chore: add untracked stacks, scripts, and agent configs

- New stacks: beads-server, hermes-agent
- Terragrunt tiers.tf for infra, phpipam, status-page
- Secrets symlinks for vault, phpipam, hermes-agent
- Scripts: cluster_manager, image_pull, containerd pullthrough setup
- Frigate config, audiblez-web app source, n8n workflows dir
- Claude agent: service-upgrade, reference: upgrade-config.json
- Removed: claudeception skill, excalidraw empty submodule, temp listings

[ci skip]

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

stacks/phpipam/secrets

@@ -0,0 +1 @@
+../../secrets

stacks/phpipam/tiers.tf

@@ -0,0 +1,10 @@
+# Generated by Terragrunt. Sig: nIlQXj57tbuaRZEa
+locals {
+  tiers = {
+    core    = "0-core"
+    cluster = "1-cluster"
+    gpu     = "2-gpu"
+    edge    = "3-edge"
+    aux     = "4-aux"
+  }
+}