- replace globalTree startup loading with globalTopologyGraph
- add topologyGraph adjacency cache with in/out edges, start nodes, and end nodes
- remove multiBranchTreeNode and legacy tree-building helpers
- make topology queries independent of the all-zero UUID virtual root
- keep TOPOLOGY_ANALYSIS on per-task DB querying while clarifying point-to-point reachability results
- add coverage for multi-parent topology reachability
1.refactor topologic storage struct by multi branch tree
2.add new func of build multi branch tree
3.modify sql of query topologic from db
4.delete page id field from topologic struct
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