Improve developer experience with sam sync and sam deploy

[mbklein]

Closes #196

[kdid]

I can't remember if you said something about this but the "Running the API locally with state machines + lambdas..." instruction starting on line 76 no longer works. I tried changing the name of the template but just got an error. Not sure if that part needs to come out or just be updated.

[kdid]

When I tried a make sync I got this error (I had run make samconfig.kdid.yaml first):

Failed to create/update the stack: dc-api-kdid, An error     
occurred (ValidationError) when calling the CreateStack      
operation: Parameters: [DevTeamNetIds, SecretsPath,          
PyramidBucket] must have values                              
Failed to sync infra. Code sync is paused until              
template/stack is fixed.              

[kdid]

I'm running through the README instructions.

When I make a file download request after starting with make_step and make state-machine, I'm getting the following. Maybe I'm missing a config? I just pulled tfvars

2025-03-12T15:49:11.079Z	c9e93636-0f87-40d6-8140-ac9770cda440	INFO	[Honeybadger] honeybadger.js is in development mode; the following error report will be sent in production. {
  name: 'TypeError',
  message: "Cannot read properties of undefined (reading 'step_function_endpoint')",
  stack: "TypeError: Cannot read properties of undefined (reading 'step_function_endpoint')\n" +
    '    at processAVDownload (/var/task/handlers/get-file-set-download.js:203:38)\n' +
    '    at /var/task/handlers/get-file-set-download.js:52:20\n' +
    '    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)\n' +
    '    at async Runtime.handler (/var/task/handlers/middleware.js:37:18)',

[mbklein]

Please:

• update the branch (will probably require --force)
• rm env.json
• try the AV Download stuff again