[I] Nouveau ddoc signature returned by `_info` is wrong [couchdb]

[via GitHub]

espy opened a new issue, #5291:
URL: https://github.com/apache/couchdb/issues/5291

   If you `GET` the `_info` of a ddoc that contains just a `nouveau` section 
and one or more indexes, `signature` is always 
`3e823c2a4383ac0c18d4e574135a5b08`. 
   
   ## Description
   
   Any ddoc with just a `nouveau` key always has 
`3e823c2a4383ac0c18d4e574135a5b08` as a `signature`, which is also the same as 
the `signature` for any "empty" ddoc without any indexes, eg.
   
   ```json
   {
     "_id": "_design/test",
     "_rev": "9-1607aa524e868b26cb775a5252a6ced3",
     "language": "javascript"
   }
   ```
   
   So it seems the `nouveau` object in ddocs is invisible to the hashing 
function used for `signature`. 
   Note that proper 64bit hashes _are_ generated per ddoc for the _directories 
on disk_, so the hashing does work somewhere:
   
   ```
   
data/nouveau/{nodeName}/shards/{shardName}/{databaseName}.{someInteger}/{ddocHash}
   ```
   The `{ddocHash}` here looks as expected (for a Nouveau ddoc, which should 
have a 64 bit hash).
   
   ## Steps to Reproduce
   
   1. Look at the `/_info` output of any ddoc that has a `nouveau` section
   
   ## Expected Behaviour
   
   I would expect these to be different from ddoc to ddoc and between changes 
to the same ddoc, like it is for ddocs with a `views` section.
   
   ## Your Environment
   
   ```json
   {
     "couchdb":"Welcome",
     "version":"3.4.1",
     "git_sha":"f504e38a5",
     "uuid":"4e36c505782b7068ead9895902c5f07d",
     "features":[
       "nouveau",
       "access-ready",
       "partitioned",
       "pluggable-storage-engines",
       "reshard",
       "scheduler"
     ],
     "vendor":{"name":"The Apache Software Foundation"}
   }
   ```
   
   * CouchDB version used: 3.4.1 Mac binary
   * Browser name and version: Requests made using Thunder Client for VS Code
   * Operating system and version: Mac OS Sonoma 14.6.1
   


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