fix: reduce RAM requirements for Mac/Ubuntu installers to 8GB

- Mac installer: 16GB → 8GB
- Ubuntu installer: 16GB → 8GB
- DGX installer: 64GB → 32GB (matches container reservations)
- x86 docker-compose: reduced container memory limits to match ARM64

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docker-compose.x86.yml

@@ -35,17 +35,17 @@ services:
   tenant-postgres-primary:
     environment:
       # x86_64 Performance settings - optimized for typical server specs
-      POSTGRES_SHARED_BUFFERS: 2GB
+      POSTGRES_SHARED_BUFFERS: 1GB
-      POSTGRES_EFFECTIVE_CACHE_SIZE: 6GB
+      POSTGRES_EFFECTIVE_CACHE_SIZE: 3GB
       POSTGRES_MAINTENANCE_WORK_MEM: 512MB
       POSTGRES_MAX_CONNECTIONS: 300
       POSTGRES_WORK_MEM: 128MB
     deploy:
       resources:
         limits:
-          memory: 8G
-        reservations:
           memory: 4G
+        reservations:
+          memory: 2G
     labels:
       - "gt2.platform=x86_64"
 
@@ -69,8 +69,8 @@ services:
     deploy:
       resources:
         limits:
-          memory: 16G
+          memory: 4G
         reservations:
-          memory: 8G
+          memory: 3G
     labels:
       - "gt2.platform=x86_64"

installers/install-gt2-dgx.sh

@@ -15,7 +15,7 @@ NC='\033[0m' # No Color
 # Configuration
 INSTALLER_VERSION="1.0.0"
 INSTALL_DIR="/opt/gt2"
-MIN_RAM_GB=64
+MIN_RAM_GB=32
 MIN_DISK_GB=50
 GITHUB_REPO="https://github.com/GT-Edge-AI-Internal/gt-ai-os-community.git"
 RELEASE_URL="https://api.github.com/repos/GT-Edge-AI-Internal/gt-ai-os-community/releases/latest"
@@ -71,7 +71,7 @@ OPTIONS:
 REQUIREMENTS:
     - NVIDIA DGX OS or Ubuntu with NVIDIA drivers
     - ARM64 architecture (Grace)
-    - 64GB+ RAM
+    - 32GB+ RAM
     - 50GB+ free disk space
     - NVIDIA Container Runtime
     - sudo access

installers/install-gt2-mac.sh

@@ -16,7 +16,7 @@ NC='\033[0m' # No Color
 INSTALLER_VERSION="1.0.0"
 INSTALL_DIR="${HOME}/GT-2.0"
 MIN_MACOS_VERSION="12"
-MIN_RAM_GB=16
+MIN_RAM_GB=8
 MIN_DISK_GB=20
 GITHUB_REPO="https://github.com/GT-Edge-AI-Internal/gt-ai-os-community.git"
 RELEASE_URL="https://api.github.com/repos/GT-Edge-AI-Internal/gt-ai-os-community/releases/latest"

installers/install-gt2-ubuntu.sh

@@ -16,7 +16,7 @@ NC='\033[0m' # No Color
 INSTALLER_VERSION="1.0.0"
 INSTALL_DIR="/opt/gt2"
 MIN_UBUNTU_VERSION="22.04"
-MIN_RAM_GB=16
+MIN_RAM_GB=8
 MIN_DISK_GB=20
 GITHUB_REPO="https://github.com/GT-Edge-AI-Internal/gt-ai-os-community.git"
 RELEASE_URL="https://api.github.com/repos/GT-Edge-AI-Internal/gt-ai-os-community/releases/latest"
@@ -75,7 +75,7 @@ OPTIONS:
 REQUIREMENTS:
     - Ubuntu 22.04 or higher
     - x86_64 architecture
-    - 16GB+ RAM
+    - 8GB+ RAM
     - 20GB+ free disk space
     - sudo access