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/terragrunt.hcl

@@ -0,0 +1,8 @@
+include "root" {
+  path = find_in_parent_folders()
+}
+
+dependency "platform" {
+  config_path  = "../platform"
+  skip_outputs = true
+}