Rules can leave a manual pick alone, Clock is an editable page, fix HA attributes

- Rules: "also over a page chosen by hand" (on by default); off, a rule
  waits until the manual pick ends. Schedule store version 3, version 2
  records are read with the option on.
- The Clock page is stored at boot from the built-in one and can be
  edited; Reset (deleting it) brings back the original.
- Home Assistant attributes were never found: ArduinoJson 7.4 takes a
  char array key as a literal of its full array length.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/esp32/logic/page_selector.cpp

@@ -106,7 +106,7 @@ PageChoice PageSelector::update(int minute, uint32_t now)
 			_rule_timer[i] = false;
 		bool takes_over = ((r.mode == TriggerMode::WhileTrue && _rule_active[i]) ||
 						   (r.mode == TriggerMode::ForSeconds && _rule_timer[i])) &&
-						  ruleInBlock(r, _block);
+						  ruleInBlock(r, _block) && (r.over_manual || !_picked);
 		if (takes_over)
 		{
 			choice.page = r.page;
@@ -138,7 +138,8 @@ PageChoice PageSelector::update(int minute, uint32_t now)
 		for (int i = 0; i < rule_count; i++)
 		{
 			const TriggerRule &r = _schedule->rules[i];
-			if (r.mode == TriggerMode::AddToRotation && _rule_active[i] && ruleInBlock(r, _block))
+			if (r.mode == TriggerMode::AddToRotation && _rule_active[i] && ruleInBlock(r, _block) &&
+				(r.over_manual || !_picked))
 				items[count++] = {r.page, r.seconds * 1000UL, ShowReason::Rotation, i};
 		}