Phase 1: Control Service skeleton (Go, SQLite, session login, Docker, Caddy)

- Go service with its own multi-stage Dockerfile and docker-compose.yml; runs
  as container webrestrict-control on port 8791.
- SQLite schema for the full AGENTS.md §7 data model via versioned migrations
  (PRAGMA user_version); audit log is append-only.
- Configuration from the process environment; the real env file is gitignored
  and a template is committed. No secrets in the repo.
- Separate session login (signed HMAC cookie + CSRF) for Sam.
- GET /health; HTMX + server-rendered dashboard styled with the Family Home Lab
  tokens.css (copied) and Inter fonts; dark mode; phone-friendly.
- Caddy vhost for webrestrict.lab.audasmedia.com.au applied on .35 (Let's
  Encrypt cert issued); route recorded in deploy/caddy/webrestrict.caddy.
- Unit tests for config, auth and store.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

go.mod

@@ -0,0 +1,20 @@
+module gitea.lab.audasmedia.com.au/sam/internet_use_control
+
+go 1.25
+
+require (
+	golang.org/x/crypto v0.31.0
+	modernc.org/sqlite v1.34.5
+)
+
+require (
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/ncruces/go-strftime v0.1.9 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+	golang.org/x/sys v0.28.0 // indirect
+	modernc.org/libc v1.55.3 // indirect
+	modernc.org/mathutil v1.6.0 // indirect
+	modernc.org/memory v1.8.0 // indirect
+)