Add Azure Connector Namespaces canvas extension 🤖🤖🤖 (#2250)

* Add MCP Connectors (connector-namespaces) canvas extension

A Copilot CLI canvas extension for browsing and adding MCP connectors
from an Azure Connector Namespace into a Copilot session. Sign-in is
dependency-free (OAuth 2.0 auth-code + PKCE via the Azure CLI public
client, loopback redirect); network access is restricted to the public
Azure Resource Manager endpoint. MIT licensed.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Update Connector Namespaces canvas extension

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Harden Connector Namespaces canvas extension

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Sanitize connector icon brand colors

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Add Connector Namespace playground actions

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: a986299f-86be-46c3-9562-cbf7d25174cf

* Replace sandbox skill with native tool

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: a986299f-86be-46c3-9562-cbf7d25174cf

* Clarify connector disconnect action

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: a986299f-86be-46c3-9562-cbf7d25174cf

* Color disconnect action red

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: a986299f-86be-46c3-9562-cbf7d25174cf

* Add connector extension plugin manifest

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: a986299f-86be-46c3-9562-cbf7d25174cf

* Address connector canvas review feedback

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: a986299f-86be-46c3-9562-cbf7d25174cf

* Remove legacy connector canvas manifest

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: a986299f-86be-46c3-9562-cbf7d25174cf

* Address remaining connector review feedback

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: a986299f-86be-46c3-9562-cbf7d25174cf

* Harden connector review fixes

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: a986299f-86be-46c3-9562-cbf7d25174cf

* Harden connector convergence

Address the latest connector review batch across config persistence, executable trust, reauthentication, JSON-RPC transport, smoke safety, and accessibility.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Copilot-Session: a986299f-86be-46c3-9562-cbf7d25174cf

* Use native HTTP connector configs

Persist Connector Namespace MCP servers as direct HTTPS entries with API-key headers, remove the stdio unwrap proxy, and exercise the native Streamable HTTP path in smoke coverage.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Copilot-Session: a986299f-86be-46c3-9562-cbf7d25174cf

* Secure persisted connector state

Create the Connector Namespace artifacts directory and saved gateway config with private permissions, and align the reduced-motion regression notes with the static fallback behavior.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Copilot-Session: a986299f-86be-46c3-9562-cbf7d25174cf

---------

Co-authored-by: Alex Yang <yangalex@microsoft.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

extensions/connector-namespaces/.github/plugin/plugin.json

@@ -0,0 +1,19 @@
+{
+  "name": "connector-namespaces",
+  "description": "Browse, connect, and open MCP connectors from an Azure Connector Namespace.",
+  "version": "1.1.0",
+  "author": {
+    "name": "Alex Yang",
+    "url": "https://github.com/alexyaang"
+  },
+  "keywords": [
+    "azure",
+    "connector-namespace",
+    "mcp",
+    "mcp-connectors",
+    "model-context-protocol",
+    "tool-discovery"
+  ],
+  "logo": "assets/preview.png",
+  "extensions": "."
+}