feat: add Conductor plugin for Context-Driven Development

Add comprehensive Conductor plugin implementing Context-Driven Development
methodology with tracks, specs, and phased implementation plans.

Components:
- 5 commands: setup, new-track, implement, status, revert
- 1 agent: conductor-validator
- 3 skills: context-driven-development, track-management, workflow-patterns
- 18 templates for project artifacts

Documentation updates:
- README.md: Updated counts (68 plugins, 100 agents, 110 skills, 76 tools)
- docs/plugins.md: Added Conductor to Workflows section
- docs/agents.md: Added conductor-validator agent
- docs/agent-skills.md: Added Conductor skills section

Also includes Prettier formatting across all project files.

plugins/blockchain-web3/skills/nft-standards/SKILL.md

@@ -150,6 +150,7 @@ contract GameItems is ERC1155, Ownable {
 ## Metadata Standards
 
 ### Off-Chain Metadata (IPFS)
+
 ```json
 {
   "name": "NFT #1",
@@ -175,6 +176,7 @@ contract GameItems is ERC1155, Ownable {
 ```
 
 ### On-Chain Metadata
+
 ```solidity
 contract OnChainNFT is ERC721 {
     struct Traits {