feat: Add workout program management

- Create database tables: workout_program, program_session, person_program_assignment.
- Add Flask blueprint `routes/programs.py` with routes for creating, listing, viewing, and deleting programs.
- Implement program creation form (`templates/program_create.html`):
    - Allows defining program name, description, and multiple sessions.
    - Each session includes a name and dynamically added exercise selections.
    - Uses `tail.select` for searchable exercise dropdowns.
    - JavaScript handles dynamic addition/removal of sessions and exercises.
- Implement backend logic for program creation:
    - Parses form data including multiple exercises per session.
    - Automatically finds or creates non-person-specific tags based on selected exercises for each session.
    - Saves program and session data, linking sessions to appropriate tags.
- Implement program list view (`templates/program_list.html`):
    - Displays existing programs.
    - Includes HTMX-enabled delete button for each program.
    - Links program names to the view page using HTMX for dynamic loading.
- Implement program detail view (`templates/program_view.html`):
    - Displays program name, description, and sessions.
    - Parses session tag filters to retrieve and display associated exercises.
- Update changelog with details of the new feature.

templates/changelog/changelog.html

@@ -10,6 +10,25 @@
         <div class="prose max-w-none">
             <p>Updates and changes to the site will be documented here, with the most recent changes listed first.</p>
 
+            <!-- New Entry for Workout Programs -->
+            <hr class="my-6">
+            <h2 class="text-xl font-semibold mb-2">April 24, 2025</h2>
+            <ul class="list-disc pl-5 space-y-1">
+                <li>Added Workout Program Management:</li>
+                <ul class="list-disc pl-5 space-y-1">
+                    <li>Created new database tables (`workout_program`, `program_session`, `person_program_assignment`).
+                    </li>
+                    <li>Added a new section under `/programs/` to create, view, and list workout program templates.</li>
+                    <li>Program creation allows defining multiple sessions, each with a name and a list of selected
+                        exercises.</li>
+                    <li>The system automatically finds or creates non-person-specific tags based on the selected
+                        exercises for each session.</li>
+                    <li>Added functionality to delete programs from the list view.</li>
+                    <li>Implemented HTMX for dynamic loading of the program view page from the list page.</li>
+                    <li>Integrated `tail.select` for searchable exercise dropdowns in the program creation form.</li>
+                </ul>
+            </ul>
+
             <!-- New Entry for SQL Explorer SVG Plots -->
             <hr class="my-6">
             <h2 class="text-xl font-semibold mb-2">April 19, 2025</h2>