fix: MCP server Docker deployment, healthchecks, and minor fixes

MCP server:
- Fix Prisma imports from stale client-generated path to @prisma/client
- Switch schema from SQLite to PostgreSQL for Docker compatibility
- Add prisma generate step to Dockerfile with proper binaryTargets
- Include index-sse.js in Docker build (was excluded by .dockerignore)
- Install openssl and libc6-compat in Alpine image for Prisma runtime

Docker:
- Fix memento-note healthcheck (wget unavailable in bullseye-slim)

Minor fixes:
- scrape.service SSRF protection, middleware route coverage
- canvas-board and note-input type fixes
- next.config turbopack and devIndicators adjustments

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

memento-note/lib/ai/services/scrape.service.ts

@@ -50,12 +50,12 @@ export class ScrapeService {
       }
 
       return {
-        title: article.title,
-        content: article.content, // HTML fragment from readability
-        textContent: article.textContent, // Clean text
-        excerpt: article.excerpt,
-        byline: article.byline,
-        siteName: article.siteName,
+        title: article.title ?? '',
+        content: article.content ?? '', // HTML fragment from readability
+        textContent: article.textContent ?? '', // Clean text
+        excerpt: article.excerpt ?? '',
+        byline: article.byline ?? '',
+        siteName: article.siteName ?? '',
         url: targetUrl
       }
     } catch (error) {