Skip app config/git_source drift when the app has no deployment

The app deploy-only fields (config, git_source) are applied through an app
deployment, which only happens once the app compute is started (manageLifecycle).
Until then DoRead leaves them nil, so an app that set config or git_source
without lifecycle.started=true planned a perpetual update for a field that was
never deployed.

Extend OverrideChangeDesc to skip config and git_source while there is no active
deployment, keying off remote.ActiveDeployment. source_code_path was already
skipped; matching on the top-level field (Prefix(1)) now also catches nested
config diffs. Real out-of-band drift is still reported once a deployment exists.
Adds acceptance tests for the config and git_source cases.

Author: radakam

acceptance/bundle/resources/apps/config-no-deployment/app/app.py

@@ -0,0 +1,10 @@
+import os
+
+from flask import Flask
+
+app = Flask(__name__)
+
+
+@app.route("/")
+def home():
+    return "Hello from config-no-deployment app!"

acceptance/bundle/resources/apps/config-no-deployment/app/app.yaml

@@ -0,0 +1,3 @@
+command:
+  - python
+  - app.py

acceptance/bundle/resources/apps/config-no-deployment/databricks.yml

@@ -0,0 +1,14 @@
+bundle:
+  name: app-config-no-deployment
+
+resources:
+  apps:
+    myapp:
+      name: test-app-config-no-deployment
+      description: my_app_description
+      source_code_path: ./app
+      config:
+        command: ["python", "app.py"]
+        env:
+          - name: MY_ENV_VAR
+            value: test_value

acceptance/bundle/resources/apps/config-no-deployment/out.test.toml

@@ -0,0 +1,50 @@
+
+=== Deploy: app created with no_compute; config is not deployed until the app starts
+>>> [CLI] bundle deploy
+Uploading bundle files to /Workspace/Users/[USERNAME]/.bundle/app-config-no-deployment/default/files...
+Deploying resources...
+Updating deployment state...
+Deployment complete!
+
+=== Plan is a no-op: config/source_code_path drift is skipped while the app has no deployment
+>>> [CLI] bundle plan
+Plan: 0 to add, 0 to change, 0 to delete, 1 unchanged
+
+=== Both deploy-only fields are skipped with reason "no deployment"
+>>> [CLI] bundle plan -o json
+{
+  "config": {
+    "action": "skip",
+    "reason": "no deployment",
+    "old": {
+      "command": [
+        "python",
+        "app.py"
+      ],
+      "env": [
+        {
+          "name": "MY_ENV_VAR",
+          "value": "test_value"
+        }
+      ]
+    },
+    "new": {
+      "command": [
+        "python",
+        "app.py"
+      ],
+      "env": [
+        {
+          "name": "MY_ENV_VAR",
+          "value": "test_value"
+        }
+      ]
+    }
+  },
+  "source_code_path": {
+    "action": "skip",
+    "reason": "no deployment",
+    "old": "/Workspace/Users/[USERNAME]/.bundle/app-config-no-deployment/default/files/app",
+    "new": "/Workspace/Users/[USERNAME]/.bundle/app-config-no-deployment/default/files/app"
+  }
+}

acceptance/bundle/resources/apps/config-no-deployment/output.txt

@@ -0,0 +1,10 @@
+echo "*" > .gitignore
+
+title "Deploy: app created with no_compute; config is not deployed until the app starts"
+trace $CLI bundle deploy
+
+title "Plan is a no-op: config/source_code_path drift is skipped while the app has no deployment"
+trace $CLI bundle plan | contains.py "Plan: 0 to add, 0 to change, 0 to delete, 1 unchanged"
+
+title "Both deploy-only fields are skipped with reason \"no deployment\""
+trace $CLI bundle plan -o json | jq '.plan[].changes | {config, source_code_path}'

acceptance/bundle/resources/apps/config-no-deployment/script

@@ -0,0 +1,11 @@
+Local = true
+Cloud = false
+
+# Asserts plan classification, not requests; drop the inherited RecordRequests.
+RecordRequests = false
+
+Ignore = [".databricks"]
+
+# Direct engine only: the skip logic lives in OverrideChangeDesc. Mirrors
+# lifecycle-started-omitted.
+EnvMatrix.DATABRICKS_BUNDLE_ENGINE = ["direct"]

acceptance/bundle/resources/apps/config-no-deployment/test.toml

@@ -0,0 +1,10 @@
+bundle:
+  name: app-git-source-no-deployment
+
+resources:
+  apps:
+    myapp:
+      name: test-app-git-source-no-deployment
+      description: my_app_description
+      git_source:
+        branch: main

acceptance/bundle/resources/apps/git-source-no-deployment/databricks.yml

@@ -0,0 +1,26 @@
+
+=== Deploy: app created with no_compute; git_source is not deployed until the app starts
+>>> [CLI] bundle deploy
+Uploading bundle files to /Workspace/Users/[USERNAME]/.bundle/app-git-source-no-deployment/default/files...
+Deploying resources...
+Updating deployment state...
+Deployment complete!
+
+=== Plan is a no-op: git_source drift is skipped while the app has no deployment
+>>> [CLI] bundle plan
+Plan: 0 to add, 0 to change, 0 to delete, 1 unchanged
+
+=== git_source is skipped with reason "no deployment"
+>>> [CLI] bundle plan -o json
+{
+  "git_source": {
+    "action": "skip",
+    "reason": "no deployment",
+    "old": {
+      "branch": "main"
+    },
+    "new": {
+      "branch": "main"
+    }
+  }
+}