feat(coding-agent/core): loaded Python modules from user and project directories with priority

- Added Python prelude extension module loading from user and project directories.
- Implemented automatic discovery of Python modules from `.omp/modules` and `.pi/modules` directories.
- Added prioritized module loading with project-level modules overriding user-level modules.
- Updated kernel initialization methods to load Python modules during startup.

packages/coding-agent/test/fixtures/python-modules/alpha.py

@@ -0,0 +1,2 @@
+def alpha():
+	return "alpha"

packages/coding-agent/test/fixtures/python-modules/beta.py

@@ -0,0 +1,2 @@
+def beta():
+	return "beta"

packages/coding-agent/test/fixtures/python-modules/delta.py

@@ -0,0 +1,2 @@
+def delta():
+	return "delta"

packages/coding-agent/test/fixtures/python-modules/gamma.py

@@ -0,0 +1,2 @@
+def gamma():
+	return "gamma"