Fix deployment tooling: shell scripts and Terraform

Terraform (validated with the real terraform CLI - was never actually
run against this cluster, no state file existed):
- Delete main.tf: it declared a duplicate kubernetes_namespace.core
  (also in namespaces.tf) and a duplicate provider "kubernetes" block
  (also in providers.tf), both hard errors that would fail
  `terraform plan` immediately.
- Fix workloads.tf references to 6 files deleted in the manifest
  cleanup (jupiter-sts/svc, atlantis-sts/svc, fiesta-sts/svc) - now
  points at the canonical nearle-jupiter/atlantis/fiesta.yaml.
- Fix every kubernetes_manifest resource: they fed multi-document
  YAML (multiple '---'-separated docs per file) straight into
  yamldecode(), which only parses a single document. Rewrote using a
  split-on-'---' + for_each pattern, confirmed safe first by checking
  separator counts exactly match document counts for every affected
  file (no embedded '---' inside any script/config content).
- Add the doormile namespace; rename kubernetes_namespace to
  kubernetes_namespace_v1 (fixes a deprecation warning).
- `terraform validate` now passes clean.

Shell scripts:
- deploy-nearle-stack.sh only applied 4 of the ~13 files in
  manifests/nearle/ - missing the ConfigMap/Secrets fiesta/jupiter/
  titan/ariane need via envFrom, the fiesta gateway script ConfigMap,
  atlantis entirely, and the Gateway/ReferenceGrant/jupiter-cors-proxy
  resources. Now applies every file (verified by diffing the
  directory listing against the script).
- Added deploy-doormile.sh and deploy-ingress.sh - nothing previously
  applied ingress-unified.yaml or traefik-middlewares.yaml at all.
- Rewrote deploy.sh as an orchestrator calling all of the above in
  order (previously referenced a manifests/namespace.yaml layout that
  hasn't existed since before this repo's initial commit).
- Rewrote check-k8s-status.sh to check the real namespaces
  (core/nearle/alaska/doormile/kubernetes-dashboard) instead of a
  'nats-backend' namespace that never existed in this repo.
- Fixed a `cd` bug in setup-jetstream.sh that made it change into
  shfiles/ and then look for scripts/setup_jetstream.py there (a
  child directory that doesn't exist) - it could never have found its
  own target file. Now pulls NATS credentials from the live
  nats-credentials Secret instead of a third hardcoded copy.

Python scripts:
- sync_manifests.py had hardcoded Windows paths (e:\nats\kubernetes\...)
  - replaced with paths relative to the script's own location so it
  actually runs here (or anywhere). Verified by running it.
- setup_jetstream.py created durable consumers under different names
  than worker.py computes at runtime ({NATS_CONSUMER}_{subject}), so
  its max_deliver/ack_wait settings never actually reached the
  consumers workers bind to. Naming now derived with the same logic
  worker.py uses - verified all 10 derived names match workers.yaml
  exactly.
- purge-old-messages.py had hardcoded NATS credentials with no env
  var override at all - fixed to match the pattern used everywhere
  else.

scripts/sync_manifests.py

@@ -51,16 +51,18 @@ def update_yaml_with_script(yaml_path, script_path, key_line_start):
         
     print(f"Successfully updated {yaml_path}")
 
+REPO_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
 # Update Fiesta Gateway
 update_yaml_with_script(
-    r'e:\nats\kubernetes\manifests\nearle\fiesta-gateway.yaml',
-    r'e:\nats\kubernetes\conf\app.py',
+    os.path.join(REPO_ROOT, 'manifests', 'nearle', 'fiesta-gateway.yaml'),
+    os.path.join(REPO_ROOT, 'conf', 'app.py'),
     '  app.py: |'
 )
 
 # Update Worker Script
 update_yaml_with_script(
-    r'e:\nats\kubernetes\manifests\core\worker-script.yaml',
-    r'e:\nats\kubernetes\conf\worker.py',
+    os.path.join(REPO_ROOT, 'manifests', 'core', 'worker-script.yaml'),
+    os.path.join(REPO_ROOT, 'conf', 'worker.py'),
     '  worker.py: |'
 )