Function renderLoadedGraph

renderLoadedGraph(
    cache: Cache,
    cmd: RenderCommand,
    cacheLabel: string,
    log: Logger,
): Promise<number>
Render an already-in-memory Cache to the configured output. This is the shared rendering core: runRender loads a cache from disk and calls it, and the cache-free all/auto one-shot path (scanRenderInMemory) scans straight into a Cache and calls it without any disk involved.

Output destination (identical to the old runRender behavior):
- --out set → bytes written there.
- --out omitted, textual format (json/dot/svg/html) → written to stdout via log.
- --out omitted, binary format (png/jpeg) → a default filename is generated via defaultBinaryOutPath and the bytes are written there.
Parameters
- cache: Cache
  the graph source: a disk-loaded or freshly-scanned cache
- cmd: RenderCommand
  the render options (format, scope, filters, layout, out, repos)
- cacheLabel: string
  a human label for the cache source, recorded into the graph metadata and used in the HTML title — the cache path for disk renders, the joined repo list for in-memory renders
- log: Logger
  the stdout/stderr sink
Returns Promise<number>
the process exit code (0 on success, 1 on a render error)
Example
```
await renderLoadedGraph(cache, cmd, 'owner/repo', console.log)  // => 0
```
See
- runRender
- scanRenderInMemory
- Defined in cli/issue-tree.ts:969