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diff --git a/frontend/e2e/verify-fixes.spec.ts b/testing/subagent_generated/e2e/verify-fixes.spec.ts
similarity index 100%
rename from frontend/e2e/verify-fixes.spec.ts
rename to testing/subagent_generated/e2e/verify-fixes.spec.ts
diff --git a/testing/subagent_generated/playwright_debug.mjs b/testing/subagent_generated/playwright_debug.mjs
new file mode 100644
index 0000000..59521e7
--- /dev/null
+++ b/testing/subagent_generated/playwright_debug.mjs
@@ -0,0 +1,35 @@
+import { chromium } from 'playwright';
+
+const browser = await chromium.launch({ headless: true });
+const context = await browser.newContext({ viewport: { width: 1400, height: 900 } });
+const page = await context.newPage();
+
+import { mkdirSync } from 'fs';
+mkdirSync('C:/tmp/playwright_screenshots', { recursive: true });
+
+// Navigate to login
+await page.goto('http://localhost:3000/login');
+await page.waitForLoadState('networkidle');
+await page.screenshot({ path: 'C:/tmp/playwright_screenshots/login_page.png', fullPage: true });
+
+// Debug HTML form
+const formHTML = await page.locator('form').innerHTML().catch(() => 'no form found');
+console.log('Form HTML:', formHTML.substring(0, 1000));
+
+const allInputs = await page.locator('input').all();
+console.log('Inputs count:', allInputs.length);
+for (const input of allInputs) {
+  const name = await input.getAttribute('name');
+  const type = await input.getAttribute('type');
+  const placeholder = await input.getAttribute('placeholder');
+  console.log(`Input: name=${name}, type=${type}, placeholder=${placeholder}`);
+}
+
+const allButtons = await page.locator('button').all();
+for (const btn of allButtons) {
+  const text = await btn.textContent();
+  const type = await btn.getAttribute('type');
+  console.log(`Button: text="${text?.trim()}", type=${type}`);
+}
+
+await browser.close();
diff --git a/testing/subagent_generated/playwright_full_test.mjs b/testing/subagent_generated/playwright_full_test.mjs
new file mode 100644
index 0000000..f78db4e
--- /dev/null
+++ b/testing/subagent_generated/playwright_full_test.mjs
@@ -0,0 +1,58 @@
+import { chromium } from 'playwright';
+import { mkdirSync } from 'fs';
+
+const screenshotDir = 'C:/tmp/playwright_screenshots';
+mkdirSync(screenshotDir, { recursive: true });
+
+const browser = await chromium.launch({ headless: true });
+const context = await browser.newContext({ viewport: { width: 1400, height: 900 } });
+const page = await context.newPage();
+
+async function screenshot(name) {
+  const path = `${screenshotDir}/${name}.png`;
+  await page.screenshot({ path, fullPage: true });
+  console.log(`  [Screenshot saved: ${name}.png]`);
+  return path;
+}
+
+console.log('\n=== Step 1: Navigate to /fertilizer/new ===');
+await page.goto('http://localhost:3000/fertilizer/new');
+await page.waitForLoadState('networkidle');
+console.log('URL:', page.url());
+
+if (page.url().includes('/login')) {
+  console.log('\n=== Step 2: Login ===');
+  // Use the id-based selectors since name attribute is null
+  await page.fill('#username', 'akira');
+  await page.fill('input[type="password"]', 'keina2025');
+  await screenshot('login_filled');
+  await page.click('button[type="submit"]');
+  await page.waitForNavigation({ timeout: 10000 }).catch(() => console.log('No navigation event'));
+  await page.waitForLoadState('networkidle');
+  console.log('After login URL:', page.url());
+  
+  // Navigate to fertilizer/new
+  await page.goto('http://localhost:3000/fertilizer/new');
+  await page.waitForLoadState('networkidle');
+  console.log('After redirect URL:', page.url());
+}
+
+await screenshot('step3_fertilizer_new');
+console.log('\n=== Step 3: Page content ===');
+const h1Text = await page.locator('h1, h2').first().textContent().catch(() => 'not found');
+console.log('Heading:', h1Text);
+
+// List all select elements
+const selects = await page.locator('select').all();
+console.log('Select elements:', selects.length);
+for (const sel of selects) {
+  const label = await sel.getAttribute('aria-label') || await sel.getAttribute('id') || 'no label';
+  const options = await sel.locator('option').allTextContents();
+  console.log(`  Select [${label}]: options = ${options.slice(0, 10).join(', ')}`);
+}
+
+// List all visible text to understand the page
+const allText = await page.locator('body').textContent();
+console.log('Page text (first 1000 chars):', allText?.substring(0, 1000));
+
+await browser.close();
diff --git a/testing/subagent_generated/playwright_full_test2.mjs b/testing/subagent_generated/playwright_full_test2.mjs
new file mode 100644
index 0000000..4f178e3
--- /dev/null
+++ b/testing/subagent_generated/playwright_full_test2.mjs
@@ -0,0 +1,76 @@
+import { chromium } from 'playwright';
+import { mkdirSync } from 'fs';
+
+const screenshotDir = 'C:/tmp/playwright_screenshots';
+mkdirSync(screenshotDir, { recursive: true });
+
+const browser = await chromium.launch({ headless: true });
+const context = await browser.newContext({ viewport: { width: 1400, height: 900 } });
+const page = await context.newPage();
+
+async function screenshot(name) {
+  const path = `${screenshotDir}/${name}.png`;
+  await page.screenshot({ path, fullPage: false });
+  console.log(`  [Screenshot: ${name}.png]`);
+}
+
+// Login
+await page.goto('http://localhost:3000/fertilizer/new');
+await page.waitForLoadState('networkidle');
+if (page.url().includes('/login')) {
+  await page.fill('#username', 'akira');
+  await page.fill('input[type="password"]', 'keina2025');
+  await page.click('button[type="submit"]');
+  await page.waitForNavigation({ timeout: 10000 }).catch(() => {});
+  await page.waitForLoadState('networkidle');
+  await page.goto('http://localhost:3000/fertilizer/new');
+  await page.waitForLoadState('networkidle');
+}
+
+// Step 3: Select にこまる
+console.log('\n=== Step 3: Select 品種 "にこまる" ===');
+const selects = await page.locator('select').all();
+await selects[1].selectOption({ label: 'にこまる' });
+await page.waitForTimeout(1500);
+await screenshot('step3_nikkomaru_selected');
+console.log('Selected にこまる - 15 fields auto-added');
+
+// Step 4: Click + 肥料を追加 button
+console.log('\n=== Step 4: Click "+ 肥料を追加" ===');
+const addBtn = page.locator('button').filter({ hasText: '肥料を追加' }).first();
+await addBtn.click();
+await page.waitForTimeout(500);
+
+// Modal appeared - click グアノ
+console.log('  Modal open - clicking グアノ...');
+const guanoItem = page.locator('text=グアノ').first();
+await guanoItem.click();
+await page.waitForTimeout(1500);
+await screenshot('step4_guano_added');
+
+// Check what appeared on the page
+const pageText = await page.locator('body').textContent();
+const cleanText = pageText?.replace(/\s+/g, ' ');
+const relevantPart = cleanText?.match(/自動計算設定.{0,500}/)?.[0] || cleanText?.substring(0, 600);
+console.log('After グアノ added:', relevantPart);
+
+// Find the param input for グアノ
+console.log('\n=== Checking fertilizer section structure ===');
+const fertSection = page.locator('[class*="fertilizer"], [class*="Fertilizer"]').first();
+const fertHTML = await page.locator('body').innerHTML();
+// Look for the input near グアノ
+const inputs = await page.locator('input[type="number"], input[type="text"]').all();
+console.log('Number of inputs:', inputs.length);
+for (let i = 0; i < inputs.length; i++) {
+  const val = await inputs[i].inputValue();
+  const placeholder = await inputs[i].getAttribute('placeholder');
+  const type = await inputs[i].getAttribute('type');
+  console.log(`  Input[${i}]: value="${val}", placeholder="${placeholder}", type="${type}"`);
+}
+
+// Look for 計算 button
+const calcButton = page.locator('button').filter({ hasText: '計算' });
+const calcVisible = await calcButton.isVisible();
+console.log('計算 button visible:', calcVisible);
+
+await browser.close();
diff --git a/testing/subagent_generated/playwright_full_test3.mjs b/testing/subagent_generated/playwright_full_test3.mjs
new file mode 100644
index 0000000..6210927
--- /dev/null
+++ b/testing/subagent_generated/playwright_full_test3.mjs
@@ -0,0 +1,89 @@
+import { chromium } from 'playwright';
+import { mkdirSync } from 'fs';
+
+const screenshotDir = 'C:/tmp/playwright_screenshots';
+mkdirSync(screenshotDir, { recursive: true });
+
+const browser = await chromium.launch({ headless: true });
+const context = await browser.newContext({ viewport: { width: 1400, height: 900 } });
+const page = await context.newPage();
+
+async function screenshot(name) {
+  const path = `${screenshotDir}/${name}.png`;
+  await page.screenshot({ path, fullPage: false });
+  console.log(`  [Screenshot: ${name}.png]`);
+}
+
+// Login
+await page.goto('http://localhost:3000/fertilizer/new');
+await page.waitForLoadState('networkidle');
+if (page.url().includes('/login')) {
+  await page.fill('#username', 'akira');
+  await page.fill('input[type="password"]', 'keina2025');
+  await page.click('button[type="submit"]');
+  await page.waitForNavigation({ timeout: 10000 }).catch(() => {});
+  await page.waitForLoadState('networkidle');
+  await page.goto('http://localhost:3000/fertilizer/new');
+  await page.waitForLoadState('networkidle');
+}
+
+// Select にこまる
+const selects = await page.locator('select').all();
+await selects[1].selectOption({ label: 'にこまる' });
+await page.waitForTimeout(1000);
+
+// Click + 肥料を追加
+const addBtn = page.locator('button').filter({ hasText: '肥料を追加' }).first();
+await addBtn.click();
+await page.waitForTimeout(500);
+
+// Click グアノ in modal
+await page.locator('text=グアノ').first().click();
+await page.waitForTimeout(1000);
+
+// Step 5: Enter "3" in the param field and click 計算
+console.log('\n=== Step 5: Enter "3" in param field and click 計算 ===');
+
+// The first input with placeholder "値" is the param field
+const paramInput = page.locator('input[placeholder="値"]');
+const paramVisible = await paramInput.isVisible();
+console.log('Param input visible:', paramVisible);
+
+await paramInput.fill('3');
+await page.waitForTimeout(300);
+
+const calcBtn = page.locator('button').filter({ hasText: '計算' });
+await calcBtn.click();
+await page.waitForTimeout(1500);
+
+await screenshot('step5_after_calc');
+
+// Step 6: Check matrix cells - do they show decimal values in input fields?
+console.log('\n=== Step 6: Check matrix cell values BEFORE clicking ≈ ===');
+const allInputs = await page.locator('input[type="number"]').all();
+console.log('Number of number inputs:', allInputs.length);
+for (let i = 0; i < Math.min(allInputs.length, 20); i++) {
+  const val = await allInputs[i].inputValue();
+  const placeholder = await allInputs[i].getAttribute('placeholder');
+  console.log(`  Input[${i}]: value="${val}", placeholder="${placeholder}"`);
+}
+
+// Step 7: Find and examine the グアノ column header button (≈ button)
+console.log('\n=== Step 7: Find ≈ button in グアノ column header ===');
+// Look for buttons with ≈ or similar content
+const allButtons = await page.locator('button').all();
+console.log('Total buttons on page:', allButtons.length);
+for (let i = 0; i < allButtons.length; i++) {
+  const text = await allButtons[i].textContent();
+  const cls = await allButtons[i].getAttribute('class');
+  if (text && (text.includes('≈') || text.includes('↩') || text.includes('~') || text.trim().length <= 3)) {
+    console.log(`  Button[${i}]: text="${text?.trim()}", class="${cls?.substring(0, 100)}"`);
+  }
+}
+
+// Get page text in the グアノ column area
+const bodyText = await page.locator('body').textContent();
+const guanoSection = bodyText?.match(/グアノ.{0,300}/)?.[0];
+console.log('グアノ section text:', guanoSection);
+
+await browser.close();
diff --git a/testing/subagent_generated/playwright_full_test4.mjs b/testing/subagent_generated/playwright_full_test4.mjs
new file mode 100644
index 0000000..7062c8a
--- /dev/null
+++ b/testing/subagent_generated/playwright_full_test4.mjs
@@ -0,0 +1,146 @@
+import { chromium } from 'playwright';
+import { mkdirSync } from 'fs';
+
+const screenshotDir = 'C:/tmp/playwright_screenshots';
+mkdirSync(screenshotDir, { recursive: true });
+
+const browser = await chromium.launch({ headless: true });
+const context = await browser.newContext({ viewport: { width: 1400, height: 900 } });
+const page = await context.newPage();
+
+async function screenshot(name) {
+  const path = `${screenshotDir}/${name}.png`;
+  await page.screenshot({ path, fullPage: false });
+  console.log(`  [Screenshot: ${name}.png]`);
+}
+
+// Login
+await page.goto('http://localhost:3000/fertilizer/new');
+await page.waitForLoadState('networkidle');
+if (page.url().includes('/login')) {
+  await page.fill('#username', 'akira');
+  await page.fill('input[type="password"]', 'keina2025');
+  await page.click('button[type="submit"]');
+  await page.waitForNavigation({ timeout: 10000 }).catch(() => {});
+  await page.waitForLoadState('networkidle');
+  await page.goto('http://localhost:3000/fertilizer/new');
+  await page.waitForLoadState('networkidle');
+}
+
+// Setup: Select にこまる, add グアノ, enter 3 and calculate
+const selects = await page.locator('select').all();
+await selects[1].selectOption({ label: 'にこまる' });
+await page.waitForTimeout(1000);
+await page.locator('button').filter({ hasText: '肥料を追加' }).first().click();
+await page.waitForTimeout(500);
+await page.locator('text=グアノ').first().click();
+await page.waitForTimeout(1000);
+await page.locator('input[placeholder="値"]').fill('3');
+await page.locator('button').filter({ hasText: '計算' }).click();
+await page.waitForTimeout(1500);
+
+// Verify state before ≈ click
+console.log('\n=== BEFORE clicking ≈ ===');
+const inputsBefore = await page.locator('input[type="number"]').all();
+console.log('Matrix cell values (before ≈):');
+const valuesBefore = [];
+for (let i = 1; i < inputsBefore.length; i++) {
+  const val = await inputsBefore[i].inputValue();
+  valuesBefore.push(val);
+  console.log(`  Cell[${i}]: ${val}`);
+}
+
+// Check the ≈ button
+const approxBtn = page.locator('button', { hasText: '≈' });
+const approxBtnClass = await approxBtn.getAttribute('class');
+console.log('\n≈ button class:', approxBtnClass);
+const approxBtnText = await approxBtn.textContent();
+console.log('≈ button text:', approxBtnText?.trim());
+
+await screenshot('step6_before_approx_click');
+
+// Step 8: Click ≈ button
+console.log('\n=== Step 8: Click ≈ button ===');
+await approxBtn.click();
+await page.waitForTimeout(1500);
+
+await screenshot('step9_after_approx_click');
+
+// Step 9: Check values after ≈ click
+console.log('\n=== Step 9: Check values AFTER clicking ≈ ===');
+const inputsAfter = await page.locator('input[type="number"]').all();
+console.log('Matrix cell values (after ≈):');
+const valuesAfter = [];
+for (let i = 1; i < inputsAfter.length; i++) {
+  const val = await inputsAfter[i].inputValue();
+  valuesAfter.push(val);
+  console.log(`  Cell[${i}]: ${val}`);
+}
+
+// Check for reference values (gray text) - might be in span or other elements
+// Look for elements that show original calc values as reference
+const refValueElements = await page.locator('[class*="gray"], [class*="text-gray"], [class*="ref"]').all();
+console.log('\nLooking for reference value indicators...');
+
+// Check all visible text in the table area
+const tableText = await page.locator('table, [role="table"], .table-auto, [class*="table"]').first().textContent().catch(() => null);
+if (tableText) {
+  console.log('Table text:', tableText.replace(/\s+/g, ' ').substring(0, 500));
+} else {
+  // Try to get the section after the header
+  const bodyText = await page.locator('body').textContent();
+  const afterHeader = bodyText?.match(/圃場名.*面積.*グアノ.{0,1000}/s)?.[0];
+  console.log('Matrix section:', afterHeader?.replace(/\s+/g, ' ').substring(0, 500));
+}
+
+// Find the new button (should be ↩ now)
+const allButtonsAfter = await page.locator('button').all();
+console.log('\nLooking for ↩ button:');
+for (let i = 0; i < allButtonsAfter.length; i++) {
+  const text = await allButtonsAfter[i].textContent();
+  const cls = await allButtonsAfter[i].getAttribute('class');
+  if (text && text.trim().length <= 3 && text.trim() !== '') {
+    console.log(`  Button[${i}]: text="${text?.trim()}", class="${cls?.substring(0, 100)}"`);
+  }
+}
+
+// Step 10: Click ↩ button
+console.log('\n=== Step 10: Click ↩ button ===');
+const restoreBtn = page.locator('button').filter({ hasText: '↩' });
+const restoreBtnVisible = await restoreBtn.isVisible().catch(() => false);
+console.log('↩ button visible:', restoreBtnVisible);
+
+if (restoreBtnVisible) {
+  const restoreBtnClass = await restoreBtn.getAttribute('class');
+  console.log('↩ button class:', restoreBtnClass);
+  
+  await restoreBtn.click();
+  await page.waitForTimeout(1500);
+  
+  await screenshot('step11_after_restore');
+  
+  // Step 11: Check values restored
+  console.log('\n=== Step 11: Check values AFTER clicking ↩ ===');
+  const inputsRestored = await page.locator('input[type="number"]').all();
+  console.log('Matrix cell values (after ↩):');
+  for (let i = 1; i < inputsRestored.length; i++) {
+    const val = await inputsRestored[i].inputValue();
+    console.log(`  Cell[${i}]: ${val}`);
+  }
+  
+  // Check button is back to ≈
+  const approxBtnRestored = page.locator('button', { hasText: '≈' });
+  const approxVisible = await approxBtnRestored.isVisible().catch(() => false);
+  const approxClass = await approxBtnRestored.getAttribute('class').catch(() => null);
+  console.log('\n≈ button visible again:', approxVisible);
+  console.log('≈ button class:', approxClass);
+} else {
+  console.log('WARNING: ↩ button not found!');
+  // Print all button texts for debugging
+  for (let i = 0; i < allButtonsAfter.length; i++) {
+    const text = await allButtonsAfter[i].textContent();
+    console.log(`  Button[${i}]: "${text?.trim()}"`);
+  }
+}
+
+await browser.close();
diff --git a/testing/subagent_generated/playwright_test_temp.mjs b/testing/subagent_generated/playwright_test_temp.mjs
new file mode 100644
index 0000000..e5ce90a
--- /dev/null
+++ b/testing/subagent_generated/playwright_test_temp.mjs
@@ -0,0 +1,66 @@
+import { chromium } from 'playwright';
+
+const browser = await chromium.launch({ headless: true });
+const context = await browser.newContext({ viewport: { width: 1400, height: 900 } });
+const page = await context.newPage();
+
+const screenshotDir = 'C:/tmp/playwright_screenshots';
+// Create directory via node
+import { mkdirSync } from 'fs';
+mkdirSync(screenshotDir, { recursive: true });
+
+function screenshot(name) {
+  return page.screenshot({ path: `${screenshotDir}/${name}.png`, fullPage: true });
+}
+
+// Step 1: Navigate to fertilizer/new
+console.log('\n=== Step 1: Navigating to http://localhost:3000/fertilizer/new ===');
+await page.goto('http://localhost:3000/fertilizer/new');
+await page.waitForLoadState('networkidle');
+console.log('Current URL:', page.url());
+
+// Check if redirected to login
+if (page.url().includes('/login')) {
+  console.log('\n=== Step 2: Redirected to login, logging in... ===');
+  
+  // Find and fill login form
+  await page.waitForSelector('input', { timeout: 5000 });
+  const inputs = await page.locator('input').all();
+  console.log('Found inputs:', inputs.length);
+  
+  // Try different selectors for username/password
+  try {
+    await page.fill('input[name="username"]', 'akira');
+  } catch {
+    await page.fill('input[type="text"]:first-of-type', 'akira');
+  }
+  
+  try {
+    await page.fill('input[name="password"]', 'keina2025');
+  } catch {
+    await page.fill('input[type="password"]', 'keina2025');
+  }
+  
+  await screenshot('step2_login_form');
+  await page.click('button[type="submit"]');
+  await page.waitForLoadState('networkidle');
+  console.log('After login URL:', page.url());
+  
+  // Navigate to fertilizer/new after login
+  await page.goto('http://localhost:3000/fertilizer/new');
+  await page.waitForLoadState('networkidle');
+  console.log('After navigate URL:', page.url());
+}
+
+await screenshot('step3_fertilizer_new');
+console.log('\n=== Step 3: On fertilizer/new page ===');
+console.log('URL:', page.url());
+
+// Check page content
+const pageTitle = await page.title();
+console.log('Page title:', pageTitle);
+const bodyText = await page.locator('body').textContent();
+console.log('Body preview:', bodyText?.substring(0, 500));
+
+await browser.close();
+console.log('\nDone!');
diff --git a/testing/subagent_generated/playwright_ui_test.mjs b/testing/subagent_generated/playwright_ui_test.mjs
new file mode 100644
index 0000000..8a9de13
--- /dev/null
+++ b/testing/subagent_generated/playwright_ui_test.mjs
@@ -0,0 +1,97 @@
+import { chromium } from 'playwright';
+import { mkdirSync } from 'fs';
+
+const screenshotDir = 'C:/tmp/playwright_screenshots';
+mkdirSync(screenshotDir, { recursive: true });
+
+const browser = await chromium.launch({ headless: true });
+const context = await browser.newContext({ viewport: { width: 1400, height: 900 } });
+const page = await context.newPage();
+
+async function screenshot(name) {
+  const path = `${screenshotDir}/${name}.png`;
+  await page.screenshot({ path, fullPage: false });
+  console.log(`  [Screenshot: ${name}.png]`);
+}
+
+async function screenshotFull(name) {
+  const path = `${screenshotDir}/${name}.png`;
+  await page.screenshot({ path, fullPage: true });
+  console.log(`  [Screenshot (full): ${name}.png]`);
+}
+
+// Login flow
+console.log('\n=== Login ===');
+await page.goto('http://localhost:3000/fertilizer/new');
+await page.waitForLoadState('networkidle');
+if (page.url().includes('/login')) {
+  await page.fill('#username', 'akira');
+  await page.fill('input[type="password"]', 'keina2025');
+  await page.click('button[type="submit"]');
+  await page.waitForNavigation({ timeout: 10000 }).catch(() => {});
+  await page.waitForLoadState('networkidle');
+  await page.goto('http://localhost:3000/fertilizer/new');
+  await page.waitForLoadState('networkidle');
+}
+console.log('On page:', page.url());
+
+// Step 3: Select variety "にこまる"
+console.log('\n=== Step 3: Select 品種 "にこまる" ===');
+// Find the 品種 select (second select - first is year)
+const selects = await page.locator('select').all();
+console.log('Number of select elements:', selects.length);
+// The variety select should contain "にこまる"
+for (let i = 0; i < selects.length; i++) {
+  const options = await selects[i].locator('option').allTextContents();
+  console.log(`Select[${i}] options:`, options.join(', '));
+}
+
+// Select にこまる
+await selects[1].selectOption({ label: 'にこまる' });
+await page.waitForTimeout(2000); // Wait for any async updates
+await screenshotFull('step3_variety_selected');
+console.log('Selected にこまる');
+
+// Check if any fields were auto-added
+const allText = await page.locator('body').textContent();
+const relevantText = allText?.replace(/\s+/g, ' ').substring(0, 500);
+console.log('Page text after variety select:', relevantText);
+
+// Step 4: Add fertilizer by clicking "+ 肥料を追加"
+console.log('\n=== Step 4: Click "+ 肥料を追加" ===');
+// Find the button
+const addBtn = page.locator('button').filter({ hasText: '肥料を追加' }).first();
+const addBtnVisible = await addBtn.isVisible();
+console.log('Add fertilizer button visible:', addBtnVisible);
+
+if (addBtnVisible) {
+  await addBtn.click();
+  await page.waitForTimeout(1000);
+  await screenshotFull('step4_after_add_click');
+  
+  // Now we need to select "グアノ" from the new fertilizer row
+  const allText2 = await page.locator('body').textContent();
+  console.log('Page text after click:', allText2?.replace(/\s+/g, ' ').substring(0, 300));
+  
+  // Check for any new select/dropdown that appeared
+  const newSelects = await page.locator('select').all();
+  console.log('Selects after click:', newSelects.length);
+  
+  for (let i = 0; i < newSelects.length; i++) {
+    const options = await newSelects[i].locator('option').allTextContents();
+    if (options.some(o => o.includes('グアノ'))) {
+      console.log(`Found グアノ in select[${i}], selecting...`);
+      await newSelects[i].selectOption({ label: 'グアノ' });
+      break;
+    }
+  }
+}
+
+await page.waitForTimeout(2000);
+await screenshotFull('step4_guano_selected');
+
+// Check page state
+const pageBody = await page.locator('body').textContent();
+console.log('After グアノ selection:', pageBody?.replace(/\s+/g, ' ').substring(0, 500));
+
+await browser.close();
diff --git a/testing/subagent_generated/test-results/.last-run.json b/testing/subagent_generated/test-results/.last-run.json
new file mode 100644
index 0000000..cbcc1fb
--- /dev/null
+++ b/testing/subagent_generated/test-results/.last-run.json
@@ -0,0 +1,4 @@
+{
+  "status": "passed",
+  "failedTests": []
+}
\ No newline at end of file
diff --git a/testing/subagent_generated/verify-fixes.spec.ts b/testing/subagent_generated/verify-fixes.spec.ts
new file mode 100644
index 0000000..39fa355
--- /dev/null
+++ b/testing/subagent_generated/verify-fixes.spec.ts
@@ -0,0 +1,199 @@
+import { test, expect, Page } from '@playwright/test';
+
+const LOGIN_URL = 'http://localhost:3000/login';
+const API_URL = 'http://localhost:8000/api';
+const USERNAME = 'admin';
+const PASSWORD = 'admin123';
+
+/** ログインしてトークンを localStorage にセット */
+async function loginViaUI(page: Page) {
+  await page.goto(LOGIN_URL);
+  await page.fill('#username', USERNAME);
+  await page.fill('#password', PASSWORD);
+  await page.click('button[type="submit"]');
+  // ログイン後 /allocation にリダイレクトされるのを待つ
+  await page.waitForURL('**/allocation', { timeout: 15000 });
+}
+
+// ===== D-4: IsAuthenticated が有効か =====
+test.describe('D-4: IsAuthenticated', () => {
+  test('未認証で API にアクセスすると 401 が返る', async ({ request }) => {
+    const res = await request.get(`${API_URL}/fields/`);
+    expect(res.status()).toBe(401);
+  });
+
+  test('未認証でフロントにアクセスするとログイン画面にリダイレクト', async ({ page }) => {
+    await page.goto('http://localhost:3000/allocation');
+    // API が 401 を返すので、フロントがログイン画面に遷移するはず
+    await page.waitForURL('**/login', { timeout: 10000 });
+    await expect(page.locator('text=KeinaSystem')).toBeVisible();
+  });
+});
+
+// ===== ログイン → 作付計画画面 =====
+test.describe('ログイン → 作付計画画面', () => {
+  test('ログインして作付計画画面が表示される', async ({ page }) => {
+    await loginViaUI(page);
+    // allocation ページにいることを確認
+    expect(page.url()).toContain('/allocation');
+    // 圃場のデータが読み込まれるのを待つ（テーブルまたはリストが表示されるはず）
+    await page.waitForTimeout(2000);
+    // ページ内に何かしらのコンテンツがある
+    const body = await page.textContent('body');
+    expect(body).toBeTruthy();
+  });
+});
+
+// ===== A-8: 圃場詳細の共済/中山間情報表示 =====
+test.describe('A-8: 圃場詳細 共済/中山間情報', () => {
+  test('共済・中山間の両方が紐づく圃場で情報が表示される', async ({ page }) => {
+    await loginViaUI(page);
+    // Field ID 8 (口神　ハウス南) は kyosai=1, chusankan=1
+    await page.goto('http://localhost:3000/fields/8');
+    await page.waitForLoadState('networkidle');
+
+    // 共済情報セクション
+    await expect(page.locator('text=共済情報')).toBeVisible();
+    // テーブルヘッダが表示される
+    await expect(page.locator('text=耕地-分筆')).toBeVisible();
+    await expect(page.locator('text=漢字地名')).toBeVisible();
+    // 「紐づけられた共済区画はありません」が表示されないこと
+    await expect(page.locator('text=紐づけられた共済区画はありません')).not.toBeVisible();
+
+    // 中山間情報セクション
+    await expect(page.locator('text=中山間情報')).toBeVisible();
+    await expect(page.locator('text=所在地')).toBeVisible();
+    // 「紐づけられた中山間区画はありません」が表示されないこと
+    await expect(page.locator('text=紐づけられた中山間区画はありません')).not.toBeVisible();
+  });
+
+  test('共済のみ紐づく圃場で共済情報が表示される', async ({ page }) => {
+    await loginViaUI(page);
+    // Field ID 3 (おまけ) は kyosai=1, chusankan=0
+    await page.goto('http://localhost:3000/fields/3');
+    await page.waitForLoadState('networkidle');
+
+    await expect(page.locator('text=共済情報')).toBeVisible();
+    await expect(page.locator('text=紐づけられた共済区画はありません')).not.toBeVisible();
+    await expect(page.locator('text=紐づけられた中山間区画はありません')).toBeVisible();
+  });
+});
+
+// ===== E-1: PDF帳票フォーマット再設計 =====
+test.describe('E-1: PDF帳票', () => {
+  test('共済PDF が 200 で返る（表形式テンプレート）', async ({ page }) => {
+    await loginViaUI(page);
+    const token = await page.evaluate(() => localStorage.getItem('accessToken'));
+    const res = await page.request.get(`${API_URL}/reports/kyosai/2025/`, {
+      headers: { Authorization: `Bearer ${token}` },
+    });
+    expect(res.status()).toBe(200);
+    expect(res.headers()['content-type']).toContain('application/pdf');
+  });
+
+  test('中山間PDF が 200 で返る（表形式テンプレート）', async ({ page }) => {
+    await loginViaUI(page);
+    const token = await page.evaluate(() => localStorage.getItem('accessToken'));
+    const res = await page.request.get(`${API_URL}/reports/chusankan/2025/`, {
+      headers: { Authorization: `Bearer ${token}` },
+    });
+    expect(res.status()).toBe(200);
+    expect(res.headers()['content-type']).toContain('application/pdf');
+  });
+
+  test('帳票画面からPDFダウンロードリンクが表示される', async ({ page }) => {
+    await loginViaUI(page);
+    await page.goto('http://localhost:3000/reports');
+    await page.waitForLoadState('networkidle');
+    // 帳票画面が表示される
+    const body = await page.textContent('body');
+    expect(body).toBeTruthy();
+  });
+});
+
+// ===== E-1c: 中山間マスタ 17フィールド =====
+test.describe('E-1c: 中山間マスタ拡張', () => {
+  test('中山間 API が 17 フィールドを返す', async ({ page }) => {
+    await loginViaUI(page);
+    const token = await page.evaluate(() => localStorage.getItem('accessToken'));
+    // Field ID 8 は chusankan=1
+    const res = await page.request.get(`${API_URL}/fields/8/`, {
+      headers: { Authorization: `Bearer ${token}` },
+    });
+    expect(res.status()).toBe(200);
+    const data = await res.json();
+    const ch = data.chusankan_fields[0];
+    expect(ch).toBeDefined();
+    // 新フィールドが存在する
+    expect(ch).toHaveProperty('manager');
+    expect(ch).toHaveProperty('owner');
+    expect(ch).toHaveProperty('planting_area');
+    expect(ch).toHaveProperty('original_crop');
+    expect(ch).toHaveProperty('slope');
+    expect(ch).toHaveProperty('base_amount');
+    expect(ch).toHaveProperty('branch_num');
+    expect(ch).toHaveProperty('land_type');
+  });
+
+  test('共済マスタの面積が 0 でない', async ({ page }) => {
+    await loginViaUI(page);
+    const token = await page.evaluate(() => localStorage.getItem('accessToken'));
+    // Field ID 3 (おまけ) は kyosai=1
+    const res = await page.request.get(`${API_URL}/fields/3/`, {
+      headers: { Authorization: `Bearer ${token}` },
+    });
+    const data = await res.json();
+    const k = data.kyosai_fields[0];
+    expect(k).toBeDefined();
+    expect(k.area).toBeGreaterThan(0);
+  });
+});
+
+// ===== C-2: 共済マスタ unique 制約 =====
+test.describe('C-2: 共済マスタ unique 制約 (k_num, s_num)', () => {
+  test('同じ k_num + s_num の重複登録が拒否される', async ({ page }) => {
+    await loginViaUI(page);
+    const token = await page.evaluate(() => localStorage.getItem('accessToken'));
+
+    // まずテスト用データを作成
+    const createRes = await page.request.post(`${API_URL}/fields/kyosai/`, {
+      headers: {
+        Authorization: `Bearer ${token}`,
+        'Content-Type': 'application/json',
+      },
+      data: {
+        k_num: 'TEST99',
+        s_num: '1',
+        kanji_name: 'テスト区画',
+        address: 'テスト住所',
+        area: 1000,
+      },
+    });
+
+    // 作成成功 or 既に存在する場合
+    if (createRes.status() === 201) {
+      // 同じ k_num + s_num で再度作成 → 拒否されるべき
+      const dupRes = await page.request.post(`${API_URL}/fields/kyosai/`, {
+        headers: {
+          Authorization: `Bearer ${token}`,
+          'Content-Type': 'application/json',
+        },
+        data: {
+          k_num: 'TEST99',
+          s_num: '1',
+          kanji_name: 'テスト区画2',
+          address: 'テスト住所2',
+          area: 2000,
+        },
+      });
+      // 400 (validation error) が返るべき
+      expect(dupRes.status()).toBe(400);
+
+      // クリーンアップ: テストデータ削除
+      const created = await createRes.json();
+      await page.request.delete(`${API_URL}/fields/kyosai/${created.id}/`, {
+        headers: { Authorization: `Bearer ${token}` },
+      });
+    }
+  });
+});
diff --git a/testing/test_report.md b/testing/test_report.md
new file mode 100644
index 0000000..dfb1464
--- /dev/null
+++ b/testing/test_report.md
@@ -0,0 +1,159 @@
+# KeinaSystem 読み取り専用テスト結果レポート
+
+> **実施日**: 2026-03-01
+> **テスト方針**: データの書き込みを一切行わず、既存データの範囲内で画面表示・操作を検証
+
+---
+
+## テスト結果サマリー
+
+| テスト対象 | 結果 | 備考 |
+|---|---|---|
+| ログイン | ✅ 正常 | ログイン後 `/allocation` にリダイレクト |
+| ダッシュボード | ✅ 正常 | サマリーカード・集計テーブル・クイックアクションすべて表示OK |
+| 圃場一覧 | ✅ 正常 | 39筆表示、並び替え・対応表切り替え動作OK |
+| 圃場詳細 | ✅ 正常 | 基本情報・共済1件・中山間1件の紐付き表示OK |
+| 圃場詳細（存在しないID） | ✅ 正常 | 「圃場が見つかりません」の適切なエラー表示 |
+| 対応表モード | ✅ 正常 | 共済/中山間の紐付き一覧が正しく表示 |
+| 作付け計画 | ✅ 正常 | 年度セレクタ・ソート・集計サイドバーすべて動作OK |
+| 作付け計画 フィルタ | ✅ 正常 | グループ順ソートが正しく動作 |
+| 帳票出力画面 | ✅ 正常 | 2種類の帳票表示OK |
+| 共済細目書PDFプレビュー | ⚠️ 軽微な問題 | 下記「発見事項」参照 |
+| 中山間申請書PDFプレビュー | ⚠️ 軽微な問題 | 下記「発見事項」参照 |
+| データ取込画面 | ✅ 正常 | 3種類のインポートセクション表示OK |
+| 気象データ（年別集計） | ✅ 正常 | サマリーカード・グラフ正常表示 |
+| 気象データ（月別サマリー） | ⚠️ 軽微な問題 | 下記「発見事項」参照 |
+| 気象データ（直近14日） | ✅ 正常 | 日次データテーブル正常表示 |
+| 気象データ（期間指定） | ✅ 正常 | 日付入力フィールド正常表示 |
+| 施肥計画一覧 | ✅ 正常 | 2026年度データなし → 「施肥計画はありません」表示OK |
+| 肥料マスタ | ✅ 正常 | 5件の肥料レコード正常表示 |
+| メール処理履歴 | ✅ 正常 | メール一覧・フィルタ・バッジ表示すべてOK |
+| メール通知ルール | ✅ 正常 | 6件のルール正常表示 |
+
+---
+
+## 発見された不具合・改善点
+
+### 🟡 問題1: 気象データ月別サマリーのデータ未取得月の表示
+
+**画面**: `/weather` → 月別サマリータブ
+**現象**: 2026年3月〜12月（まだデータがない月）で、最高気温・最低気温の列に「—°C」と表示される。
+**期待動作**: 「—」のみ表示するか、セルを空にすべき（「°C」単位がつくと0℃と紛らわしい）。
+**重要度**: 低（表示上の問題、データ自体は正しい）
+
+**スクリーンショット**: `testing/screenshots/06_weather/weather_monthly_summary_*.png`
+
+---
+
+### 🟡 問題2: 水稲共済細目書PDFの紐付けなし行
+
+**画面**: `/reports` → 水稲共済細目書プレビュー
+**現象**: 耕地番号 2-1 の行で、作付品目・品種・圃場名称がすべて「─」（ダッシュ）になっている。
+**原因の可能性**:
+  - 共済マスタ耕地 2-1 に実圃場が紐付いていない
+  - または紐付いてはいるが作付け計画が未設定
+**影響**: PDFの出力内容に空行が含まれる
+**重要度**: 中（実運用で提出するPDFに影響する可能性あり。ただし紐付けデータの問題であってシステムの不具合ではないかもしれない）
+
+**スクリーンショット**: `testing/screenshots/04_reports/report_preview_pdf_*.png`
+
+---
+
+### 🟡 問題3: 中山間交付金申請書PDFの作物・品種・圃場名称
+
+**画面**: `/reports` → 中山間交付金申請書プレビュー
+**現象**: ほぼすべての行で「作物」「品種」「圃場名称」の列が「─」（空）になっている。
+**原因の可能性**:
+  - 中山間マスタの区画に実圃場が紐付いていない
+  - 紐付いた圃場に2026年度の作付け計画がない
+  - 中山間マスタは71区画あるが実圃場は39筆で、多くの区画が未紐付けの可能性
+**重要度**: 中（問題2と同じ原因の可能性が高い）
+
+**スクリーンショット**: `testing/screenshots/04_reports/chusankan_report_preview_jap_*.png`
+
+---
+
+### 🔵 情報: コンソール警告
+
+**全画面共通**: Next.js の Hydration 警告が出力されるケースがある。これは開発環境特有のもので、ブラウザ拡張機能による属性不一致が原因。システムの動作に影響なし。
+
+**favicon.ico**: ダッシュボードで `favicon.ico` の 404 エラーがコンソールに記録されている。
+**重要度**: 最低（ユーザーに影響なし。本番環境でfaviconを設置すれば解消）
+
+---
+
+## 読み取り専用のため実施できなかったテスト一覧
+
+以下のテストはデータの書き込みが必要なため、今回のテスト方針では実施不可でした。
+
+### 圃場管理
+- [ ] 圃場の新規作成（`POST /api/fields/`）
+- [ ] 圃場情報の編集・保存（`PATCH /api/fields/{id}/`）
+- [ ] 圃場の削除（`DELETE /api/fields/{id}/`）
+- [ ] 共済マスタの紐付け追加（`POST /api/fields/{id}/kyosai-links/`）
+- [ ] 共済マスタの紐付け削除
+- [ ] 中山間マスタの紐付け追加・削除
+
+### データ取込
+- [ ] 共済マスタODSファイルのインポート
+- [ ] 中山間マスタODSファイルのインポート
+- [ ] 実圃場ODSファイルのインポート
+
+### 作付け計画
+- [ ] 作付け計画の作成（作物・品種の設定）
+- [ ] 作物のフィルタ（ドロップダウン変更後の表示確認）
+- [ ] 一括更新（チェックボックス選択→一括設定）
+- [ ] 前年度コピー
+- [ ] グループ名のインライン編集
+- [ ] 表示順の変更（↑↓ボタン）
+- [ ] 品種管理画面での追加・削除
+
+### 帳票出力
+- [ ] PDFダウンロード（ダウンロードボタンのクリック）
+- [ ] CSVエクスポート（`GET /api/fields/export/zip/`）
+
+### 施肥計画
+- [ ] 施肥計画の新規作成
+- [ ] 施肥計画の編集（マトリクス表入力）
+- [ ] 自動計算（per_tan / even / nitrogen の3方式）
+- [ ] 施肥計画PDF出力
+- [ ] 肥料マスタの新規追加・編集・削除
+
+### メール通知
+- [ ] 送信者ルールの追加
+- [ ] 送信者ルールの削除
+- [ ] フィードバックの送信
+- [ ] メール履歴画面からのフィードバック編集
+
+### 気象データ
+- [ ] 期間指定モードでの日付入力→表示（APIへのリクエスト発生）
+- [ ] 過去年度の選択（年セレクタで2016〜2025を選択）
+
+---
+
+## テスト環境
+
+- **URL**: http://localhost:3000
+- **認証**: JWT（akira / keina2025）
+- **Docker**: docker-compose.yml（db + backend + frontend）
+- **テスト日時**: 2026-03-01 12:30〜13:15
+
+---
+
+## ファイル構成
+
+```
+testing/
+├── test_report.md              ← このファイル
+├── screenshots/
+│   ├── 01_dashboard/           ← ダッシュボード画面
+│   ├── 02_fields/              ← 圃場一覧・詳細・対応表
+│   ├── 03_allocation/          ← 作付け計画
+│   ├── 04_reports/             ← 帳票出力・PDFプレビュー
+│   ├── 05_import/              ← データ取込
+│   ├── 06_weather/             ← 気象データ
+│   ├── 07_fertilizer/          ← 施肥計画・肥料マスタ
+│   └── 08_mail/                ← メール履歴・ルール
+├── recordings/                 ← ブラウザ操作の録画（WebP）
+└── subagent_generated/         ← テスト中に自動生成された一時ファイル
+```