docs(6209): calibration stamp, after-write hook, usage seam, work log, duplicates, skill structure, tuning and rulebook routes, kind surface, prompt filter, moments, strict args, auth, lesson write path

Fourteen more test files: docstrings state the failure each guard defends
as a present-tense shape instead of the incident that found it, and issue,
milestone and rule numbers leave comments and assertion messages.

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

tests/test_routes_retrieval_tuning.py

@@ -1,9 +1,8 @@
-"""The operator's half of the tuning surface (#4102).
+"""The operator's half of the tuning surface.
 
 WHY THIS EXISTS
 
-The model moves these dials — that is the operator's decision for milestone
-416 — so the browser's job is no longer "set the number". It is to show what
+The model moves these dials, so the browser's job is not "set the number". It is to show what
 was set, by whom, and on what argument, and to let the operator disagree.
 
 The load-bearing guard here is the last one. `/api/settings` is a generic
@@ -51,7 +50,7 @@ def test_every_endpoint_is_reachable_on_the_app():
 
 
 def test_the_browser_and_the_agent_call_the_same_service():
-    """Rule 33 parity. Two callers, one service — or the two surfaces drift and
+    """Parity. Two callers, one service — or the two surfaces drift and
     the guard that a reason is required exists on only one of them."""
     from scribe.mcp.tools import retrieval_tuning as tool
     from scribe.routes import retrieval as routes
@@ -138,7 +137,7 @@ async def test_setting_a_dial_to_the_value_it_already_has_records_nothing():
     setter.assert_not_called()
 
 
-# ── the moments view (milestone 458 step 6) ─────────────────────────────
+# ── the moments view ────────────────────────────────────────────────────
 
 async def _moments_call(handler_name, path, method="GET", **kw):
     from types import SimpleNamespace