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/unit/services/nodes/circuit.py

@@ -95,3 +95,57 @@ def test_a_zero_threshold_still_needs_one_failure():
     assert breaker.allows("x")
     breaker.failure("x")
     assert not breaker.allows("x")
+
+
+def test_snapshot_lists_open_circuits_with_time_left():
+    breaker, clock = make(failures=2, open_seconds=60)
+    breaker.failure(("destination", "reddit.com"))
+    breaker.failure(("destination", "reddit.com"))
+    clock.now = 20
+    rows = breaker.snapshot()
+    assert rows[0]["key"] == "destination:reddit.com" and rows[0]["state"] == "open"
+    assert 39 <= rows[0]["seconds_left"] <= 40 and rows[0]["failures"] == 2
+
+
+def test_dirty_flag_follows_every_change():
+    breaker, _ = make(failures=2)
+    assert not breaker.dirty
+    breaker.failure("x")
+    assert breaker.dirty
+    breaker.dirty = False
+    breaker.success("x")
+    assert breaker.dirty
+    breaker.dirty = False
+    breaker.success("never-seen")
+    assert not breaker.dirty
+
+
+def test_a_restart_keeps_an_open_circuit_open_until_its_time_is_up():
+    wall = {"now": 1_000_000.0}
+    clock = Clock()
+    first = CircuitBreaker(2, 60, clock, wall=lambda: wall["now"])
+    first.failure(("destination", "reddit.com"))
+    first.failure(("destination", "reddit.com"))
+    clock.now = 10
+    wall["now"] += 10
+    saved = first.snapshot()
+    second_clock = Clock()
+    second_clock.now = 5000
+    second = CircuitBreaker(2, 60, second_clock, wall=lambda: wall["now"] + 5)
+    assert second.restore(saved) == 1
+    assert second.state(("destination", "reddit.com")) == OPEN
+    second_clock.now += 60
+    assert second.state(("destination", "reddit.com")) == HALF_OPEN
+
+
+def test_restore_ignores_closed_ancient_and_malformed_rows():
+    wall = {"now": 1_000_000.0}
+    breaker = CircuitBreaker(3, 60, Clock(), wall=lambda: wall["now"])
+    rows = [
+        {"key": "destination:a", "failures": 1, "opened_at": wall["now"]},
+        {"key": "destination:b", "failures": 3, "opened_at": wall["now"] - 10_000},
+        {"key": "nocolon", "failures": 9, "opened_at": wall["now"]},
+        {"key": "destination:c", "failures": 9, "opened_at": 0},
+    ]
+    assert breaker.restore(rows) == 0
+    assert breaker.open_count() == 0