docs: add 1.x preview release notes since v1.2.0-prerelease.202610091519

docs/1.x-preview-guide.md

@@ -118,6 +118,62 @@ Items actively being finalized before 1.x becomes the default (`latest`) release
 
 ### Recent Releases
 
+#### `v1.2.0-prerelease.202610261519`
+- **Resume keeps launch options**: Resuming a session restores its `--permission` and `--add-workspace` values unless you pass them again.
+- **MCP sign-in**: Older saved OAuth credentials no longer block token use or signing in again.
+
+#### `v1.2.0-prerelease.202610231517`
+- **Google MCP servers**: Google Workspace and BigQuery MCP servers stay connected instead of expiring after about an hour.
+
+#### `v1.2.0-prerelease.202610231216`
+- **MCP sign-in**: Fixed sign-in for MCP servers that validate the OAuth issuer.
+- **Queued messages**: Queued messages stay visible until the agent starts processing them.
+
+#### `v1.2.0-prerelease.202610230921`
+- **Slash-command hints**: Argument hints appear beside commands as you type.
+
+#### `v1.2.0-prerelease.202610221516`
+- **Reasoning settings**: The effort picker is hidden for models with only one effort level.
+- **Corporate certificates**: Auggie trusts your system's certificate authorities.
+
+#### `v1.2.0-prerelease.202610201517`
+- **Session sharing**: Gist-based session sharing is removed.
+
+#### `v1.2.0-prerelease.202610191517`
+- **Indexing status**: Auggie explains when indexing is disabled or a workspace has too many files.
+
+#### `v1.2.0-prerelease.202610191214`
+- **Sign-in**: Auggie shows a login screen when you are not signed in.
+
+#### `v1.2.0-prerelease.202610190922`
+- **Live print output**: Use `--mode stream` to see text and tool activity as it happens.
+
+#### `v1.2.0-prerelease.202610161521`
+- **Shell setting**: Short shell names such as `bash`, `zsh`, and `powershell` work in settings again.
+
+#### `v1.2.0-prerelease.202610160920`
+- **ANSI theme**: The `ansi` theme, using only standard terminal colors, is back.
+
+#### `v1.2.0-prerelease.202610151215`
+- **Account details**: `/about` shows the signed-in user and tenant.
+- **Custom commands**: Commands in nested folders and `.txt` files load, with argument hints.
+
+#### `v1.2.0-prerelease.202610150920`
+- **Notifications**: The `notificationMode` setting plays a bell or shows a desktop notification when the agent finishes or asks a question.
+- **Custom agents**: Existing custom agent files work, and you can browse and create agents.
+
+#### `v1.2.0-prerelease.202610141517`
+- **Context usage**: The footer shows context usage before the first response.
+
+#### `v1.2.0-prerelease.202610140920`
+- **Private base images**: `cloud environment rebuild` and `apply` accept `--registry-credential` for private images.
+
+#### `v1.2.0-prerelease.202610121519`
+- **Hooks**: Plugin hooks behave as they did in 0.x, and `/hooks` flags matchers that use old tool names.
+
+#### `v1.2.0-prerelease.202610120921`
+- **Default environment image**: `cloud environment init` uses the Cosmos Default image.
+
 #### `v1.2.0-prerelease.202610091519`
 - **MCP Reliability**: Gracefully handle and report status on rejected targeted MCP server restarts.