Bump AppKit to 0.23.0 and agent skills to 0.1.4 (#4968)

## Summary
- Bump default AppKit template version from 0.20.3 to 0.23.0:
https://github.com/databricks/appkit/releases/tag/v0.23.0
- Bump default agent skills repo ref from v0.1.3 to v0.1.4:
https://github.com/databricks/databricks-agent-skills/releases/tag/v0.1.4

Author: pkosiec

cmd/apps/init.go

@@ -37,7 +37,7 @@ const (
 	appkitTemplateDir    = "template"
 	appkitDefaultBranch  = "main"
 	appkitTemplateTagPfx = "template-v"
-	appkitDefaultVersion = "template-v0.20.3"
+	appkitDefaultVersion = "template-v0.23.0"
 	defaultProfile       = "DEFAULT"
 )
 

experimental/aitools/lib/installer/installer.go

@@ -27,7 +27,7 @@ const (
 	skillsRepoOwner      = "databricks"
 	skillsRepoName       = "databricks-agent-skills"
 	skillsRepoPath       = "skills"
-	defaultSkillsRepoRef = "v0.1.3"
+	defaultSkillsRepoRef = "v0.1.4"
 )
 
 // fetchFileFn is the function used to download individual skill files.

experimental/aitools/lib/installer/installer_test.go

@@ -209,7 +209,7 @@ func TestInstallSkillsForAgentsWritesState(t *testing.T) {
 	assert.Equal(t, "0.1.0", state.Skills["databricks-sql"])
 	assert.Equal(t, "0.1.0", state.Skills["databricks-jobs"])
 
-	assert.Contains(t, stderr.String(), "Installed 2 skills (v0.1.3).")
+	assert.Contains(t, stderr.String(), fmt.Sprintf("Installed 2 skills (%s).", defaultSkillsRepoRef))
 }
 
 func TestInstallSkillForSingleWritesState(t *testing.T) {
@@ -232,7 +232,7 @@ func TestInstallSkillForSingleWritesState(t *testing.T) {
 	assert.Len(t, state.Skills, 1)
 	assert.Equal(t, "0.1.0", state.Skills["databricks-sql"])
 
-	assert.Contains(t, stderr.String(), "Installed 1 skill (v0.1.3).")
+	assert.Contains(t, stderr.String(), fmt.Sprintf("Installed 1 skill (%s).", defaultSkillsRepoRef))
 }
 
 func TestInstallSkillsSpecificNotFound(t *testing.T) {
@@ -275,7 +275,7 @@ func TestExperimentalSkillsSkippedByDefault(t *testing.T) {
 	assert.Len(t, state.Skills, 2)
 	assert.NotContains(t, state.Skills, "databricks-experimental")
 
-	assert.Contains(t, stderr.String(), "Installed 2 skills (v0.1.3).")
+	assert.Contains(t, stderr.String(), fmt.Sprintf("Installed 2 skills (%s).", defaultSkillsRepoRef))
 }
 
 func TestExperimentalSkillsIncludedWithFlag(t *testing.T) {
@@ -305,7 +305,7 @@ func TestExperimentalSkillsIncludedWithFlag(t *testing.T) {
 	assert.Contains(t, state.Skills, "databricks-experimental")
 	assert.True(t, state.IncludeExperimental)
 
-	assert.Contains(t, stderr.String(), "Installed 3 skills (v0.1.3).")
+	assert.Contains(t, stderr.String(), fmt.Sprintf("Installed 3 skills (%s).", defaultSkillsRepoRef))
 }
 
 func TestMinCLIVersionSkipWithWarningForInstallAll(t *testing.T) {
@@ -339,7 +339,7 @@ func TestMinCLIVersionSkipWithWarningForInstallAll(t *testing.T) {
 	assert.Len(t, state.Skills, 2)
 	assert.NotContains(t, state.Skills, "databricks-future")
 
-	assert.Contains(t, stderr.String(), "Installed 2 skills (v0.1.3).")
+	assert.Contains(t, stderr.String(), fmt.Sprintf("Installed 2 skills (%s).", defaultSkillsRepoRef))
 	assert.Contains(t, logBuf.String(), "requires CLI version 0.300.0")
 }
 
@@ -680,7 +680,7 @@ func TestInstallProjectScopeFiltersIncompatibleAgents(t *testing.T) {
 	require.NoError(t, err)
 
 	assert.Contains(t, stderr.String(), "Skipped No Project Agent: does not support project-scoped skills.")
-	assert.Contains(t, stderr.String(), fmt.Sprintf("Installed 2 skills (v%s).", strings.TrimPrefix(defaultSkillsRepoRef, "v")))
+	assert.Contains(t, stderr.String(), fmt.Sprintf("Installed 2 skills (%s).", defaultSkillsRepoRef))
 }
 
 func TestInstallProjectScopeZeroCompatibleAgentsReturnsError(t *testing.T) {