fix: align Copilot hook contract

integrations/README.md

@@ -6,6 +6,8 @@ The provider-level contract represents the default stable runtime. `contract_var
 
 Grok Build adapters write native user hook files under `$GROK_HOME/hooks` or `~/.grok/hooks`. Project `.grok/hooks` files require `/hooks-trust` or `--trust`; Claude Code and Cursor hook files are read-only compatibility sources for Elydora.
 
+GitHub Copilot command `preToolUse` hooks deny on crashes and every non-zero exit. Command timeouts continue through the normal permission flow, so `timeout_failure_mode` records that explicit exception when it differs from `failure_mode`.
+
 `delivery_state` is computed from the `node`, `python`, and `go` adapter flags:
 
 | State | Meaning |

integrations/catalog.json

@@ -122,6 +122,7 @@
       "integration_mode": "command_hooks",
       "config_format": "json",
       "config_paths": [
+        "$COPILOT_HOME/hooks/*.json",
         "~/.copilot/hooks/*.json",
         ".github/hooks/*.json"
       ],
@@ -129,9 +130,15 @@
         "before_tool": "preToolUse",
         "after_tool": "postToolUse"
       },
+      "event_fields": {
+        "name": "toolName",
+        "input": "toolArgs",
+        "session": "sessionId"
+      },
       "blocking": {
-        "mechanism": "exit_code_2",
-        "failure_mode": "fail_open"
+        "mechanism": "any_nonzero_exit",
+        "failure_mode": "fail_closed",
+        "timeout_failure_mode": "fail_open"
       },
       "adapters": { "node": true, "python": true, "go": true },
       "delivery_state": "available",

integrations/catalog.schema.json

@@ -148,6 +148,12 @@
                   "fail_closed",
                   "fail_open"
                 ]
+              },
+              "timeout_failure_mode": {
+                "enum": [
+                  "fail_closed",
+                  "fail_open"
+                ]
               }
             }
           },
@@ -332,6 +338,12 @@
                 "fail_closed",
                 "fail_open"
               ]
+            },
+            "timeout_failure_mode": {
+              "enum": [
+                "fail_closed",
+                "fail_open"
+              ]
             }
           }
         },