gui: Options, Scheduler, Speed Limiter, Batch, Grabber, and the tray icon

Continues the build order past the Add-URL/File-Info/Progress dialog flow.

- OptionsDialog: General/Save To/Connection/Downloads/Proxy/Sounds tabs, every
  control bound to a real settings.* key (contracts/schema/types/Settings.
  schema.json). The spec's File Types and Site Logins tabs have no settings.*
  backing (categories go through category.upsert, credentials through the
  Secret Service) so they don't exist here — a tab either binds to a real key
  or isn't shipped. diffChanged() sends only what actually changed, matching
  settings.set's "changed[] names exactly what took effect" contract.
- SchedulerDialog: per-queue schedule (schedule.get/set) plus maxConcurrent/
  onComplete (queue.upsert), Start Now/Stop. Queue.schema.json already carries
  the schedule so queue.list alone seeds the window.
- SpeedLimiterDialog: the live global limiter (limiter.get/set) — a different
  thing from Options' downloads.speedLimit* default. buildParams() enforces
  the schema's "0 with enabled true must not be offered".
- BatchDialog: clipboard-blob and {start..end}-wildcard tabs sharing one
  category/queue/start-mode footer into download.addBatch.
- GrabberWizard: 4-step QWizard (project label -> start URL/depth/filters ->
  file-type filter -> review), grabber.start feeding a poll+event.grabber.
  progress-driven review page, Finish = grabber.harvest for the checked files.
- TrayIcon: active-count tooltip, Show/Add URL/Pause All/Resume All/Speed
  Limiter submenu/Quit. Quit only closes the GUI — there is no RPC to stop
  veloxd itself, filed as a new gap in daemon-requests-m1.md. MainWindow now
  also hides to tray instead of closing when general.minimizeToTray is set.

Every dialog's non-widget logic (diffChanged, buildSchedule, buildParams,
parseUrlBlob/expandWildcard/buildAddBatchParams, buildFileTypes/
buildStartParams/buildHarvestParams) is a static pure function with its own
test, same shape as FileInfoDialog::buildSpec from the previous round.

Verified end-to-end against a running mockd under ASan+UBSan: all five
surfaces render real data (settings.get values, queue.list's two seeded
queues, limiter.get, a live grabber.start/status crawl returning 3 files) with
no sanitizer reports. gui-check (non-ASan) and dev (ASan+UBSan) presets both
build the whole repo clean; all gui-labeled ctest targets pass.

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01NSCdCWFXBTSBBK3MzWtJiC

gui/tests/CMakeLists.txt

@@ -82,6 +82,68 @@ set_tests_properties(gui_fileinfodialog PROPERTIES
     LABELS "gui"
     ENVIRONMENT "QT_QPA_PLATFORM=offscreen")
 
+# tst_optionsdialog — OptionsDialog::diffChanged, the "only send what changed" logic.
+#   Red when an unchanged key gets resent, or a key missing from `original` stops
+#   counting as changed.
+add_executable(tst_optionsdialog tst_optionsdialog.cpp)
+target_compile_features(tst_optionsdialog PRIVATE cxx_std_23)
+target_compile_options(tst_optionsdialog PRIVATE -Wall -Wextra -Wpedantic -Werror)
+target_link_libraries(tst_optionsdialog PRIVATE velox-gui-lib Qt6::Widgets Qt6::Test)
+add_test(NAME gui_optionsdialog COMMAND tst_optionsdialog)
+set_tests_properties(gui_optionsdialog PROPERTIES
+    LABELS "gui"
+    ENVIRONMENT "QT_QPA_PLATFORM=offscreen")
+
+# tst_speedlimiterdialog — SpeedLimiterDialog::buildParams.
+#   Red when disabling stops zeroing globalBps, or enabling at 0 KiB/s stops being
+#   clamped to 1 (Limiter.schema.json: enabled+0 "must not be offered").
+add_executable(tst_speedlimiterdialog tst_speedlimiterdialog.cpp)
+target_compile_features(tst_speedlimiterdialog PRIVATE cxx_std_23)
+target_compile_options(tst_speedlimiterdialog PRIVATE -Wall -Wextra -Wpedantic -Werror)
+target_link_libraries(tst_speedlimiterdialog PRIVATE velox-gui-lib Qt6::Widgets Qt6::Test)
+add_test(NAME gui_speedlimiterdialog COMMAND tst_speedlimiterdialog)
+set_tests_properties(gui_speedlimiterdialog PROPERTIES
+    LABELS "gui"
+    ENVIRONMENT "QT_QPA_PLATFORM=offscreen")
+
+# tst_schedulerdialog — SchedulerDialog::buildSchedule.
+#   Red when "use a schedule" unchecked stops sending JSON null, "run until it drains"
+#   stops nulling stopTime, or daysOfWeek/onceDate leak into the wrong mode.
+add_executable(tst_schedulerdialog tst_schedulerdialog.cpp)
+target_compile_features(tst_schedulerdialog PRIVATE cxx_std_23)
+target_compile_options(tst_schedulerdialog PRIVATE -Wall -Wextra -Wpedantic -Werror)
+target_link_libraries(tst_schedulerdialog PRIVATE velox-gui-lib Qt6::Widgets Qt6::Test)
+add_test(NAME gui_schedulerdialog COMMAND tst_schedulerdialog)
+set_tests_properties(gui_schedulerdialog PROPERTIES
+    LABELS "gui"
+    ENVIRONMENT "QT_QPA_PLATFORM=offscreen")
+
+# tst_batchdialog — parseUrlBlob, expandWildcard, buildAddBatchParams.
+#   Red when the clipboard parser stops deduping or lets a non-URL line through, the
+#   wildcard expander mishandles zero-padding or an ambiguous/malformed range, or
+#   addBatch params include an empty optional field or a stray queueId.
+add_executable(tst_batchdialog tst_batchdialog.cpp)
+target_compile_features(tst_batchdialog PRIVATE cxx_std_23)
+target_compile_options(tst_batchdialog PRIVATE -Wall -Wextra -Wpedantic -Werror)
+target_link_libraries(tst_batchdialog PRIVATE velox-gui-lib Qt6::Widgets Qt6::Test)
+add_test(NAME gui_batchdialog COMMAND tst_batchdialog)
+set_tests_properties(gui_batchdialog PROPERTIES
+    LABELS "gui"
+    ENVIRONMENT "QT_QPA_PLATFORM=offscreen")
+
+# tst_grabberwizard — buildFileTypes, buildStartParams, buildHarvestParams.
+#   Red when every file-type box unchecked stops meaning "every type" (null, not []),
+#   a blank filter stops becoming schema null, or a selected fileId goes missing from
+#   the harvest params.
+add_executable(tst_grabberwizard tst_grabberwizard.cpp)
+target_compile_features(tst_grabberwizard PRIVATE cxx_std_23)
+target_compile_options(tst_grabberwizard PRIVATE -Wall -Wextra -Wpedantic -Werror)
+target_link_libraries(tst_grabberwizard PRIVATE velox-gui-lib Qt6::Widgets Qt6::Test)
+add_test(NAME gui_grabberwizard COMMAND tst_grabberwizard)
+set_tests_properties(gui_grabberwizard PROPERTIES
+    LABELS "gui"
+    ENVIRONMENT "QT_QPA_PLATFORM=offscreen")
+
 # gui_no_download_logic — CLAUDE.md §3 as an executable check, not a hope.
 #   Red when: a download-logic token (curl, raw pwrite, sqlite, QSqlDatabase) appears
 #   under gui/src. grep exits 0 only when it finds a match, so a hit fails the test.