fix(ui-test): ensure app unconfigured before setup flow tests

Add Verify App Is Unconfigured keyword with retry logic.
Update Test Setup to reset app state before each setup flow test.
Remove stale Task 25 docs from tasks.md.

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

tests/robot/resources/common.resource

@@ -96,6 +96,19 @@ Is Auth Configured
     ${configured_val}=    Set Variable    ${configured}[0]
     RETURN    ${configured_val}
 
+Verify App Is Unconfigured
+    [Documentation]    Verify the app is in unconfigured state, retrying reset if needed.
+    FOR    ${i}    IN RANGE    3
+        ${configured}=    Is Auth Configured
+        IF    not ${configured}
+            RETURN
+        END
+        # Not configured but Is Auth Configured returned True - reset again
+        Reset Application State
+        Sleep    1s
+    END
+    Fail    App still configured after 3 reset attempts
+
 Setup Master Password
     [Documentation]    Configure the master password via the setup endpoint.
     ${payload}=    Create Dictionary

tests/robot/ui/setup_flow.robot

@@ -20,7 +20,9 @@ Resource            ${CURDIR}/../resources/common.resource
 Resource            ${CURDIR}/../resources/ui_keywords.resource
 
 Test Setup          Run Keywords
-...                 Open Browser To Page    /setup
+...                 Reset Application State
+...                 AND    Verify App Is Unconfigured
+...                 AND    Open Browser To Page    /setup
 ...                 AND    Wait For Elements State    id=setup-form    visible    timeout=5s
 
 Test Teardown       Run Keywords