Drop the rule that left starting dev servers to the user

user/agents/skills/prototype/SKILL.md

@@ -40,16 +40,14 @@ an implementation with extra steps.
    routing and file conventions; invent no new top-level structure.
 2. **Trivial to run.** A UI prototype is one URL. A logic demo is one file that opens on a
    double-click. No thinking required to start it.
-3. **Do not start a dev server yourself.** Assume one may already be running. Where the prototype
-   needs a server that is not up, or needs a restart, ask rather than starting it.
-4. **No persistence by default.** State lives in memory. Persistence is usually the thing being
+3. **No persistence by default.** State lives in memory. Persistence is usually the thing being
    *checked*, not something to depend on. Where the question genuinely involves the database, point
    at a scratch one named so nobody mistakes it.
-5. **Skip the polish.** No tests, no error handling beyond what makes it run, no abstractions. A
+4. **Skip the polish.** No tests, no error handling beyond what makes it run, no abstractions. A
    prototype that needs tests has stopped being a prototype.
-6. **Surface the state.** After every action, or on every variant switch, render the full relevant
+5. **Surface the state.** After every action, or on every variant switch, render the full relevant
    state so the change is visible.
-7. **Answer one question.** No "what if we also wanted X later".
+6. **Answer one question.** No "what if we also wanted X later".
 
 ## Capture it when the answer arrives