fix: refine presentation slides 2, 5 and 7

scripts/presentation.test.mjs

@@ -14,6 +14,26 @@ test('deck preserves assignment coverage, 35+15 timing and traceable notes',()=>
  for(const id of ['experiment']) assert.match(slides.find(s=>s.id===id).body,/fictional/i);
  assert.match(slides.find(s=>s.id==='qualification').notes,/separately authorizes/);
 });
+test('starting point keeps content without the two removed headings',()=>{
+ const body=slides.find(s=>s.id==='starting-point').body;
+ assert.doesNotMatch(body,/Assignment facts|Unknown until discovery/);
+ for(const text of ['Solo architect → CTO','No formal authority over teams','Stack, tools, process, baselines','Capacity and actual bottlenecks'])assert(body.includes(text));
+ assert.doesNotMatch(body,/<p><br>/);
+});
+test('contributors explains human-controlled AI tools below the diagram',()=>{
+ const body=slides.find(s=>s.id==='contributors').body;
+ const definition='AI Agent = Claude, Cline, ChatGPT or a similar tool, used under human control.';
+ assert(body.includes(definition));
+ assert(body.indexOf(definition)>body.indexOf('contribution-grid'));
+ assert(body.includes('Dashed ⇢ contribution from outside the cycle.'));
+});
+test('learning loop staircase preserves the original semantic sequence',()=>{
+ const body=slides.find(s=>s.id==='learning-loop').body;
+ const loop=body.split('</div>')[0];
+ assert.deepEqual([...loop.matchAll(/<span>(.*?)<\/span>/g)].map(m=>m[1]),['Understand work','Measure + baseline','Engineer topology','Use in real work','Collect results','Reassess']);
+ assert.deepEqual([...loop.matchAll(/<i>(.*?)<\/i>/g)].map(m=>m[1]),['→','↓','→','↓','→']);
+ assert(body.includes('↻ Repeat within each phase.'));
+});
 test('build emits local pinned Reveal assets, stable IDs and no production CDN',()=>{
  execFileSync(process.execPath,['scripts/build-presentations.mjs']);
  const dir='static/presentations/less-prompting-more-shipping'; const html=read(`${dir}/index.html`);