feat: rename keep-notes to memento-note, migrate to PostgreSQL, fix MCP bugs

- Rename directory keep-notes -> memento-note with all code references
- Prisma: SQLite -> PostgreSQL (both app and MCP server schemas)
- Sync MCP schema with main app (add missing fields, relations, indexes)
- Delete 17 SQLite migrations (clean slate for PostgreSQL)
- Remove SQLite dependencies (@libsql/client, better-sqlite3, etc.)
- Fix MCP server: hardcoded Windows DB paths -> DATABASE_URL env var
- Fix MCP server: .dockerignore excluded index-sse.js (SSE mode broken)
- MCP Dockerfile: node:20 -> node:22
- Docker Compose: add postgres service, remove SQLite volume
- Generate favicon.ico, icon-192.png, icon-512.png, apple-icon.png
- Update layout.tsx icons and manifest.json for PNG icons
- Update all .env files for PostgreSQL
- Rewrite README.md with updated sections
- Remove mcp-server/node_modules and prisma/client-generated from git tracking

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

memento-note/app/actions/ollama.ts

@@ -0,0 +1,57 @@
+'use server'
+
+interface OllamaModel {
+    name: string
+    modified_at: string
+    size: number
+    digest: string
+    details: {
+        format: string
+        family: string
+        families: string[]
+        parameter_size: string
+        quantization_level: string
+    }
+}
+
+interface OllamaTagsResponse {
+    models: OllamaModel[]
+}
+
+export async function getOllamaModels(baseUrl: string): Promise<{ success: boolean; models: string[]; error?: string }> {
+    if (!baseUrl) {
+        return { success: false, models: [], error: 'Base URL is required' }
+    }
+
+    // Ensure URL doesn't end with slash
+    const cleanUrl = baseUrl.replace(/\/$/, '')
+
+    try {
+        const response = await fetch(`${cleanUrl}/api/tags`, {
+            method: 'GET',
+            headers: {
+                'Content-Type': 'application/json',
+            },
+            // Set a reasonable timeout
+            signal: AbortSignal.timeout(5000)
+        })
+
+        if (!response.ok) {
+            throw new Error(`Ollama API returned ${response.status}: ${response.statusText}`)
+        }
+
+        const data = await response.json() as OllamaTagsResponse
+
+        // Extract model names
+        const modelNames = data.models?.map(m => m.name) || []
+
+        return { success: true, models: modelNames }
+    } catch (error: any) {
+        console.error('Failed to fetch Ollama models:', error)
+        return {
+            success: false,
+            models: [],
+            error: error.message || 'Failed to connect to Ollama'
+        }
+    }
+}