Tb Right Entry Stack
A two-line bundle into a stacked TB section's RIGHT entry from a same-row left source: it loops over the section top and descends into the port, the U-turn transposing the bundle, with concentric corners built via `build_concentric_bundle` (#707).
Mermaid source
%%metro title: TB Right-Entry Stack%%metro style: dark%%metro line: alpha | Alpha | #e63946%%metro line: beta | Beta | #0570b0%%metro grid: source | 0,0%%metro grid: upper | 1,0%%metro grid: lower | 1,1
graph LR subgraph source [Source] s1[Prepare A] s2[Prepare B] s1 -->|alpha| s2 end
subgraph upper [Upper] %%metro direction: TB %%metro entry: right | alpha, beta u1[Align] u2[Sort] u1 -->|alpha,beta| u2 end
subgraph lower [Lower] %%metro direction: TB %%metro entry: top | alpha, beta l1[Merge] l2[Report] l1 -->|alpha,beta| l2 end
s2 -->|alpha,beta| u1 u2 -->|alpha,beta| l1CLI command
nf-metro render examples/topologies/tb_right_entry_stack.mmd -o tb_right_entry_stack.svg