Code Farm: per-plot auto-replant pause and crop-lock check; community sync and node work

Continuous Delivery could never be turned off once a crop was planted. Add a
one-shot per-plot "stop after harvest" flag (POST /game/plot/stop, Devii tool
game_plot_stop, game_plots.stop_after_harvest), cleared by the next plant,
autoreplant claim or Refactor. Autoreplant now also respects crop locks through
the shared _crop_lock predicate. Plan and measurements in happyplanting.md.

Also includes the pending community sync, node network and related work in the
tree; the full suite passed (4999) with all of it.

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

tests/api/game/mutations.py

@@ -429,3 +429,62 @@ def test_grant_ineligible_when_rich_returns_400(app_server, seeded_db):
     )
     r = session.post(f"{BASE_URL}/game/grant", headers=JSON)
     assert r.status_code == 400
+
+
+def test_plot_stop_requires_auth(app_server, seeded_db):
+    r = requests.post(
+        f"{BASE_URL}/game/plot/stop", data={"slot": 0, "stop": "true"}, headers=JSON
+    )
+    assert r.status_code in (401, 303)
+
+
+def test_plot_stop_without_continuous_delivery_returns_400(app_server, seeded_db):
+    session, name = _signup()
+    _reset_farm(name)
+    session.post(f"{BASE_URL}/game/plant", data={"slot": 0, "crop": "shell"}, headers=JSON)
+    r = session.post(
+        f"{BASE_URL}/game/plot/stop", data={"slot": 0, "stop": "true"}, headers=JSON
+    )
+    assert r.status_code == 400
+
+
+def test_plot_stop_empty_plot_returns_400(app_server, seeded_db):
+    session, name = _signup()
+    _reset_farm(name)
+    _set_farm(name, mastery_autoreplant=1)
+    r = session.post(
+        f"{BASE_URL}/game/plot/stop", data={"slot": 0, "stop": "true"}, headers=JSON
+    )
+    assert r.status_code == 400
+
+
+def test_plot_stop_leaves_plot_empty_after_harvest(app_server, seeded_db):
+    session, name = _signup()
+    _reset_farm(name)
+    _set_farm(name, mastery_autoreplant=1)
+    assert session.post(
+        f"{BASE_URL}/game/plant", data={"slot": 0, "crop": "shell"}, headers=JSON
+    ).status_code == 200
+    r = session.post(
+        f"{BASE_URL}/game/plot/stop", data={"slot": 0, "stop": "true"}, headers=JSON
+    )
+    assert r.status_code == 200, r.text[:200]
+    plot = r.json()["farm"]["plots"][0]
+    assert plot["can_stop_replant"] is True and plot["stop_after_harvest"] is True
+    refresh_snapshot()
+    user = get_table("users").find_one(username=name)
+    farm = store.get_farm(user["uid"])
+    row = get_table("game_plots").find_one(farm_uid=farm["uid"], slot_index=0)
+    past = (datetime.now(timezone.utc) - timedelta(days=1)).isoformat()
+    get_table("game_plots").update({"uid": row["uid"], "ready_at": past}, ["uid"])
+    refresh_snapshot()
+    harvested = session.post(
+        f"{BASE_URL}/game/harvest", data={"slot": 0}, headers=JSON
+    )
+    assert harvested.status_code == 200, harvested.text[:200]
+    assert harvested.json()["farm"]["plots"][0]["state"] == "empty"
+    resumed = session.post(
+        f"{BASE_URL}/game/plant", data={"slot": 0, "crop": "python"}, headers=JSON
+    )
+    assert resumed.status_code == 200
+    assert resumed.json()["farm"]["plots"][0]["stop_after_harvest"] is False