fix(appearance): unify zoom controls with a configurable default

DESIGN.md

@@ -95,6 +95,12 @@ App-level glue that remains local:
   selectors as a version-pinned integration contract: kit-ui dependency bumps
   that touch settings must pass the settings browser coverage in CI before
   adoption.
+- Fixed overlay rules in `frontend/src/app.css` keep kit-ui positioning shells
+  in viewport coordinates and restore interface zoom on their direct children.
+  These class selectors and child boundaries are a version-pinned integration
+  contract. Dependency updates must pass the zoom menu geometry coverage in
+  `frontend/e2e/appearance-a11y.spec.ts`. The date picker retains its current
+  scale until kit-ui can size its fixed-width panel for zoom.
 
 Relative date ranges follow kit-ui semantics: "Last N days" spans N calendar
 days inclusive of today. `presetRange()` (dateRangeSelector.ts) and

docs/configuration.md

@@ -183,6 +183,7 @@ require_auth = true
 cursor_admin_api_key = "key_xxxxx"
 daemon_idle_timeout = "20m"
 chart_palette = "agentsview"
+zoom_level = 120
 ```
 
 | Field                               | Description                                                                                                                                                                                                                                               |
@@ -203,6 +204,7 @@ chart_palette = "agentsview"
 | `public_origins`                    | Additional trusted origins for request Host/Origin checks                                                                                                                                                                                                                  |
 | `daemon_idle_timeout`               | Idle timeout for detached writable daemons; set to `"0s"` to keep them alive                                                                                                                                                                              |
 | `chart_palette`                     | Server-wide categorical chart colors: `"agentsview"` (default) or `"matplotlib"`; also configurable under **Settings > Appearance**                                                                                                                       |
+| `zoom_level`                        | Default interface zoom for clients without a local preference: `67`, `75`, `80`, `90`, `100`, `110`, `120`, `125`, `130`, `150`, `175`, or `200`. Defaults to `100` when omitted. Restart the daemon after manual edits                                   |
 | `disabled_agents`                   | Session providers to exclude from local filesystem scanning; changes require a daemon restart — see [Disabling Session Providers](#disabling-session-providers)                                                                                           |
 | `[proxy]`                           | Managed proxy configuration table — see [Remote Access](/docs/remote-access/)                                                                                                                                                                             |
 | `disable_update_check`              | Disable the automatic update check (see [Privacy](#privacy-and-telemetry))                                                                                                                                                                                |

docs/usage.md

@@ -1164,7 +1164,7 @@ organized into sections:
 | Section           | What You Can Configure                                                                                                                                                                                    |
 | ----------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | Language          | Interface language (English, French, Japanese, Korean, Simplified Chinese, or Traditional Chinese)                                                                                                        |
-| Appearance        | Theme (light/dark), high-contrast mode, chart colors, message layout, text size, block visibility, desktop zoom level                                                                                     |
+| Appearance        | Theme (light/dark), high-contrast mode, chart colors, message layout, zoom, block visibility                                                                                                              |
 | Date ranges       | Browser-local checkbox for linking date selections across Sessions, Usage, Activity, Trends, and Quality                                                                                                  |
 | Agent Directories | Custom paths for each agent's session files. For Devin CLI, point at the local root that contains `cli/` (for example a redacted `.../Application Support/devin` path), not copied config or OAuth files. |
 | Terminal          | Default terminal emulator for session resume                                                                                                                                                              |
@@ -1178,15 +1178,17 @@ organized into sections:
 
 ![Chart color palette setting](/docs/assets/generated/screenshots/settings-chart-colors.png)
 
-Language, theme, high contrast, message layout, text size, block visibility,
-desktop zoom, and Date ranges preferences are stored in the browser. **Chart
-colors** are the exception within Appearance: the selected palette is saved
-server-wide as `chart_palette` in `~/.agentsview/config.toml`. Agent directory
-overrides, terminal settings, the saved GitHub token, and the local server's
-remote-access authentication settings also use that file. Worktree mapping rules
-moved to the [Data page](/docs/data/#rules) and live in the local archive
-database. See [Remote Access](/docs/remote-access/) for details on the remote
-access settings.
+Language, theme, high contrast, message layout, zoom, block visibility, and
+Date ranges preferences use local storage in the current browser or desktop
+webview profile. Each profile keeps its own choices. The optional `zoom_level`
+setting supplies a default when no local zoom or text-size preference exists.
+
+Chart colors use the server-wide `chart_palette` setting in
+`~/.agentsview/config.toml`. Agent directory overrides, terminal settings, the
+saved GitHub token, and the local server's remote-access authentication
+settings also use that file. Worktree mapping rules moved to the
+[Data page](/docs/data/#rules) and live in the local archive database. See
+[Remote Access](/docs/remote-access/) for details on the remote access settings.
 
 ______________________________________________________________________
 
@@ -1200,12 +1202,23 @@ commit, and links to the changelog and GitHub repository.
 
 ______________________________________________________________________
 
-## Desktop Zoom
+## Zoom
+
+Settings > Appearance has one Zoom setting for the whole interface in both the
+browser and desktop app. It offers 67%, 75%, 80%, 90%, 100%, 110%, 120%, 125%,
+130%, 150%, 175%, and 200%. Existing text-size preferences migrate to Zoom. A
+saved non-default zoom takes precedence. Otherwise, a saved non-default text
+size takes precedence over 100%.
+
+To set the default for clients without a local preference, edit
+`~/.agentsview/config.toml` and add `zoom_level = 120`. The field accepts the
+twelve values listed above. Restart the daemon and reload the client after a
+manual edit. Zoom changes in the interface stay local to that browser or
+desktop webview and do not write `config.toml`.
 
-In the desktop app, use `Cmd+Plus` and `Cmd+Minus` (or `Ctrl+Plus` /
-`Ctrl+Minus` on Windows) to zoom in and out. `Cmd+0` resets to the default zoom
-level. The zoom level can also be set in the Settings page under the
-**Appearance** tab.
+The desktop status bar and shortcuts change the same local setting. Use
+`Cmd+Plus` and `Cmd+Minus`, or `Ctrl+Plus` and `Ctrl+Minus` on Windows, to zoom
+in and out. `Cmd+0`, or `Ctrl+0` on Windows, resets Zoom to 100%.
 
 ______________________________________________________________________
 
@@ -1220,8 +1233,7 @@ sessions.
 ![Dark theme](/docs/assets/generated/screenshots/theme-dark.png)
 
 Settings > Appearance also offers a **high-contrast** mode for greater
-legibility and a **text size** control (90–130%) that scales message and
-interface text. Both preferences are saved and persist across sessions.
+legibility. The theme and high-contrast preferences persist across sessions.
 
 The **Chart colors** control selects the categorical palette used by the
 dashboard skill trend, Trends, and Usage charts. Choose **Agentsview** for the