fix: auto-follow @coseeker.com during onboarding instead of Bluesky (#70)

The onboarding auto-follow (BSKY_APP_ACCOUNT_DID) was still pointing at
the real Bluesky team account's DID for coseeker, k4m2a, and mdparivaar
brands, copy-pasted from the upstream config. Point them at
@coseeker.com's DID instead so new users follow the right account.

brands/bluesky/brand.ts is left unchanged since it's documented as an
exact clone of upstream Bluesky behavior.

Fixes #61

Author: achalagrawal

brands/coseeker/brand.ts

@@ -219,7 +219,7 @@ const brand: Brand = {
     appviewDid: 'did:web:api.bsky.app',
   },
 
-  appAccountDid: 'did:plc:z72i7hdynmk6r22z27h6tvur',
+  appAccountDid: 'did:plc:ieyfjh6ystyufa3a7pi3jw5q', // @coseeker.com
 
   defaultFeeds: [
     {

brands/k4m2a/brand.ts

@@ -272,7 +272,7 @@ const brand: Brand = {
     appviewDid: 'did:web:api.bsky.app',
   },
 
-  appAccountDid: 'did:plc:z72i7hdynmk6r22z27h6tvur',
+  appAccountDid: 'did:plc:ieyfjh6ystyufa3a7pi3jw5q', // @coseeker.com
 
   defaultFeeds: [
     {

brands/mdparivaar/brand.ts

@@ -101,7 +101,7 @@ const brand: Brand = {
     appviewDid: 'did:web:api.bsky.app',
   },
 
-  appAccountDid: 'did:plc:z72i7hdynmk6r22z27h6tvur',
+  appAccountDid: 'did:plc:ieyfjh6ystyufa3a7pi3jw5q', // @coseeker.com
 
   defaultFeeds: [
     {