test(e2e): add /goal and /best-practices to wire handshake snapshot

The wire-protocol initialize handshake pins the full slash-command
list; the two commands added in this branch were missing from the
expected payload, failing the CI test matrix. Snapshot refixed via
--inline-snapshot=fix and diff-reviewed; full tests_e2e suite green
locally (65 passed, 4 skipped).

Author: elkaix

tests_e2e/test_wire_protocol.py

@@ -75,6 +75,16 @@ def test_initialize_handshake(tmp_path) -> None:
                             "description": "Toggle plan mode. Usage: /plan [on|off|view|clear]",
                             "aliases": [],
                         },
+                        {
+                            "name": "goal",
+                            "description": "Set a thread goal pursued across turns until verified. Usage: /goal <objective> | view | pause | resume | clear",
+                            "aliases": [],
+                        },
+                        {
+                            "name": "best-practices",
+                            "description": "Inject engineering best practices (code changes, testing, todos, debugging) into context",
+                            "aliases": ["bp"],
+                        },
                         {
                             "name": "add-dir",
                             "description": "Add a directory to the workspace. Usage: /add-dir <path>. Run without args to list added dirs",
@@ -260,6 +270,16 @@ def test_initialize_external_tool_conflict(tmp_path) -> None:
                             "description": "Toggle plan mode. Usage: /plan [on|off|view|clear]",
                             "aliases": [],
                         },
+                        {
+                            "name": "goal",
+                            "description": "Set a thread goal pursued across turns until verified. Usage: /goal <objective> | view | pause | resume | clear",
+                            "aliases": [],
+                        },
+                        {
+                            "name": "best-practices",
+                            "description": "Inject engineering best practices (code changes, testing, todos, debugging) into context",
+                            "aliases": ["bp"],
+                        },
                         {
                             "name": "add-dir",
                             "description": "Add a directory to the workspace. Usage: /add-dir <path>. Run without args to list added dirs",