Add DNS Setup Reminder in Provision Command

[josecelano]

Overview

Add a reminder message in the provision command output to inform users they need to configure DNS to point their domains to the newly assigned server IP.

Specification

See detailed specification: docs/issues/332-dns-setup-reminder-in-provision-command.md

🏗️ Architecture Requirements

DDD Layers: Application + Presentation
Module Paths:

• src/application/command_handlers/show/info/tracker.rs - Reuse domain extraction
• src/presentation/controllers/provision/handler.rs - Controller orchestration
• src/presentation/views/commands/provision/dns_reminder.rs - New view component

Pattern: MVC (Model-View-Controller) with DDD layering

Module Structure Requirements

• Follow DDD layer separation (see docs/codebase-architecture.md)
• Respect dependency flow rules (presentation depends on application)
• Use appropriate module organization (see docs/contributing/module-organization.md)
• Follow MVC pattern: Controller orchestrates, View renders

Architectural Constraints

• No business logic in presentation layer - domain extraction stays in application layer
• Error handling follows project conventions (see docs/contributing/error-handling.md)
• Output handling follows project conventions (see docs/contributing/output-handling.md) - use UserOutput methods

Anti-Patterns to Avoid

• ❌ Duplicating domain extraction logic - reuse ServiceInfo
• ❌ Mixing concerns across layers
• ❌ Direct stdout/stderr access - always use UserOutput

Implementation Plan

Phase 1: Create DNS Reminder View

• Create src/presentation/views/commands/provision/dns_reminder.rs
• Add DnsReminderView struct with render() method
• Extract all domains from ServiceInfo (HTTP trackers, API, health check, Grafana)
• Format output with warning icon and domain list
• Add unit tests for the view

Phase 2: Integrate into Provision Controller

• Update src/presentation/controllers/provision/handler.rs
• After displaying connection details, extract domain information
• Use ServiceInfo::from_tracker_config() to get domains
• Call DnsReminderView::render() if domains are present
• Display using UserOutput methods

Phase 3: Update Show Command (Optional Enhancement)

• Update show command to display DNS info for ALL domains (not just TLS)
• Remove TLS-only restriction from HttpsHintView
• Reuse DNS reminder view logic

Acceptance Criteria

Note for Contributors: These criteria define what the PR reviewer will check. Use this as your pre-review checklist before submitting the PR to minimize back-and-forth iterations.

Quality Checks:

• Pre-commit checks pass: ./scripts/pre-commit.sh
• All unit tests pass for new view
• E2E tests pass (no regressions)

Task-Specific Criteria:

• DNS reminder appears after provision command when domains are configured
• DNS reminder lists ALL configured domains (HTTP trackers, API, health check, Grafana)
• DNS reminder does NOT appear when no domains are configured
• Output format includes warning icon, clear message, domain list
• View follows MVC pattern
• Uses UserOutput methods (no direct println!)

Related

• Roadmap: Roadmap #1 (Section 10.1 - Improve usability)
• Specification: docs/issues/332-dns-setup-reminder-in-provision-command.md