Fix design-build output: use ./designs/ (per-project) instead of hardcoded path

skills/design-build/SKILL.md

@@ -77,10 +77,10 @@ Be specific in the agent prompt about what file to create. The agent should:
 
 ### Step 5: Save the output
 
-Create an output directory and save:
+Create an output directory in the current project and save:
 
 ```bash
-mkdir -p /home/sam/chats/sys_config/docker/penpot_designs/<project-name>
+mkdir -p ./designs/<project-name>
 ```
 
 Write the generated code to `index.html` in that directory.
@@ -88,16 +88,16 @@ Write the generated code to `index.html` in that directory.
 Also save a `README.md` with:
 - The original design spec
 - The DESIGN.md URL used
-- How to preview: `cd <dir> && python3 -m http.server 3000`
+- How to preview: `cd ./designs/<project-name> && python3 -m http.server 3000`
 
 ### Step 6: Show the result
 
 Tell the user:
 ```
-Code generated → /home/sam/chats/sys_config/docker/penpot_designs/<project>/index.html
+Code generated → ./designs/<project>/index.html
 
 To preview:
-  cd /home/sam/chats/sys_config/docker/penpot_designs/<project>/
+  cd ./designs/<project>/
   python3 -m http.server 3000
   → Open http://localhost:3000
 
@@ -120,9 +120,9 @@ Same format as design-explore. See `~/.agents/skills/design-explore/SKILL.md` fo
 
 ## Output Location
 
-All generated projects go to:
+All generated projects go to the current working directory:
 ```
-/home/sam/chats/sys_config/docker/penpot_designs/<project-name>/
+./designs/<project-name>/
 ```
 
-This keeps designs organized and previewable. Create the parent directory if it doesn't exist.
+This keeps designs with the project — they can be rsync'd to servers, committed to git, or referenced by other tools. The parent `./designs/` directory is created if it doesn't exist.