feat: Sprint 2 — snippets + keychain CRUD, standalone templates, clipboard/utils JS

app/backend/internal/model/snippet.go

@@ -0,0 +1,61 @@
+package model
+
+import "time"
+
+type Snippet struct {
+	ID        string   `json:"id"`
+	Name      string   `json:"name"`
+	Content   string   `json:"content"`
+	Language  string   `json:"language"`
+	Tags      []string `json:"tags"`
+	CreatedAt string   `json:"createdAt"`
+}
+
+type SnippetStore struct {
+	Snippets []Snippet
+}
+
+func NewSnippetStore() *SnippetStore {
+	return &SnippetStore{Snippets: defaultSnippets()}
+}
+
+func (s *SnippetStore) All() []Snippet       { return s.Snippets }
+func (s *SnippetStore) Search(q string) []Snippet {
+	if q == "" { return s.Snippets }
+	var res []Snippet
+	for _, sn := range s.Snippets {
+		if contains(sn.Name, q) || contains(sn.Content, q) || contains(sn.Language, q) {
+			res = append(res, sn)
+		}
+	}
+	return res
+}
+
+func (s *SnippetStore) Add(name, content, language string, tags []string) Snippet {
+	sn := Snippet{
+		ID:        randString(8),
+		Name:      name,
+		Content:   content,
+		Language:  language,
+		Tags:      tags,
+		CreatedAt: time.Now().Format("Jan 2, 2006"),
+	}
+	s.Snippets = append(s.Snippets, sn)
+	return sn
+}
+
+func (s *SnippetStore) Delete(id string) {
+	for i, sn := range s.Snippets {
+		if sn.ID == id { s.Snippets = append(s.Snippets[:i], s.Snippets[i+1:]...); return }
+	}
+}
+
+func defaultSnippets() []Snippet {
+	return []Snippet{
+		{ID: "s1", Name: "Nginx Reverse Proxy", Content: "server {\n  listen 80;\n  server_name example.com;\n  location / {\n    proxy_pass http://localhost:3000;\n    proxy_set_header Host $host;\n  }\n}", Language: "nginx", Tags: []string{"nginx", "proxy", "web"}, CreatedAt: "Jun 28, 2026"},
+		{ID: "s2", Name: "Docker Compose Postgres", Content: "version: '3.8'\nservices:\n  db:\n    image: postgres:16\n    environment:\n      POSTGRES_DB: app\n      POSTGRES_PASSWORD: ${DB_PASS}\n    ports:\n      - 5432:5432", Language: "yaml", Tags: []string{"docker", "postgres", "db"}, CreatedAt: "Jun 25, 2026"},
+		{ID: "s3", Name: "Health Check Script", Content: "#!/bin/bash\ncurl -sf http://localhost/health || exit 1\necho \"OK\"", Language: "bash", Tags: []string{"monitoring", "bash"}, CreatedAt: "Jun 20, 2026"},
+		{ID: "s4", Name: "System Info", Content: "uname -a\ncat /etc/os-release\nfree -h\ndf -h\nuptime", Language: "bash", Tags: []string{"sysadmin", "diagnostics"}, CreatedAt: "Jun 15, 2026"},
+		{ID: "s5", Name: "ufw Rules", Content: "ufw default deny incoming\nufw default allow outgoing\nufw allow 22/tcp\nufw allow 443/tcp\nufw enable", Language: "bash", Tags: []string{"security", "firewall"}, CreatedAt: "Jun 10, 2026"},
+	}
+}