I am looking for a single word or a phrase that can effectively describe:
the start to end, from-the-ground-up, development of something new.
That is, the process of coming up with the idea, designing an actual product and building it.
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You already have the official term for that: New product development.
In business and engineering, new product development (NPD) is the complete process of bringing a new product to market … the idea generation, product design and detail engineering …
See also on the same page, The Eight Stages: Idea Generation, Idea Screening, Concept Development & Testing, Business Analysis, Beta Testing & Market Testing, Technical Implementation, Commercialization, Pricing.
Further Reading: entrepreneur.com
The sequence of industrial, administrative, or other processes through which a piece of work passes from initiation to completion.
It sounds quite similar to your description.
"The workflow of creating the end product began at idea generation, describe .. dadida .. and culminated in the manufacturing of this wonderful [object everybody will want]."
You might say 'complete' or a synonym thereof. Here are some example phrases:
- Here at the job-lot construction company we do the whole shebang.
- We offer a total development service.
- Your request is so unique we're going to have to do it all from scratch.
- I was really pleased with their work, they gave it the full-treatment.
A set of relevant terms use the root "cycle":
Wikipedia seems to prefer product lifecycle management (PLM):
In industry, product lifecycle management (PLM) is the process of managing the entire lifecycle of a product from inception, through engineering design and manufacture, to service and disposal of manufactured products. PLM integrates people, data, processes and business systems and provides a product information backbone for companies and their extended enterprise.
If you need keep the character count low, an industry standard term would be "PLM" for the hands-on management; otherwise I suggest "lifecycle" for the description of the process itself.