chore: lower min VS Code to 1.105, remove chat sidebar, harden deeplink params

- engines.vscode -> ^1.105.0, @types/vscode -> 1.105.0, CI integration
  matrix pinned at 1.105.1 so the latest Cursor stable can install again.
- Remove the Coder Chat (Experimental) secondary sidebar and every supporting
  piece: webview provider, agents experiment fetch, coder.agentsEnabled
  context, chatId deeplink handoff, pendingChatId memento helpers,
  @repo/chat iframe shim package, ChatApi IPC contract.
- Add regression tests pinning the permissive deeplink contract so older
  Coder servers still emitting chatId and newer servers emitting unknown
  params both keep working.

Closes #974

Author: EhabY

.github/workflows/ci.yaml

@@ -33,7 +33,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # Minimum supported version: VS Code 1.106 (Oct 2025) -> Electron 37 -> Node 22
+        # Minimum supported version: VS Code 1.105 (Sept 2025) -> Electron 37 -> Node 22
         # See https://github.com/ewanharris/vscode-versions for version mapping.
         # Older Electron stays Linux-only; "latest" smoke-tests Windows + macOS too.
         include:
@@ -60,7 +60,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - { os: ubuntu-24.04, name: Linux, vscode-version: "1.106.0" }
+          - { os: ubuntu-24.04, name: Linux, vscode-version: "1.105.0" }
           - { os: ubuntu-24.04, name: Linux, vscode-version: "stable" }
           - { os: windows-2025, name: Windows, vscode-version: "stable" }
           - { os: macos-15, name: macOS, vscode-version: "stable" }

.vscode-test.mjs

@@ -1,10 +1,10 @@
 import { defineConfig } from "@vscode/test-cli";
 
 // VS Code to Electron/Node version mapping:
-//   VS Code 1.106 (Oct 2025) -> Electron 37, Node 22 - Minimum supported
+//   VS Code 1.105 (Sept 2025) -> Electron 37, Node 22 - Minimum supported
 //   VS Code stable             -> Latest
 // See https://github.com/ewanharris/vscode-versions for version mapping
-const versions = ["1.106.0", "stable"];
+const versions = ["1.105.0", "stable"];
 
 const baseConfig = {
 	files: "out/test/integration/**/*.test.js",

CHANGELOG.md

@@ -42,6 +42,13 @@
   around `cmd.exe` on Windows) and a recurring command-injection risk
   when deployment-supplied values like workspace names or template
   parameters contained spaces, quotes, or shell metacharacters.
+- Minimum supported VS Code lowered to 1.105 for Cursor compatibility.
+
+### Removed
+
+- The "Coder Chat (Experimental)" secondary sidebar and its `agents`
+  experiment gate. Deeplinks that still include `chatId` continue to open
+  the workspace; the parameter is now silently ignored.
 
 ### Fixed
 

CONTRIBUTING.md

@@ -66,8 +66,6 @@ The extension provides several sidebar panels:
   indicators, quick actions, and search.
 - **Coder Tasks** - a React webview for creating, monitoring, and managing AI
   agent tasks with real-time log streaming.
-- **Coder Chat** - an embedded chat UI for delegating tasks to AI coding agents
-  (gated behind the `coder.agentsEnabled` context flag).
 
 There are also notifications for outdated workspace templates and for workspaces
 that are close to shutting down.
@@ -176,7 +174,7 @@ This extension targets the Node.js version bundled with VS Code's Electron:
 
 | VS Code | Electron | Node.js | Status            |
 | ------- | -------- | ------- | ----------------- |
-| 1.106   | 37       | 22      | Minimum supported |
+| 1.105   | 37       | 22      | Minimum supported |
 | stable  | latest   | varies  | Also tested in CI |
 
 When updating the minimum Node.js version, update these files:

README.md

@@ -20,9 +20,6 @@ The Coder Remote extension connects your editor to
   metadata and app statuses at a glance.
 - **Coder Tasks** - create, monitor, and manage AI agent tasks directly from
   the sidebar with real-time log streaming.
-- **Coder Chat** - delegate development tasks to AI coding agents from the
-  sidebar. Requires [Coder Agents](https://coder.com/docs/ai-coder/agents) to
-  be enabled on your deployment.
 - **Multi-deployment support** - connect to multiple Coder deployments and
   switch between them without losing credentials.
 - **Dev container support** - open dev containers running inside workspaces.

package.json

@@ -278,13 +278,6 @@
 					"title": "Coder Tasks",
 					"icon": "media/tasks-logo.svg"
 				}
-			],
-			"secondarySidebar": [
-				{
-					"id": "coderChat",
-					"title": "Coder Chat (Experimental)",
-					"icon": "media/shorthand-logo.svg"
-				}
 			]
 		},
 		"views": {
@@ -317,15 +310,6 @@
 					"icon": "media/tasks-logo.svg",
 					"when": "coder.authenticated"
 				}
-			],
-			"coderChat": [
-				{
-					"type": "webview",
-					"id": "coder.chatPanel",
-					"name": "Coder Chat (Experimental)",
-					"icon": "media/shorthand-logo.svg",
-					"when": "coder.agentsEnabled"
-				}
 			]
 		},
 		"viewsWelcome": [
@@ -449,12 +433,6 @@
 				"category": "Coder",
 				"icon": "$(refresh)"
 			},
-			{
-				"command": "coder.chat.refresh",
-				"title": "Refresh Chat",
-				"category": "Coder",
-				"icon": "$(refresh)"
-			},
 			{
 				"command": "coder.applyRecommendedSettings",
 				"title": "Apply Recommended SSH Settings",
@@ -571,10 +549,6 @@
 					"command": "coder.tasks.refresh",
 					"when": "false"
 				},
-				{
-					"command": "coder.chat.refresh",
-					"when": "false"
-				},
 				{
 					"command": "coder.applyRecommendedSettings"
 				}
@@ -616,11 +590,6 @@
 					"command": "coder.tasks.refresh",
 					"when": "coder.authenticated && view == coder.tasksPanel",
 					"group": "navigation@1"
-				},
-				{
-					"command": "coder.chat.refresh",
-					"when": "view == coder.chatPanel",
-					"group": "navigation@1"
 				}
 			],
 			"view/item/context": [
@@ -713,7 +682,7 @@
 		"@types/react-dom": "catalog:",
 		"@types/semver": "^7.7.1",
 		"@types/ua-parser-js": "0.7.39",
-		"@types/vscode": "1.106.0",
+		"@types/vscode": "1.105.0",
 		"@types/vscode-webview": "catalog:",
 		"@types/ws": "^8.18.1",
 		"@typescript-eslint/eslint-plugin": "^8.59.3",
@@ -758,7 +727,7 @@
 	],
 	"packageManager": "pnpm@11.1.2+sha224.6d287705d0efa6c2ba7a74795dc72a7800f64840f2bc0961cedba029",
 	"engines": {
-		"vscode": "^1.106.0",
+		"vscode": "^1.105.0",
 		"node": ">= 22"
 	},
 	"icon": "media/logo.png",