fix(brand): correct Zoo canonical identities (IAM=zoo, GitHub=zooai, Twitter=@zoo_labs)

Each surface has a different handle — don't normalize them:
- orgHandle (IAM owner):  zoolabs  → zoo        (IAM org slug is just "zoo")
- githubOrg:              zoolabs  → zooai      (github.com/zooai is canonical)
- social.twitter:         @ZoOLabs → @zoo_labs  (actual Twitter handle)
- social.github:          zoolabs  → zooai

Legal entity 'Zoo Labs Foundation' unchanged.

Author: hanzo-dev

pkg/brand/src/orgs.ts

@@ -126,15 +126,15 @@ export const zoo: BrandConfig = {
   id: 'zoo',
   name: 'Zoo',
   orgName: 'Zoo Labs Foundation',
-  orgHandle: 'zoolabs',
+  orgHandle: 'zoo',
   tagline: 'Open AI research network',
   description: 'Decentralized AI and decentralized science research through community-driven governance.',
 
   npmOrg: '@zoo',
 
   domain: 'zoo.ngo',
   iamDomain: 'zoo.id',
-  githubOrg: 'zoolabs',
+  githubOrg: 'zooai',
   docsUrl: 'https://docs.zoo.ngo',
 
   logo: {
@@ -159,8 +159,8 @@ export const zoo: BrandConfig = {
   },
 
   social: {
-    twitter: '@zoolabs',
-    github: 'https://github.com/zoolabs',
+    twitter: '@zoo_labs',
+    github: 'https://github.com/zooai',
   },
 
   seo: {