feat: update version to 0.8.0 and enhance training planning features

- Incremented application version to 0.8.0 and updated database schema version to 20260428031.
- Introduced support for training plan templates, allowing users to create and manage reusable training structures.
- Enhanced the Training Planning UI to include sections and exercises, improving the organization of training units.
- Updated API endpoints for training plan templates, enabling CRUD operations for better integration with the frontend.
- Improved validation and permission checks for creating training units, ensuring proper access control.

backend/migrations/031_training_plan_templates_and_sections.sql

@@ -0,0 +1,113 @@
+-- Migration 031: Trainingsvorlagen (Sektionen) und strukturierter Ablauf pro Einheit
+-- Freie Anmerkungszeilen (note) zwischen Übungen (exercise) mit optionaler Variante/Dauer.
+
+-- ── Vorlagen (wiederverwendbare Gliederung für Gruppen/Trainer) ─────────────
+CREATE TABLE IF NOT EXISTS training_plan_templates (
+    id SERIAL PRIMARY KEY,
+    club_id INT REFERENCES clubs(id) ON DELETE SET NULL,
+    created_by INT REFERENCES profiles(id) ON DELETE SET NULL,
+    name VARCHAR(200) NOT NULL,
+    description TEXT,
+    created_at TIMESTAMP DEFAULT NOW(),
+    updated_at TIMESTAMP DEFAULT NOW()
+);
+
+CREATE TABLE IF NOT EXISTS training_plan_template_sections (
+    id SERIAL PRIMARY KEY,
+    template_id INT NOT NULL REFERENCES training_plan_templates(id) ON DELETE CASCADE,
+    order_index INT NOT NULL,
+    title VARCHAR(200) NOT NULL,
+    guidance_text TEXT,
+    UNIQUE (template_id, order_index)
+);
+
+CREATE INDEX IF NOT EXISTS idx_training_plan_templates_club ON training_plan_templates(club_id);
+CREATE INDEX IF NOT EXISTS idx_training_plan_templates_creator ON training_plan_templates(created_by);
+CREATE INDEX IF NOT EXISTS idx_training_plan_template_sections_template ON training_plan_template_sections(template_id);
+
+DROP TRIGGER IF EXISTS training_plan_templates_update ON training_plan_templates;
+CREATE TRIGGER training_plan_templates_update
+    BEFORE UPDATE ON training_plan_templates
+    FOR EACH ROW EXECUTE FUNCTION update_timestamp();
+
+-- ── Verknüpfung Einheit ↔ genutzte Vorlage (nur Metadaten) ──────────────────
+ALTER TABLE training_units
+    ADD COLUMN IF NOT EXISTS plan_template_id INT REFERENCES training_plan_templates(id) ON DELETE SET NULL;
+
+CREATE INDEX IF NOT EXISTS idx_training_units_plan_template ON training_units(plan_template_id);
+
+-- ── Konkrete Sektionen je Trainingseinheit ────────────────────────────────
+CREATE TABLE IF NOT EXISTS training_unit_sections (
+    id SERIAL PRIMARY KEY,
+    training_unit_id INT NOT NULL REFERENCES training_units(id) ON DELETE CASCADE,
+    order_index INT NOT NULL,
+    title VARCHAR(200) NOT NULL DEFAULT 'Abschnitt',
+    guidance_notes TEXT,
+    source_template_section_id INT REFERENCES training_plan_template_sections(id) ON DELETE SET NULL,
+    UNIQUE (training_unit_id, order_index)
+);
+
+CREATE INDEX IF NOT EXISTS idx_training_unit_sections_unit ON training_unit_sections(training_unit_id);
+
+-- ── Positionen: Übung oder freie Anmerkung ────────────────────────────────
+CREATE TABLE IF NOT EXISTS training_unit_section_items (
+    id SERIAL PRIMARY KEY,
+    section_id INT NOT NULL REFERENCES training_unit_sections(id) ON DELETE CASCADE,
+    order_index INT NOT NULL,
+    item_type VARCHAR(20) NOT NULL CHECK (item_type IN ('exercise', 'note')),
+    exercise_id INT REFERENCES exercises(id) ON DELETE SET NULL,
+    exercise_variant_id INT REFERENCES exercise_variants(id) ON DELETE SET NULL,
+    planned_duration_min INT,
+    actual_duration_min INT,
+    notes TEXT,
+    modifications TEXT,
+    note_body TEXT,
+    UNIQUE (section_id, order_index),
+    CHECK (
+        (item_type = 'exercise' AND exercise_id IS NOT NULL AND note_body IS NULL)
+        OR
+        (item_type = 'note' AND exercise_id IS NULL)
+    )
+);
+
+CREATE INDEX IF NOT EXISTS idx_training_unit_section_items_section ON training_unit_section_items(section_id);
+CREATE INDEX IF NOT EXISTS idx_training_unit_section_items_exercise ON training_unit_section_items(exercise_id)
+    WHERE exercise_id IS NOT NULL;
+
+-- ── Bestehende Zeilen migrieren: eine Sektion „Übungen“ pro Einheit ─────────
+INSERT INTO training_unit_sections (training_unit_id, order_index, title)
+SELECT id, 0, 'Übungen'
+FROM training_units tu
+WHERE NOT EXISTS (
+    SELECT 1 FROM training_unit_sections tus WHERE tus.training_unit_id = tu.id
+);
+
+INSERT INTO training_unit_section_items (
+    section_id,
+    order_index,
+    item_type,
+    exercise_id,
+    exercise_variant_id,
+    planned_duration_min,
+    actual_duration_min,
+    notes,
+    modifications,
+    note_body
+)
+SELECT
+    tus.id,
+    tue.order_index,
+    'exercise',
+    tue.exercise_id,
+    tue.exercise_variant_id,
+    tue.planned_duration_min,
+    tue.actual_duration_min,
+    tue.notes,
+    tue.modifications,
+    NULL
+FROM training_unit_exercises tue
+INNER JOIN training_unit_sections tus
+    ON tus.training_unit_id = tue.training_unit_id
+    AND tus.order_index = 0;
+
+DROP TABLE IF EXISTS training_unit_exercises;

backend/version.py

@@ -1,8 +1,8 @@
 # Shinkan Jinkendo Version Information
 
-APP_VERSION = "0.7.9"
-BUILD_DATE = "2026-04-27"
-DB_SCHEMA_VERSION = "20260427030"
+APP_VERSION = "0.8.0"
+BUILD_DATE = "2026-04-28"
+DB_SCHEMA_VERSION = "20260428031"
 
 MODULE_VERSIONS = {
     "auth": "1.0.0",
@@ -14,7 +14,7 @@ MODULE_VERSIONS = {
     "exercises": "2.1.0",  # Varianten-CRUD API + UI; Listen mit include_variants
     "training_units": "0.1.0",
     "training_programs": "0.1.0",
-    "planning": "0.2.0",
+    "planning": "0.3.0",
     "import_wiki": "1.0.0",
     "admin": "1.0.0",
     "membership": "1.0.0",
@@ -24,7 +24,14 @@ MODULE_VERSIONS = {
 
 CHANGELOG = [
     {
-        "version": "0.7.9",
+        "version": "0.8.0",
+        "date": "2026-04-28",
+        "changes": [
+            "DB 031: Trainingsvorlagen (Sektionen) + Struktur pro Einheit (Sektionen, Übungen/Notizen, Dauer)",
+            "API: /api/training-plan-templates CRUD; Trainingseinheiten mit sections[] + plan_template_id",
+            "Trainingsplanung UI: Abschnitte, Zwischen-Anmerkungen, Vorlagen auswählen / speichern",
+        ],
+    },
         "date": "2026-04-27",
         "changes": [
             "Übungsvarianten: POST/PUT/DELETE /api/exercises/{id}/variants + reorder",

frontend/src/utils/api.js

@@ -790,6 +790,32 @@ export async function quickCreateTrainingUnit(data) {
   })
 }
 
+export async function listTrainingPlanTemplates() {
+  return request('/api/training-plan-templates')
+}
+
+export async function getTrainingPlanTemplate(id) {
+  return request(`/api/training-plan-templates/${id}`)
+}
+
+export async function createTrainingPlanTemplate(data) {
+  return request('/api/training-plan-templates', {
+    method: 'POST',
+    body: JSON.stringify(data)
+  })
+}
+
+export async function updateTrainingPlanTemplate(id, data) {
+  return request(`/api/training-plan-templates/${id}`, {
+    method: 'PUT',
+    body: JSON.stringify(data)
+  })
+}
+
+export async function deleteTrainingPlanTemplate(id) {
+  return request(`/api/training-plan-templates/${id}`, { method: 'DELETE' })
+}
+
 // ============================================================================
 // Version & Health
 // ============================================================================
@@ -863,6 +889,11 @@ export const api = {
   updateTrainingUnit,
   deleteTrainingUnit,
   quickCreateTrainingUnit,
+  listTrainingPlanTemplates,
+  getTrainingPlanTemplate,
+  createTrainingPlanTemplate,
+  updateTrainingPlanTemplate,
+  deleteTrainingPlanTemplate,
 
   // Catalogs
   listFocusAreas,

frontend/src/version.js

@@ -10,7 +10,7 @@ export const PAGE_VERSIONS = {
   ExercisesPage: "1.1.0",  // Updated: Katalog-Integration
   ClubsPage: "1.0.0",
   SkillsPage: "1.0.0",
-  TrainingPlanningPage: "1.0.0",
+  TrainingPlanningPage: "1.1.0",
   AdminCatalogsPage: "2.2.0",  // Updated: Frontend API Calls & Field Names für renamed tables
   TrainerContextsPage: "1.0.0",  // New: Trainer-Kontext-Verwaltung
 }