docs(integrations): group credential setup guides in the sidebar

Adds '---Service Accounts & API Keys---' and '---All Integrations---'
sections to the integrations sidebar (fumadocs separators, same pattern as
api-reference/academy). All 14 credential guides now sit together at the
top; no slugs or URLs change

Author: waleedlatif1

apps/docs/content/docs/en/integrations/meta.json

@@ -1,13 +1,28 @@
 {
   "pages": [
     "index",
+    "---Service Accounts & API Keys---",
+    "airtable-service-account",
+    "asana-service-account",
+    "atlassian-service-account",
+    "attio-service-account",
+    "calcom-service-account",
+    "google-service-account",
+    "hubspot-service-account",
+    "linear-service-account",
+    "monday-service-account",
+    "notion-service-account",
+    "shopify-service-account",
+    "trello-service-account",
+    "wealthbox-service-account",
+    "webflow-service-account",
+    "---All Integrations---",
     "a2a",
     "agentmail",
     "agentphone",
     "agiloft",
     "ahrefs",
     "airtable",
-    "airtable-service-account",
     "airweave",
     "algolia",
     "amplitude",
@@ -16,12 +31,9 @@
     "appconfig",
     "arxiv",
     "asana",
-    "asana-service-account",
     "ashby",
     "athena",
-    "atlassian-service-account",
     "attio",
-    "attio-service-account",
     "azure_devops",
     "box",
     "brandfetch",
@@ -30,7 +42,6 @@
     "browser_use",
     "buffer",
     "calcom",
-    "calcom-service-account",
     "calendly",
     "circleback",
     "clay",
@@ -81,7 +92,6 @@
     "gitlab",
     "gmail",
     "gong",
-    "google-service-account",
     "google_ads",
     "google_appsheet",
     "google_bigquery",
@@ -108,7 +118,6 @@
     "greptile",
     "hex",
     "hubspot",
-    "hubspot-service-account",
     "hubspot-setup",
     "huggingface",
     "hunter",
@@ -133,7 +142,6 @@
     "leadmagic",
     "lemlist",
     "linear",
-    "linear-service-account",
     "linkedin",
     "linkup",
     "linq",
@@ -152,14 +160,12 @@
     "millionverifier",
     "mistral_parse",
     "monday",
-    "monday-service-account",
     "mongodb",
     "mysql",
     "neo4j",
     "neverbounce",
     "new_relic",
     "notion",
-    "notion-service-account",
     "obsidian",
     "okta",
     "onedrive",
@@ -206,7 +212,6 @@
     "sftp",
     "sharepoint",
     "shopify",
-    "shopify-service-account",
     "similarweb",
     "sixtyfour",
     "slack",
@@ -228,7 +233,6 @@
     "thrive",
     "tinybird",
     "trello",
-    "trello-service-account",
     "trigger_dev",
     "twilio",
     "twilio_sms",
@@ -239,9 +243,7 @@
     "vanta",
     "vercel",
     "wealthbox",
-    "wealthbox-service-account",
     "webflow",
-    "webflow-service-account",
     "whatsapp",
     "wikipedia",
     "wiza",