We split this copilot-instructions.md into the rules it gives an agent

4 rules. About 0 are common, 1 is distinctive, and 3 are very specific to this project.

• ≈0

  Common · estimate

  Many files like this have a rule of this kind.

• ≈1

  Distinctive · estimate

  This author's own choices. Worth a look.

• 3

  Very specific

  Tied to their project's names, files or tools. Probably skip.

• Common
• Distinctive
• Very specific

1. Very specific:

   Run tests with npm test. Run them after every code change.

   line 5
2. Very specific:

   Keep route handlers in src/app.js and helpers in src/utils.js.

   line 6
3. Distinctive:

   Do not add dependencies.

   line 8
4. Very specific:

   Test files use node:test and node:assert.

   line 9

≈ “Common” is an estimate: at least 1 in 5 of the 3,779 Copilot instructions files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.