fix: Gitea Traefik routing and connection pool optimization

- Remove middleware reference from Gitea Traefik labels (caused routing issues)
- Optimize Gitea connection pool settings (MAX_IDLE_CONNS=30, authentication_timeout=180s)
- Add explicit service reference in Traefik labels
- Fix intermittent 504 timeouts by improving PostgreSQL connection handling

Fixes Gitea unreachability via git.michaelschiemer.de

resources/js/schemas/livecomponent-error.schema.json

@@ -0,0 +1,59 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "LiveComponent Error Response",
+  "description": "Schema for standardized error responses from LiveComponent API",
+  "type": "object",
+  "required": ["success", "error"],
+  "properties": {
+    "success": {
+      "type": "boolean",
+      "const": false
+    },
+    "error": {
+      "type": "object",
+      "required": ["code", "message"],
+      "properties": {
+        "code": {
+          "type": "string",
+          "description": "Error code identifier",
+          "enum": [
+            "VALIDATION_ERROR",
+            "COMPONENT_NOT_FOUND",
+            "ACTION_NOT_FOUND",
+            "CSRF_TOKEN_INVALID",
+            "RATE_LIMIT_EXCEEDED",
+            "STATE_CONFLICT",
+            "UPLOAD_FAILED",
+            "PERMISSION_DENIED",
+            "INTERNAL_ERROR"
+          ]
+        },
+        "message": {
+          "type": "string",
+          "description": "Human-readable error message",
+          "minLength": 1
+        },
+        "details": {
+          "type": "object",
+          "description": "Additional error details",
+          "additionalProperties": true
+        },
+        "componentId": {
+          "type": "string",
+          "description": "Component ID where error occurred"
+        },
+        "action": {
+          "type": "string",
+          "description": "Action method name that caused the error"
+        },
+        "timestamp": {
+          "type": "number",
+          "description": "Unix timestamp of error occurrence"
+        }
+      },
+      "additionalProperties": false
+    }
+  },
+  "additionalProperties": false
+}
+