docs: add /share html and /mcp auth from v1.0.15

- Add /share html command to ch01 commands table and ch02 Share session section
- Add /mcp auth command to ch06 additional MCP commands table

New in v1.0.15 (2026-04-01):
- /share html: exports sessions as self-contained interactive HTML files
- /mcp auth: re-authenticate MCP OAuth servers with account switching support

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

Author: DanWahlin

01-setup-and-first-steps/README.md

@@ -431,7 +431,7 @@ That's it for getting started! As you become comfortable, you can explore additi
 | `/rewind` | Open a timeline picker to roll back to any earlier point in the conversation |
 | `/usage` | Display session usage metrics and statistics |
 | `/session` | Show session info and workspace summary |
-| `/share` | Export session as markdown file or GitHub gist |
+| `/share` | Export session as a markdown file, GitHub gist, or self-contained HTML file |
 
 ### Help and Feedback
 

02-context-conversations/README.md

@@ -470,6 +470,10 @@ copilot
 
 > /share gist
 # Creates a GitHub gist with the session
+
+> /share html
+# Exports session as a self-contained interactive HTML file
+# Useful for sharing polished session reports with teammates or saving for reference
 ```
 
 </details>

06-mcp-servers/README.md

@@ -896,6 +896,7 @@ Beyond `/mcp show`, there are several other commands for managing your MCP serve
 | `/mcp enable <server-name>` | Enable a disabled server |
 | `/mcp disable <server-name>` | Temporarily disable a server |
 | `/mcp delete <server-name>` | Remove a server permanently |
+| `/mcp auth <server-name>` | Re-authenticate with an MCP server that uses OAuth (e.g., after switching accounts) |
 
 For most of this course, `/mcp show` is all you need. The other commands become useful as you manage more servers over time.