feat: complete marketing command center with pipeline, UI, and asset generation

- Dashboard with campaign management, asset gallery, and publishing queue
- 7-agent pipeline: trend scout, research, scripts, ad creative, video, copy, distribution
- Campaign form with screenshot upload, goal picker, platform selection
- Campaign detail view with Details/Pipeline/Assets/Chat tabs
- Two-set image generation: Gemini AI (NanoBanana MCP) + Canvas Design posters
- Remotion video rendering with phone.png frame and real screenshot alignment
- honeyDue branding: blue #0079FF, orange #FF9400, Inter font, warm off-white
- Asset cards with source badges (Gemini/Canvas/Remotion/Playwright)
- Markdown/JSON render endpoint for viewing pipeline outputs as HTML
- Settings page with Tavily, Gemini, Postiz, Nextdoor integration management
- Claude Chat for campaign feedback loop with streaming SSE
- Postiz publishing modal with scheduling
- Auth with NextAuth credentials + JWT sessions
- SQLite via Prisma with better-sqlite3 adapter

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

pipeline/knowledge/platform_guidelines.md

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+# Platform Guidelines
+
+## 1. Platform Overview
+| Platform | Content Type | Primary Tone | Hashtags |
+|----------|-------------|--------------|----------|
+| Instagram | Feed posts, Stories, Reels | Polished, aspirational | Required (3-5) |
+| TikTok | Short video ads | Raw, authentic, trend-driven | Required (3-5 trending) |
+| Nextdoor | Neighborhood posts, display ads | Warm, local, neighborly | None |
+
+## 2. Instagram
+### Specs
+| Format | Dimensions | Aspect Ratio |
+|--------|-----------|--------------|
+| Feed Post | 1080x1080 px | 1:1 |
+| Story/Reel | 1080x1920 px | 9:16 |
+
+### Caption Guidelines
+- Hook in first line (before "more" truncation)
+- Structure: Hook → Value → CTA → line break → Hashtags
+- Max 2200 chars, aim for 150-300
+
+## 3. TikTok
+### Specs
+| Format | Dimensions | Length |
+|--------|-----------|--------|
+| Video Ad | 1080x1920 px (9:16) | 9-15s sweet spot |
+
+### Style Rules
+- Raw, authentic feel (not polished brand ads)
+- Bold text overlays, max 6 words per frame
+- Hook in first 1-2 seconds
+- Trending sounds when possible
+
+## 4. Nextdoor
+### Specs
+| Format | Dimensions |
+|--------|-----------|
+| Spotlight Ad | 1200x1200 px |
+| Display Ad | 1200x628 px |
+
+### Style Rules
+- Warm, community-focused tone
+- No hashtags
+- Reference local/neighborhood context
+- CTA: "Learn More" or "Visit Us"