chore: migrate global agent rules into repository and update deployment scripts

agent-rules/nvim_mcp_enforcement.md

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+# Neovim MCP Enforcement Rule
+
+When interacting with the user's Neovim editor (e.g., opening a file, moving the cursor, reading the active buffer, setting diagnostics), you MUST ALWAYS use the MCP tools provided by the `linux-nvim` (WSL/Linux) or `win-nvim` (Windows) MCP servers. 
+
+- You are strictly forbidden from using bash scripts, `nvim --server`, or other raw terminal/shell hacks to remote-control Neovim.
+- You must rely entirely on the MCP tool registry (e.g., `nvim_goto_line`, `nvim_get_active_buffer`, `nvim_get_cursor`, `nvim_get_visual_selection`, `nvim_set_diagnostics`).
+- If the tool is eagerly loaded, use it natively as an agent tool. If lazy-loaded, invoke it via the `call_mcp_tool` mechanism.