Add podcast subscriptions with My Podcasts tab

- Subscribe/unsubscribe button on podcast cards and episode list header
- "My Podcasts" tab shows subscribed podcasts, opens first if subscriptions exist
- Subscriptions persisted in localStorage
- Tab shows subscription count
- Empty state guides to search/trending

src/components/podcast/EpisodeList.tsx

@@ -3,6 +3,23 @@ import type { PodcastShow, PodcastEpisode } from "../../types/podcast";
 import { getEpisodes } from "../../lib/podcast";
 import { usePodcastStore } from "../../stores/podcast";
 
+function SubscribeButton({ show }: { show: PodcastShow }) {
+  const subscribed = usePodcastStore((s) => s.isSubscribed(show.feedUrl));
+  const { subscribe, unsubscribe } = usePodcastStore.getState();
+  return (
+    <button
+      onClick={() => subscribed ? unsubscribe(show.feedUrl) : subscribe(show)}
+      className={`shrink-0 text-[11px] px-3 py-1 rounded-sm border transition-colors ${
+        subscribed
+          ? "border-accent/40 text-accent"
+          : "border-border text-text-muted hover:text-accent hover:border-accent/40"
+      }`}
+    >
+      {subscribed ? "subscribed" : "+ subscribe"}
+    </button>
+  );
+}
+
 function formatDuration(seconds: number): string {
   if (!seconds) return "";
   const h = Math.floor(seconds / 3600);
@@ -60,9 +77,14 @@ export function EpisodeList({ show, onBack }: EpisodeListProps) {
             onError={(e) => { (e.target as HTMLImageElement).style.display = "none"; }}
           />
         )}
-        <div className="min-w-0">
-          <h2 className="text-[15px] text-text font-semibold">{show.title}</h2>
-          <div className="text-[12px] text-text-muted">{show.author}</div>
+        <div className="min-w-0 flex-1">
+          <div className="flex items-start justify-between gap-2">
+            <div>
+              <h2 className="text-[15px] text-text font-semibold">{show.title}</h2>
+              <div className="text-[12px] text-text-muted">{show.author}</div>
+            </div>
+            <SubscribeButton show={show} />
+          </div>
           {show.description && (
             <div className="text-[11px] text-text-dim mt-1 line-clamp-3">
               {show.description.replace(/<[^>]+>/g, "").slice(0, 200)}

src/components/podcast/PodcastCard.tsx

@@ -1,4 +1,5 @@
 import type { PodcastShow } from "../../types/podcast";
+import { usePodcastStore } from "../../stores/podcast";
 
 interface PodcastCardProps {
   show: PodcastShow;
@@ -6,25 +7,27 @@ interface PodcastCardProps {
 }
 
 export function PodcastCard({ show, onClick }: PodcastCardProps) {
+  const subscribed = usePodcastStore((s) => s.isSubscribed(show.feedUrl));
+  const { subscribe, unsubscribe } = usePodcastStore.getState();
+
   return (
-    <button
-      onClick={onClick}
-      className="flex items-start gap-3 p-3 rounded-sm bg-bg-raised border border-border hover:bg-bg-hover transition-colors text-left w-full"
-    >
-      {show.artworkUrl ? (
-        <img
-          src={show.artworkUrl}
-          alt=""
-          className="w-16 h-16 rounded-sm object-cover shrink-0 bg-bg"
-          loading="lazy"
-          onError={(e) => { (e.target as HTMLImageElement).style.display = "none"; }}
-        />
-      ) : (
-        <div className="w-16 h-16 rounded-sm bg-bg flex items-center justify-center shrink-0 text-2xl text-text-dim">
-          P
-        </div>
-      )}
-      <div className="min-w-0 flex-1">
+    <div className="flex items-start gap-3 p-3 rounded-sm bg-bg-raised border border-border hover:bg-bg-hover transition-colors text-left w-full">
+      <button onClick={onClick} className="shrink-0">
+        {show.artworkUrl ? (
+          <img
+            src={show.artworkUrl}
+            alt=""
+            className="w-16 h-16 rounded-sm object-cover bg-bg"
+            loading="lazy"
+            onError={(e) => { (e.target as HTMLImageElement).style.display = "none"; }}
+          />
+        ) : (
+          <div className="w-16 h-16 rounded-sm bg-bg flex items-center justify-center text-2xl text-text-dim">
+            P
+          </div>
+        )}
+      </button>
+      <button onClick={onClick} className="min-w-0 flex-1 text-left">
         <div className="text-[13px] text-text font-medium truncate">{show.title}</div>
         <div className="text-[11px] text-text-muted truncate">{show.author}</div>
         {show.description && (
@@ -32,7 +35,21 @@ export function PodcastCard({ show, onClick }: PodcastCardProps) {
             {show.description.replace(/<[^>]+>/g, "").slice(0, 120)}
           </div>
         )}
-      </div>
-    </button>
+      </button>
+      <button
+        onClick={(e) => {
+          e.stopPropagation();
+          if (subscribed) unsubscribe(show.feedUrl);
+          else subscribe(show);
+        }}
+        className={`shrink-0 text-[10px] px-2 py-1 rounded-sm border transition-colors ${
+          subscribed
+            ? "border-accent/40 text-accent"
+            : "border-border text-text-muted hover:text-accent hover:border-accent/40"
+        }`}
+      >
+        {subscribed ? "subscribed" : "+ subscribe"}
+      </button>
+    </div>
   );
 }

src/components/podcast/PodcastsView.tsx

@@ -1,20 +1,24 @@
 import { useState, useEffect, useCallback } from "react";
 import type { PodcastShow } from "../../types/podcast";
 import { searchPodcasts, getTrending } from "../../lib/podcast";
+import { usePodcastStore } from "../../stores/podcast";
 import { PodcastCard } from "./PodcastCard";
 import { EpisodeList } from "./EpisodeList";
 
-type Tab = "trending" | "search";
+type Tab = "subscriptions" | "trending" | "search";
 
 export function PodcastsView() {
-  const [tab, setTab] = useState<Tab>("trending");
+  const subscriptions = usePodcastStore((s) => s.subscriptions);
+  const hasSubscriptions = subscriptions.length > 0;
+  const [tab, setTab] = useState<Tab>(hasSubscriptions ? "subscriptions" : "trending");
   const [query, setQuery] = useState("");
   const [shows, setShows] = useState<PodcastShow[]>([]);
   const [loading, setLoading] = useState(false);
   const [selectedShow, setSelectedShow] = useState<PodcastShow | null>(null);
 
-  // Load trending on mount
+  // Load trending on mount if no subscriptions
   useEffect(() => {
+    if (hasSubscriptions) return;
     setLoading(true);
     getTrending().then((results) => {
       setShows(results);
@@ -47,6 +51,8 @@ export function PodcastsView() {
     return <EpisodeList show={selectedShow} onBack={() => setSelectedShow(null)} />;
   }
 
+  const displayShows = tab === "subscriptions" ? subscriptions : shows;
+
   return (
     <div className="h-full flex flex-col">
       {/* Header */}
@@ -74,7 +80,7 @@ export function PodcastsView() {
 
         {/* Tabs */}
         <div className="flex gap-4">
-          {(["trending", "search"] as Tab[]).map((t) => (
+          {(["subscriptions", "trending", "search"] as Tab[]).map((t) => (
             <button
               key={t}
               onClick={() => handleTabChange(t)}
@@ -84,7 +90,7 @@ export function PodcastsView() {
                   : "text-text-muted border-transparent hover:text-text"
               }`}
             >
-              {t === "trending" ? "Trending" : "Search Results"}
+              {t === "subscriptions" ? `My Podcasts${subscriptions.length > 0 ? ` (${subscriptions.length})` : ""}` : t === "trending" ? "Trending" : "Search Results"}
             </button>
           ))}
         </div>
@@ -92,15 +98,32 @@ export function PodcastsView() {
 
       {/* Results */}
       <div className="flex-1 overflow-y-auto p-4">
-        {loading ? (
+        {tab === "subscriptions" ? (
+          subscriptions.length === 0 ? (
+            <div className="text-center py-12">
+              <p className="text-text-dim text-[13px] mb-2">No subscriptions yet.</p>
+              <p className="text-text-dim text-[11px] opacity-60">Search for a podcast or browse trending to subscribe.</p>
+            </div>
+          ) : (
+            <div className="grid grid-cols-1 gap-2">
+              {subscriptions.map((show, i) => (
+                <PodcastCard
+                  key={show.feedUrl ?? i}
+                  show={show}
+                  onClick={() => setSelectedShow(show)}
+                />
+              ))}
+            </div>
+          )
+        ) : loading ? (
           <div className="text-text-dim text-[12px]">Loading...</div>
-        ) : shows.length === 0 ? (
+        ) : displayShows.length === 0 ? (
           <div className="text-text-dim text-[12px]">
             {tab === "search" ? "No results. Try a different search." : "No trending podcasts found."}
           </div>
         ) : (
           <div className="grid grid-cols-1 gap-2">
-            {shows.map((show, i) => (
+            {displayShows.map((show, i) => (
               <PodcastCard
                 key={show.podcastIndexId ?? i}
                 show={show}