This fixes module resolution for lib tests that import from
@runtimed/agent-core.

⚠️ Known Issues:
- RuntimeAgentOptions API differences between @runt/lib and @runtimed/agent-core
- 'adapter' property removed, 'store' property now required
- Multiple test failures due to breaking API changes

These will need to be resolved once agent-core API is stabilized.

Updated to use the new @runtimed/agent-core API where:
- Store is created externally using createStorePromise
- Store is passed via runtimeOptions instead of adapter
- Sync payload is properly constructed using createRuntimeSyncPayload

✅ Changes:
- PyodideRuntimeAgent now expects store in runtimeOptions
- mod.ts creates store before instantiating agent
- Proper error handling for notebook ID requirement
- Store type imports added

This enables better in-browser agent support as intended
by the new agent-core architecture.

MediaBundle and validateMediaBundle are not yet available in @runtimed/schema@0.2.0.
Keeping temporary local definitions until schema exports are updated.

This maintains compatibility while we transition to the new package structure.

Fixed all test files to work with the new @runtimed/agent-core API:

✅ lib/test/mod.test.ts:
- Updated to create stores via createStorePromise
- Made tests async to handle store creation

✅ lib/test/runtime-agent-adapter-injection.test.ts:
- Replaced adapter passing with store creation
- Updated all test cases to create stores explicitly
- Proper sync payload creation for each test scenario

✅ pyodide-runtime-agent/test/config-cli.test.ts:
- Updated makeBaseConfig to be async and create stores
- Fixed assertThrows tests to handle async config creation
- Added fallback values for testing validation edge cases

All tests now compile successfully and use the intended
store-passing architecture. Ready for 0.x.0 breaking change release!