fix: editor usability and visual polish from UI scan

- Rule name is now an inline text field at the top of the editor; the
  pencil/rename button and alert are gone (it was unclear what the edit
  button did). Names are sanitized on commit: trimmed, falling back to
  the kind's default when emptied
- Day-of-week toggles fill the full row width with equal cells and
  >= 44pt tap targets
- 'Add Rule' commit button sits on a bar-material bottom inset so form
  content no longer collides with it while scrolling (found via
  computer-use scan; verified clean in a follow-up scan)
- Tests: 95 passing — new specs for the inline rename flow, day-toggle
  geometry, and name sanitization; three tests now scroll to reach
  bottom-of-form controls, matching real user behavior
- Spec §6 updated for the editor changes

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

SeveredUITests/RuleCreationUITests.swift

@@ -44,19 +44,38 @@ final class RuleCreationUITests: XCTestCase {
         app.buttons["newRuleButton"].waitToAppear().tap()
         app.buttons["ruleKind-schedule"].waitToAppear().tap()
 
-        app.buttons["renameButton"].waitToAppear().tap()
-        let nameField = app.textFields.firstMatch.waitToAppear()
-        nameField.tap()
-        // Clear the prefilled name, then type the new one.
+        // The rule name is an inline text field at the top of the editor —
+        // no separate edit/rename button.
+        XCTAssertFalse(app.buttons["renameButton"].exists)
+        let nameField = app.textFields["ruleNameField"].waitToAppear()
+        // Tap at the trailing edge so the cursor lands after the last character.
+        nameField.coordinate(withNormalizedOffset: CGVector(dx: 0.95, dy: 0.5)).tap()
         let deletions = String(repeating: XCUIKeyboardKey.delete.rawValue, count: 24)
-        nameField.typeText(deletions + "My Focus")
-        app.buttons["OK"].tap()
+        nameField.typeText(deletions + "My Focus\n")
 
         XCTAssertEqual(app.staticTexts["ruleEditorTitle"].label, "My Focus")
         app.buttons["commitRuleButton"].waitToAppear().tap()
         app.buttons["ruleCard-My Focus"].waitToAppear()
     }
 
+    func testDayTogglesFillRowAndHaveLargeTapTargets() throws {
+        let app = XCUIApplication.launchSevered()
+        app.buttons["newRuleButton"].waitToAppear().tap()
+        app.buttons["ruleKind-schedule"].waitToAppear().tap()
+
+        let first = app.buttons["dayToggle-1"].waitToAppear()
+        let last = app.buttons["dayToggle-7"].waitToAppear()
+        let span = last.frame.maxX - first.frame.minX
+        XCTAssertGreaterThan(
+            span, app.frame.width * 0.75,
+            "Day toggles should span the full row width, got \(span) of \(app.frame.width)"
+        )
+        XCTAssertGreaterThanOrEqual(
+            first.frame.height, 44,
+            "Day toggle tap target should be at least 44pt tall"
+        )
+    }
+
     func testDayTogglesUpdateSummary() throws {
         let app = XCUIApplication.launchSevered()
         app.buttons["newRuleButton"].waitToAppear().tap()
@@ -90,6 +109,10 @@ final class RuleCreationUITests: XCTestCase {
         app.buttons["newRuleButton"].waitToAppear().tap()
         app.buttons["ruleKind-schedule"].waitToAppear().tap()
 
+        // The toggle lives at the bottom of the form; scroll it clear of the
+        // commit bar before tapping.
+        app.staticTexts["ruleEditorTitle"].waitToAppear()
+        app.swipeUp()
         app.switches["adultContentToggle"].waitToAppear().tap()
         app.buttons["commitRuleButton"].waitToAppear().tap()