chore(cleanup): remove legacy aliases and cruft from codebase, docs, and tests

gemini-integration.lua

@@ -10,18 +10,6 @@ vim.api.nvim_create_autocmd({"VimEnter", "FocusGained", "BufEnter", "BufWritePos
         if #vim.api.nvim_list_uis() > 0 then
             local server_name = vim.v.servername
             if server_name then
-                -- 1. Legacy Disk Write (Fallback)
-                local home = os.getenv("HOME") or os.getenv("USERPROFILE")
-                if home then
-                    os.execute("mkdir -p " .. home .. "/.gemini")
-                    local path = home .. "/.gemini/active_nvim.txt"
-                    local f = io.open(path, "w")
-                    if f then
-                        f:write(server_name)
-                        f:close()
-                    end
-                end
-                
                 -- 2. V2 Telemetry Push (HTTP with Knowledge Projection + UDP Fast Mirror)
                 local file = vim.api.nvim_buf_get_name(0)
                 local cursor = vim.api.nvim_win_get_cursor(0)