Add ServerAdapterModule capabilities from fork's adapter-utils 0.3.1

Bring the K8s adapter up to parity with the fork's ServerAdapterModule
contract by adding sessionManagement, listSkills/syncSkills, listModels
with Bedrock detection, and promptBundleKey support in the session codec.

- Declare sessionManagement with nativeContextManagement: "confirmed"
  so Paperclip skips threshold-based session compaction (Claude manages
  its own context)
- Add ephemeral skill management (listSkills/syncSkills) mirroring
  claude_local — reports skill state without runtime persistence since
  skills are injected via prompt bundle into ephemeral Job pods
- Add listModels() with Bedrock environment detection, returning
  region-qualified model IDs when CLAUDE_CODE_USE_BEDROCK or
  ANTHROPIC_BEDROCK_BASE_URL are set
- Extend session codec to round-trip promptBundleKey field
- Remove the `as ServerAdapterModule` cast — the return type now
  satisfies the full interface

Co-Authored-By: Paperclip <noreply@paperclip.ing>

src/server/index.ts

@@ -1,9 +1,22 @@
-import type { ServerAdapterModule } from "@paperclipai/adapter-utils";
+import type { ServerAdapterModule, AdapterSessionManagement } from "@paperclipai/adapter-utils";
 import { type, models, agentConfigurationDoc } from "../index.js";
 import { execute } from "./execute.js";
 import { testEnvironment } from "./test.js";
 import { sessionCodec } from "./session.js";
 import { getConfigSchema } from "./config-schema.js";
+import { listK8sSkills, syncK8sSkills } from "./skills.js";
+import { listK8sModels } from "./models.js";
+
+const sessionManagement: AdapterSessionManagement = {
+  supportsSessionResume: true,
+  nativeContextManagement: "confirmed",
+  defaultSessionCompaction: {
+    enabled: true,
+    maxSessionRuns: 0,
+    maxRawInputTokens: 0,
+    maxSessionAgeHours: 0,
+  },
+};
 
 export function createServerAdapter(): ServerAdapterModule {
   return {
@@ -11,11 +24,15 @@ export function createServerAdapter(): ServerAdapterModule {
     execute,
     testEnvironment,
     sessionCodec,
+    sessionManagement,
     models,
+    listModels: listK8sModels,
+    listSkills: listK8sSkills,
+    syncSkills: syncK8sSkills,
     supportsLocalAgentJwt: true,
     agentConfigurationDoc,
     getConfigSchema,
-  } as ServerAdapterModule;
+  };
 }
 
 export { execute, testEnvironment, sessionCodec };