Update docs and formatting; remove obsolete v2 schema doc

- Refresh AI guide docs (api, svelte-patterns, testing-patterns)
- Add API updates notes, drop the outdated portal_api_v2_schema.md
- Format package.json

docs/ai/api.md

@@ -89,8 +89,8 @@ POST:
 Payload:
 
 {
-	"license_key": "...",
-	"email_address": "..."
+"license_key": "...",
+"email_address": "..."
 }
 
 Requires API key.
@@ -153,7 +153,6 @@ Variables:
 - verifyUrl
 - loginUrl
 
-
 license-key-delivery
 
 Variables:
@@ -161,7 +160,6 @@ Variables:
 - firstName
 - license_key
 
-
 email-verification-email
 
 Variables: