Modernize frontend with tabs, HTMX, and Tailwind build pipeline

Complete UI overhaul implementing modern design patterns with HTMX for
dynamic updates, proper Tailwind build pipeline, and improved UX.

Build Pipeline:
- Add npm + PostCSS + Tailwind CSS configuration
- Custom design system with brand colors
- Compiled CSS: 27KB (vs 3MB CDN), 99% reduction
- Makefile for unified build commands
- Inter font for improved typography

Tab Interface:
- Separate Tasks tab from Notes tab using HTMX
- Partial page updates without full refreshes
- Tab state management with proper refresh handling
- New endpoints: /tabs/tasks, /tabs/notes, /tabs/refresh

Template Architecture:
- Modular partials system (7 reusable components)
- Cleaner separation of concerns

Empty Board Management:
- Active boards in main 3-column grid
- Empty boards in collapsible section
- Reduces visual clutter

Visual Design Enhancements:
- Inter font, brand color accents
- Improved typography hierarchy and spacing
- Enhanced card styling with hover effects

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/web/templates/partials/obsidian-notes.html b/web/templates/partials/obsidian-notes.html
new file mode 100644
index 0000000..268a0fe
--- /dev/null
+++ b/web/templates/partials/obsidian-notes.html
@@ -0,0 +1,30 @@
+{{define "obsidian-notes"}}
+{{if .Notes}}
+<section class="section-spacing">
+    <!-- Section Header with Brand Color -->
+    <div class="flex items-center gap-3 mb-6">
+        <div class="w-1 h-8 bg-obsidian rounded"></div>
+        <h2 class="text-2xl font-bold text-gray-900">Recent Notes</h2>
+    </div>
+
+    <div class="card-grid">
+        {{range .Notes}}
+        <div class="note-card">
+            <h3 class="font-semibold text-gray-900 mb-2">{{.Title}}</h3>
+            <p class="text-sm text-gray-600 mb-3 line-clamp-3">{{.Content}}</p>
+            <div class="flex justify-between items-center text-xs">
+                <span class="text-gray-500">{{.Modified.Format "Jan 2, 3:04 PM"}}</span>
+                {{if .Tags}}
+                <div class="flex gap-1 flex-wrap">
+                    {{range .Tags}}
+                    <span class="badge bg-purple-100 text-purple-800">#{{.}}</span>
+                    {{end}}
+                </div>
+                {{end}}
+            </div>
+        </div>
+        {{end}}
+    </div>
+</section>
+{{end}}
+{{end}}