wip(394): steps 6+7 — backend path and instruction surfaces

src/scribe/mcp/tools/search.py

@@ -40,7 +40,6 @@ async def _search_rules(uid: int, q: str, limit: int) -> dict:
                 "title": rule.title,
                 "statement": rule.statement,
                 "when_to_apply": rule.when_to_apply or "",
-                "tier": rule.tier,
                 "why": rule.why or "",
                 "how_to_apply": rule.how_to_apply or "",
                 "verify_with": rule.verify_with or "",
@@ -282,7 +281,7 @@ It is an UPPER BOUND per surface: a pull records the door it came
     `surfaced` VS `ambient` IS THE READING THAT MATTERS HERE. `surfaced` counts
     rules a ranker chose — today only the write-path arm — and those are claims
     a pull can settle. `ambient` counts BULK DELIVERIES: the SessionStart
-    preload, `list_always_on_rules`, and the `rules_payload` surfaces
+    preload and the `rules_payload` surfaces
     (`enter_project`, `get_project`, `get_milestone`, `start_planning`,
     `get_task`), which hand over the whole applicable set at once with nobody
     choosing anything. A large `ambient` says the resident set is big and