clarify tested tool support and agents delivery

expand AGENTS.md template to be self-contained

Revert "add installed skills section to AGENTS.md template in PD standard"

add installed skills section to AGENTS.md template in PD standard

rename ai-dev-kit to ai-devkit throughout

add audience column to L0 index, update repo URLs to ai-devkit

add workflow file paths to skill tables for agent discovery

update all paths and references to AgoraIO-Community/ai-dev-kit

clarify superpowers vs ai-dev-kit responsibilities in readme

fix install commands and agent description accuracy

condense readme intro into single subtitle, fix overview wording

improve readme subtitle and overview clarity

improve all skill files with better error handling and edge cases

add usage examples to skills library section

clarify overview: session start injects full skill file, not just git rules