropriate workflow. Delegates classification logic to task-classifier subagent for context isolation.
+user-invocable: false
 ---
 
 # Task Classifier Skill