Persist skip_on_away on quest definitions

Add a skip_on_away flag to quest_definitions (migration 8, additive
column defaulting to 1 so existing rows keep today's behaviour). The
admin create/edit routes accept it as an optional boolean (create
defaults true, an omitted edit field keeps the stored value) and the
definition payload returns it. Materialisation generates instances on
absent dates when the flag is false.

Task: ded75ab8-0219-4d52-aefa-82c09e0b5e6b

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

tests/test_api_admin_questdef.py

@@ -215,6 +215,7 @@ async def test_create_persists_definition_with_assignees_and_windows(
         "description",
         "icon",
         "is_active",
+        "skip_on_away",
         "rule",
         "assignees",
         "windows",
@@ -223,6 +224,7 @@ async def test_create_persists_definition_with_assignees_and_windows(
     assert payload["description"] == "Put everything back where it belongs."
     assert payload["icon"] == "toy-box"
     assert payload["is_active"] is True
+    assert payload["skip_on_away"] is True
     assert payload["rule"] == _weekly_rule_dict()
     assert {a["id"]: a["display_name"] for a in payload["assignees"]} == {
         ada: "Ada",
@@ -524,6 +526,58 @@ async def test_edit_rejections_are_422_and_change_nothing(
 # --- set_active -------------------------------------------------------------
 
 
+async def test_edit_toggles_skip_on_away_and_omission_keeps_it(
+    admin_questdefs: SimpleNamespace,
+) -> None:
+    """A supplied skip_on_away persists; an edit omitting it keeps it."""
+    client = admin_questdefs.client
+    dao = _dao_rules.QuestDefinitionsDao(admin_questdefs.database)
+    ada = (await _create_children(client, ("Ada",)))[0]
+    created = await _create_definition(client, [ada])
+    assert created.status_code == 201
+    definition_id = created.json()["id"]
+    assert created.json()["skip_on_away"] is True
+
+    toggled_off = await client.patch(
+        f"/api/v1/admin/quest-definitions/{definition_id}",
+        json={"skip_on_away": False},
+        headers=_admin_headers(),
+    )
+    assert toggled_off.status_code == 200
+    assert toggled_off.json()["skip_on_away"] is False
+    assert (await dao.get(definition_id)).skip_on_away is False
+
+    # An edit that omits the flag leaves the stored False untouched.
+    renamed = await client.patch(
+        f"/api/v1/admin/quest-definitions/{definition_id}",
+        json={"title": "Tidy the den properly"},
+        headers=_admin_headers(),
+    )
+    assert renamed.status_code == 200
+    assert renamed.json()["skip_on_away"] is False
+    stored = await dao.get(definition_id)
+    assert stored.title == "Tidy the den properly"
+    assert stored.skip_on_away is False
+
+    toggled_on = await client.patch(
+        f"/api/v1/admin/quest-definitions/{definition_id}",
+        json={"skip_on_away": True},
+        headers=_admin_headers(),
+    )
+    assert toggled_on.status_code == 200
+    assert toggled_on.json()["skip_on_away"] is True
+    assert (await dao.get(definition_id)).skip_on_away is True
+
+    # A non-boolean value is a malformed body: 422, nothing changes.
+    rejected = await client.patch(
+        f"/api/v1/admin/quest-definitions/{definition_id}",
+        json={"skip_on_away": "sometimes"},
+        headers=_admin_headers(),
+    )
+    assert rejected.status_code == 422
+    assert (await dao.get(definition_id)).skip_on_away is True
+
+
 async def test_set_active_toggles_the_flag_and_the_definition_survives(
     admin_questdefs: SimpleNamespace,
 ) -> None: