fix(demo): migrate Reactive Resume to SeaweedFS, fix Kiwix/Apple Health

- Replace MinIO + Chrome with SeaweedFS (S3) + bucket init container
- Update Reactive Resume to v5 config (S3_* env vars, APP_URL, AUTH_SECRET)
- Fix Kiwix: smaller ZIM download, graceful fallback on failure, start_period
- Fix Apple Health: use InfluxDB ping() instead of deprecated ready()
- Remove stale RESUME_CHROME_TOKEN and RESUME_REFRESH_TOKEN_SECRET
- Add .yamllint config to relax line-length for compose template
- Update validate-all.sh to use local yamllint config and new image refs
- Update unit tests for createbucket service (replaces chrome)

💘 Generated with Crush

Assisted-by: GLM-5.1 via Crush <crush@charm.land>

demo/.yamllint

@@ -0,0 +1,16 @@
+---
+extends: default
+rules:
+  line-length:
+    max: 160
+    allow-non-breakable-words: true
+  empty-lines:
+    max: 2
+    max-start: 0
+    max-end: 0
+  document-start: disable
+  comments:
+    min-spaces-from-content: 1
+  truthy:
+    allowed-values: ["true", "false"]
+    check-keys: false