Module wiki 

Wiki rendering — markdown summary for a single symbol assembled from the graph store. Pure formatter: no I/O beyond the store reads.

Output shape (markdown):

# NAME (KIND)

**Defined in** `file:start-end` · visibility=pub · async=false ...

## Signature
~~~rust
fn example() { ... }
~~~

## Doc
doc comment text

## Callers (N)
- name (kind) — file:line

## Calls (N)
- ...

## Used by (N)
- ...

Functions

render_symbol

Markdown wiki rendering for name on branch. Returns an Err only when the store itself fails; “symbol not found” is surfaced by the upstream symbol_context error.