feat: runner v0.2 — external setup, skip support, +24 real-data cases

Add `external:<path>` setup type for read-only access to real config
dumps without copying. Tests gracefully skip (○) when path unavailable.

Add 12 meta-compile cases for previously uncovered types (AccountingRegister,
CalculationRegister, ChartOfAccounts, ChartOfCharacteristicTypes,
ChartOfCalculationTypes, BusinessProcess, Task, ExchangePlan,
DocumentJournal, EventSubscription, HTTPService, WebService).

Add 18 external cases for info/validate skills against real ACC 8.3.24
config dump (meta, form, skd, role, subsystem, cf).

Total: 283 tests, all passing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tests/skills/cases/subsystem-validate/real-acc-admin.json

@@ -0,0 +1,5 @@
+{
+  "name": "Валидация реальной подсистемы Администрирование (БП)",
+  "setup": "external:C:/WS/tasks/cfsrc/acc_8.3.24",
+  "params": { "subsystemPath": "Subsystems/Администрирование.xml" }
+}

tests/skills/cases/subsystem-validate/real-acc-bank.json

@@ -0,0 +1,5 @@
+{
+  "name": "Валидация реальной подсистемы БанкИКасса (БП)",
+  "setup": "external:C:/WS/tasks/cfsrc/acc_8.3.24",
+  "params": { "subsystemPath": "Subsystems/БанкИКасса.xml" }
+}