fix css not imported when prefix used

.gitignore

@@ -1,5 +1,4 @@
 notes/**/**
-.github
 mynotes_*
 _python_example/
 notes/
@@ -13,5 +12,6 @@ __pycache__/
 *.sqlite3
 *.log
 *.bak
+tailwindcss-linux-x64
 
-./gobsidian
+gobsidian

Makefile

@@ -0,0 +1,27 @@
+# Build the project ensuring Tailwind CSS is embedded.
+# Usage:
+#   make build         - builds gobsidian with embedded assets
+#   make build-linux   - builds linux/amd64 binary (for server deploy)
+#   make clean
+
+TAILWIND=./tailwindcss-linux-x64
+TAILWIND_IN=./web/static/tailwind.input.css
+TAILWIND_OUT=./web/static/tailwind.css
+BINARY=gobsidian
+
+.PHONY: build build-linux css clean
+
+css:
+	@echo "Building Tailwind CSS -> $(TAILWIND_OUT)"
+	$(TAILWIND) -i $(TAILWIND_IN) -o $(TAILWIND_OUT) --minify
+
+build: css
+	@echo "Building $(BINARY) with embedded assets"
+	go build -o $(BINARY) ./cmd
+
+build-linux: css
+	@echo "Building $(BINARY) for linux/amd64 with embedded assets"
+	GOOS=linux GOARCH=amd64 go build -o $(BINARY) ./cmd
+
+clean:
+	rm -f $(BINARY)

README.md

@@ -120,10 +120,15 @@ gobsidian/
 ### Building
 
 To build a standalone binary:
-
+```bash
+# in case you change CSS or add some, recompile tailwind.css
+wget https://github.com/tailwindlabs/tailwindcss/releases/download/v4.1.12/tailwindcss-linux-x64
+chmod +x tailwindcss-linux-x64
+./tailwindcss-linux-x64 -i ./web/static/tailwind.input.css -o ./web/static/tailwind.css --minify
+```
 ```bash
 go mod tidy
-go build -o gobsidian ./cmd
+GOOS=linux GOARCH=amd64 go build -o gobsidian ./cmd
 ```
 ## Image storing trying to follow Obsidian settings
 Image storing modes:

go.mod

@@ -9,7 +9,8 @@ require (
 	github.com/gin-gonic/gin v1.9.1
 	github.com/gorilla/sessions v1.2.1
 	github.com/h2non/filetype v1.1.3
-	github.com/yuin/goldmark v1.6.0
+	github.com/yuin/goldmark v1.7.10
+	github.com/yuin/goldmark-emoji v1.0.6
 	github.com/yuin/goldmark-highlighting/v2 v2.0.0-20230729083705-37449abec8cc
 	golang.org/x/crypto v0.9.0
 	gopkg.in/ini.v1 v1.67.0

go.sum

@@ -92,8 +92,10 @@ github.com/twitchyliquid64/golang-asm v0.15.1/go.mod h1:a1lVb/DtPvCB8fslRZhAngC2
 github.com/ugorji/go/codec v1.2.11 h1:BMaWp1Bb6fHwEtbplGBGJ498wD+LKlNSl25MjdZY4dU=
 github.com/ugorji/go/codec v1.2.11/go.mod h1:UNopzCgEMSXjBc6AOMqYvWC1ktqTAfzJZUZgYf6w6lg=
 github.com/yuin/goldmark v1.4.15/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
-github.com/yuin/goldmark v1.6.0 h1:boZcn2GTjpsynOsC0iJHnBWa4Bi0qzfJjthwauItG68=
-github.com/yuin/goldmark v1.6.0/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+github.com/yuin/goldmark v1.7.10 h1:S+LrtBjRmqMac2UdtB6yyCEJm+UILZ2fefI4p7o0QpI=
+github.com/yuin/goldmark v1.7.10/go.mod h1:ip/1k0VRfGynBgxOz0yCqHrbZXhcjxyuS66Brc7iBKg=
+github.com/yuin/goldmark-emoji v1.0.6 h1:QWfF2FYaXwL74tfGOW5izeiZepUDroDJfWubQI9HTHs=
+github.com/yuin/goldmark-emoji v1.0.6/go.mod h1:ukxJDKFpdFb5x0a5HqbdlcKtebh086iJpI31LTKmWuA=
 github.com/yuin/goldmark-highlighting/v2 v2.0.0-20230729083705-37449abec8cc h1:+IAOyRda+RLrxa1WC7umKOZRsGq4QrFFMYApOeHzQwQ=
 github.com/yuin/goldmark-highlighting/v2 v2.0.0-20230729083705-37449abec8cc/go.mod h1:ovIvrum6DQJA4QsJSovrkC4saKHQVs7TvcaeO8AIl5I=
 golang.org/x/arch v0.0.0-20210923205945-b76863e36670/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=

internal/config/config.go

@@ -46,14 +46,6 @@ type Config struct {
 	RequireEmailConfirmation bool
 	MFAEnabledByDefault      bool
 
-	// Email (SMTP) settings
-	SMTPHost     string
-	SMTPPort     int
-	SMTPUsername string
-	SMTPPassword string
-	SMTPSender   string
-	SMTPUseTLS   bool
-
 	// Security settings (failed-login thresholds and auto-ban config)
 	PwdFailuresThreshold  int
 	MFAFailuresThreshold  int
@@ -94,17 +86,9 @@ var defaultConfig = map[string]map[string]string{
 	},
 	"AUTH": {
 		"REQUIRE_ADMIN_ACTIVATION":   "true",
-		"REQUIRE_EMAIL_CONFIRMATION": "true",
+		"REQUIRE_EMAIL_CONFIRMATION": "false",
 		"MFA_ENABLED_BY_DEFAULT":     "false",
 	},
-	"EMAIL": {
-		"SMTP_HOST":     "",
-		"SMTP_PORT":     "587",
-		"SMTP_USERNAME": "",
-		"SMTP_PASSWORD": "",
-		"SMTP_SENDER":   "",
-		"SMTP_USE_TLS":  "true",
-	},
 	"SECURITY": {
 		"PWD_FAILURES_THRESHOLD":  "5",
 		"MFA_FAILURES_THRESHOLD":  "10",
@@ -228,15 +212,6 @@ func Load() (*Config, error) {
 	config.RequireEmailConfirmation, _ = authSection.Key("REQUIRE_EMAIL_CONFIRMATION").Bool()
 	config.MFAEnabledByDefault, _ = authSection.Key("MFA_ENABLED_BY_DEFAULT").Bool()
 
-	// Load EMAIL (SMTP) section
-	emailSection := cfg.Section("EMAIL")
-	config.SMTPHost = emailSection.Key("SMTP_HOST").String()
-	config.SMTPPort, _ = emailSection.Key("SMTP_PORT").Int()
-	config.SMTPUsername = emailSection.Key("SMTP_USERNAME").String()
-	config.SMTPPassword = emailSection.Key("SMTP_PASSWORD").String()
-	config.SMTPSender = emailSection.Key("SMTP_SENDER").String()
-	config.SMTPUseTLS, _ = emailSection.Key("SMTP_USE_TLS").Bool()
-
 	// Load SECURITY section
 	secSection := cfg.Section("SECURITY")
 	config.PwdFailuresThreshold, _ = secSection.Key("PWD_FAILURES_THRESHOLD").Int()
@@ -408,23 +383,6 @@ func (c *Config) SaveSetting(section, key, value string) error {
 		case "MFA_ENABLED_BY_DEFAULT":
 			c.MFAEnabledByDefault = value == "true"
 		}
-	case "EMAIL":
-		switch key {
-		case "SMTP_HOST":
-			c.SMTPHost = value
-		case "SMTP_PORT":
-			if v, err := strconv.Atoi(value); err == nil {
-				c.SMTPPort = v
-			}
-		case "SMTP_USERNAME":
-			c.SMTPUsername = value
-		case "SMTP_PASSWORD":
-			c.SMTPPassword = value
-		case "SMTP_SENDER":
-			c.SMTPSender = value
-		case "SMTP_USE_TLS":
-			c.SMTPUseTLS = value == "true"
-		}
 	case "SECURITY":
 		switch key {
 		case "PWD_FAILURES_THRESHOLD":

internal/handlers/editor.go

@@ -96,8 +96,8 @@ func (h *Handlers) CreateNoteHandler(c *gin.Context) {
 		title += ".md"
 		ext = "md"
 	} else {
-		// Has extension: allow if md or in allowed file extensions
-		allowed := ext == "md"
+		// Has extension: allow if md/markdown or in allowed file extensions
+		allowed := (ext == "md" || ext == "markdown")
 		if !allowed {
 			for _, a := range h.config.AllowedFileExtensions {
 				if strings.EqualFold(a, ext) {
@@ -143,7 +143,7 @@ func (h *Handlers) CreateNoteHandler(c *gin.Context) {
 
     // Redirect based on extension
     redirect := h.config.URLPrefix + "/note/" + notePath
-    if strings.ToLower(ext) != "md" {
+    if e := strings.ToLower(ext); e != "md" && e != "markdown" {
         redirect = h.config.URLPrefix + "/view_text/" + notePath
     }
 
@@ -158,11 +158,12 @@ func (h *Handlers) CreateNoteHandler(c *gin.Context) {
 func (h *Handlers) EditNotePageHandler(c *gin.Context) {
 	notePath := strings.TrimPrefix(c.Param("path"), "/")
 
-	if !strings.HasSuffix(notePath, ".md") {
+	lp := strings.ToLower(notePath)
+	if !(strings.HasSuffix(lp, ".md") || strings.HasSuffix(lp, ".markdown")) {
 		c.HTML(http.StatusBadRequest, "error", gin.H{
 			"error":           "Invalid note path",
 			"app_name":        h.config.AppName,
-			"message":         "Note path must end with .md",
+			"message":         "Note path must end with .md or .markdown",
 			"ContentTemplate": "error_content",
 			"ScriptsTemplate": "error_scripts",
 			"Page":            "error",
@@ -236,7 +237,13 @@ func (h *Handlers) EditNotePageHandler(c *gin.Context) {
 		return
 	}
 
-	title := strings.TrimSuffix(filepath.Base(notePath), ".md")
+	base := filepath.Base(notePath)
+	var title string
+	if strings.HasSuffix(strings.ToLower(base), ".markdown") {
+		title = strings.TrimSuffix(base, ".markdown")
+	} else {
+		title = strings.TrimSuffix(base, ".md")
+	}
 	folderPath := filepath.Dir(notePath)
 	if folderPath == "." {
 		folderPath = ""
@@ -264,7 +271,8 @@ func (h *Handlers) EditNoteHandler(c *gin.Context) {
 	notePath := strings.TrimPrefix(c.Param("path"), "/")
 	content := c.PostForm("content")
 
-	if !strings.HasSuffix(notePath, ".md") {
+	lp := strings.ToLower(notePath)
+	if !(strings.HasSuffix(lp, ".md") || strings.HasSuffix(lp, ".markdown")) {
 		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid note path"})
 		return
 	}

internal/handlers/handlers.go

@@ -1079,11 +1079,12 @@ func (h *Handlers) FolderHandler(c *gin.Context) {
 func (h *Handlers) NoteHandler(c *gin.Context) {
 	notePath := strings.TrimPrefix(c.Param("path"), "/")
 
-	if !strings.HasSuffix(notePath, ".md") {
+	// Allow both .md and .markdown files
+	if !(strings.HasSuffix(strings.ToLower(notePath), ".md") || strings.HasSuffix(strings.ToLower(notePath), ".markdown")) {
 		c.HTML(http.StatusBadRequest, "error", gin.H{
 			"error":            "Invalid note path",
 			"app_name":         h.config.AppName,
-			"message":          "Note path must end with .md",
+			"message":          "Note path must end with .md or .markdown",
 			"ContentTemplate":  "error_content",
 			"ScriptsTemplate":  "error_scripts",
 			"Page":             "error",
@@ -1143,6 +1144,27 @@ func (h *Handlers) NoteHandler(c *gin.Context) {
 	fullPath := filepath.Join(h.config.NotesDir, notePath)
 
 	if _, err := os.Stat(fullPath); os.IsNotExist(err) {
+		// Fallback: try the alternate markdown extension
+		base := filepath.Base(notePath)
+		dir := filepath.Dir(notePath)
+		lower := strings.ToLower(base)
+		var alt string
+		if strings.HasSuffix(lower, ".md") {
+			alt = base[:len(base)-len(".md")] + ".markdown"
+		} else if strings.HasSuffix(lower, ".markdown") {
+			alt = base[:len(base)-len(".markdown")] + ".md"
+		}
+		if alt != "" {
+			altRel := alt
+			if dir != "." && dir != "" {
+				altRel = filepath.Join(dir, alt)
+			}
+			altFull := filepath.Join(h.config.NotesDir, altRel)
+			if _, err2 := os.Stat(altFull); err2 == nil {
+				// Use the alternate path
+				notePath = altRel
+				fullPath = altFull
+			} else {
 				c.HTML(http.StatusNotFound, "error", gin.H{
 					"error":            "Note not found",
 					"app_name":         h.config.AppName,
@@ -1153,6 +1175,18 @@ func (h *Handlers) NoteHandler(c *gin.Context) {
 				})
 				return
 			}
+		} else {
+			c.HTML(http.StatusNotFound, "error", gin.H{
+				"error":            "Note not found",
+				"app_name":         h.config.AppName,
+				"message":          "The requested note does not exist",
+				"ContentTemplate":  "error_content",
+				"ScriptsTemplate":  "error_scripts",
+				"Page":             "error",
+			})
+			return
+		}
+	}
 
 	content, err := os.ReadFile(fullPath)
 	if err != nil {
@@ -1193,7 +1227,16 @@ func (h *Handlers) NoteHandler(c *gin.Context) {
 		return
 	}
 
-	title := strings.TrimSuffix(filepath.Base(notePath), ".md")
+	base := filepath.Base(notePath)
+	lower := strings.ToLower(base)
+	var title string
+	if strings.HasSuffix(lower, ".markdown") {
+		title = base[:len(base)-len(".markdown")]
+	} else if strings.HasSuffix(lower, ".md") {
+		title = base[:len(base)-len(".md")]
+	} else {
+		title = strings.TrimSuffix(base, filepath.Ext(base))
+	}
 	folderPath := filepath.Dir(notePath)
 	if folderPath == "." {
 		folderPath = ""
@@ -1679,7 +1722,7 @@ func (h *Handlers) SearchHandler(c *gin.Context) {
 
 		// Skip disallowed files
 		ext := strings.ToLower(filepath.Ext(relPath))
-		isMD := ext == ".md"
+		isMD := ext == ".md" || ext == ".markdown"
 		if !isMD && !models.IsAllowedFile(relPath, h.config.AllowedFileExtensions) {
 			return nil
 		}

internal/markdown/renderer.go

@@ -13,6 +13,7 @@ import (
 	"github.com/yuin/goldmark/extension"
 	"github.com/yuin/goldmark/parser"
 	"github.com/yuin/goldmark/renderer/html"
+	emoji "github.com/yuin/goldmark-emoji"
 
 	"gobsidian/internal/config"
 )
@@ -22,6 +23,38 @@ type Renderer struct {
 	config *config.Config
 }
 
+// processMermaidFences wraps fenced code blocks marked as "mermaid" into <div class="mermaid">...</div>
+func (r *Renderer) processMermaidFences(content string) string {
+	// ```mermaid\n...\n```
+	re := regexp.MustCompile("(?s)```mermaid\\s*(.*?)\\s*```")
+	return re.ReplaceAllString(content, "<div class=\"mermaid\">$1</div>")
+}
+
+// processMediaEmbeds turns a bare URL on its own line into an embed element
+// Supports: audio (mp3|wav|ogg), video (mp4|webm|ogg), pdf
+func (r *Renderer) processMediaEmbeds(content string) string {
+	lines := strings.Split(content, "\n")
+	mediaRe := regexp.MustCompile(`^(https?://\S+\.(?:mp3|wav|ogg|mp4|webm|ogg|pdf))$`)
+
+	for i, ln := range lines {
+		trimmed := strings.TrimSpace(ln)
+		m := mediaRe.FindStringSubmatch(trimmed)
+		if len(m) == 0 {
+			continue
+		}
+		url := m[1]
+		switch {
+		case strings.HasSuffix(strings.ToLower(url), ".mp3") || strings.HasSuffix(strings.ToLower(url), ".wav") || strings.HasSuffix(strings.ToLower(url), ".ogg"):
+			lines[i] = fmt.Sprintf("<audio controls preload=\"metadata\" src=\"%s\"></audio>", url)
+		case strings.HasSuffix(strings.ToLower(url), ".mp4") || strings.HasSuffix(strings.ToLower(url), ".webm") || strings.HasSuffix(strings.ToLower(url), ".ogg"):
+			lines[i] = fmt.Sprintf("<video controls preload=\"metadata\" style=\"max-width:100%%\" src=\"%s\"></video>", url)
+		case strings.HasSuffix(strings.ToLower(url), ".pdf"):
+			lines[i] = fmt.Sprintf("<iframe src=\"%s\" style=\"width:100%%;height:70vh;border:1px solid #374151;border-radius:8px\"></iframe>", url)
+		}
+	}
+	return strings.Join(lines, "\n")
+}
+
 func NewRenderer(cfg *config.Config) *Renderer {
 	md := goldmark.New(
 		goldmark.WithExtensions(
@@ -29,6 +62,11 @@ func NewRenderer(cfg *config.Config) *Renderer {
 			extension.Table,
 			extension.Strikethrough,
 			extension.TaskList,
+			extension.Footnote,
+			extension.DefinitionList,
+			extension.Linkify,
+			extension.Typographer,
+			emoji.Emoji,
 			highlighting.NewHighlighting(
 				highlighting.WithStyle("github-dark"),
 				highlighting.WithFormatOptions(
@@ -61,6 +99,12 @@ func (r *Renderer) RenderMarkdown(content string, notePath string) (string, erro
 	// Process Obsidian links
 	content = r.processObsidianLinks(content)
 
+	// Convert Mermaid fenced code blocks to <div class="mermaid"> for client rendering
+	content = r.processMermaidFences(content)
+
+	// Convert bare media links on their own line to embedded players (audio/video/pdf)
+	content = r.processMediaEmbeds(content)
+
 	var buf bytes.Buffer
 	if err := r.md.Convert([]byte(content), &buf); err != nil {
 		return "", err

internal/models/models.go

@@ -45,7 +45,7 @@ type ImageStorageInfo struct {
 func GetFileType(extension string, allowedImageExts, allowedFileExts []string) FileType {
 	ext := strings.ToLower(strings.TrimPrefix(extension, "."))
 
-	if ext == "md" {
+	if ext == "md" || ext == "markdown" {
 		return FileTypeMarkdown
 	}
 

internal/utils/utils.go

@@ -136,7 +136,15 @@ func GetFolderContents(folderPath string, cfg *config.Config) ([]models.FileInfo
 
 			// Set display name based on file type
 			if fileInfo.Type == models.FileTypeMarkdown {
-				fileInfo.DisplayName = strings.TrimSuffix(entry.Name(), ".md")
+				name := entry.Name()
+				lower := strings.ToLower(name)
+				if strings.HasSuffix(lower, ".markdown") {
+					fileInfo.DisplayName = name[:len(name)-len(".markdown")]
+				} else if strings.HasSuffix(lower, ".md") {
+					fileInfo.DisplayName = name[:len(name)-len(".md")]
+				} else {
+					fileInfo.DisplayName = strings.TrimSuffix(name, filepath.Ext(name))
+				}
 			} else {
 				fileInfo.DisplayName = entry.Name()
 			}

tailwind.config.js

@@ -0,0 +1,34 @@
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+  darkMode: 'class',
+  content: [
+    "./web/templates/**/*.html",
+    "./web/static/styles.css",
+    "./web/static/*.js",
+    "./**/*.go"
+  ],
+  theme: {
+    extend: {
+      colors: {
+        obsidian: {
+          50:  '#f8fafc',
+          100: '#f1f5f9',
+          200: '#e2e8f0',
+          300: '#cbd5e1',
+          400: '#94a3b8',
+          500: '#64748b',
+          600: '#475569',
+          700: '#334155',
+          800: '#1e293b',
+          900: '#0f172a',
+        },
+      },
+    },
+  },
+  safelist: [],
+  plugins: [],
+}
+
+// wget https://github.com/tailwindlabs/tailwindcss/releases/download/v4.1.12/tailwindcss-linux-x64
+// chmod +x tailwindcss-linux-x64
+// ./tailwindcss-linux-x64 -i ./web/static/tailwind.input.css -o ./web/static/tailwind.css --minify

web/static/tailwind.input.css

@@ -0,0 +1 @@
+@import "tailwindcss";

web/templates/admin.html

@@ -11,6 +11,22 @@
   </div>
 
   <div class="space-y-8">
+    <!-- Quick Actions -->
+    <div class="bg-gray-800 rounded-lg p-6">
+        <div class="flex items-center justify-between">
+            <div>
+                <h2 class="text-xl font-semibold text-white mb-1">
+                    <i class="fas fa-tools mr-2"></i>Admin Tools
+                </h2>
+                <p class="text-gray-400">Access logs and security controls</p>
+            </div>
+            <div class="flex items-center gap-3">
+                <a href="{{url "/editor/admin/logs"}}" class="btn-secondary inline-flex items-center">
+                    <i class="fas fa-list mr-2"></i>View Logs
+                </a>
+            </div>
+        </div>
+    </div>
     <!-- Users -->
     <div class="bg-gray-800 rounded-lg p-6">
       <h2 class="text-xl font-semibold text-white mb-4">

web/templates/base.html

@@ -5,30 +5,8 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>{{.app_name}}</title>
-    <script src="https://cdn.tailwindcss.com"></script>
-    <script>
-        tailwind.config = {
-            darkMode: 'class',
-            theme: {
-                extend: {
-                    colors: {
-                        'obsidian': {
-                            '50': '#f8fafc',
-                            '100': '#f1f5f9',
-                            '200': '#e2e8f0',
-                            '300': '#cbd5e1',
-                            '400': '#94a3b8',
-                            '500': '#64748b',
-                            '600': '#475569',
-                            '700': '#334155',
-                            '800': '#1e293b',
-                            '900': '#0f172a',
-                        }
-                    }
-                }
-            }
-        }
-    </script>
+    <link rel="stylesheet" href="{{url "/static/tailwind.css"}}">
+    <link rel="stylesheet" href="{{url "/static/styles.css"}}">
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/styles/github-dark.min.css">
     <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/highlight.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/go.min.js"></script>
@@ -41,6 +19,8 @@
     <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/sql.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/bash.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/css.min.js"></script>
+    <!-- Mermaid for diagrams -->
+    <script src="https://cdn.jsdelivr.net/npm/mermaid@10/dist/mermaid.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/js/all.min.js"></script>
     <style>
         /* Custom scrollbar for dark theme */
@@ -66,6 +46,21 @@
         .prose-dark h1, .prose-dark h2, .prose-dark h3, .prose-dark h4, .prose-dark h5, .prose-dark h6 {
             color: white;
         }
+        /* Headings sizing and spacing */
+        .prose-dark h1 { font-size: 1.875rem; line-height: 2.25rem; margin-top: 1.5rem; margin-bottom: 0.75rem; }
+        .prose-dark h2 { font-size: 1.5rem; line-height: 2rem; margin-top: 1.25rem; margin-bottom: 0.5rem; }
+        .prose-dark h3 { font-size: 1.25rem; line-height: 1.75rem; margin-top: 1rem; margin-bottom: 0.5rem; }
+        .prose-dark h4 { font-size: 1.125rem; line-height: 1.5rem; margin-top: 0.75rem; margin-bottom: 0.5rem; }
+        .prose-dark p { margin: 0.75rem 0; }
+        .prose-dark hr { border-color: #374151; margin: 1.25rem 0; }
+
+        /* Lists */
+        .prose-dark ul { list-style-type: disc; padding-left: 1.5rem; margin: 0.75rem 0; }
+        .prose-dark ol { list-style-type: decimal; padding-left: 1.5rem; margin: 0.75rem 0; }
+        .prose-dark li { margin: 0.25rem 0; }
+        .prose-dark li > ul { list-style-type: circle; }
+        .prose-dark li > ol { list-style-type: lower-alpha; }
+
         .prose-dark a {
             color: #60a5fa;
         }
@@ -81,7 +76,9 @@
         .prose-dark pre {
             background-color: #111827;
             border: 1px solid #374151;
+            overflow: auto;
         }
+        .prose-dark pre code { background: transparent; color: inherit; padding: 0; }
         .prose-dark blockquote {
             border-left: 4px solid #3b82f6;
             background-color: #1f2937;
@@ -255,6 +252,20 @@
             transform: rotate(90deg);
         }
     </style>
+    <script>
+    // Initialize Mermaid (dark theme) and run on page load
+    document.addEventListener('DOMContentLoaded', function() {
+        if (window.mermaid) {
+            try {
+                window.mermaid.initialize({ startOnLoad: false, theme: 'dark' });
+                const containers = document.querySelectorAll('.mermaid');
+                if (containers.length) {
+                    window.mermaid.run({ querySelector: '.mermaid' });
+                }
+            } catch (e) {}
+        }
+    });
+    </script>
 </head>
 <body class="bg-slate-900 text-gray-300 min-h-screen">
     <div class="flex h-screen">
@@ -264,14 +275,21 @@
             <!-- Header -->
             <div class="p-4 border-b border-gray-700">
                 <div class="flex items-center justify-between">
-                    <a href="{{url "/"}}" class="sidebar-title text-xl font-bold text-white hover:text-blue-300" title="Home">
-                        {{.app_name}}
+                    <a href="{{url "/"}}" class="sidebar-title text-xl font-bold text-white hover:text-blue-300" title="Home" aria-label="Home">
+                        <i class="fas fa-house"></i>
+                        <span class="sr-only">{{.app_name}}</span>
                     </a>
                     <div class="flex items-center space-x-2 items-center">
                         <div class="sidebar-actions flex items-center space-x-3">
                             <button id="open-search" class="text-gray-400 hover:text-white transition-colors" title="Search" aria-label="Search">
                                 <i class="fas fa-magnifying-glass"></i>
                             </button>
+                            <button id="expand-all" class="text-gray-400 hover:text-white transition-colors" title="Expand all" aria-label="Expand all">
+                                <i class="fas fa-folder-open"></i>
+                            </button>
+                            <button id="collapse-all" class="text-gray-400 hover:text-white transition-colors" title="Collapse all" aria-label="Collapse all">
+                                <i class="fas fa-folder"></i>
+                            </button>
                             {{if .Authenticated}}
                                 {{if .IsAdmin}}
                                     <a href="{{url "/editor/admin"}}" class="text-gray-400 hover:text-white transition-colors" title="Admin">
@@ -404,7 +422,19 @@
     <!-- Scripts -->
     <script>
         // Initialize syntax highlighting
-        hljs.highlightAll();
+        // Avoid warnings and double-highlighting: skip elements already highlighted by Chroma
+        if (window.hljs) {
+            try {
+                // Suppress unescaped HTML warnings from hljs
+                window.hljs.configure({ ignoreUnescapedHTML: true });
+                // Only highlight code blocks that are not inside a .chroma container
+                document.querySelectorAll('pre code').forEach(function (el) {
+                    if (!el.closest('.chroma')) {
+                        window.hljs.highlightElement(el);
+                    }
+                });
+            } catch (e) { /* ignore */ }
+        }
 
         // Base URL prefix from server
         window.BASE = '{{base}}';
@@ -418,18 +448,48 @@
             return p[0] === '/' ? (b + p) : (b + '/' + p);
         };
 
-        // Tree functionality
+        // Tree functionality with persisted expanded state
+        const LS_KEY_EXPANDED = 'tree:expanded';
+        function getExpandedSet() {
+            try {
+                const raw = localStorage.getItem(LS_KEY_EXPANDED);
+                const arr = raw ? JSON.parse(raw) : [];
+                return new Set(Array.isArray(arr) ? arr : []);
+            } catch { return new Set(); }
+        }
+        function saveExpandedSet(set) {
+            try { localStorage.setItem(LS_KEY_EXPANDED, JSON.stringify(Array.from(set))); } catch {}
+        }
+        function setExpanded(toggleEl, expand) {
+            const children = toggleEl.nextElementSibling;
+            const chevron = toggleEl.querySelector('.tree-chevron');
+            if (!children || !children.classList.contains('tree-children')) return;
+            const isHidden = children.classList.contains('hidden');
+            if (expand && isHidden) children.classList.remove('hidden');
+            if (!expand && !isHidden) children.classList.add('hidden');
+            if (chevron) chevron.classList.toggle('rotate-90', expand);
+        }
+        function applyExpandedState() {
+            const expanded = getExpandedSet();
+            document.querySelectorAll('.tree-toggle').forEach(t => {
+                const path = t.getAttribute('data-path') || '';
+                const shouldExpand = expanded.has(path);
+                setExpanded(t, shouldExpand);
+            });
+        }
         document.addEventListener('click', function(e) {
             if (e.target.closest('.tree-toggle')) {
                 const toggle = e.target.closest('.tree-toggle');
                 const children = toggle.nextElementSibling;
                 const chevron = toggle.querySelector('.tree-chevron');
-                
                 if (children && children.classList.contains('tree-children')) {
+                    const expanded = getExpandedSet();
+                    const path = toggle.getAttribute('data-path') || '';
+                    const willExpand = children.classList.contains('hidden');
                     children.classList.toggle('hidden');
-                    if (chevron) {
-                        chevron.classList.toggle('rotate-90');
-                    }
+                    if (chevron) chevron.classList.toggle('rotate-90');
+                    if (willExpand) expanded.add(path); else expanded.delete(path);
+                    saveExpandedSet(expanded);
                 }
             }
         });
@@ -458,6 +518,11 @@
                             if (chevron) {
                                 chevron.classList.add('rotate-90');
                             }
+                            // persist this expanded state
+                            const expanded = getExpandedSet();
+                            const path = toggle.getAttribute('data-path') || '';
+                            expanded.add(path);
+                            saveExpandedSet(expanded);
                         }
                     }
                     parent = parent.parentElement;
@@ -528,9 +593,28 @@
                 });
             }
 
-            // Expand active path in tree
+            // Apply persisted expanded folders, then ensure active path is expanded
+            applyExpandedState();
             expandActivePath();
 
+            // Wire expand/collapse all
+            const expandAllBtn = document.getElementById('expand-all');
+            const collapseAllBtn = document.getElementById('collapse-all');
+            if (expandAllBtn) expandAllBtn.addEventListener('click', function() {
+                const expanded = getExpandedSet();
+                document.querySelectorAll('.tree-toggle').forEach(t => {
+                    const path = t.getAttribute('data-path') || '';
+                    setExpanded(t, true);
+                    expanded.add(path);
+                });
+                saveExpandedSet(expanded);
+            });
+            if (collapseAllBtn) collapseAllBtn.addEventListener('click', function() {
+                const expanded = new Set();
+                document.querySelectorAll('.tree-toggle').forEach(t => setExpanded(t, false));
+                saveExpandedSet(expanded);
+            });
+
             // Sidebar tree fallback: if server didn't render any tree nodes (e.g., error pages), fetch and render via API
             (function ensureSidebarTree() {
                 const container = document.getElementById('sidebar-tree');
@@ -549,6 +633,7 @@
                             container.appendChild(renderTreeNode(child));
                         });
                         // Re-apply expanded state and active path if any
+                        applyExpandedState();
                         expandActivePath();
                     })
                     .catch(() => {/* ignore */});

web/templates/create.html

@@ -77,6 +77,69 @@ console.log('Hello, World!');
                 </div>
             </div>
 
+            <!-- Editor Toolbar -->
+            <div class="flex items-center justify-between border-t border-gray-700 pt-4">
+                <div class="flex items-center flex-wrap gap-2">
+                    <button type="button" class="btn-secondary text-sm" onclick="insertMarkdown('**', '**')" title="Bold">
+                        <i class="fas fa-bold"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertMarkdown('*', '*')" title="Italic">
+                        <i class="fas fa-italic"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertMarkdown('~~', '~~')" title="Strikethrough">
+                        <i class="fas fa-strikethrough"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertMarkdown('`', '`')" title="Inline code">
+                        <i class="fas fa-code"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertCodeBlock()" title="Code block">
+                        <i class="fas fa-file-code"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertMermaid()" title="Mermaid diagram">
+                        <i class="fas fa-project-diagram"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertMarkdown('[', '](url)')" title="Link">
+                        <i class="fas fa-link"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertMarkdown('![', '](image.png)')" title="Image">
+                        <i class="fas fa-image"></i>
+                    </button>
+                    <!-- Headings dropdown -->
+                    <div class="relative">
+                        <button type="button" class="btn-secondary text-sm" onclick="toggleHeadingMenu(event)" title="Headings">
+                            <i class="fas fa-heading"></i>
+                        </button>
+                        <div id="heading-menu" class="absolute z-10 hidden bg-slate-800 border border-gray-700 rounded shadow-lg right-0 bottom-full mb-2">
+                            <button type="button" class="block w-full text-left px-3 py-2 hover:bg-slate-700" onclick="insertHeadingLevel(1)">H1</button>
+                            <button type="button" class="block w-full text-left px-3 py-2 hover:bg-slate-700" onclick="insertHeadingLevel(2)">H2</button>
+                            <button type="button" class="block w-full text-left px-3 py-2 hover:bg-slate-700" onclick="insertHeadingLevel(3)">H3</button>
+                            <button type="button" class="block w-full text-left px-3 py-2 hover:bg-slate-700" onclick="insertHeadingLevel(4)">H4</button>
+                            <button type="button" class="block w-full text-left px-3 py-2 hover:bg-slate-700" onclick="insertHeadingLevel(5)">H5</button>
+                            <button type="button" class="block w-full text-left px-3 py-2 hover:bg-slate-700" onclick="insertHeadingLevel(6)">H6</button>
+                        </div>
+                    </div>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertList()" title="Bulleted list">
+                        <i class="fas fa-list"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertNumberedList()" title="Numbered list">
+                        <i class="fas fa-list-ol"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertChecklist()" title="Task list">
+                        <i class="fas fa-square-check"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertBlockquote()" title="Blockquote">
+                        <i class="fas fa-quote-left"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertHr()" title="Horizontal rule">
+                        <i class="fas fa-minus"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertTable()" title="Table">
+                        <i class="fas fa-table"></i>
+                    </button>
+                </div>
+                <div class="text-xs text-gray-500">Press Ctrl+S to create</div>
+            </div>
+
             <!-- Actions -->
             
         </div>
@@ -145,16 +208,38 @@ console.log('Hello, World!');
         }
     }
 
+    function transformMermaidFences(md) {
+        return (md || '').replace(/```mermaid\n([\s\S]*?)```/g, function(_, inner){
+            return `<div class=\"mermaid\">${inner}</div>`;
+        });
+    }
+
+    function transformMediaEmbeds(md) {
+        const lines = (md || '').split(/\n/);
+        return lines.map(l => {
+            const t = l.trim();
+            if (/^https?:\/\/\S+\.(?:mp3|wav|ogg)$/.test(t)) return `<audio controls preload=\"metadata\" src=\"${t}\"></audio>`;
+            if (/^https?:\/\/\S+\.(?:mp4|webm|ogg)$/.test(t)) return `<video controls preload=\"metadata\" style=\"max-width:100%\" src=\"${t}\"></video>`;
+            if (/^https?:\/\/\S+\.(?:pdf)$/.test(t)) return `<iframe src=\"${t}\" style=\"width:100%;height:70vh;border:1px solid #374151;border-radius:8px\"></iframe>`;
+            return l;
+        }).join('\n');
+    }
+
     // Render preview
     function renderPreview() {
         if (!previewEnabled) return;
         if (!livePreview || !window.marked) return;
-        const transformed = transformObsidianEmbeds(contentTextarea.value || '');
+        let transformed = transformObsidianEmbeds(contentTextarea.value || '');
+        transformed = transformMermaidFences(transformed);
+        transformed = transformMediaEmbeds(transformed);
         livePreview.innerHTML = marked.parse(transformed);
         // Highlight code blocks
         livePreview.querySelectorAll('pre code').forEach(block => {
             try { hljs.highlightElement(block); } catch (e) {}
         });
+        if (window.mermaid) {
+            try { window.mermaid.run({ querySelector: '#live-preview .mermaid' }); } catch (e) {}
+        }
     }
 
     createForm.addEventListener('submit', function(e) {
@@ -238,6 +323,154 @@ console.log('Hello, World!');
         }
     });
 
+    // Markdown insertion functions (parity with edit.html)
+    function insertMarkdown(before, after) {
+        const start = contentTextarea.selectionStart;
+        const end = contentTextarea.selectionEnd;
+        const text = contentTextarea.value;
+        const selectedText = text.substring(start, end);
+        const newText = text.substring(0, start) + before + selectedText + after + text.substring(end);
+        contentTextarea.value = newText;
+        const newPos = start + before.length + selectedText.length;
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(newPos, newPos);
+        renderPreview();
+    }
+
+    function toggleHeadingMenu(e) {
+        const menu = document.getElementById('heading-menu');
+        if (!menu) return;
+        const wasHidden = menu.classList.contains('hidden');
+        menu.classList.remove('hidden');
+        menu.classList.remove('top-full','mt-2','bottom-full','mb-2');
+        const btn = e.currentTarget;
+        const rect = btn.getBoundingClientRect();
+        const spaceBelow = window.innerHeight - rect.bottom;
+        const spaceAbove = rect.top;
+        const needed = Math.max(menu.offsetHeight || 192, 192) + 12;
+        if (spaceBelow < needed && spaceAbove >= needed) {
+            menu.classList.add('bottom-full','mb-2','right-0');
+        } else {
+            menu.classList.add('top-full','mt-2','right-0');
+        }
+        if (wasHidden) {
+            const close = (ev) => {
+                if (!menu.contains(ev.target) && ev.target !== btn) {
+                    menu.classList.add('hidden');
+                    document.removeEventListener('click', close);
+                }
+            };
+            setTimeout(() => document.addEventListener('click', close), 0);
+        }
+    }
+
+    function insertHeadingLevel(level) {
+        const start = contentTextarea.selectionStart;
+        const text = contentTextarea.value;
+        const lineStart = text.lastIndexOf('\n', start - 1) + 1;
+        const hashes = '#'.repeat(Math.min(Math.max(level,1),6)) + ' ';
+        const newText = text.substring(0, lineStart) + hashes + text.substring(lineStart);
+        contentTextarea.value = newText;
+        const newPos = start + hashes.length;
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(newPos, newPos);
+        const menu = document.getElementById('heading-menu');
+        if (menu) menu.classList.add('hidden');
+        renderPreview();
+    }
+
+    function insertList() {
+        const start = contentTextarea.selectionStart;
+        const text = contentTextarea.value;
+        const lineStart = text.lastIndexOf('\n', start - 1) + 1;
+        const newText = text.substring(0, lineStart) + '- ' + text.substring(lineStart);
+        contentTextarea.value = newText;
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(start + 2, start + 2);
+        renderPreview();
+    }
+
+    function insertNumberedList() {
+        const start = contentTextarea.selectionStart;
+        const text = contentTextarea.value;
+        const lineStart = text.lastIndexOf('\n', start - 1) + 1;
+        const newText = text.substring(0, lineStart) + '1. ' + text.substring(lineStart);
+        contentTextarea.value = newText;
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(start + 3, start + 3);
+        renderPreview();
+    }
+
+    function insertChecklist() {
+        const start = contentTextarea.selectionStart;
+        const text = contentTextarea.value;
+        const lineStart = text.lastIndexOf('\n', start - 1) + 1;
+        const newText = text.substring(0, lineStart) + '- [ ] ' + text.substring(lineStart);
+        contentTextarea.value = newText;
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(start + 6, start + 6);
+        renderPreview();
+    }
+
+    function insertBlockquote() {
+        const start = contentTextarea.selectionStart;
+        const text = contentTextarea.value;
+        const lineStart = text.lastIndexOf('\n', start - 1) + 1;
+        const newText = text.substring(0, lineStart) + '> ' + text.substring(lineStart);
+        contentTextarea.value = newText;
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(start + 2, start + 2);
+        renderPreview();
+    }
+
+    function insertHr() {
+        const start = contentTextarea.selectionStart;
+        const text = contentTextarea.value;
+        const insert = '\n\n---\n\n';
+        const newText = text.substring(0, start) + insert + text.substring(start);
+        contentTextarea.value = newText;
+        const pos = start + insert.length;
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(pos, pos);
+        renderPreview();
+    }
+
+    function insertCodeBlock() {
+        const start = contentTextarea.selectionStart;
+        const text = contentTextarea.value;
+        const insert = '\n```language\n// code\n```\n';
+        const newText = text.substring(0, start) + insert + text.substring(start);
+        contentTextarea.value = newText;
+        const pos = start + 4;
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(pos, pos);
+        renderPreview();
+    }
+
+    function insertMermaid() {
+        const start = contentTextarea.selectionStart;
+        const text = contentTextarea.value;
+        const tpl = '\n```mermaid\nflowchart TD\n  A[Start] --> B{Decision}\n  B -- Yes --> C[Do thing]\n  B -- No  --> D[Something else]\n```\n';
+        const newText = text.substring(0, start) + tpl + text.substring(start);
+        contentTextarea.value = newText;
+        const pos = start + 4;
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(pos, pos);
+        renderPreview();
+    }
+
+    function insertTable() {
+        const start = contentTextarea.selectionStart;
+        const text = contentTextarea.value;
+        const tpl = '\n| Col 1 | Col 2 | Col 3 |\n|-------|-------|-------|\n|  A1   |  B1   |  C1   |\n|  A2   |  B2   |  C2   |\n';
+        const newText = text.substring(0, start) + tpl + text.substring(start);
+        contentTextarea.value = newText;
+        const pos = start + 3;
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(pos, pos);
+        renderPreview();
+    }
+
     // Paste-to-upload image
     contentTextarea.addEventListener('paste', async function(e) {
         const items = (e.clipboardData || window.clipboardData).items || [];

web/templates/edit.html

@@ -43,28 +43,63 @@
 
             <!-- Editor Toolbar -->
             <div class="flex items-center justify-between border-t border-gray-700 pt-4">
-                <div class="flex items-center space-x-2">
+                <div class="flex items-center flex-wrap gap-2">
                     <button type="button" class="btn-secondary text-sm" onclick="insertMarkdown('**', '**')" title="Bold">
                         <i class="fas fa-bold"></i>
                     </button>
                     <button type="button" class="btn-secondary text-sm" onclick="insertMarkdown('*', '*')" title="Italic">
                         <i class="fas fa-italic"></i>
                     </button>
-                    <button type="button" class="btn-secondary text-sm" onclick="insertMarkdown('`', '`')" title="Code">
+                    <button type="button" class="btn-secondary text-sm" onclick="insertMarkdown('~~', '~~')" title="Strikethrough">
+                        <i class="fas fa-strikethrough"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertMarkdown('`', '`')" title="Inline code">
                         <i class="fas fa-code"></i>
                     </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertCodeBlock()" title="Code block">
+                        <i class="fas fa-file-code"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertMermaid()" title="Mermaid diagram">
+                        <i class="fas fa-project-diagram"></i>
+                    </button>
                     <button type="button" class="btn-secondary text-sm" onclick="insertMarkdown('[', '](url)')" title="Link">
                         <i class="fas fa-link"></i>
                     </button>
                     <button type="button" class="btn-secondary text-sm" onclick="insertMarkdown('![', '](image.png)')" title="Image">
                         <i class="fas fa-image"></i>
                     </button>
-                    <button type="button" class="btn-secondary text-sm" onclick="insertHeading()" title="Heading">
+                    <!-- Headings dropdown -->
+                    <div class="relative">
+                        <button type="button" class="btn-secondary text-sm" onclick="toggleHeadingMenu(event)" title="Headings">
                             <i class="fas fa-heading"></i>
                         </button>
-                    <button type="button" class="btn-secondary text-sm" onclick="insertList()" title="List">
+                        <div id="heading-menu" class="absolute z-10 hidden bg-slate-800 border border-gray-700 rounded shadow-lg right-0 bottom-full mb-2">
+                            <button type="button" class="block w-full text-left px-3 py-2 hover:bg-slate-700" onclick="insertHeadingLevel(1)">H1</button>
+                            <button type="button" class="block w-full text-left px-3 py-2 hover:bg-slate-700" onclick="insertHeadingLevel(2)">H2</button>
+                            <button type="button" class="block w-full text-left px-3 py-2 hover:bg-slate-700" onclick="insertHeadingLevel(3)">H3</button>
+                            <button type="button" class="block w-full text-left px-3 py-2 hover:bg-slate-700" onclick="insertHeadingLevel(4)">H4</button>
+                            <button type="button" class="block w-full text-left px-3 py-2 hover:bg-slate-700" onclick="insertHeadingLevel(5)">H5</button>
+                            <button type="button" class="block w-full text-left px-3 py-2 hover:bg-slate-700" onclick="insertHeadingLevel(6)">H6</button>
+                        </div>
+                    </div>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertList()" title="Bulleted list">
                         <i class="fas fa-list"></i>
                     </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertNumberedList()" title="Numbered list">
+                        <i class="fas fa-list-ol"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertChecklist()" title="Task list">
+                        <i class="fas fa-square-check"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertBlockquote()" title="Blockquote">
+                        <i class="fas fa-quote-left"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertHr()" title="Horizontal rule">
+                        <i class="fas fa-minus"></i>
+                    </button>
+                    <button type="button" class="btn-secondary text-sm" onclick="insertTable()" title="Table">
+                        <i class="fas fa-table"></i>
+                    </button>
                 </div>
                 
                 <div class="text-xs text-gray-500">
@@ -139,14 +174,36 @@
         }
     }
 
+    function transformMermaidFences(md) {
+        return (md || '').replace(/```mermaid\n([\s\S]*?)```/g, function(_, inner){
+            return `<div class=\"mermaid\">${inner}</div>`;
+        });
+    }
+
+    function transformMediaEmbeds(md) {
+        const lines = (md || '').split(/\n/);
+        return lines.map(l => {
+            const t = l.trim();
+            if (/^https?:\/\/\S+\.(?:mp3|wav|ogg)$/.test(t)) return `<audio controls preload=\"metadata\" src=\"${t}\"></audio>`;
+            if (/^https?:\/\/\S+\.(?:mp4|webm|ogg)$/.test(t)) return `<video controls preload=\"metadata\" style=\"max-width:100%\" src=\"${t}\"></video>`;
+            if (/^https?:\/\/\S+\.(?:pdf)$/.test(t)) return `<iframe src=\"${t}\" style=\"width:100%;height:70vh;border:1px solid #374151;border-radius:8px\"></iframe>`;
+            return l;
+        }).join('\n');
+    }
+
     function renderPreview() {
         if (!previewEnabled) return;
         if (!livePreview || !window.marked) return;
-        const transformed = transformObsidianEmbeds(contentTextarea.value || '');
+        let transformed = transformObsidianEmbeds(contentTextarea.value || '');
+        transformed = transformMermaidFences(transformed);
+        transformed = transformMediaEmbeds(transformed);
         livePreview.innerHTML = marked.parse(transformed);
         livePreview.querySelectorAll('pre code').forEach(block => {
             try { hljs.highlightElement(block); } catch (e) {}
         });
+        if (window.mermaid) {
+            try { window.mermaid.run({ querySelector: '#live-preview .mermaid' }); } catch (e) {}
+        }
     }
 
     editForm.addEventListener('submit', function(e) {
@@ -247,22 +304,52 @@
         autoResize();
     }
 
-    function insertHeading() {
+    function toggleHeadingMenu(e) {
+        const menu = document.getElementById('heading-menu');
+        if (!menu) return;
+        // Show to measure, then decide direction
+        const wasHidden = menu.classList.contains('hidden');
+        menu.classList.remove('hidden');
+        // Reset placement classes
+        menu.classList.remove('top-full','mt-2','bottom-full','mb-2');
+        // Determine available space
+        const btn = e.currentTarget;
+        const rect = btn.getBoundingClientRect();
+        const spaceBelow = window.innerHeight - rect.bottom;
+        const spaceAbove = rect.top;
+        const needed = Math.max(menu.offsetHeight || 192, 192) + 12; // fallback height
+        if (spaceBelow < needed && spaceAbove >= needed) {
+            // Open upwards
+            menu.classList.add('bottom-full','mb-2','right-0');
+        } else {
+            // Open downwards
+            menu.classList.add('top-full','mt-2','right-0');
+        }
+
+        if (wasHidden) {
+            const close = (ev) => {
+                if (!menu.contains(ev.target) && ev.target !== btn) {
+                    menu.classList.add('hidden');
+                    document.removeEventListener('click', close);
+                }
+            };
+            setTimeout(() => document.addEventListener('click', close), 0);
+        }
+    }
+
+    function insertHeadingLevel(level) {
         const start = contentTextarea.selectionStart;
         const text = contentTextarea.value;
         const lineStart = text.lastIndexOf('\n', start - 1) + 1;
-        const lineText = text.substring(lineStart, start);
-        
-        if (lineText.startsWith('# ')) {
-            return; // Already a heading
-        }
-        
-        const newText = text.substring(0, lineStart) + '# ' + text.substring(lineStart);
+        const hashes = '#'.repeat(Math.min(Math.max(level,1),6)) + ' ';
+        const newText = text.substring(0, lineStart) + hashes + text.substring(lineStart);
         contentTextarea.value = newText;
+        const newPos = start + hashes.length;
         contentTextarea.focus();
-        contentTextarea.setSelectionRange(start + 2, start + 2);
-        
+        contentTextarea.setSelectionRange(newPos, newPos);
         autoResize();
+        const menu = document.getElementById('heading-menu');
+        if (menu) menu.classList.add('hidden');
     }
 
     function insertList() {
@@ -278,6 +365,88 @@
         autoResize();
     }
 
+    function insertNumberedList() {
+        const start = contentTextarea.selectionStart;
+        const text = contentTextarea.value;
+        const lineStart = text.lastIndexOf('\n', start - 1) + 1;
+        const newText = text.substring(0, lineStart) + '1. ' + text.substring(lineStart);
+        contentTextarea.value = newText;
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(start + 3, start + 3);
+        autoResize();
+    }
+
+    function insertChecklist() {
+        const start = contentTextarea.selectionStart;
+        const text = contentTextarea.value;
+        const lineStart = text.lastIndexOf('\n', start - 1) + 1;
+        const newText = text.substring(0, lineStart) + '- [ ] ' + text.substring(lineStart);
+        contentTextarea.value = newText;
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(start + 6, start + 6);
+        autoResize();
+    }
+
+    function insertBlockquote() {
+        const start = contentTextarea.selectionStart;
+        const text = contentTextarea.value;
+        const lineStart = text.lastIndexOf('\n', start - 1) + 1;
+        const newText = text.substring(0, lineStart) + '> ' + text.substring(lineStart);
+        contentTextarea.value = newText;
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(start + 2, start + 2);
+        autoResize();
+    }
+
+    function insertHr() {
+        const start = contentTextarea.selectionStart;
+        const text = contentTextarea.value;
+        const insert = '\n\n---\n\n';
+        const newText = text.substring(0, start) + insert + text.substring(start);
+        contentTextarea.value = newText;
+        const pos = start + insert.length;
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(pos, pos);
+        autoResize();
+    }
+
+    function insertCodeBlock() {
+        const start = contentTextarea.selectionStart;
+        const text = contentTextarea.value;
+        const insert = '\n```language\n// code\n```\n';
+        const newText = text.substring(0, start) + insert + text.substring(start);
+        contentTextarea.value = newText;
+        const pos = start + 4; // place cursor after first backticks
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(pos, pos);
+        autoResize();
+    }
+
+    function insertMermaid() {
+        const start = contentTextarea.selectionStart;
+        const text = contentTextarea.value;
+        const tpl = '\n```mermaid\nflowchart TD\n  A[Start] --> B{Decision}\n  B -- Yes --> C[Do thing]\n  B -- No  --> D[Something else]\n```\n';
+        const newText = text.substring(0, start) + tpl + text.substring(start);
+        contentTextarea.value = newText;
+        const pos = start + 4; // cursor after opening backticks
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(pos, pos);
+        autoResize();
+        renderPreview();
+    }
+
+    function insertTable() {
+        const start = contentTextarea.selectionStart;
+        const text = contentTextarea.value;
+        const tpl = '\n| Col 1 | Col 2 | Col 3 |\n|-------|-------|-------|\n|  A1   |  B1   |  C1   |\n|  A2   |  B2   |  C2   |\n';
+        const newText = text.substring(0, start) + tpl + text.substring(start);
+        contentTextarea.value = newText;
+        const pos = start + 3; // inside first cell
+        contentTextarea.focus();
+        contentTextarea.setSelectionRange(pos, pos);
+        autoResize();
+    }
+
     // Paste-to-upload image
     contentTextarea.addEventListener('paste', async function(e) {
         const items = (e.clipboardData || window.clipboardData).items || [];

web/templates/settings.html

@@ -12,22 +12,6 @@
 
     <!-- Settings Sections -->
     <div class="space-y-8">
-        <!-- Quick Actions -->
-        <div class="bg-gray-800 rounded-lg p-6">
-            <div class="flex items-center justify-between">
-                <div>
-                    <h2 class="text-xl font-semibold text-white mb-1">
-                        <i class="fas fa-tools mr-2"></i>Admin Tools
-                    </h2>
-                    <p class="text-gray-400">Access logs and security controls</p>
-                </div>
-                <div class="flex items-center gap-3">
-                    <a href="{{url "/editor/admin/logs"}}" target="_blank" class="btn-secondary inline-flex items-center">
-                        <i class="fas fa-list mr-2"></i>View Logs
-                    </a>
-                </div>
-            </div>
-        </div>
         <!-- Image Storage Settings -->
         <div class="bg-gray-800 rounded-lg p-6">
             <h2 class="text-xl font-semibold text-white mb-4">