diff --git a/projects/social_platform/src/app/ui/pages/program/management/management.component.html b/projects/social_platform/src/app/ui/pages/program/management/management.component.html
index 83c393718..caafe8926 100644
--- a/projects/social_platform/src/app/ui/pages/program/management/management.component.html
+++ b/projects/social_platform/src/app/ui/pages/program/management/management.component.html
@@ -820,7 +820,12 @@ <h2>Календарь программы</h2>
                 type="datetime-local"
                 [id]="field.key"
                 [formControlName]="field.key"
+                [attr.aria-invalid]="dateError(field.key) ? 'true' : null"
+                [attr.aria-describedby]="dateError(field.key) ? field.key + '-error' : null"
             /></label>
+            @if (dateError(field.key); as error) {
+              <p appAlert="error" role="alert" [id]="field.key + '-error'">{{ error }}</p>
+            }
           }
           <p class="management__muted">
             Если отдельный срок сдачи не задан, действует срок окончания регистрации.
diff --git a/projects/social_platform/src/app/ui/pages/program/management/management.component.spec.ts b/projects/social_platform/src/app/ui/pages/program/management/management.component.spec.ts
index 5b007eadc..3aeaff9b1 100644
--- a/projects/social_platform/src/app/ui/pages/program/management/management.component.spec.ts
+++ b/projects/social_platform/src/app/ui/pages/program/management/management.component.spec.ts
@@ -113,6 +113,49 @@ describe("Сохранение настроек организатора", () =>
     expect(component.basicForm.dirty).toBe(true);
     expect(component.formError()).toContain("Данные изменились");
   });
+  it.each(["2026-09-30T18:00", "2026-10-01T15:00", "2026-10-01T15:00:00"])(
+    "не отправляет несогласованные сроки и сохраняет введенное окончание %s",
+    finish => {
+      const { component, save } = setup();
+      component.settingsTab.set("dates");
+      component.datesForm.controls.datetimeFinished.setValue(finish);
+      component.datesForm.controls.datetimeFinished.markAsDirty();
+      component.save();
+      expect(save).not.toHaveBeenCalled();
+      expect(component.dateError("datetimeFinished")).toContain("позже начала");
+      expect(component.dateError("datetimeRegistrationEnds")).toContain("не позже окончания");
+      expect(component.datesForm.controls.datetimeFinished.value).toBe(finish);
+      expect(component.datesForm.dirty).toBe(true);
+    },
+  );
+  it("разрешает регистрацию после старта вплоть до окончания программы", () => {
+    const { component, save } = setup();
+    component.settingsTab.set("dates");
+    const registration = component.datesForm.controls.datetimeRegistrationEnds;
+    registration.setValue(component.datesForm.controls.datetimeFinished.value);
+    registration.markAsDirty();
+    component.save();
+    expect(component.dateError("datetimeRegistrationEnds")).toBeNull();
+    expect(save).toHaveBeenCalledWith(1, "dates", {
+      expectedUpdatedAt: program.updatedAt,
+      confirmReopen: false,
+      datetimeRegistrationEnds: new Date(program.datetimeFinished!).toISOString(),
+    });
+  });
+  it("не требует полного календаря черновика", () => {
+    const { component, state, save } = setup();
+    state.program.set({ ...program, draft: true });
+    component.resetForms();
+    component.settingsTab.set("dates");
+    component.datesForm.controls.datetimeFinished.setValue("");
+    component.datesForm.controls.datetimeFinished.markAsDirty();
+    component.save();
+    expect(save).toHaveBeenCalledWith(1, "dates", {
+      expectedUpdatedAt: program.updatedAt,
+      confirmReopen: false,
+      datetimeFinished: null,
+    });
+  });
   it("сохраняет mobile URL и полный framing; 409 оставляет кадр для повторной попытки", () => {
     const { component, save } = setup();
     component.settingsTab.set("basic");
diff --git a/projects/social_platform/src/app/ui/pages/program/management/management.component.ts b/projects/social_platform/src/app/ui/pages/program/management/management.component.ts
index 4171a8935..4fd70c930 100644
--- a/projects/social_platform/src/app/ui/pages/program/management/management.component.ts
+++ b/projects/social_platform/src/app/ui/pages/program/management/management.component.ts
@@ -1197,6 +1197,18 @@ export class ProgramManagementComponent implements OnInit {
       control.updateValueAndValidity({ emitEvent: false });
     }
   }
+  dateError(field: string): string | null {
+    const values = this.datesForm.getRawValue();
+    const timestamp = (value: string | null) => (value ? Date.parse(`${value}+03:00`) : Number.NaN);
+    const start = timestamp(values.datetimeStarted),
+      finish = timestamp(values.datetimeFinished),
+      registration = timestamp(values.datetimeRegistrationEnds);
+    if (field === "datetimeFinished" && finish <= start)
+      return "Окончание программы должно быть позже начала.";
+    if (field === "datetimeRegistrationEnds" && registration > finish)
+      return "Регистрация должна завершиться не позже окончания программы.";
+    return null;
+  }
   save(confirmReopen = false): void {
     const p = this.state.program(),
       section = this.settingsTab();
@@ -1212,9 +1224,13 @@ export class ProgramManagementComponent implements OnInit {
     )
       return;
     const form = section === "basic" ? this.basicForm : this.datesForm;
-    if (form.invalid) {
+    const dateError =
+      section === "dates"
+        ? this.dateFields.map(field => this.dateError(field.key)).find(Boolean)
+        : null;
+    if (form.invalid || dateError) {
       form.markAllAsTouched();
-      this.formError.set("Заполните обязательные поля.");
+      this.formError.set(dateError || "Заполните обязательные поля.");
       return;
     }
     const body: ManagementSettingsWrite = { expectedUpdatedAt: p.updatedAt, confirmReopen };
diff --git a/projects/social_platform/src/app/ui/pages/program/management/solution-form/solution-form.component.html b/projects/social_platform/src/app/ui/pages/program/management/solution-form/solution-form.component.html
index fdf453c32..551dba054 100644
--- a/projects/social_platform/src/app/ui/pages/program/management/solution-form/solution-form.component.html
+++ b/projects/social_platform/src/app/ui/pages/program/management/solution-form/solution-form.component.html
@@ -106,6 +106,9 @@ <h4>{{ field.label }}{{ field.required ? " *" : "" }}</h4>
                 добавьте его заново.
               </p>
             }
+            @if (optionsProblem(field); as problem) {
+              <p appAlert="warning">{{ problem }}</p>
+            }
           </div>
           <div class="project-form__actions">
             <button
@@ -125,7 +128,7 @@ <h4>{{ field.label }}{{ field.required ? " *" : "" }}</h4>
             >
               Ниже</button
             ><button appButton="text" type="button" [disabled]="saving()" (click)="edit(field)">
-              Изменить</button
+              {{ optionsAction(field) }}</button
             ><button
               appButton="text"
               type="button"
diff --git a/projects/social_platform/src/app/ui/pages/program/management/solution-form/solution-form.component.spec.ts b/projects/social_platform/src/app/ui/pages/program/management/solution-form/solution-form.component.spec.ts
index 40f8e7fb8..e36e0f5ce 100644
--- a/projects/social_platform/src/app/ui/pages/program/management/solution-form/solution-form.component.spec.ts
+++ b/projects/social_platform/src/app/ui/pages/program/management/solution-form/solution-form.component.spec.ts
@@ -129,6 +129,32 @@ describe("Конструктор формы решения", () => {
       true,
     );
   });
+  it.each(["case_championship", "hackathon"] as const)(
+    "guides an incomplete %s template to its case editor without a failed request",
+    async template => {
+      read.execute.mockReturnValue(
+        of(ok({ ...structuredClone(base), hasAnswers: false, fieldsUsage: [] })),
+      );
+      const fixture = await setup(),
+        component = fixture.componentInstance;
+      component.templateChoice.setValue(template);
+      await component.applyTemplate();
+      fixture.detectChanges();
+      const caseField = component.fields().find(field => field.purpose === "case")!;
+      const action = template === "hackathon" ? "Добавить задачи" : "Добавить кейсы";
+      expect(fixture.nativeElement.textContent).toContain(action);
+      component.save();
+      expect(save.execute).not.toHaveBeenCalled();
+      expect(component.editing()).toBe(caseField.clientKey);
+      expect(component.editorError()).toContain(template === "hackathon" ? "трек" : "кейс");
+      component.addOption();
+      component.editor.controls.options.at(0).setValue("Городская среда");
+      component.applyField();
+      component.save();
+      expect(save.execute).toHaveBeenCalledTimes(1);
+      expect(save.execute.mock.calls[0][1].fields[0].options).toEqual(["Городская среда"]);
+    },
+  );
   it("keeps local edits on failure and merges fresh fields on revision conflict", async () => {
     const fixture = await setup(),
       component = fixture.componentInstance;
diff --git a/projects/social_platform/src/app/ui/pages/program/management/solution-form/solution-form.component.ts b/projects/social_platform/src/app/ui/pages/program/management/solution-form/solution-form.component.ts
index 5998fe4b6..1b24639f8 100644
--- a/projects/social_platform/src/app/ui/pages/program/management/solution-form/solution-form.component.ts
+++ b/projects/social_platform/src/app/ui/pages/program/management/solution-form/solution-form.component.ts
@@ -485,6 +485,24 @@ export class ManagementSolutionFormComponent {
     this.previewGroup.set(solutionFieldsGroup(fields));
     this.previewOpen.set(true);
   }
+  optionsProblem(field: EditableSolutionField): string | null {
+    if (
+      !["select", "radio"].includes(field.type) ||
+      (field.options.length && field.options.every(option => option.trim()))
+    )
+      return null;
+    if (field.purpose === "case")
+      return this.template() === "hackathon"
+        ? "Добавьте хотя бы одну задачу или трек."
+        : "Добавьте хотя бы один кейс.";
+    return "Добавьте хотя бы один вариант выбора.";
+  }
+  optionsAction(field: EditableSolutionField): string {
+    if (!this.optionsProblem(field)) return "Изменить";
+    if (field.purpose === "case")
+      return this.template() === "hackathon" ? "Добавить задачи" : "Добавить кейсы";
+    return "Добавить варианты";
+  }
   save() {
     if (
       this.saving() ||
@@ -495,6 +513,12 @@ export class ManagementSolutionFormComponent {
       this.missingIds().length
     )
       return;
+    const incomplete = this.fields().find(field => this.optionsProblem(field));
+    if (incomplete) {
+      this.edit(incomplete);
+      this.editorError.set(this.optionsProblem(incomplete)!);
+      return;
+    }
     this.saving.set(true);
     this.error.set("");
     this.notice.set("");
diff --git a/projects/social_platform/src/app/ui/pages/program/registration/public-registration.component.spec.ts b/projects/social_platform/src/app/ui/pages/program/registration/public-registration.component.spec.ts
index d534062ab..71a2da7a6 100644
--- a/projects/social_platform/src/app/ui/pages/program/registration/public-registration.component.spec.ts
+++ b/projects/social_platform/src/app/ui/pages/program/registration/public-registration.component.spec.ts
@@ -100,7 +100,13 @@ describe("Публичная регистрация участника", () => {
     const { component, api } = setup(true);
     component.submit();
     expect(api.submit).not.toHaveBeenCalled();
-    expect(component.error()).toBeTruthy();
+    expect(component.error()).toBe("Заполните обязательные поля анкеты.");
+  });
+  it("напоминает о согласиях только при создании аккаунта", () => {
+    const { component, api } = setup();
+    component.submit();
+    expect(api.submit).not.toHaveBeenCalled();
+    expect(component.error()).toBe("Заполните обязательные поля и подтвердите согласия.");
   });
   it("не сохраняет пароль в браузере после регистрации", () => {
     const { component } = setup();
diff --git a/projects/social_platform/src/app/ui/pages/program/registration/public-registration.component.ts b/projects/social_platform/src/app/ui/pages/program/registration/public-registration.component.ts
index 9dba45ae8..5e3c961ef 100644
--- a/projects/social_platform/src/app/ui/pages/program/registration/public-registration.component.ts
+++ b/projects/social_platform/src/app/ui/pages/program/registration/public-registration.component.ts
@@ -208,7 +208,11 @@ export class PublicRegistrationComponent {
     this.answers.markAllAsTouched();
     if (!this.authenticated()) this.account.markAllAsTouched();
     if (this.answers.invalid || (!this.authenticated() && this.account.invalid)) {
-      this.error.set("Заполните обязательные поля и подтвердите согласие.");
+      this.error.set(
+        this.authenticated()
+          ? "Заполните обязательные поля анкеты."
+          : "Заполните обязательные поля и подтвердите согласия.",
+      );
       return;
     }
     const account = this.account.getRawValue();
diff --git a/projects/social_platform/src/app/ui/widgets/detail/detail-cleanup.component.spec.ts b/projects/social_platform/src/app/ui/widgets/detail/detail-cleanup.component.spec.ts
index 5b4bacc97..3ba6c6dcd 100644
--- a/projects/social_platform/src/app/ui/widgets/detail/detail-cleanup.component.spec.ts
+++ b/projects/social_platform/src/app/ui/widgets/detail/detail-cleanup.component.spec.ts
@@ -10,6 +10,8 @@ import { ProjectFormService } from "@api/project/project-form.service";
 import { ProjectAdditionalService } from "@api/project/facades/edit/project-additional.service";
 import { ChatStateService } from "@domain/shared/chat-state.service";
 import { Program } from "@domain/program/program.model";
+import { ProgramDetailMainUIInfoService } from "@api/program/facades/detail/ui/program-detail-main-ui-info.service";
+import { PublicProgramSolutionsComponent } from "@ui/pages/program/published-solutions/public-program-solutions.component";
 import { DeatilComponent } from "./detail.component";
 import { DetailInfoService } from "./services/detail-info.service";
 import { DetailProgramInfoService } from "./services/program/detail-program-info.service";
@@ -49,9 +51,10 @@ describe("Detail cleanup actions", () => {
       },
     );
     await TestBed.configureTestingModule({
-      imports: [DeatilComponent],
+      imports: [DeatilComponent, PublicProgramSolutionsComponent],
       providers: [
         provideRouter([]),
+        { provide: ProgramDetailMainUIInfoService, useValue: { program: info } },
         { provide: ProjectFormService, useValue: { getForm: () => new FormGroup({}) } },
         { provide: ChatStateService, useValue: { userOnlineStatusCache: of({}) } },
       ],
@@ -133,6 +136,39 @@ describe("Detail cleanup actions", () => {
     fixture.detectChanges();
     expect(button().disabled).toBe(true);
   });
+  it.each(["", "https://example.test/cover.png"])(
+    "shows exactly one program heading on desktop and mobile with cover %s",
+    coverImageAddress => {
+      info.set({ ...Program.default(), name: "Название программы", coverImageAddress });
+      const fixture = TestBed.createComponent(DeatilComponent);
+      fixture.detectChanges();
+      for (const width of [1440, 390]) {
+        Object.assign(fixture.componentInstance, { appWidth: width });
+        fixture.changeDetectorRef.markForCheck();
+        fixture.detectChanges();
+        const headings = fixture.nativeElement.querySelectorAll("h1");
+        expect(headings).toHaveLength(1);
+        expect(headings[0].textContent).toContain("Название программы");
+      }
+    },
+  );
+  it.each(["", "https://example.test/cover.png"])(
+    "keeps one desktop heading in the public solutions page with cover %s",
+    coverImageAddress => {
+      const previousWidth = window.innerWidth;
+      Object.defineProperty(window, "innerWidth", { configurable: true, value: 1440 });
+      try {
+        info.set({ ...Program.default(), name: "Публичная программа", coverImageAddress });
+        const fixture = TestBed.createComponent(PublicProgramSolutionsComponent);
+        fixture.detectChanges();
+        const headings = fixture.nativeElement.querySelectorAll("h1");
+        expect(headings).toHaveLength(1);
+        expect(headings[0].textContent).toContain("Публичная программа");
+      } finally {
+        Object.defineProperty(window, "innerWidth", { configurable: true, value: previousWidth });
+      }
+    },
+  );
   it("organizer has management without a duplicate public-solutions action", () => {
     manager.set(true);
     info.set({ ...Program.default(), solutionStorageMode: "solution" });
diff --git a/projects/social_platform/src/app/ui/widgets/detail/detail.component.html b/projects/social_platform/src/app/ui/widgets/detail/detail.component.html
index a46fc55ac..d23ce79e7 100644
--- a/projects/social_platform/src/app/ui/widgets/detail/detail.component.html
+++ b/projects/social_platform/src/app/ui/widgets/detail/detail.component.html
@@ -91,6 +91,10 @@
             ></ng-container>
           </div>
 
+          @if (appWidth >= 1000 && listType() === "program" && !publicationsOnly()) {
+            <h1 class="info__program-heading text-body-18">{{ info().name }}</h1>
+          }
+
           @if (appWidth >= 1000 && listType() === "project") {
             <h1 class="info__project-title text-body-12">{{ info().name }}</h1>
           }
diff --git a/projects/social_platform/src/app/ui/widgets/detail/detail.component.scss b/projects/social_platform/src/app/ui/widgets/detail/detail.component.scss
index 2005f167f..c495df4c0 100644
--- a/projects/social_platform/src/app/ui/widgets/detail/detail.component.scss
+++ b/projects/social_platform/src/app/ui/widgets/detail/detail.component.scss
@@ -181,6 +181,12 @@ $detail-bar-mb: 12px;
     overflow-wrap: anywhere;
   }
 
+  &__program-heading {
+    display: block;
+    margin-bottom: 20px;
+    overflow-wrap: anywhere;
+  }
+
   &__cover-frame {
     position: absolute;
     inset: 0;