chore: initial project setup with MCP server configs

- Add MCP servers for Redmine, Jenkins, Gitea, Obsidian
- Add setup_mcp.sh to generate .mcp.json from .env (no secrets in VCS)
- Add .env.example with required variable names for team onboarding
- Add .gitignore to exclude secrets (.env, .mcp.json, settings.local.json)
- Fix obsidian_mcp_server.py stdio_server async context manager usage

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

add_obsidian_mcp.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+claude mcp add-json obsidian '{
+  "type": "stdio",
+  "command": "python3",
+  "args": ["/Users/joungmin/claude/obsidian_mcp_server.py"],
+  "env": {
+    "OBSIDIAN_VAULT": "/Users/joungmin/Documents/Obsidian Vault"
+  }
+}' --scope project