feat: complete Phase 5 multi-app platform with resource limits

Add Docker resource limits to all platform services in bootstrap script
(postgres: 1G/1CPU, redis: 256M/0.25CPU, minio: 512M/0.5CPU, caddy:
256M/0.25CPU). Mark Phase 5 complete in roadmap with 3 apps running.
Credential isolation deferred to Phase 5.5.

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

Author: baijum

infrastructure/bootstrap-server.sh

@@ -189,6 +189,14 @@ services:
       interval: 10s
       timeout: 5s
       retries: 5
+    deploy:
+      resources:
+        limits:
+          cpus: '1.00'
+          memory: 1G
+        reservations:
+          cpus: '0.50'
+          memory: 512M
 
   redis:
     image: redis:7
@@ -202,6 +210,14 @@ services:
       interval: 10s
       timeout: 5s
       retries: 5
+    deploy:
+      resources:
+        limits:
+          cpus: '0.25'
+          memory: 256M
+        reservations:
+          cpus: '0.10'
+          memory: 128M
 
   minio:
     image: minio/minio
@@ -220,6 +236,14 @@ services:
       interval: 10s
       timeout: 5s
       retries: 5
+    deploy:
+      resources:
+        limits:
+          cpus: '0.50'
+          memory: 512M
+        reservations:
+          cpus: '0.25'
+          memory: 256M
 
   caddy:
     image: caddy:2
@@ -243,6 +267,14 @@ services:
       interval: 10s
       timeout: 5s
       retries: 5
+    deploy:
+      resources:
+        limits:
+          cpus: '0.25'
+          memory: 256M
+        reservations:
+          cpus: '0.10'
+          memory: 128M
 
 networks:
   towlion: