audit: read-only droplet-drift checker (issue #38)#40
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Compares md5 of every file the ansible roles install against the live droplet over a single ssh round-trip. TEMPLATE rows (those rendered from .j2 with inventory vars) are reported with stat info but not auto-diffed. Run after any PR that touches deploy/ansible/ to surface what needs to be pushed manually until we resolve the broader ansible ownership question (issue #38).
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Summary
Stopgap tool for issue #38: a read-only script that compares every file the ansible roles claim to manage against what's actually on shithub-prod, in a single ssh round-trip. Reports OK / DRIFT / MISSING / TEMPLATE per path.
`copy:` files (no templating) are diffed by md5. `template:` files are listed with stat info — comparing rendered output requires inventory vars we don't have locally.
What it caught (and we already fixed in this pass)
Three drifted files. PR #21's path fix and PR #15's aide exclusions had landed in the repo but never reached the droplet:
All five files now match between repo and droplet.
How to use
```sh
deploy/audit/check-droplet-drift.sh
Exit 0: no drift on copy: files
Exit 1: drift detected (eyeball template rows manually)
Exit 2: ssh failure
```
Followup
This script is a stopgap; it does not solve issue #38. The decision between "make ansible authoritative" vs "drop ansible" is still pending.
After every PR that touches `deploy/ansible/`, run this and fix any drift before closing the loop. Eventually a `make audit` target or CI check should run it, but that requires CI to have an ssh key to prod which is its own decision.