Extension edit tutorial (#2806)

* canvas-extension: new edit-tutorial extension

* canvas-extension: new edit-tutorial extension

* canvas-extension: new edit-tutorial extension

* Apply suggestions from code review

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Apply edits from code review

* Apply suggestions from code review

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Apply edits from code review

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Apply edits from code review

* Apply edits from code review

* Apply edits from code review

* Apply edits from code review

* Apply suggestions from code review

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Apply edits from code review

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Apply edits from code review

* Apply suggestions from code review

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Apply edits from code review

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Apply edits from code review

* Apply suggestions from code review

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* improve: create tutorial from past commits

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Apply edit from code review

* Apply edit from code review

* Apply edits from code review

* Apply suggestions from code review

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Apply edit from code review

* apply review, preserve canvas in repo project sessions

Apply edit from code review

improve: preserve canvas render in project from repo

code-review: perform local code review

resolve: preserving canvas for repo projects

resolve: preserving canvas for repo projects

code-review: perform local code review

* Apply suggestions from code review

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Apply edit from code review

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Apply edit from code review

* Apply edit from code review

* Apply edits from code review

* Apply edits from code review

* Apply suggestions from code review

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Apply edits from code review

* resolve: reviewed formatting error

* Apply edit from code review

---------

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

.github/plugin/marketplace.json

@@ -613,6 +613,12 @@
       "description": "Task Researcher and Task Planner for intermediate to expert users and large codebases - Brought to you by microsoft/edge-ai",
       "version": "1.0.0"
     },
+    {
+      "name": "edit-tutorial",
+      "source": "plugins/edit-tutorial",
+      "description": "Turn the code edits Copilot made in your session into an interactive lesson: a step-by-step walkthrough of each change with before/after views and quizzes, then a hands-on exercise that varies those edits so you finish the change yourself.",
+      "version": "1.0.0"
+    },
     {
       "name": "elasticsearch",
       "description": "Official Elastic plugin for GitHub Copilot — translate natural language to ES|QL queries, ingest data, manage Elasticsearch security (authn, authz, audit), and troubleshoot clusters. Powered by the official Elastic agent skills repository.",