feat: add plugin loading protocol and schemas for enhanced plugin management

- Introduced `plugin-loading.zod.ts` with comprehensive schemas for plugin loading strategies, preloading, code splitting, dynamic imports, initialization, dependency resolution, hot reload, caching, sandboxing, and performance monitoring.
- Created `plugin.zod.ts` defining plugin context, lifecycle hooks, and shared plugin types.
- Added `service-registry.zod.ts` for service metadata and registry configuration schemas.
- Implemented `identifiers.zod.ts` for system identifier validation, including strict snake case and event name schemas.

Author: hotlong

.agents/skills/objectstack-kernel

@@ -0,0 +1 @@
+../../skills/objectstack-kernel

.claude/skills/objectstack-kernel

@@ -0,0 +1 @@
+../../skills/objectstack-kernel

.github/copilot-instructions.md

@@ -226,6 +226,7 @@ The `skills/` directory contains domain-specific AI skill definitions. When work
 | Skill | Path | Use When |
 |:---|:---|:---|
 | **Quickstart** | `skills/objectstack-quickstart/SKILL.md` | Project creation, defineStack(), drivers, adapters, bootstrap |
+| **Kernel** | `skills/objectstack-kernel/SKILL.md` | Plugin lifecycle, DI, EventBus, Kernel config |
 | Data Design | `skills/objectstack-data/SKILL.md` | Designing Objects, Fields, Relations |
 | API Design | `skills/objectstack-api/SKILL.md` | Designing REST/GraphQL endpoints |
 | UI Design | `skills/objectstack-ui/SKILL.md` | Designing Views, Dashboards, Apps |

packages/spec/scripts/build-skill-references.ts

@@ -89,6 +89,16 @@ const SKILL_MAP: Record<string, string[]> = {
     'data/datasource.zod.ts',
     'data/dataset.zod.ts',
   ],
+  'objectstack-kernel': [
+    'kernel/plugin.zod.ts',
+    'kernel/context.zod.ts',
+    'kernel/service-registry.zod.ts',
+    'kernel/plugin-lifecycle-events.zod.ts',
+    'kernel/plugin-capability.zod.ts',
+    'kernel/plugin-loading.zod.ts',
+    'kernel/feature.zod.ts',
+    'kernel/metadata-plugin.zod.ts',
+  ],
 };
 
 // ── Import resolver ──────────────────────────────────────────────────────────