docs: cierre formal de Sprint 1.5

- OBSERVATIONS.md reseteado para Sprint 2
- STRATEGIC_DIRECTION.md con reflexiones del sprint
- TECH_DEBT.md curado: items resueltos archivados
- methodology/CASE_STUDIES/inq-roi-sprint-1-5.md generado

Sprint 1.5 cerrado:
- 11 etapas + 1 fix pre-Etapa 11
- 526 unit tests + 38 E2E al cierre
- Producto con identidad InQ aplicada en web + 3 PDFs
- Metodología documentada con casos reales (2 de mala
  clasificación de iniciativa, originaron AP.8 +
  refinamiento C.6)
- Material para transmisión al equipo de 5 técnicos

tests/e2e/etapa-11-polish.spec.ts

@@ -0,0 +1,98 @@
+/**
+ * Etapa 11 Parte A — Genera el PDF ROI con los 4 refinamientos del polish final.
+ * Guarda en tests/e2e/__output__/etapa-11-roi.pdf para validación visual del director.
+ */
+import { test, expect } from '@playwright/test'
+import { resolve } from 'path'
+import { mkdirSync, readFileSync } from 'fs'
+import { fileURLToPath } from 'url'
+import { PDFParse } from 'pdf-parse'
+import { getDocument } from 'pdfjs-dist/legacy/build/pdf.mjs'
+
+const __dirname = fileURLToPath(new URL('.', import.meta.url))
+const BPMN_DIR = resolve(__dirname, '../../public/sample-processes')
+const OUT_DIR = resolve(__dirname, './__output__')
+
+test.beforeAll(() => { mkdirSync(OUT_DIR, { recursive: true }) })
+
+async function parsePdf(buffer: Buffer) {
+  const parser = new PDFParse({ data: buffer })
+  const result = await parser.getText()
+  await parser.destroy()
+  return { numpages: result.total, text: result.text }
+}
+
+async function getOrientations(buffer: Buffer): Promise<string[]> {
+  const uint8 = new Uint8Array(buffer)
+  const pdf = await getDocument({ data: uint8 }).promise
+  const out: string[] = []
+  for (let i = 1; i <= pdf.numPages; i++) {
+    const page = await pdf.getPage(i)
+    const vp = page.getViewport({ scale: 1 })
+    out.push(vp.width > vp.height ? 'landscape' : 'portrait')
+  }
+  return out
+}
+
+test('etapa-11-roi.pdf — polish final página 1 ROI', async ({ page }) => {
+  await page.goto('/')
+  await page.locator('#bpmn-file-input').setInputFiles(resolve(BPMN_DIR, 'medium-with-gateways.bpmn'))
+  await page.waitForURL(/\/workspace\//, { timeout: 15_000 })
+  await page.waitForSelector('button:has-text("Simular")', { timeout: 10_000 })
+  await page.waitForTimeout(800)
+
+  for (const [id, cost, auto] of [
+    ['task_recv', 200, 20], ['task_score', 200, 20], ['task_analisis', 200, 20]
+  ] as [string, number, number][]) {
+    await page.locator(`[data-element-id="${id}"]`).first().click()
+    await page.waitForTimeout(400)
+    const toggle = page.getByRole('switch', { name: /automatizable/i })
+    if (await toggle.getAttribute('aria-checked') === 'false') await toggle.click()
+    await page.waitForTimeout(200)
+    await page.getByLabel(/Costo directo fijo/i).fill(String(cost))
+    await page.getByLabel(/Costo automatizado/i).fill(String(auto))
+    await page.getByLabel(/Tiempo automatizado/i).fill('10')
+    await page.getByRole('button', { name: /Guardar/i }).click()
+    await page.waitForTimeout(400)
+  }
+
+  await page.getByRole('tab', { name: /Global/i }).click()
+  await page.waitForTimeout(300)
+  await page.getByLabel(/Frecuencia anual/i).fill('5000')
+  await page.getByLabel(/Inversión en automatización/i).fill('80000')
+  await page.getByRole('button', { name: /Guardar/i }).click()
+  await page.waitForTimeout(400)
+
+  await page.getByRole('button', { name: 'Simular' }).click()
+  await page.waitForURL(/\/report\//, { timeout: 20_000 })
+  await page.waitForSelector('button:has-text("Exportar PDF")', { timeout: 15_000 })
+  await page.waitForSelector('.bpmn-container .djs-group', { timeout: 30_000 })
+  await page.waitForTimeout(800)
+
+  await page.getByRole('tab', { name: /Comparación/i }).click()
+  await page.waitForSelector('[data-testid="roi-kpi-card"]', { timeout: 10_000 })
+  await page.waitForTimeout(500)
+
+  const outPath = resolve(OUT_DIR, 'etapa-11-roi.pdf')
+  const [download] = await Promise.all([
+    page.waitForEvent('download', { timeout: 30_000 }),
+    page.getByRole('button', { name: 'Exportar PDF' }).click(),
+  ])
+  await download.saveAs(outPath)
+
+  const buffer = readFileSync(outPath)
+  const sizeKB = (buffer.length / 1024).toFixed(1)
+  const { numpages, text } = await parsePdf(buffer)
+  const orientations = await getOrientations(buffer)
+
+  console.log(`etapa-11-roi.pdf: ${numpages} págs, ${sizeKB} KB`)
+  console.log(`Texto p.1 (500 chars): ${text.slice(0, 500).replace(/\n/g, ' ')}`)
+  console.log(`Orientaciones: ${orientations.join(', ')}`)
+
+  expect(numpages).toBe(5)
+  expect(orientations).toEqual(['portrait', 'portrait', 'portrait', 'portrait', 'portrait'])
+  expect(text).toMatch(/AHORRO PROYECTADO A/)
+  expect(text).toMatch(/TOP 3 ACTIVIDADES POR AHORRO/)
+  expect(text).toMatch(/InQ ROI/)
+  expect(text).toMatch(/Powered by InQuality/)
+})