feat(claude-memory): add stack and update image to standalone repo

- Add claude-memory stack (was previously untracked)
- Update Docker image from viktorbarzin/claude-memory to
  viktorbarzin/claude-memory-mcp (standalone open-source repo)
- CI/CD now lives in the standalone repo's .woodpecker.yml

stacks/claude-memory/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"
+  }
+}