docs: switch job list view control to a toggle button

The plan now uses a button that flips its own text and icon (Compact +
ListIcon / Detailed + ViewFullScreenIcon), mirroring the existing
stopAllButton idiom, instead of a "View" dropdown. It sits beside the folder
filter on the same row via a border layout, so the sidebar header keeps its
current height and the toolbar row is untouched.

The label helpers become nextJobListView and viewToggleText, with tests and
the verification steps updated to match.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

docs/PLAN-compact-job-list.md

@@ -14,8 +14,15 @@ persisted in `gosentry.json`, so it survives a restart like `Config.Theme` does.
 
 ## Design decisions
 
-- **Control lives in the Jobs sidebar header** — a "View" dropdown beside the
-  existing "Folder" filter. Switching is one click, next to what it affects.
+- **Control lives in the Jobs sidebar header** — a toggle button on the same row
+  as the existing "Folder" filter, to its right. Switching is one click, next to
+  what it affects. Fyne 2.7.4 has no dedicated toggle widget, so the button
+  flips its own text and icon on tap, exactly like `stopAllButton`
+  ("Disable auto" / "Enable auto") already does in `src/ui/jobs_view.go`. Like
+  that button it is labelled with the *action*, not the current state:
+  `Compact` + `theme.ListIcon()` while detailed, `Detailed` +
+  `theme.ViewFullScreenIcon()` while compact. The toolbar row (New job / Edit /
+  Run now / Pause / Delete) is left untouched.
 - **Compact row = name + status** on a single line. Same height as one label,
   so per-job health stays visible at a glance.
 - **One list, one row template.** `widget.List` caches the row template's
@@ -71,33 +78,40 @@ reasoning.
   `app.StatusText`) and **re-apply visibility on every update**: a full
   `Refresh` reuses the already-visible row objects, which were created under the
   old mode, so visibility cannot be left to `CreateItem` alone.
-- **View dropdown**: `widget.NewSelect([]string{viewLabelDetailed,
-  viewLabelCompact}, …)`. Its handler maps label → `domain.JobListView`, returns
-  early when unchanged, updates `compactList`, persists via
-  `svc.SetJobListView` (on error `dialog.ShowError` and revert the select, per
-  the error rule in `docs/STANDARDS.md`), then calls `list.Refresh()`. The
-  selection and the details panel are untouched by the switch.
-- **Header layout**: replace the current `"Folder"` caption + `folderSelect`
-  pair in `sidebarHeader` with
-  `container.NewGridWithColumns(2, <Folder caption + select>, <View caption +
-  select>)`, so the second dropdown costs no extra header height and the list
-  keeps the same room. The 400px `minJobsSidebarWidth` comfortably fits two
-  short selects.
+- **View toggle button**: `viewButton := widget.NewButtonWithIcon(…)` built with
+  the text/icon for the current mode. Its `OnTapped` flips the mode
+  (`nextJobListView`), persists via `svc.SetJobListView` — on error
+  `dialog.ShowError` and roll the local mode back without touching the button,
+  per the error rule in `docs/STANDARDS.md` — then applies the new
+  `SetText`/`SetIcon` and calls `list.Refresh()`. This mirrors `stopAllButton`'s
+  flip-and-revert handler in the same file. The list selection and the details
+  panel are untouched by the switch.
+- **Header layout**: keep the `"Folder"` caption and `folderSelect` exactly as
+  they are, and put the button beside the select on the same row —
+  `container.NewBorder(nil, nil, nil, viewButton, folderSelect)`. The border
+  layout gives the button its `MinSize` on the right and lets the select fill
+  the rest, so the header gains no height and the toolbar row is not touched.
 
-### 4. `src/ui/jobs_view_helpers.go` — label mapping
+### 4. `src/ui/jobs_view_helpers.go` — button state helpers
 
-`viewLabelDetailed`/`viewLabelCompact` consts plus pure
-`viewLabel(domain.JobListView) string` and
-`viewFromLabel(string) domain.JobListView`, mirroring
-`themeLabel`/`themeFromLabel` (`src/ui/settings_view.go:370`) so the on-disk
-strings never reach the user.
+Two pure helpers so the on-disk strings never reach the user and the button's
+wording is testable without a running GUI:
+
+- `nextJobListView(current domain.JobListView) domain.JobListView` — flips the
+  mode, treating anything that is not `compact` as detailed (via `IsCompact`).
+- `viewToggleText(current domain.JobListView) string` — the action label:
+  `"Compact"` while detailed, `"Detailed"` while compact.
+
+The icon choice stays inline at the button, next to `SetText`/`SetIcon`, so the
+helpers file keeps its "no widget imports" character.
 
 ### 5. Tests
 
 - `src/domain/config_test.go` (new): `JobListView.IsCompact` for `"compact"`,
   `"detailed"`, `""`, and a junk value.
-- `src/ui/jobs_view_test.go`: `viewLabel`/`viewFromLabel` round-trip, and
-  unknown/empty label → detailed.
+- `src/ui/jobs_view_test.go`: `nextJobListView` flips both ways and maps an
+  empty/unknown value to compact (since such a value reads as detailed), and
+  `viewToggleText` returns the action label for each mode.
 - `src/app/operations_test.go`: `TestSetJobListViewPersistsToConfigFile`
   modelled on `TestSetGlobalPausePersistsToConfigFile`
   (`src/app/operations_test.go:553`) — switch to compact, unmarshal
@@ -125,9 +139,11 @@ export PATH="/c/msys64/ucrt64/bin:$PATH"; export CGO_ENABLED=1; go build ./... &
 ```
 
 2. Run the app (`go run ./cmd/gosentry`) with several jobs configured and check:
-   - Default launch is Detailed and looks exactly as before.
-   - Switching to Compact collapses every row to one line, name left / status
-     right, and many more jobs fit without scrolling.
+   - Default launch is Detailed and looks exactly as before; the button reads
+     "Compact" and sits to the right of the folder filter without making the
+     header taller.
+   - Tapping it collapses every row to one line, name left / status right, many
+     more jobs fit without scrolling, and the button now reads "Detailed".
    - Selection and the details panel keep working after switching, in both
      directions, including with a folder filter active and with an empty list.
    - A running job's status still updates live in compact rows.