docs(planning): record phase-7 pre-release verification

- typecheck/lint/test/format clean (modulo the chart test file
  blocked by Marc constraint — pre-existing)
- integration suite green after the test-isolation fix in the
  preceding commit (10/10 consecutive runs)
- build + e2e blocked by the documented Node-25 Reflect.get bug
  on this workstation; CI Docker (Node 22) is canonical and
  Phase-3 already records 41/41 e2e specs green there
- format sweep on .planning/*.md + e2e/measurement-flow.spec.ts
  to clear the warnings Phase 6 reconcile listed as
  pre-existing-out-of-scope

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

e2e/measurement-flow.spec.ts

@@ -104,9 +104,7 @@ test.describe("add measurement flow", () => {
     // v1.5 phase-5: the menu items now have distinct labels — the
     // measurement entry says "Measurement" / "Messung" instead of "Add",
     // so we can target it directly.
-    await page
-      .getByRole("menuitem", { name: /measurement|messung/i })
-      .click();
+    await page.getByRole("menuitem", { name: /measurement|messung/i }).click();
 
     // Form should be visible inside the dialog. Switch type to WEIGHT
     // (combo-box defaults to BLOOD_PRESSURE).