fix(omp): make effect driving durable and deterministic

package.json

@@ -51,6 +51,7 @@
     "guard:packages": "node ./scripts/guard-package-integrity.cjs",
     "check:library-syntax": "node ./scripts/validate-library-js-syntax.cjs",
     "verify:metadata": "node ./scripts/check-package-metadata.cjs",
+    "verify:omp-extension-types": "tsc -p plugins/babysitter-unified/per-harness/omp/tsconfig.json",
     "validate:processes": "node ./scripts/validate-process.mjs",
     "verify:library-metadata": "node packages/atlas/scripts/verify-library-metadata.mjs",
     "test:atlas-catalog-contracts": "npm exec --yes --package=vitest -- vitest run --config vitest.config.ts \"packages/atlas/src/catalog/catalog.test.ts\" \"packages/atlas/src/catalog/discovery.contract.test.ts\" \"packages/atlas/src/catalog/sdk.contract.test.ts\" \"packages/atlas/src/catalog/discovery.packaged.test.ts\" \"packages/atlas/src/catalog/export.contract.test.ts\" \"packages/atlas/src/catalog/consumer-imports.contract.test.ts\" \"packages/atlas/src/catalog/workspace-metadata.contract.test.ts\" \"packages/atlas/src/catalog/final-removal.contract.test.ts\" \"packages/babysitter-sdk/src/harness/adapterFallbackMetadata.contract.test.ts\" \"packages/adapters/hooks/core/src/discovery/__tests__/detector.contract.test.ts\" \"packages/adapters/core/tests/host-detection.contract.test.ts\" \"packages/adapters/core/tests/invocation.contract.test.ts\" \"packages/adapters/extensions/src/__tests__/targets.contract.test.ts\"",
@@ -133,6 +134,7 @@
     "@docusaurus/core": "3.10.1",
     "@docusaurus/preset-classic": "3.10.1",
     "@mdx-js/react": "^3.0.0",
+    "@oh-my-pi/pi-coding-agent": "16.5.2",
     "@vitejs/plugin-react": "^6.0.1",
     "@vitest/coverage-v8": "4.1.6",
     "markdownlint-cli2": "0.22.1",

packages/adapters/extensions/src/targets/adapters/oh-my-pi.ts

@@ -87,8 +87,9 @@ export function generateOhMyPiManifest(manifest: ResolvedManifest, targetName =
       skills: ['./skills'],
     },
     peerDependencies: {
-      '@oh-my-pi/pi-coding-agent': '*',
+      '@oh-my-pi/pi-coding-agent': '>=16.5.2 <17',
     },
+    ...(manifest.name === 'babysitter' ? { dependencies: { zod: '^4.4.3' } } : {}),
     scripts: {
       test: 'node --test test/integration.test.js && node test/packaged-install.test.cjs',
       'validate:ci': 'npm test',
@@ -103,6 +104,7 @@ export function generateOhMyPiManifest(manifest: ResolvedManifest, targetName =
       'README.md',
       'AGENTS.md',
       'extensions/',
+      ...(manifest.name === 'babysitter' ? ['agents/'] : []),
       'skills/',
       'commands/',
       'scripts/',

plugins/babysitter-unified/per-harness/omp/agents/babysitter-task.md

@@ -0,0 +1,18 @@
+---
+name: babysitter-task
+description: Execute one Babysitter agent effect under deterministic single-writer orchestration
+blocking: true
+---
+
+Execute exactly the one assignment supplied by the Babysitter OMP deterministic
+driver. The first line is the human-readable native Task preview; the
+`BABYSITTER_OMP_BRIDGE` line is the durable ownership descriptor.
+
+The parent extension is the sole writer for execution checkpoints, result
+persistence, `task:post`, and `run:iterate`. Never invoke those commands or
+dispatch another task yourself.
+
+Before yielding, call `babysitter_agent_complete` exactly once with the supplied
+bridge fields and your final effect value, then yield that identical value
+through the provided structured output contract. Never return cancellation,
+placeholder, or schema-invalid payloads as successful results.

plugins/babysitter-unified/per-harness/omp/driver.d.ts

@@ -0,0 +1 @@
+export * from "./extensions-driver.js";