Your instinct to keep this strictly UNIX-compliant is absolutely spot on.
If we jam the catalog.json into architect.js, we violate the Single
Responsibility Principle. The Architects job is to design the ideal system
based on pure logic. If it also has to manage inventory, its context window
will bloat, and it will start hallucinating compromised designs just to
force-fit existing tools.
In classic UNIX C programming, compilation happens in distinct phases:
 * The Preprocessor (Our Analyst): Cleans up the macros/ideas.
 * The Compiler (Our Architect): Generates the ideal intermediate
representation (AST-MD).
 * The Linker: Connects the intermediate code to the Standard Library.
We need to build a Linker.
The Linker Architecture (linker.js)
Here is how a UNIX-philosophy linker.js script will sit in your pipeline:
 * Input: It reads the raw .ast-md output from the Architect via stdin.
 * Context: It reads the catalog.json from the local file system.
 * Analysis (The Mesh): It sends both to your local Gemma mesh with a prompt
like: "Here is the ideal DAG. Here is our Library. Do any of the requested
nodes match the capabilities of our existing library nodes? If so, return a
mapping."
 * Output: It rewrites the .ast-md stream to stdout. If a match is found, it
updates the node's name to match the library, changes the provider to >
provider: library, and patches any dependencies that pointed to the old name.
The Pipeline Flow
Once implemented, your entire OS software factory will execute in a single,
beautiful bash pipeline:
cat idea.txt | node analyst.js | node architect.js | node linker.js >
build.ast-md
node index.js build.ast-md

The Orchestrator Upgrade
To make this work, we only need to make one tiny tweak to your Orchestrator
(index.js).
When it calculates the build order and sees > provider: library, it simply
needs to copy the file from ./library/MODULE.js into ./build/MODULE.js instead
of sending a prompt to DeepSeek.