Add PostgreSQL and Miniflux services to tailnet (#16)

## Summary
- Add PostgreSQL 18 as a new service at `pg.tail8d86e.ts.net:5432`
- Add Miniflux RSS/Atom feed reader at `feed.tail8d86e.ts.net`
- Both services managed via homebrew/brew services
- Pulumi ACL tags added (tag:pg, tag:feed)
- Alloy log collection configured for both services
- Zettelkasten documentation updated

## Manual Setup Required

Before running ansible, the following steps are needed on indri:

### 1. Apply Pulumi tags
```bash
mise run tailnet-up
```
Then apply tags to indri in Tailscale admin console.

### 2. Create 1Password entries
- miniflux PostgreSQL user password
- miniflux admin password (for first run)

### 3. Set PostgreSQL user password (after ansible installs postgres)
```bash
ssh indri '/opt/homebrew/opt/postgresql@18/bin/psql -c "ALTER USER miniflux PASSWORD '\''your-password'\'';"'
```

### 4. Create password files on indri
```bash
ssh indri 'echo "your-db-password" > ~/.miniflux-db-password && chmod 600 ~/.miniflux-db-password'
ssh indri 'echo "your-admin-password" > ~/.miniflux-admin-password && chmod 600 ~/.miniflux-admin-password'
```

### 5. Create ~/.pgpass for borgmatic
```bash
ssh indri 'echo "localhost:5432:miniflux:miniflux:YOUR_PASSWORD" > ~/.pgpass && chmod 600 ~/.pgpass'
```

### 6. Run ansible with first-run admin creation
```bash
mise run provision-indri -- -e miniflux_create_admin=1
```

### 7. Update borgmatic config
Add to `~/.config/borgmatic/config.yaml` on indri:
```yaml
postgresql_databases:
    - name: miniflux
      hostname: localhost
      port: 5432
      username: miniflux
```

### 8. Cleanup after first run
```bash
ssh indri 'rm ~/.miniflux-admin-password'
```

## Test plan
- [ ] Run `mise run tailnet-up` and verify Pulumi changes
- [ ] Apply tags to indri in Tailscale admin
- [ ] Run `mise run provision-indri -- --check --diff` for dry run
- [ ] Run `mise run provision-indri -- -e miniflux_create_admin=1`
- [ ] Approve services in Tailscale admin
- [ ] Verify PostgreSQL: `ssh indri '/opt/homebrew/opt/postgresql@18/bin/pg_isready'`
- [ ] Verify Miniflux: `curl https://feed.tail8d86e.ts.net/healthcheck`
- [ ] Run `mise run indri-services-check`

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Reviewed-on: https://forge.tail8d86e.ts.net/eblume/blumeops/pulls/16

pulumi/__main__.py

@@ -14,5 +14,28 @@ acl = tailscale.Acl(
     acl=policy_content,
 )
 
+# ============== Device Tags ==============
+# Manage tags for devices in the tailnet
+
+# indri - Mac Mini M1 running homelab services
+indri = tailscale.get_device(name="indri.tail8d86e.ts.net")
+indri_tags = tailscale.DeviceTags(
+    "indri-tags",
+    device_id=indri.node_id,
+    tags=[
+        "tag:homelab",
+        "tag:grafana",
+        "tag:forge",
+        "tag:kiwix",
+        "tag:devpi",
+        "tag:loki",
+        "tag:pg",
+        "tag:feed",
+        "tag:blumeops",
+    ],
+)
+
 # Export useful info
 pulumi.export("acl_id", acl.id)
+pulumi.export("indri_device_id", indri.node_id)
+pulumi.export("indri_tags", indri_tags.tags)

pulumi/policy.hujson

@@ -72,25 +72,32 @@
 
 	"tagOwners": {
 		// Grafana service host tag
-		"tag:grafana": ["autogroup:admin"],
+		"tag:grafana": ["autogroup:admin", "tag:blumeops"],
 
 		// This tag applies to instances which are meant to be accessible in my homelab. These instances can be SSH'ed in to by any member of the admin autogroup.
-		"tag:homelab": ["autogroup:admin"],
+		"tag:homelab": ["autogroup:admin", "tag:blumeops"],
 
 		// Kiwix, a local wiki server. I use it to create mirrors of wikipedia.
-		"tag:kiwix": ["autogroup:admin"],
+		"tag:kiwix": ["autogroup:admin", "tag:blumeops"],
 
 		// Service tag for forgejo, scm host and code forge
-		"tag:forge": ["autogroup:admin"],
+		"tag:forge": ["autogroup:admin", "tag:blumeops"],
 
 		// devpi pypi index
-		"tag:devpi": ["autogroup:admin"],
+		"tag:devpi": ["autogroup:admin", "tag:blumeops"],
 
 		// Loki log collection
-		"tag:loki": ["autogroup:admin"],
+		"tag:loki": ["autogroup:admin", "tag:blumeops"],
+
+		// PostgreSQL database server
+		"tag:pg": ["autogroup:admin", "tag:blumeops"],
+
+		// Miniflux RSS/Atom feed reader
+		"tag:feed": ["autogroup:admin", "tag:blumeops"],
 
 		// This tag is applied to resources modified by blumeops-pulumi IaC
-		"tag:blumeops": ["autogroup:admin"],
+		// Includes itself so the OAuth client can apply it to devices
+		"tag:blumeops": ["autogroup:admin", "tag:blumeops"],
 	},
 
 	// Test access rules every time they're saved.