feat(500): reply shapes are delivered - the core every turn through the ledger, each slice at its moment, reply mounts before the reply (#5495)

- Every turn (/api/plugin/retrieve, UserPromptSubmit): the core reply shape
  leads the payload - in full the first time, as its one-line reminder
  after that - followed by whatever is mounted on reply.report, under the
  shared rule ledger. Fresh keys come back as shape_keys.
- The ledger is <sid>.shapes.ids in scribe-priorart (scribe_shapes_file /
  _seen / _append), so the compaction sweep that clears every .ids ledger
  is what brings the full core back after one.
- At a moment (/api/plugin/moment): the slice for that reply - completion
  on work.finish, asks on reply.ask, plan on work.plan - ahead of the
  mounted rules. reachable_tools now lists tools reaching a shaped moment
  even on an install with nothing mounted.
- Scribe's own tools (attach_moment_rules): reply_shape in the response,
  in full, since that door has no ledger. enter_project carries the core
  for clients with no prompt hook.
- Telemetry: one AppLog row per delivery (plugin / reply_shape), each
  shape with full or pointer and the door (turn, hook, mcp).

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

tests/conftest.py

@@ -102,6 +102,20 @@ def _no_supersession():
         yield
 
 
+@pytest.fixture(autouse=True)
+def _no_reply_shape_log():
+    """Stub the reply-shape delivery row (milestone 500 step 3).
+
+    Autouse for _no_system_labels' reason: every turn's retrieval, every
+    moment request and every Scribe tool that reaches a shaped moment writes
+    one AppLog row, and those paths are tested without a database.
+    tests/test_reply_shapes.py binds the real function at import time,
+    before this patch runs.
+    """
+    with patch("scribe.services.reply_shapes.record_delivery", AsyncMock()):
+        yield
+
+
 @pytest.fixture(autouse=True)
 def _no_system_labels():
     """Stub the menu's "which System is each line about?" lookup (#4364).