fix e2e: update selectors and fail2ban check

- 01_setup_and_auth: use xpath alert locator instead of css
- 02_ban_records: check fail2ban-client status instead of custom script
- Docs/Tasks.md: remove resolved task entries

Docs/Tasks.md

@@ -1,45 +1,3 @@
-## Task: 01 Setup And Auth — Invalid Session Duration Shows Validation Error
-
-**Test:** `Invalid Session Duration Shows Validation Error`
-**Suite:** `01_setup_and_auth.robot`
-
-**Step That Fails:** Waiting for validation alert on Session Duration field.
-
-**Error:** `TimeoutError: locator.evaluate: Timeout 10000ms exceeded.`
-Waiting for locator: `//*[@aria-label="Session Duration (minutes)"]/ancestor::*[contains(@class,"field")]//*[@role="alert"]`
-
-**Files to Check:**
-- `e2e/tests/01_setup_and_auth.robot`
-- `frontend/src/pages/SetupPage.tsx`
-
-**Reference Docs:**
-- `Docs/Features.md` — Session duration validation rules
-
-**Expected Behavior:** Entering an invalid session duration and submitting should display a `[role="alert"]` error in the field container.
-
----
-
-## Task: 01 Setup And Auth — Incomplete Password Shows Complexity Error
-
-**Test:** `Incomplete Password Shows Complexity Error`
-**Suite:** `01_setup_and_auth.robot`
-
-**Step That Fails:** Waiting for validation alert on Master Password field after weak password input.
-
-**Error:** `TimeoutError: locator.evaluate: Timeout 10000ms exceeded.`
-Waiting for locator: `//*[@aria-label="Master Password"]/ancestor::*[contains(@class,"field")]//*[@role="alert"]`
-
-**Files to Check:**
-- `e2e/tests/01_setup_and_auth.robot`
-- `frontend/src/pages/SetupPage.tsx`
-
-**Reference Docs:**
-- `Docs/Features.md` — Password complexity requirements
-
-**Expected Behavior:** Submitting a password that doesn't meet complexity rules should show a `[role="alert"]` error message.
-
----
-
 ## Task: 02 Ban Records — Simulated Failed Logins Appear As Ban Records
 
 **Test:** `Simulated Failed Logins Appear As Ban Records`