Remove experimental/aitools (#4217)

Removes the experimental/aitools directory and all references to it
throughout the codebase.

Changes:
- Delete experimental/aitools/ directory (35 files)
- Remove aitools from TEST_PACKAGES and test-exp-aitools target from
Makefile
- Remove test-exp-aitools CI job from GitHub workflow
- Remove aitools command registration from cmd/experimental
- Update CODEOWNERS, testmask targets and tests

All tests pass and the code builds successfully.

Author: fjakobs

.github/CODEOWNERS

@@ -7,5 +7,4 @@
 /cmd/workspace/apps/      @databricks/eng-app-devex
 /libs/apps/               @databricks/eng-app-devex
 /acceptance/apps/         @databricks/eng-app-devex
-/experimental/aitools/    @databricks/eng-app-devex @lennartkats-db
 /experimental/apps-mcp/   @databricks/eng-app-devex @lennartkats-db

.github/workflows/push.yml

@@ -145,37 +145,6 @@ jobs:
       - name: Analyze slow tests
         run: make slowest
 
-  test-exp-aitools:
-    needs:
-      - cleanups
-      - testmask
-
-    # Only run if the target is in the list of targets from testmask
-    if: ${{ contains(fromJSON(needs.testmask.outputs.targets), 'test-exp-aitools') }}
-    name: "make test-exp-aitools"
-    runs-on: ${{ matrix.os }}
-
-    strategy:
-      fail-fast: false
-      matrix:
-        os:
-          - macos-latest
-          - ubuntu-latest
-          - windows-latest
-
-    steps:
-      - name: Checkout repository and submodules
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-
-      - name: Setup build environment
-        uses: ./.github/actions/setup-build-environment
-        with:
-          cache-key: test-exp-aitools
-
-      - name: Run tests
-        run: |
-          make test-exp-aitools
-
   test-exp-apps-mcp:
     needs:
       - cleanups
@@ -282,7 +251,6 @@ jobs:
   test-result:
     needs:
       - test
-      - test-exp-aitools
       - test-exp-apps-mcp
       - test-exp-ssh
       - test-pipelines

Makefile

@@ -1,7 +1,7 @@
 default: checks fmt lint
 
 # Default packages to test (all)
-TEST_PACKAGES = ./acceptance/internal ./libs/... ./internal/... ./cmd/... ./bundle/... ./experimental/aitools/... ./experimental/ssh/... .
+TEST_PACKAGES = ./acceptance/internal ./libs/... ./internal/... ./cmd/... ./bundle/... ./experimental/ssh/... .
 
 # Default acceptance test filter (all)
 ACCEPTANCE_TEST_FILTER = ""
@@ -173,9 +173,6 @@ generate:
 
 .PHONY: lint lintfull tidy lintcheck fmt fmtfull test test-unit test-acc test-slow test-slow-unit test-slow-acc cover showcover build snapshot snapshot-release schema integration integration-short acc-cover acc-showcover docs ws wsfix links checks test-update test-update-templates generate-out-test-toml test-update-aws test-update-all generate-validation
 
-test-exp-aitools:
-	make test TEST_PACKAGES="./experimental/aitools/..." ACCEPTANCE_TEST_FILTER="TestAccept/idontexistyet/aitools"
-
 test-exp-apps-mcp:
 	make test TEST_PACKAGES="./experimental/apps-mcp/..." ACCEPTANCE_TEST_FILTER="TestAccept/idontexistyet/apps-mcp"
 

cmd/experimental/experimental.go

@@ -1,7 +1,6 @@
 package experimental
 
 import (
-	"github.com/databricks/cli/experimental/aitools"
 	mcp "github.com/databricks/cli/experimental/apps-mcp/cmd"
 	"github.com/spf13/cobra"
 )
@@ -21,7 +20,6 @@ These commands provide early access to new features that are still under
 development. They may change or be removed in future versions without notice.`,
 	}
 
-	cmd.AddCommand(aitools.New())
 	cmd.AddCommand(mcp.NewMcpCmd())
 
 	return cmd