kms: revert files accidentally bundled into the docs commit

The previous commit (81a7d804) swept in 23 unrelated working-tree files because
a rebase --autostash had left them staged in the index — including 4 files with
leftover git conflict markers (llama-cpp/main.tf, excalidraw/providers.tf,
url + wealthfolio .terraform.lock.hcl) from a stale 2026-05-25 stash, which is
invalid Terraform. Revert all 23 (terragrunt-generated backend/providers/lock
+ the llama-cpp markers) to their prior committed state; terragrunt regenerates
the generated files on the next run. Net effect of the docs commit is now just
the runbook doc.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

stacks/vault/providers.tf

@@ -20,10 +20,6 @@ terraform {
       source  = "gavinbunney/kubectl"
       version = "~> 1.14"
     }
-    proxmox = {
-      source  = "telmate/proxmox"
-      version = "3.0.2-rc07"
-    }
   }
 }