feat: Add a walkthrough

package.json

@@ -2549,6 +2549,63 @@
                 },
                 "when": "false"
             }
+        ],
+        "walkthroughs": [
+            {
+                "id": "deepnoteWelcome",
+                "title": "%contributes.walkthroughs.deepnoteWelcome.title%",
+                "description": "%contributes.walkthroughs.deepnoteWelcome.description%",
+                "steps": [
+                    {
+                        "id": "deepnote.exploreProjects",
+                        "title": "%contributes.walkthroughs.deepnoteWelcome.steps.exploreProjects.title%",
+                        "description": "%contributes.walkthroughs.deepnoteWelcome.steps.exploreProjects.description%",
+                        "media": {
+                            "image": "resources/walkthroughs/explore-projects.png",
+                            "altText": "%contributes.walkthroughs.deepnoteWelcome.steps.exploreProjects.media.altText%"
+                        },
+                        "completionEvents": [
+                            "onView:deepnoteExplorer"
+                        ]
+                    },
+                    {
+                        "id": "deepnote.notebookBlocks",
+                        "title": "%contributes.walkthroughs.deepnoteWelcome.steps.notebookBlocks.title%",
+                        "description": "%contributes.walkthroughs.deepnoteWelcome.steps.notebookBlocks.description%",
+                        "media": {
+                            "image": "resources/walkthroughs/notebook-blocks.png",
+                            "altText": "%contributes.walkthroughs.deepnoteWelcome.steps.notebookBlocks.media.altText%"
+                        },
+                        "completionEvents": [
+                            "onStepSelected"
+                        ]
+                    },
+                    {
+                        "id": "deepnote.connectDataSources",
+                        "title": "%contributes.walkthroughs.deepnoteWelcome.steps.connectDataSources.title%",
+                        "description": "%contributes.walkthroughs.deepnoteWelcome.steps.connectDataSources.description%",
+                        "media": {
+                            "image": "resources/walkthroughs/integrations.png",
+                            "altText": "%contributes.walkthroughs.deepnoteWelcome.steps.connectDataSources.media.altText%"
+                        },
+                        "completionEvents": [
+                            "onCommand:deepnote.manageIntegrations"
+                        ]
+                    },
+                    {
+                        "id": "deepnote.setupEnvironment",
+                        "title": "%contributes.walkthroughs.deepnoteWelcome.steps.setupEnvironment.title%",
+                        "description": "%contributes.walkthroughs.deepnoteWelcome.steps.setupEnvironment.description%",
+                        "media": {
+                            "image": "resources/walkthroughs/environments.png",
+                            "altText": "%contributes.walkthroughs.deepnoteWelcome.steps.setupEnvironment.media.altText%"
+                        },
+                        "completionEvents": [
+                            "onView:deepnoteEnvironments"
+                        ]
+                    }
+                ]
+            }
         ]
     },
     "enabledApiProposals": [

package.nls.json

@@ -295,5 +295,22 @@
     "deepnote.commands.environments.managePackages.title": "Manage Packages",
     "deepnote.commands.environments.editName.title": "Rename Environment",
     "deepnote.commands.environments.refresh.title": "Refresh",
-    "deepnote.commands.environments.selectForNotebook.title": "Select Environment for Notebook"
+    "deepnote.commands.environments.selectForNotebook.title": "Select Environment for Notebook",
+    "contributes.walkthroughs.deepnoteWelcome.title": "Get Started with Deepnote",
+    "contributes.walkthroughs.deepnoteWelcome.description": "Your first steps to set up and explore Deepnote notebooks in VS Code.",
+    "contributes.walkthroughs.deepnoteWelcome.steps.exploreProjects.title": "Explore Your Projects",
+    "contributes.walkthroughs.deepnoteWelcome.steps.exploreProjects.description": {
+        "message": "Use the Deepnote sidebar to browse, create, import, and organize your projects and notebooks.\n[Open Deepnote Explorer](command:deepnoteExplorer.focus)",
+        "comment": ["{Locked='command:deepnoteExplorer.focus'}"]
+    },
+    "contributes.walkthroughs.deepnoteWelcome.steps.exploreProjects.media.altText": "The Deepnote Explorer sidebar showing projects and notebooks",
+    "contributes.walkthroughs.deepnoteWelcome.steps.notebookBlocks.title": "Create Your First Notebook",
+    "contributes.walkthroughs.deepnoteWelcome.steps.notebookBlocks.description": "Deepnote notebooks support multiple block types beyond code — add SQL queries, charts, text, and input widgets to build interactive data apps. Use the cell toolbar or command palette to insert different block types.",
+    "contributes.walkthroughs.deepnoteWelcome.steps.notebookBlocks.media.altText": "A Deepnote notebook showing different block types",
+    "contributes.walkthroughs.deepnoteWelcome.steps.connectDataSources.title": "Connect to Your Data Sources",
+    "contributes.walkthroughs.deepnoteWelcome.steps.connectDataSources.description": "Set up integrations to connect your notebooks to databases, data warehouses, and other services. Query your data directly from SQL blocks.",
+    "contributes.walkthroughs.deepnoteWelcome.steps.connectDataSources.media.altText": "The Manage Integrations panel for connecting data sources",
+    "contributes.walkthroughs.deepnoteWelcome.steps.setupEnvironment.title": "Set Up a Python Environment",
+    "contributes.walkthroughs.deepnoteWelcome.steps.setupEnvironment.description": "Create and manage Python environments for your notebooks. Install packages, configure dependencies, and switch between environments.",
+    "contributes.walkthroughs.deepnoteWelcome.steps.setupEnvironment.media.altText": "The Deepnote Environments panel showing available environments"
 }