Add explicit per-plan gauge temperature offset

test/report-browser.test.js

@@ -815,3 +815,36 @@ test("browser: an interrupted Bean Bro stream keeps partial text, restores the q
  assert.equal(await page.locator("#chat-thread .user").count(),1);
  assert.deepEqual(errors,[]);
 });
+
+test("browser: a per-plan gauge offset updates the graph, persists, clones and prints",browserOptions,async(t)=>{
+ const {page,browser,base,create,csrfToken,errors}=await session(t);
+ const saved=await create(warningPlan());
+ await page.goto(base+"/app?plan="+saved.id);
+ await page.getByRole("button",{name:"Preview report",exact:true}).waitFor();
+ const input=page.getByRole("spinbutton",{name:"Gauge temperature offset (°F)"});
+ await input.fill("-50");
+ await page.waitForFunction(()=>document.querySelector("#curve-svg-live").textContent.includes("342°F"));
+ await input.scrollIntoViewIfNeeded();
+ await page.screenshot({path:"/tmp/gauge-offset-desktop.png",animations:"disabled"});
+ await page.getByRole("link",{name:"← Your plans",exact:true}).click();
+ const loaded=(await (await page.request.get(base+"/api/plans/"+saved.id)).json()).plan.plan;
+ assert.equal(loaded.temperatureOffsetF,"-50");
+ const cloned=await (await page.request.post(base+"/api/plans/"+saved.id+"/clone",{headers:{"x-csrf-token":csrfToken}})).json();
+ assert.equal(cloned.plan.plan.temperatureOffsetF,"-50");
+ await page.setViewportSize({width:390,height:844});
+ await page.goto(base+"/app?plan="+saved.id);
+ await input.waitFor();
+ assert.equal(await input.inputValue(),"-50");
+ await input.scrollIntoViewIfNeeded();
+ await page.screenshot({path:"/tmp/gauge-offset-mobile.png",animations:"disabled"});
+ assert.equal(await page.evaluate(()=>document.documentElement.scrollWidth<=innerWidth),true);
+ const report=await browser.newPage();
+ const html=renderReportHtml(loaded);
+ assert.match(html,/Gauge temperature offset/);assert.match(html,/-50°F/);assert.match(html,/342°F/);
+ await report.setContent(html);
+ const {PDFDocument}=await import("pdf-lib");
+ const pdf=await PDFDocument.load(await report.pdf({format:"Letter",preferCSSPageSize:true}));
+ assert.equal(pdf.getPageCount(),2);
+ await report.close();
+ assert.deepEqual(errors,[]);
+});