cross-ecosystem-synergy-detection — Multi-Ecosystem Automatic Synergy Discovery

Automatically discovers cross-invocable pairs in environments with multiple installed plugins and cross-CLI tools, and derives a synergy ranking table.

Activation Triggers

1. Multi-ecosystem component environment specified: "multiple plugins/cross-CLI installed", "synergy with other components", "cross-ecosystem", "run together"
2. New component added/removed: "component install", "add/remove component"
3. Synergy check phrasing: "are they working in isolation?", "can they be integrated?", "environment check", "combination effect"
4. Registry change detected (optional): If a user-maintained LOCAL_SKILL_REGISTRY.md is present, Step 7 runs when a new project/skill is registered. The registry is not auto-created — absent file → Step 7 reports [NOT-CONFIGURED] and skips its body (see Step 7-1 outcome table).

Exception: Single-component environments (1 or fewer installed → no meaningful activation)

Natural Language Triggers (General user phrasing — activates without internal vocabulary)