noop-overlay

# noop-overlay (fixture) This skill exists to demonstrate the IDT overlay discovery contract end-to-end without changing the output of any IDT command. It is intentionally trivial. ## Behavior When invoked by the IDT runtime per `assets/runtime/overlay-protocol.md`: 1. Receive an `OverlayInput` (`{ command, baseDraft, context }`). 2. Return an `OverlayOutput`: - `draft`: the **same** `baseDraft` value, deep-copied to make the no-mutation contract obvious. Any future change you make to the returned object MUST NOT touch Layer 1 immutable fields (see the protocol doc). - `warnings`: a single demonstration entry — `"noop-overlay invoked at priority 75; no transforms applied."` — so observers can confirm discovery fired without affecting content. ## Why frontmatter looks like this | Field | Value | Why | |---|---|---| | `overlay_target` | `new-course`, `course-audit`, `slides-preview` | The three IDT commands wired in DOJ-3707 (Phase 1). Listing all three lets fixture consumers pick any of them when running the simulation. | | `overlay_priority` | `75` | Generic tier (annotation-only). Sits between structural (50) and voice (100). For a true no-op, the value barely matters — but choosing 75 makes the fixture useful for ordering tests where structural/voice overlays exist alongside it. | ## How to use as a fixture From a fresh sandbox directory: ```bash mkdir -p sandbox && cd sandbox cp -R /path/to/instructional-design-toolkit/examples/overlay-noop-example/. . # Now sandbox/.claude-plugin/plugin.json + sandbox/skills/noop-overlay/SKILL.md exist. # Run any IDT command from inside sandbox/: # /idt:new-course "Test Course" # /idt:course-audit some-existing-course # /idt:slides-preview some-existing-course # Discovery should pick up noop-overlay; the user-facing response should # include the demonstration warning above; the resulting course.json should # be byte-identical to the run made from a directory with no overlays. ``` ## Out of scope for this fixture - Real transforms. See `dojo-academy/skills/academy-philosophy` and `dojo-academy/skills/content-standards` (DOJ-3710) for production overlay examples. - Any kind of test runner. This is a fixture, not a test suite.