Add 'Add to my feed' button to public feed for logged-in users

When viewing the public feed (or any episode list), logged-in users
now see: - 'Add to my feed' button if episode is not in their feed -
'In your feed' button (disabled) if they already have it

Implementation: - Added user_button logic to EpisodeList component
- Checks Core.Database.user_has_episode() for each episode - Shows
blue outline button for add action - Shows gray disabled button when
already added - Buttons displayed in flex row with admin buttons

Updated add_episode_to_feed endpoint: - Changed to redirect back
to referer page after adding - Uses HX-Redirect to reload the page
showing updated state - This allows the button to change from 'Add
to my feed' to 'In your feed'

All tests passing (48 tests)

1 files changed, 47 insertions, 7 deletions

diff --git a/Biz/PodcastItLater/Web.py b/Biz/PodcastItLater/Web.py
index ab46811..6d00649 100644
--- a/Biz/PodcastItLater/Web.py
+++ b/Biz/PodcastItLater/Web.py
@@ -570,6 +570,42 @@ class EpisodeList(Component[AnyChildren, EpisodeListAttrs]):
                         ],
                     )
 
+            # "Add to my feed" button for logged-in users
+            user_button: html.div | html.button = html.div()
+            if user:
+                # Check if user already has this episode
+                user_has_episode = Core.Database.user_has_episode(
+                    user["id"],
+                    episode["id"],
+                )
+                if user_has_episode:
+                    user_button = html.button(
+                        html.i(classes=["bi", "bi-check-circle-fill", "me-1"]),
+                        "In your feed",
+                        disabled=True,
+                        classes=[
+                            "btn",
+                            "btn-sm",
+                            "btn-secondary",
+                            "mt-2",
+                            "ms-2",
+                        ],
+                    )
+                else:
+                    user_button = html.button(
+                        html.i(classes=["bi", "bi-plus-circle", "me-1"]),
+                        "Add to my feed",
+                        hx_post=f"/episode/{episode['id']}/add-to-feed",
+                        hx_swap="none",
+                        classes=[
+                            "btn",
+                            "btn-sm",
+                            "btn-outline-primary",
+                            "mt-2",
+                            "ms-2",
+                        ],
+                    )
+
             episode_items.append(
                 html.div(
                     html.div(
@@ -618,8 +654,12 @@ class EpisodeList(Component[AnyChildren, EpisodeListAttrs]):
                         )
                         if episode.get("original_url")
                         else html.div(),
-                        # Admin button to add/remove from public feed
-                        admin_button,
+                        # Buttons row (admin and user buttons)
+                        html.div(
+                            admin_button,
+                            user_button,
+                            classes=["d-flex", "flex-wrap"],
+                        ),
                         classes=["card-body"],
                     ),
                     classes=["card", "mb-3"],
@@ -1707,13 +1747,13 @@ def add_episode_to_feed(request: Request, episode_id: int) -> Response:
     # Track the "added" event
     Core.Database.track_episode_metric(episode_id, "added", user_id)
 
+    # Reload the current page to show updated button state
+    # Check referer to determine where to redirect
+    referer = request.headers.get("referer", "/")
     return Response(
-        '<div class="alert alert-success">'
-        '<i class="bi bi-check-circle me-2"></i>'
-        "Added to your feed! "
-        '<a href="/" class="alert-link">View your feed</a>'
-        "</div>",
+        "",
         status_code=200,
+        headers={"HX-Redirect": referer},
     )