feat(demo): migrate 5 SelfStack services to demo stack (16→24 services)

Add Reactive Resume, Metrics, Kiwix, Resume Matcher, and Apple Health
from the earlier SelfStack project. Rewrite Apple Health collector to
use InfluxDB v2 with proper error handling. Update all tests, scripts,
Homepage config, env template, and documentation for the expanded stack.

New services:
- Reactive Resume (4016) + Postgres/Minio/Chrome companions
- Metrics (4021) - GitHub metrics visualization
- Kiwix (4022) - offline wiki reader
- Resume Matcher (4023) - AI resume screening
- Apple Health (4024) - health data collector → InfluxDB v2

Also adds git policy to AGENTS.md: always commit and push automatically.

💘 Generated with Crush

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

demo/demo.env.template

@@ -27,6 +27,12 @@ WAKAPI_PORT=4015
 MAILHOG_PORT=4017
 MAILHOG_SMTP_PORT=4019
 ATUIN_PORT=4018
+REACTIVE_RESUME_PORT=4016
+RESUME_MINIO_PORT=4020
+METRICS_PORT=4021
+KIWIX_PORT=4022
+RESUME_MATCHER_PORT=4023
+APPLEHEALTH_PORT=4024
 
 # Network Configuration
 NETWORK_SUBNET=192.168.3.0/24
@@ -84,3 +90,19 @@ WAKAPI_PASSWORD_SALT=demo_salt_replace_in_production
 # Atuin Configuration
 ATUIN_HOST=0.0.0.0
 ATUIN_OPEN_REGISTRATION=true
+
+# Reactive Resume Configuration
+RESUME_POSTGRES_DB=reactiveresume
+RESUME_POSTGRES_USER=postgres
+RESUME_POSTGRES_PASSWORD=demo_password
+RESUME_MINIO_USER=minioadmin
+RESUME_MINIO_PASSWORD=minioadmin
+RESUME_CHROME_TOKEN=chrome_token_demo
+RESUME_ACCESS_TOKEN_SECRET=access_token_secret_demo
+RESUME_REFRESH_TOKEN_SECRET=refresh_token_secret_demo
+
+# Metrics Configuration
+METRICS_GITHUB_TOKEN=GITHUB_API_TOKEN_PLACEHOLDER
+
+# Apple Health Configuration
+APPLEHEALTH_INFLUXDB_BUCKET=demo_metrics