Fase B1: chain journal pages with previous/next graph links

Adds :logseq.property.journal/previous and /next (built-in, hidden,
single-cardinality node refs) and maintains them in
logseq.outliner.page/create whenever a new journal page is created.
Filling a gap between two already-linked journals re-links both
neighbors around the new page instead of just appending. A migration
backfills the chain across all existing journal pages ordered by day.

deps/db/src/logseq/db/frontend/property.cljs

@@ -265,11 +265,24 @@
                                                  :public? false
                                                  :hide? true}}
 
+     :logseq.property.citation/target {:title "Cited page or block"
+                                       :schema {:type :node}}
+     :logseq.property.citation/context {:title "Citation context"
+                                        :schema {:type :string}}
+
      ;; Journal props
      :logseq.property.journal/title-format {:title "Title Format"
                                             :schema
                                             {:type :string
                                              :public? false}}
+     :logseq.property.journal/previous {:title "Previous journal"
+                                        :schema {:type :node
+                                                 :hide? true
+                                                 :public? false}}
+     :logseq.property.journal/next {:title "Next journal"
+                                    :schema {:type :node
+                                             :hide? true
+                                             :public? false}}
 
      :logseq.property/choice-checkbox-state {:title "Choice checkbox state"
                                              :schema {:type :checkbox

deps/db/src/logseq/db/frontend/schema.cljs

@@ -30,7 +30,7 @@
          (map (juxt :major :minor)
               [(parse-schema-version x) (parse-schema-version y)])))
 
-(def version (parse-schema-version "65.33"))
+(def version (parse-schema-version "65.36"))
 
 (defn major-version
   "Return a number.