feat: add firefly-iii-mcp and paperless-mcp MCP servers

- Added firefly-iii-mcp (v1.3.0) for personal finance management
  - Uses npm package @firefly-iii-mcp/local instead of source build
  - Requires FIREFLY_III_BASE_URL and FIREFLY_III_PAT env vars
- Added paperless-mcp (v1.0.0) for document management
  - Requires PAPERLESS_URL and PAPERLESS_TOKEN CLI args
- Created wrapper scripts for Crush integration
- Updated docker-compose.yml with new services
- Updated .env.example with required environment variables
- Added Financial & Budgeting category to README.md

Both servers validated with MCP protocol handshake.

Working MCP servers count: 27

💘 Generated with Crush

Assisted-by: GLM-5 via Crush <crush@charm.land>

.env.example

@@ -84,3 +84,17 @@ DRAWIO_URL=https://app.diagrams.net
 # Penpot (default URL in compose)
 PENPOT_URL=https://design.penpot.app
 PENPOT_TOKEN=dummy-penpot-token-replace-with-real
+
+# Firefly III
+FIREFLY_III_BASE_URL=https://firefly.example.com
+FIREFLY_III_PAT=dummy-personal-access-token-replace-with-real
+FIREFLY_III_PRESET=default
+
+# Paperless-NGX
+PAPERLESS_URL=https://paperless.example.com
+PAPERLESS_TOKEN=dummy-paperless-token-replace-with-real
+
+# Actual Budget
+ACTUAL_SERVER_URL=https://actual.example.com
+ACTUAL_PASSWORD=dummy-password-replace-with-real
+ACTUAL_BUDGET_SYNC_ID=dummy-budget-sync-id