Implement complete content injection and enhancement pipeline

- Add content API client with HTTP and mock implementations
- Implement HTML content injection with database content replacement
- Create enhance command for build-time content injection
- Integrate enhancement with servedev for live development workflow
- Add editor asset injection and serving (/_insertr/ endpoints)
- Support on-the-fly HTML enhancement during development
- Enable complete 'Tailwind of CMS' workflow: parse → inject → serve

insertr-cli/pkg/content/mock.go

@@ -0,0 +1,147 @@
+package content
+
+import (
+	"fmt"
+	"time"
+)
+
+// MockClient implements ContentClient with mock data for development
+type MockClient struct {
+	data map[string]ContentItem
+}
+
+// NewMockClient creates a new mock content client with sample data
+func NewMockClient() *MockClient {
+	// Generate realistic mock content based on actual generated IDs
+	data := map[string]ContentItem{
+		// Navigation (index.html has collision suffix)
+		"navbar-logo-2b10ad": {
+			ID:        "navbar-logo-2b10ad",
+			SiteID:    "demo",
+			Value:     "Acme Consulting Solutions",
+			Type:      "text",
+			UpdatedAt: time.Now().Format(time.RFC3339),
+		},
+		"navbar-logo-2b10ad-a44bad": {
+			ID:        "navbar-logo-2b10ad-a44bad",
+			SiteID:    "demo",
+			Value:     "Acme Business Advisors",
+			Type:      "text",
+			UpdatedAt: time.Now().Format(time.RFC3339),
+		},
+
+		// Hero Section - index.html (updated with actual IDs)
+		"hero-title-7cfeea": {
+			ID:        "hero-title-7cfeea",
+			SiteID:    "demo",
+			Value:     "Transform Your Business with Strategic Expertise",
+			Type:      "text",
+			UpdatedAt: time.Now().Format(time.RFC3339),
+		},
+		"hero-lead-e47475": {
+			ID:        "hero-lead-e47475",
+			SiteID:    "demo",
+			Value:     "We help **ambitious businesses** grow through strategic planning, process optimization, and digital transformation. Our team brings 20+ years of experience to accelerate your success.",
+			Type:      "markdown",
+			UpdatedAt: time.Now().Format(time.RFC3339),
+		},
+		"hero-link-76c620": {
+			ID:        "hero-link-76c620",
+			SiteID:    "demo",
+			Value:     "Schedule Free Consultation",
+			Type:      "link",
+			UpdatedAt: time.Now().Format(time.RFC3339),
+		},
+
+		// Hero Section - about.html
+		"hero-title-c70343": {
+			ID:        "hero-title-c70343",
+			SiteID:    "demo",
+			Value:     "About Our Consulting Expertise",
+			Type:      "text",
+			UpdatedAt: time.Now().Format(time.RFC3339),
+		},
+		"hero-lead-673026": {
+			ID:        "hero-lead-673026",
+			SiteID:    "demo",
+			Value:     "We're a team of **experienced consultants** dedicated to helping small businesses thrive in today's competitive marketplace through proven strategies.",
+			Type:      "markdown",
+			UpdatedAt: time.Now().Format(time.RFC3339),
+		},
+
+		// Services Section
+		"services-subtitle-c8927c": {
+			ID:        "services-subtitle-c8927c",
+			SiteID:    "demo",
+			Value:     "Our Story",
+			Type:      "text",
+			UpdatedAt: time.Now().Format(time.RFC3339),
+		},
+		"services-text-0d96da": {
+			ID:        "services-text-0d96da",
+			SiteID:    "demo",
+			Value:     "**Founded in 2020**, Acme Consulting emerged from a simple observation: small businesses needed access to the same high-quality strategic advice that large corporations receive, but in a format that was accessible, affordable, and actionable.",
+			Type:      "markdown",
+			UpdatedAt: time.Now().Format(time.RFC3339),
+		},
+
+		// Default fallback for any missing content
+		"default": {
+			ID:        "default",
+			SiteID:    "demo",
+			Value:     "[Enhanced Content]",
+			Type:      "text",
+			UpdatedAt: time.Now().Format(time.RFC3339),
+		},
+	}
+
+	return &MockClient{data: data}
+}
+
+// GetContent fetches a single content item by ID
+func (m *MockClient) GetContent(siteID, contentID string) (*ContentItem, error) {
+	if item, exists := m.data[contentID]; exists && item.SiteID == siteID {
+		return &item, nil
+	}
+
+	// Return fallback content for missing items during development
+	fallback := &ContentItem{
+		ID:        contentID,
+		SiteID:    siteID,
+		Value:     fmt.Sprintf("[Mock: %s]", contentID),
+		Type:      "text",
+		UpdatedAt: time.Now().Format(time.RFC3339),
+	}
+
+	return fallback, nil
+}
+
+// GetBulkContent fetches multiple content items by IDs
+func (m *MockClient) GetBulkContent(siteID string, contentIDs []string) (map[string]ContentItem, error) {
+	result := make(map[string]ContentItem)
+
+	for _, id := range contentIDs {
+		item, err := m.GetContent(siteID, id)
+		if err != nil {
+			return nil, err
+		}
+		if item != nil {
+			result[id] = *item
+		}
+	}
+
+	return result, nil
+}
+
+// GetAllContent fetches all content for a site
+func (m *MockClient) GetAllContent(siteID string) (map[string]ContentItem, error) {
+	result := make(map[string]ContentItem)
+
+	for _, item := range m.data {
+		if item.SiteID == siteID {
+			result[item.ID] = item
+		}
+	}
+
+	return result, nil
+}