Initial package implementation: operations registry, call protocol, and adapters

Extracted from alkhub_ts packages/core/operations/ and packages/core/mcp/.
- Runtime-agnostic (injected fs/env deps, no Deno globals)
- Direct @logtape/logtape import instead of logger wrapper
- PendingRequestMap with pubsub-wired call protocol
- Peer-dep isolation for MCP adapter (sub-path export)
- Schema const naming convention (XSchema + X type alias)
- 68 tests passing, build + lint + test all green

tsup.config.ts

@@ -0,0 +1,14 @@
+import { defineConfig } from 'tsup';
+
+export default defineConfig({
+  entry: [
+    'src/index.ts',
+    'src/from_mcp.ts',
+  ],
+  format: ['esm', 'cjs'],
+  dts: true,
+  sourcemap: true,
+  clean: true,
+  splitting: true,
+  target: 'es2022',
+});