Add system arch data to debug output

app/routers/debug.py

@@ -1,5 +1,8 @@
 import hashlib
 import logging
+import os
+import platform
+import struct
 import sys
 from datetime import datetime, timezone
 from typing import Any
@@ -34,6 +37,13 @@ LOG_COPY_BOUNDARY_PREFIX = [
 ]
 
 
+class DebugSystemInfo(BaseModel):
+    os: str
+    arch: str
+    arch_bits: int
+    total_ram_mb: int
+
+
 class DebugApplicationInfo(BaseModel):
     version: str
     version_source: str
@@ -95,6 +105,7 @@ class DebugDatabaseInfo(BaseModel):
 
 class DebugSnapshotResponse(BaseModel):
     captured_at: str
+    system: DebugSystemInfo
     application: DebugApplicationInfo
     health: HealthResponse
     runtime: DebugRuntimeInfo
@@ -103,6 +114,23 @@ class DebugSnapshotResponse(BaseModel):
     logs: list[str]
 
 
+def _build_system_info() -> DebugSystemInfo:
+    try:
+        # os.sysconf is available on Linux/macOS
+        page_size = os.sysconf("SC_PAGE_SIZE")
+        page_count = os.sysconf("SC_PHYS_PAGES")
+        total_ram_mb = (page_size * page_count) // (1024 * 1024)
+    except (AttributeError, ValueError, OSError):
+        total_ram_mb = 0
+
+    return DebugSystemInfo(
+        os=f"{platform.system()} {platform.release()}",
+        arch=platform.machine(),
+        arch_bits=struct.calcsize("P") * 8,
+        total_ram_mb=total_ram_mb,
+    )
+
+
 def _build_application_info() -> DebugApplicationInfo:
     build_info = get_app_build_info()
     dirty_output = git_output("status", "--porcelain")
@@ -272,6 +300,7 @@ async def debug_support_snapshot() -> DebugSnapshotResponse:
     )
     return DebugSnapshotResponse(
         captured_at=datetime.now(timezone.utc).isoformat(),
+        system=_build_system_info(),
         application=_build_application_info(),
         health=HealthResponse(**health_data),
         runtime=DebugRuntimeInfo(