feat(lidarr): typed HTTP client for v1 API (lookup, add, profiles, ping)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

internal/lidarr/testdata/lookup_album.json

@@ -0,0 +1,21 @@
+[
+  {
+    "foreignAlbumId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
+    "title": "Music Has the Right to Children",
+    "artistName": "Boards of Canada",
+    "releaseDate": "1998-04-27",
+    "trackCount": 18,
+    "images": [
+      {"coverType": "cover", "remoteUrl": "https://example.invalid/mhtrtc.jpg", "url": ""},
+      {"coverType": "poster", "remoteUrl": "https://example.invalid/mhtrtc-poster.jpg", "url": ""}
+    ]
+  },
+  {
+    "foreignAlbumId": "b2c3d4e5-f6a7-8901-bcde-f12345678901",
+    "title": "Geogaddi",
+    "artistName": "Boards of Canada",
+    "releaseDate": "2002-02-11",
+    "trackCount": 23,
+    "images": []
+  }
+]

internal/lidarr/testdata/lookup_artist.json

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+[
+  {
+    "foreignArtistId": "069b64b6-7884-4f6a-94cc-e4c1d6c87a01",
+    "artistName": "Boards of Canada",
+    "genres": ["Electronic", "IDM"],
+    "albumCount": 18,
+    "images": [
+      {"coverType": "poster", "remoteUrl": "https://example.invalid/boc.jpg", "url": ""},
+      {"coverType": "banner", "remoteUrl": "https://example.invalid/boc-banner.jpg", "url": ""}
+    ]
+  },
+  {
+    "foreignArtistId": "f54ba20c-7da3-4b8a-9b12-22f09b9e2c1c",
+    "artistName": "Bored of Education",
+    "genres": [],
+    "albumCount": 0,
+    "images": []
+  }
+]

internal/lidarr/testdata/lookup_track.json

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+[
+  {
+    "foreignTrackId": "t1a2b3c4-d5e6-7890-abcd-ef1234567890",
+    "title": "Roygbiv",
+    "albumTitle": "Music Has the Right to Children",
+    "artistName": "Boards of Canada"
+  },
+  {
+    "foreignTrackId": "t2b3c4d5-e6f7-8901-bcde-f12345678901",
+    "title": "Aquarius",
+    "albumTitle": "Music Has the Right to Children",
+    "artistName": "Boards of Canada"
+  }
+]

internal/lidarr/testdata/quality_profiles.json

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+[
+  {"id": 1, "name": "Any"},
+  {"id": 2, "name": "Lossless"},
+  {"id": 3, "name": "Standard"}
+]

internal/lidarr/testdata/root_folders.json

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+[
+  {"path": "/music", "accessible": true, "freeSpace": 107374182400},
+  {"path": "/music-lossy", "accessible": true, "freeSpace": 53687091200},
+  {"path": "/music-offline", "accessible": false, "freeSpace": 0}
+]