feat(properties): tree-aware readers for expenses, maintenance, checklists

Phase 2. Each service grows a `*ForProperties` (plural) variant that
takes a resolved property id array; the existing single-property
functions now delegate to them with `[propertyId]`. The route layer
will compute the descendant set via getDescendantIds when the user
toggles "include sub-properties" — this commit only adds the readers
behind the scenes.

Also extends the checklist_scope enum with 'property' so checklists
can attach directly to a property and the rollup query has a
well-typed scope to filter on.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

drizzle/meta/_journal.json

@@ -127,6 +127,13 @@
       "when": 1777268853484,
       "tag": "0017_property_parent_check",
       "breakpoints": true
+    },
+    {
+      "idx": 18,
+      "version": "7",
+      "when": 1777268985448,
+      "tag": "0018_checklist_scope_property",
+      "breakpoints": true
     }
   ]
 }