[Agents/Docs] Consolidate AI files; create authoritative ai/* sources #64
Description
Title: [Agents/Docs] Consolidate AI files; create authoritative ai/* sources
Labels: area:agents, v0.2.0, aiops
Acceptance Criteria:
ai/agents.md, ai/Gemini.md, ai/Claude.md authored; duplicates retired.
ai/RUNNERS.md documents JS/Bash runners + telemetry hooks.
Owner: Agents