chore: update skill creator (#1431)

resources/example-skills/pptx/editing.md

@@ -28,14 +28,14 @@ When using an existing presentation as a template:
 
 3. **Unpack**: `python scripts/office/unpack.py template.pptx unpacked/`
 
-4. **Build presentation** (do this yourself, not with subagents):
+4. **Build presentation:**
    - Delete unwanted slides (remove from `<p:sldIdLst>`)
    - Duplicate slides you want to reuse (`add_slide.py`)
    - Reorder slides in `<p:sldIdLst>`
    - **Complete all structural changes before step 5**
 
 5. **Edit content**: Update text in each `slide{N}.xml`.
-   **Use subagents here if available** — slides are separate XML files, so subagents can edit in parallel.
+   — slides are separate XML files.
 
 6. **Clean**: `python scripts/clean.py unpacked/`
 
@@ -112,16 +112,6 @@ Slide order is in `ppt/presentation.xml` → `<p:sldIdLst>`.
 
 ## Editing Content
 
-**Subagents:** If available, use them here (after completing step 4). Each slide is a separate XML file, so subagents can edit in parallel. In your prompt to subagents, include:
-- The slide file path(s) to edit
-- **"Use the Edit tool for all changes"**
-- The formatting rules and common pitfalls below
-
-For each slide:
-1. Read the slide's XML
-2. Identify ALL placeholder content—text, images, charts, icons, captions
-3. Replace each placeholder with final content
-
 **Use the Edit tool, not sed or Python scripts.** The Edit tool forces specificity about what to replace and where, yielding better reliability.
 
 ### Formatting Rules