[Server] Use getDescription to get all descriptions. (#188)

* Remove `getSummary` method and update descriptions in snapshots and code

* Add changelog entry

---------

Co-authored-by: Christopher Hertel <mail@christopher-hertel.de>

tests/Inspector/Http/snapshots/HttpCombinedRegistrationTest-resources_list.json

@@ -3,7 +3,7 @@
     {
       "name": "priority_config_discovered",
       "uri": "config://priority",
-      "description": "A resource discovered via attributes."
+      "description": "A resource discovered via attributes.\n\nThis will be overridden by a manual registration with the same URI."
     }
   ]
 }

tests/Inspector/Http/snapshots/HttpComplexToolSchemaTest-tools_list.json

@@ -2,7 +2,7 @@
   "tools": [
     {
       "name": "schedule_event",
-      "description": "Schedules a new event.",
+      "description": "Schedules a new event.\n\nThe inputSchema for this tool will reflect all parameter types and defaults.",
       "inputSchema": {
         "type": "object",
         "properties": {

tests/Inspector/Http/snapshots/HttpDiscoveryUserProfileTest-tools_list.json

@@ -25,7 +25,7 @@
     },
     {
       "name": "send_welcome",
-      "description": "Sends a welcome message to a user.",
+      "description": "Sends a welcome message to a user.\n\n(This is a placeholder - in a real app, it might queue an email).",
       "inputSchema": {
         "type": "object",
         "properties": {

tests/Inspector/Http/snapshots/HttpSchemaShowcaseTest-tools_list.json

@@ -32,7 +32,7 @@
     },
     {
       "name": "calculate_range",
-      "description": "Performs mathematical operations with numeric constraints.",
+      "description": "Performs mathematical operations with numeric constraints.\n\nDemonstrates: METHOD-LEVEL Schema",
       "inputSchema": {
         "type": "object",
         "properties": {