domain: introduce provider-neutral media model (phase 1)

Establish src-tauri/src/domain/ as the single source of truth for the
media model, with all Jellyfin translation isolated in from_jellyfin.rs.
Adds MediaKind enum and neutral duration_ms/image_id fields to MediaItem
as additive, defaulted dual-carry alongside the legacy Jellyfin-named
fields, so nothing breaks while the frontend migrates off them.

- domain/media.rs: canonical MediaKind (closed enum, replaces stringly
  item_type), Default = Other so unknown/defaulted items are inert.
- domain/from_jellyfin.rs: total, panic-free item_type -> MediaKind
  classification (all audited types + person subroles) and ticks->ms.
- MediaItem gains kind/duration_ms/image_id, populated at both mapping
  seams (online to_media_item, offline cached_item_to_media_item) and
  the synthesized-album/person sites.
- Regenerated bindings.ts: frontend now HAS the neutral model available.

Phase 1 of docs/specs/frontend-domain-model.md. No frontend behaviour
change yet; wire shape is a superset of before.

Rust 456 tests, frontend 644 tests, check + check:boundary all green.

bun.lock

@@ -18,6 +18,7 @@
         "@tailwindcss/vite": "^4.1.18",
         "@tauri-apps/cli": "^2",
         "@testing-library/svelte": "^5.3.1",
+        "@vitest/coverage-v8": "^4.0.18",
         "@vitest/ui": "^4.0.16",
         "@wdio/cli": "^9.5.0",
         "@wdio/local-runner": "^9.5.0",
@@ -30,7 +31,7 @@
         "tailwindcss": "^4.1.18",
         "typescript": "~5.6.2",
         "vite": "^6.0.3",
-        "vitest": "^4.0.16",
+        "vitest": ">=1.0.0 <5.0.0",
         "webdriverio": "^9.5.0",
       },
     },
@@ -46,10 +47,18 @@
 
     "@babel/code-frame": ["@babel/code-frame@7.27.1", "", { "dependencies": { "@babel/helper-validator-identifier": "^7.27.1", "js-tokens": "^4.0.0", "picocolors": "^1.1.1" } }, "sha512-cjQ7ZlQ0Mv3b47hABuTevyTuYN4i+loJKGeV9flcCgIK37cCXRh+L1bd3iBHlynerhQ7BhCkn2BPbQUL+rGqFg=="],
 
+    "@babel/helper-string-parser": ["@babel/helper-string-parser@7.29.7", "", {}, "sha512-Pb5ijPrZ89GDH8223L4UP8i6QApWxs04RbPQJTeWDV0/keR2E36MeKnyr6LYmUUvqRRI+Iv87SuF1W6ErINzYw=="],
+
     "@babel/helper-validator-identifier": ["@babel/helper-validator-identifier@7.28.5", "", {}, "sha512-qSs4ifwzKJSV39ucNjsvc6WVHs6b7S03sOh2OcHF9UHfVPqWWALUsNUVzhSBiItjRZoLHx7nIarVjqKVusUZ1Q=="],
 
+    "@babel/parser": ["@babel/parser@7.29.7", "", { "dependencies": { "@babel/types": "^7.29.7" }, "bin": "./bin/babel-parser.js" }, "sha512-hnORnjP/1P/zFEndoeX+n+t1RwWRJiJpM/jO7FW32Kn9r5+sJB2JWOdYo4L6k78j15eCwY3Gm/7364B1EMwtNg=="],
+
     "@babel/runtime": ["@babel/runtime@7.28.4", "", {}, "sha512-Q/N6JNWvIvPnLDvjlE1OUBLPQHH6l3CltCEsHIujp45zQUSSh8K+gHnaEX45yAT1nyngnINhvWtzN+Nb9D8RAQ=="],
 
+    "@babel/types": ["@babel/types@7.29.7", "", { "dependencies": { "@babel/helper-string-parser": "^7.29.7", "@babel/helper-validator-identifier": "^7.29.7" } }, "sha512-4zBIxpPzowiZpusoFkyGVwakdRJUyuH5PxQ/PrqghfdFWWasvnCdPfQXHrenDai+gyLARulZjZowCOj6fjT4pA=="],
+
+    "@bcoe/v8-coverage": ["@bcoe/v8-coverage@1.0.2", "", {}, "sha512-6zABk/ECA/QYSCQ1NGiVwwbQerUCZ+TQbp64Q3AgmfNvurHH0j8TtXa1qbShXA6qqkpAj4V5W8pP6mLe1mcMqA=="],
+
     "@csstools/color-helpers": ["@csstools/color-helpers@5.1.0", "", {}, "sha512-S11EXWJyy0Mz5SYvRmY8nJYTFFd1LCNV+7cXyAgQtOOuzb4EsgfqDufL+9esx72/eLhsRdGZwaldu/h+E4t4BA=="],
 
     "@csstools/css-calc": ["@csstools/css-calc@2.1.4", "", { "peerDependencies": { "@csstools/css-parser-algorithms": "^3.0.5", "@csstools/css-tokenizer": "^3.0.4" } }, "sha512-3N8oaj+0juUw/1H3YwmDDJXCgTB1gKU6Hc/bB502u9zR0q2vd786XJH9QfrKIEgFlZmhZiq6epXl4rHqhzsIgQ=="],
@@ -348,6 +357,8 @@
 
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+    "@vitest/coverage-v8": ["@vitest/coverage-v8@4.1.10", "", { "dependencies": { "@bcoe/v8-coverage": "^1.0.2", "@vitest/utils": "4.1.10", "ast-v8-to-istanbul": "^1.0.0", "istanbul-lib-coverage": "^3.2.2", "istanbul-lib-report": "^3.0.1", "istanbul-reports": "^3.2.0", "magicast": "^0.5.2", "obug": "^2.1.1", "std-env": "^4.0.0-rc.1", "tinyrainbow": "^3.1.0" }, "peerDependencies": { "@vitest/browser": "4.1.10", "vitest": "4.1.10" }, "optionalPeers": ["@vitest/browser"] }, "sha512-IM49HmthevbgAO4anp1hwtoT9wYe59w0LR00gr+eagHE+ZJ5lK4sLPeO0ubgoJcwLk6dehU3R24N+FbEEKDc8g=="],
+
     "@vitest/expect": ["@vitest/expect@4.0.16", "", { "dependencies": { "@standard-schema/spec": "^1.0.0", "@types/chai": "^5.2.2", "@vitest/spy": "4.0.16", "@vitest/utils": "4.0.16", "chai": "^6.2.1", "tinyrainbow": "^3.0.3" } }, "sha512-eshqULT2It7McaJkQGLkPjPjNph+uevROGuIMJdG3V+0BSR2w9u6J9Lwu+E8cK5TETlfou8GRijhafIMhXsimA=="],
 
     "@vitest/mocker": ["@vitest/mocker@4.0.16", "", { "dependencies": { "@vitest/spy": "4.0.16", "estree-walker": "^3.0.3", "magic-string": "^0.30.21" }, "peerDependencies": { "msw": "^2.4.9", "vite": "^6.0.0 || ^7.0.0-0" }, "optionalPeers": ["msw", "vite"] }, "sha512-yb6k4AZxJTB+q9ycAvsoxGn+j/po0UaPgajllBgt1PzoMAAmJGYFdDk0uCcRcxb3BrME34I6u8gHZTQlkqSZpg=="],
@@ -362,7 +373,7 @@
 
     "@vitest/ui": ["@vitest/ui@4.0.16", "", { "dependencies": { "@vitest/utils": "4.0.16", "fflate": "^0.8.2", "flatted": "^3.3.3", "pathe": "^2.0.3", "sirv": "^3.0.2", "tinyglobby": "^0.2.15", "tinyrainbow": "^3.0.3" }, "peerDependencies": { "vitest": "4.0.16" } }, "sha512-rkoPH+RqWopVxDnCBE/ysIdfQ2A7j1eDmW8tCxxrR9nnFBa9jKf86VgsSAzxBd1x+ny0GC4JgiD3SNfRHv3pOg=="],
 
-    "@vitest/utils": ["@vitest/utils@4.0.16", "", { "dependencies": { "@vitest/pretty-format": "4.0.16", "tinyrainbow": "^3.0.3" } }, "sha512-h8z9yYhV3e1LEfaQ3zdypIrnAg/9hguReGZoS7Gl0aBG5xgA410zBqECqmaF/+RkTggRsfnzc1XaAHA6bmUufA=="],
+    "@vitest/utils": ["@vitest/utils@4.1.10", "", { "dependencies": { "@vitest/pretty-format": "4.1.10", "convert-source-map": "^2.0.0", "tinyrainbow": "^3.1.0" } }, "sha512-fy9am/HWxbaGt/Sawrp90vt6Y6jQwf1RX77cz3uwoJwJVMli/e1IEwRPnMNJ7vKfPTwo0diXifkpPvwH9v7nGA=="],
 
     "@wdio/cli": ["@wdio/cli@9.23.2", "", { "dependencies": { "@vitest/snapshot": "^2.1.1", "@wdio/config": "9.23.2", "@wdio/globals": "9.23.0", "@wdio/logger": "9.18.0", "@wdio/protocols": "9.23.2", "@wdio/types": "9.23.2", "@wdio/utils": "9.23.2", "async-exit-hook": "^2.0.1", "chalk": "^5.4.1", "chokidar": "^4.0.0", "create-wdio": "9.21.0", "dotenv": "^17.2.0", "import-meta-resolve": "^4.0.0", "lodash.flattendeep": "^4.4.0", "lodash.pickby": "^4.6.0", "lodash.union": "^4.6.0", "read-pkg-up": "^10.0.0", "tsx": "^4.7.2", "webdriverio": "9.23.2", "yargs": "^17.7.2" }, "bin": { "wdio": "bin/wdio.js" } }, "sha512-D6KZGomfNmjFhSWYdfR7Ojik5qWEpPoR4g5LQPzbFwiii/RkTudLcMFcCO6s7HTMLDQDWryOStV2KK6KqrIF8A=="],
 
@@ -422,6 +433,8 @@
 
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+    "ast-v8-to-istanbul": ["ast-v8-to-istanbul@1.0.5", "", { "dependencies": { "@jridgewell/trace-mapping": "^0.3.31", "estree-walker": "^3.0.3", "js-tokens": "^10.0.0" } }, "sha512-UPAgKJFSEGMWSDr3LX4tqnAb4f7KGT8O40Tyx8wbYmmZ/yn58lNCm8h3svs3eXgiGd5AXxz8NDOvXWvicq+rJA=="],
+
     "async": ["async@3.2.6", "", {}, "sha512-htCUDlxyyCLMgaM3xXg0C0LW2xqfuQ6p05pCEIsXuyQ+a1koYKTuBMzRNwmybfLgvJDMd0r1LTn4+E0Ti6C2AA=="],
 
     "async-exit-hook": ["async-exit-hook@2.0.1", "", {}, "sha512-NW2cX8m1Q7KPA7a5M2ULQeZ2wR5qI5PAbw5L0UOMxdioVk9PMZ0h1TmyZEkPYrCvYjDlFICusOu1dlEKAAeXBw=="],
@@ -498,6 +511,8 @@
 
     "concat-map": ["concat-map@0.0.1", "", {}, "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg=="],
 
+    "convert-source-map": ["convert-source-map@2.0.0", "", {}, "sha512-Kvp459HrV2FEJ1CAsi1Ku+MY3kasH19TFykTz2xWmMeq6bk2NU3XXvfJ+Q61m0xktWwt+1HSYf3JZsTms3aRJg=="],
+
     "cookie": ["cookie@0.6.0", "", {}, "sha512-U71cyTamuh1CRNCfpGY6to28lxvNwPG4Guz/EVjgf3Jmzv0vlDp1atT9eS5dDjMYHucpHbWns6Lwf3BKz6svdw=="],
 
     "core-util-is": ["core-util-is@1.0.3", "", {}, "sha512-ZQBvi1DcpJ4GDqanjucZ2Hj3wEO5pZDS89BWbkcrvdxksJorwUDDZamX9ldFkp9aw2lmBDLgkObEA4DWNJ9FYQ=="],
@@ -686,6 +701,8 @@
 
     "html-encoding-sniffer": ["html-encoding-sniffer@6.0.0", "", { "dependencies": { "@exodus/bytes": "^1.6.0" } }, "sha512-CV9TW3Y3f8/wT0BRFc1/KAVQ3TUHiXmaAb6VW9vtiMFf7SLoMd1PdAc4W3KFOFETBJUb90KatHqlsZMWV+R9Gg=="],
 
+    "html-escaper": ["html-escaper@2.0.2", "", {}, "sha512-H2iMtd0I4Mt5eYiapRdIDjp+XzelXQ0tFE4JS7YFwFevXXMmOp9myNrUvCg0D6ws8iqkRPBfKHgbwig1SmlLfg=="],
+
     "htmlfy": ["htmlfy@0.8.1", "", {}, "sha512-xWROBw9+MEGwxpotll0h672KCaLrKKiCYzsyN8ZgL9cQbVumFnyvsk2JqiB9ELAV1GLj1GG/jxZUjV9OZZi/yQ=="],
 
     "htmlparser2": ["htmlparser2@10.1.0", "", { "dependencies": { "domelementtype": "^2.3.0", "domhandler": "^5.0.3", "domutils": "^3.2.2", "entities": "^7.0.1" } }, "sha512-VTZkM9GWRAtEpveh7MSF6SjjrpNVNNVJfFup7xTY3UpFtm67foy9HDVXneLtFVt4pMz5kZtgNcvCniNFb1hlEQ=="],
@@ -738,6 +755,12 @@
 
     "isexe": ["isexe@3.1.1", "", {}, "sha512-LpB/54B+/2J5hqQ7imZHfdU31OlgQqx7ZicVlkm9kzg9/w8GKLEcFfJl/t7DCEDueOyBAD6zCCwTO6Fzs0NoEQ=="],
 
+    "istanbul-lib-coverage": ["istanbul-lib-coverage@3.2.2", "", {}, "sha512-O8dpsF+r0WV/8MNRKfnmrtCWhuKjxrq2w+jpzBL5UZKTi2LeVWnWOmWRxFlesJONmc+wLAGvKQZEOanko0LFTg=="],
+
+    "istanbul-lib-report": ["istanbul-lib-report@3.0.1", "", { "dependencies": { "istanbul-lib-coverage": "^3.0.0", "make-dir": "^4.0.0", "supports-color": "^7.1.0" } }, "sha512-GCfE1mtsHGOELCU8e/Z7YWzpmybrx/+dSTfLrvY8qRmaY6zXTKWn6WQIjaAFw069icm6GVMNkgu0NzI4iPZUNw=="],
+
+    "istanbul-reports": ["istanbul-reports@3.2.0", "", { "dependencies": { "html-escaper": "^2.0.0", "istanbul-lib-report": "^3.0.0" } }, "sha512-HGYWWS/ehqTV3xN10i23tkPkpH46MLCIMFNCaaKNavAXTF1RkqxawEPtnjnGZ6XKSInBKkiOA5BKS+aZiY3AvA=="],
+
     "jackspeak": ["jackspeak@3.4.3", "", { "dependencies": { "@isaacs/cliui": "^8.0.2" }, "optionalDependencies": { "@pkgjs/parseargs": "^0.11.0" } }, "sha512-OGlZQpz2yfahA/Rd1Y8Cd9SIEsqvXkLVoSw/cgwhnhFMDbsQFeZYoJJ7bIZBS9BcamUW96asq/npPWugM+RQBw=="],
 
     "jake": ["jake@10.9.4", "", { "dependencies": { "async": "^3.2.6", "filelist": "^1.0.4", "picocolors": "^1.1.1" }, "bin": { "jake": "bin/cli.js" } }, "sha512-wpHYzhxiVQL+IV05BLE2Xn34zW1S223hvjtqk0+gsPrwd/8JNLXJgZZM/iPFsYc1xyphF+6M6EvdE5E9MBGkDA=="],
@@ -756,7 +779,7 @@
 
     "jiti": ["jiti@2.6.1", "", { "bin": { "jiti": "lib/jiti-cli.mjs" } }, "sha512-ekilCSN1jwRvIbgeg/57YFh8qQDNbwDb9xT/qu2DAHbFFZUicIl4ygVaAvzveMhMVr3LnpSKTNnwt8PoOfmKhQ=="],
 
-    "js-tokens": ["js-tokens@4.0.0", "", {}, "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ=="],
+    "js-tokens": ["js-tokens@10.0.0", "", {}, "sha512-lM/UBzQmfJRo9ABXbPWemivdCW8V2G8FHaHdypQaIy523snUjog0W71ayWXTjiR+ixeMyVHN2XcpnTd/liPg/Q=="],
 
     "js-yaml": ["js-yaml@4.1.1", "", { "dependencies": { "argparse": "^2.0.1" }, "bin": { "js-yaml": "bin/js-yaml.js" } }, "sha512-qQKT4zQxXl8lLwBtHMWwaTcGfFOZviOJet3Oy/xmGk2gZH677CJM9EvtfdSkgWcATZhj/55JZ0rmy3myCT5lsA=="],
 
@@ -828,6 +851,10 @@
 
     "magic-string": ["magic-string@0.30.21", "", { "dependencies": { "@jridgewell/sourcemap-codec": "^1.5.5" } }, "sha512-vd2F4YUyEXKGcLHoq+TEyCjxueSeHnFxyyjNp80yg0XV4vUhnDer/lvvlqM/arB5bXQN5K2/3oinyCRyx8T2CQ=="],
 
+    "magicast": ["magicast@0.5.3", "", { "dependencies": { "@babel/parser": "^7.29.3", "@babel/types": "^7.29.0", "source-map-js": "^1.2.1" } }, "sha512-pVKE4UdSQ7DvHzivsCIFx2BJn1mHG6KsyrFcaxFx6tONdneEuThrDx0Cj3AMg58KyN4pzYT+LHOotxDQDjNvkw=="],
+
+    "make-dir": ["make-dir@4.0.0", "", { "dependencies": { "semver": "^7.5.3" } }, "sha512-hXdUTZYIVOt1Ex//jAQi+wTZZpUpwBj/0QsOzqegb3rGMMeJiSEu5xLHnYfBrRV4RH2+OCSOO95Is/7x1WJ4bw=="],
+
     "mdn-data": ["mdn-data@2.12.2", "", {}, "sha512-IEn+pegP1aManZuckezWCO+XZQDplx1366JoVhTpMpBB1sPey/SbveZQUosKiKiGYjg1wH4pMlNgXbCiYgihQA=="],
 
     "micromatch": ["micromatch@4.0.8", "", { "dependencies": { "braces": "^3.0.3", "picomatch": "^2.3.1" } }, "sha512-PXwfBhYu0hBCPw8Dn0E+WDYb7af3dSLVWKi3HGv84IdF4TyFoC0ysxFd0Goxw7nSv4T/PzEJQxsYsEiFCKo2BA=="],
@@ -1020,7 +1047,7 @@
 
     "stackback": ["stackback@0.0.2", "", {}, "sha512-1XMJE5fQo1jGH6Y/7ebnwPOBEkIEnT4QF32d5R1+VXdXveM0IBMJt8zfaxX1P3QhVwrYe+576+jkANtSS2mBbw=="],
 
-    "std-env": ["std-env@3.10.0", "", {}, "sha512-5GS12FdOZNliM5mAOxFRg7Ir0pWz8MdpYm6AY6VPkGpbA7ZzmbzNcBJQ0GPvvyWgcY7QAhCgf9Uy89I03faLkg=="],
+    "std-env": ["std-env@4.2.0", "", {}, "sha512-oCUKSupKTHX53EyjDtuZQ64pjLJ6yYCtpmEw0goYxtjG9KpbRe8KAsl2tBUGU9DyMcJ0RwJ8GqJAFzMXcXW1Rw=="],
 
     "stream-buffers": ["stream-buffers@3.0.3", "", {}, "sha512-pqMqwQCso0PBJt2PQmDO0cFj0lyqmiwOMiMSkVtRokl7e+ZTRYgDHKnuZNbqjiJXgsg4nuqtD/zxuo9KqTp0Yw=="],
 
@@ -1042,7 +1069,7 @@
 
     "strnum": ["strnum@2.1.2", "", {}, "sha512-l63NF9y/cLROq/yqKXSLtcMeeyOfnSQlfMSlzFt/K73oIaD8DGaQWd7Z34X9GPiKqP5rbSh84Hl4bOlLcjiSrQ=="],
 
-    "supports-color": ["supports-color@8.1.1", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-MpUEN2OodtUzxvKQl72cUF7RQ5EiHsGvSsVG0ia9c5RbWGL2CI4C7EpPS8UTBIplnlzZiNuV56w+FuNxy3ty2Q=="],
+    "supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
 
     "svelte": ["svelte@5.48.0", "", { "dependencies": { "@jridgewell/remapping": "^2.3.4", "@jridgewell/sourcemap-codec": "^1.5.0", "@sveltejs/acorn-typescript": "^1.0.5", "@types/estree": "^1.0.5", "acorn": "^8.12.1", "aria-query": "^5.3.1", "axobject-query": "^4.1.0", "clsx": "^2.1.1", "devalue": "^5.6.2", "esm-env": "^1.2.1", "esrap": "^2.2.1", "is-reference": "^3.0.3", "locate-character": "^3.0.0", "magic-string": "^0.30.11", "zimmerframe": "^1.1.2" } }, "sha512-+NUe82VoFP1RQViZI/esojx70eazGF4u0O/9ucqZ4rPcOZD+n5EVp17uYsqwdzjUjZyTpGKunHbDziW6AIAVkQ=="],
 
@@ -1068,7 +1095,7 @@
 
     "tinyglobby": ["tinyglobby@0.2.15", "", { "dependencies": { "fdir": "^6.5.0", "picomatch": "^4.0.3" } }, "sha512-j2Zq4NyQYG5XMST4cbs02Ak8iJUdxRM0XI5QyxXuZOzKOINmWurp3smXu3y5wDcJrptwpSjgXHzIQxR0omXljQ=="],
 
-    "tinyrainbow": ["tinyrainbow@3.0.3", "", {}, "sha512-PSkbLUoxOFRzJYjjxHJt9xro7D+iilgMX/C9lawzVuYiIdcihh9DXmVibBe8lmcFrRi/VzlPjBxbN7rH24q8/Q=="],
+    "tinyrainbow": ["tinyrainbow@3.1.0", "", {}, "sha512-Bf+ILmBgretUrdJxzXM0SgXLZ3XfiaUuOj/IKQHuTXip+05Xn+uyEYdVg0kYDipTBcLrCVyUzAPz7QmArb0mmw=="],
 
     "tldts": ["tldts@7.0.19", "", { "dependencies": { "tldts-core": "^7.0.19" }, "bin": { "tldts": "bin/cli.js" } }, "sha512-8PWx8tvC4jDB39BQw1m4x8y5MH1BcQ5xHeL2n7UVFulMPH/3Q0uiamahFJ3lXA0zO2SUyRXuVVbWSDmstlt9YA=="],
 
@@ -1166,6 +1193,10 @@
 
     "zip-stream": ["zip-stream@6.0.1", "", { "dependencies": { "archiver-utils": "^5.0.0", "compress-commons": "^6.0.2", "readable-stream": "^4.0.0" } }, "sha512-zK7YHHz4ZXpW89AHXUPbQVGKI7uvkd3hzusTdotCg1UxyaVtg0zFJSTfW/Dq5f7OBBVnq6cZIaC8Ti4hb6dtCA=="],
 
+    "@babel/code-frame/js-tokens": ["js-tokens@4.0.0", "", {}, "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ=="],
+
+    "@babel/types/@babel/helper-validator-identifier": ["@babel/helper-validator-identifier@7.29.7", "", {}, "sha512-qehxGkRj55h/ff8EMaJ+cYhyaKlHIxqYDn682wQD7RNp9UujOQsHog2uS0r2vzr4pW+sXf90NeeayjcNaX3fFg=="],
+
     "@inquirer/core/wrap-ansi": ["wrap-ansi@6.2.0", "", { "dependencies": { "ansi-styles": "^4.0.0", "string-width": "^4.1.0", "strip-ansi": "^6.0.0" } }, "sha512-r6lPcBGxZXlIcymEu7InxDMhdW0KDxpLgoFLcguasxCaJ/SOIZwINatK9KY/tf+ZrlywOKU0UDj3ATXUBfxJXA=="],
 
     "@inquirer/external-editor/iconv-lite": ["iconv-lite@0.7.2", "", { "dependencies": { "safer-buffer": ">= 2.1.2 < 3.0.0" } }, "sha512-im9DjEDQ55s9fL4EYzOAv0yMqmMBSZp6G0VvFyTMPKWxiSBHUj9NW/qqLmXUwXrrM7AvqSlTCfvqRb0cM8yYqw=="],
@@ -1190,10 +1221,24 @@
 
     "@testing-library/dom/aria-query": ["aria-query@5.3.0", "", { "dependencies": { "dequal": "^2.0.3" } }, "sha512-b0P0sZPKtyu8HkeRAfCq0IfURZK+SuwMjY1UXGBU27wpAiTwQAIlq56IbIO+ytk/JjS1fMR14ee5WBBfKi5J6A=="],
 
+    "@vitest/expect/@vitest/utils": ["@vitest/utils@4.0.16", "", { "dependencies": { "@vitest/pretty-format": "4.0.16", "tinyrainbow": "^3.0.3" } }, "sha512-h8z9yYhV3e1LEfaQ3zdypIrnAg/9hguReGZoS7Gl0aBG5xgA410zBqECqmaF/+RkTggRsfnzc1XaAHA6bmUufA=="],
+
+    "@vitest/expect/tinyrainbow": ["tinyrainbow@3.0.3", "", {}, "sha512-PSkbLUoxOFRzJYjjxHJt9xro7D+iilgMX/C9lawzVuYiIdcihh9DXmVibBe8lmcFrRi/VzlPjBxbN7rH24q8/Q=="],
+
+    "@vitest/pretty-format/tinyrainbow": ["tinyrainbow@3.0.3", "", {}, "sha512-PSkbLUoxOFRzJYjjxHJt9xro7D+iilgMX/C9lawzVuYiIdcihh9DXmVibBe8lmcFrRi/VzlPjBxbN7rH24q8/Q=="],
+
+    "@vitest/runner/@vitest/utils": ["@vitest/utils@4.0.16", "", { "dependencies": { "@vitest/pretty-format": "4.0.16", "tinyrainbow": "^3.0.3" } }, "sha512-h8z9yYhV3e1LEfaQ3zdypIrnAg/9hguReGZoS7Gl0aBG5xgA410zBqECqmaF/+RkTggRsfnzc1XaAHA6bmUufA=="],
+
     "@vitest/snapshot/@vitest/pretty-format": ["@vitest/pretty-format@2.1.9", "", { "dependencies": { "tinyrainbow": "^1.2.0" } }, "sha512-KhRIdGV2U9HOUzxfiHmY8IFHTdqtOhIzCpd8WRdJiE7D/HUcZVD0EgQCVjm+Q9gkUXWgBvMmTtZgIG48wq7sOQ=="],
 
     "@vitest/snapshot/pathe": ["pathe@1.1.2", "", {}, "sha512-whLdWMYL2TwI08hn8/ZqAbrVemu0LNaNNJZX73O6qaIdCTfXutsLhMkjdENX0qhsQ9uIimo4/aQOmXkoon2nDQ=="],
 
+    "@vitest/ui/@vitest/utils": ["@vitest/utils@4.0.16", "", { "dependencies": { "@vitest/pretty-format": "4.0.16", "tinyrainbow": "^3.0.3" } }, "sha512-h8z9yYhV3e1LEfaQ3zdypIrnAg/9hguReGZoS7Gl0aBG5xgA410zBqECqmaF/+RkTggRsfnzc1XaAHA6bmUufA=="],
+
+    "@vitest/ui/tinyrainbow": ["tinyrainbow@3.0.3", "", {}, "sha512-PSkbLUoxOFRzJYjjxHJt9xro7D+iilgMX/C9lawzVuYiIdcihh9DXmVibBe8lmcFrRi/VzlPjBxbN7rH24q8/Q=="],
+
+    "@vitest/utils/@vitest/pretty-format": ["@vitest/pretty-format@4.1.10", "", { "dependencies": { "tinyrainbow": "^3.1.0" } }, "sha512-W1HsjSH4MXQ9YfmmhLAoIYf1HRfekQCGngeIgcei6MP5QQGWUe0gkopdZQaVCFO+JDJMrAJGwa5pRpNpvy4P8Q=="],
+
     "@wdio/reporter/diff": ["diff@8.0.3", "", {}, "sha512-qejHi7bcSD4hQAZE0tNAawRK1ZtafHDmMTMkrrIGgSLl7hTnQHmKCeB45xAcbfTqK2zowkM3j3bHt/4b/ARbYQ=="],
 
     "anymatch/picomatch": ["picomatch@2.3.1", "", {}, "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA=="],
@@ -1260,6 +1305,8 @@
 
     "mocha/glob": ["glob@8.1.0", "", { "dependencies": { "fs.realpath": "^1.0.0", "inflight": "^1.0.4", "inherits": "2", "minimatch": "^5.0.1", "once": "^1.3.0" } }, "sha512-r8hpEjiQEYlF2QU0df3dS+nxxSIreXQS1qRhMJM0Q5NDdR386C7jb7Hwwod8Fgiuex+k0GFjgft18yvxm5XoCQ=="],
 
+    "mocha/supports-color": ["supports-color@8.1.1", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-MpUEN2OodtUzxvKQl72cUF7RQ5EiHsGvSsVG0ia9c5RbWGL2CI4C7EpPS8UTBIplnlzZiNuV56w+FuNxy3ty2Q=="],
+
     "mocha/yargs": ["yargs@16.2.0", "", { "dependencies": { "cliui": "^7.0.2", "escalade": "^3.1.1", "get-caller-file": "^2.0.5", "require-directory": "^2.1.1", "string-width": "^4.2.0", "y18n": "^5.0.5", "yargs-parser": "^20.2.2" } }, "sha512-D1mvvtDG0L5ft/jGWkLpG1+m0eQxOfaBvTNELraWj22wSVUMWxZUvYgJYcKh6jGGIkJFhH4IZPQhR4TKpc8mBw=="],
 
     "mocha/yargs-parser": ["yargs-parser@20.2.9", "", {}, "sha512-y11nGElTIV+CT3Zv9t7VKl+Q3hTQoT9a1Qzezhhl6Rp21gJ/IVTW7Z3y9EWXhuUBC2Shnf+DX0antecpAwSP8w=="],
@@ -1298,6 +1345,12 @@
 
     "vitest/@vitest/snapshot": ["@vitest/snapshot@4.0.16", "", { "dependencies": { "@vitest/pretty-format": "4.0.16", "magic-string": "^0.30.21", "pathe": "^2.0.3" } }, "sha512-sf6NcrYhYBsSYefxnry+DR8n3UV4xWZwWxYbCJUt2YdvtqzSPR7VfGrY0zsv090DAbjFZsi7ZaMi1KnSRyK1XA=="],
 
+    "vitest/@vitest/utils": ["@vitest/utils@4.0.16", "", { "dependencies": { "@vitest/pretty-format": "4.0.16", "tinyrainbow": "^3.0.3" } }, "sha512-h8z9yYhV3e1LEfaQ3zdypIrnAg/9hguReGZoS7Gl0aBG5xgA410zBqECqmaF/+RkTggRsfnzc1XaAHA6bmUufA=="],
+
+    "vitest/std-env": ["std-env@3.10.0", "", {}, "sha512-5GS12FdOZNliM5mAOxFRg7Ir0pWz8MdpYm6AY6VPkGpbA7ZzmbzNcBJQ0GPvvyWgcY7QAhCgf9Uy89I03faLkg=="],
+
+    "vitest/tinyrainbow": ["tinyrainbow@3.0.3", "", {}, "sha512-PSkbLUoxOFRzJYjjxHJt9xro7D+iilgMX/C9lawzVuYiIdcihh9DXmVibBe8lmcFrRi/VzlPjBxbN7rH24q8/Q=="],
+
     "wait-port/chalk": ["chalk@4.1.2", "", { "dependencies": { "ansi-styles": "^4.1.0", "supports-color": "^7.1.0" } }, "sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA=="],
 
     "wait-port/commander": ["commander@9.5.0", "", {}, "sha512-KRs7WVDKg86PWiuAqhDrAQnTXZKraVcCc6vFdL14qrZ/DcWwuRo7VoiYXalXO7S5GKpqYiVEwCbgFDfxNHKJBQ=="],
@@ -1328,7 +1381,7 @@
 
     "@jest/types/chalk/ansi-styles": ["ansi-styles@4.3.0", "", { "dependencies": { "color-convert": "^2.0.1" } }, "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg=="],
 
-    "@jest/types/chalk/supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
+    "@vitest/runner/@vitest/utils/tinyrainbow": ["tinyrainbow@3.0.3", "", {}, "sha512-PSkbLUoxOFRzJYjjxHJt9xro7D+iilgMX/C9lawzVuYiIdcihh9DXmVibBe8lmcFrRi/VzlPjBxbN7rH24q8/Q=="],
 
     "@vitest/snapshot/@vitest/pretty-format/tinyrainbow": ["tinyrainbow@1.2.0", "", {}, "sha512-weEDEq7Z5eTHPDh4xjX789+fHfF+P8boiFB+0vbWzpbnbsEr/GRaohi/uMKxg8RZMXnl1ItAi/IUHWMsjDV7kQ=="],
 
@@ -1338,34 +1391,24 @@
 
     "jest-diff/chalk/ansi-styles": ["ansi-styles@4.3.0", "", { "dependencies": { "color-convert": "^2.0.1" } }, "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg=="],
 
-    "jest-diff/chalk/supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
-
     "jest-diff/pretty-format/react-is": ["react-is@18.3.1", "", {}, "sha512-/LLMVyas0ljjAtoYiPqYiL8VWXzUUdThrmU5+n20DZv+a+ClRoevUzw5JxU+Ieh5/c87ytoTBV9G1FiKfNJdmg=="],
 
     "jest-matcher-utils/chalk/ansi-styles": ["ansi-styles@4.3.0", "", { "dependencies": { "color-convert": "^2.0.1" } }, "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg=="],
 
-    "jest-matcher-utils/chalk/supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
-
     "jest-matcher-utils/pretty-format/react-is": ["react-is@18.3.1", "", {}, "sha512-/LLMVyas0ljjAtoYiPqYiL8VWXzUUdThrmU5+n20DZv+a+ClRoevUzw5JxU+Ieh5/c87ytoTBV9G1FiKfNJdmg=="],
 
     "jest-message-util/chalk/ansi-styles": ["ansi-styles@4.3.0", "", { "dependencies": { "color-convert": "^2.0.1" } }, "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg=="],
 
-    "jest-message-util/chalk/supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
-
     "jest-message-util/pretty-format/react-is": ["react-is@18.3.1", "", {}, "sha512-/LLMVyas0ljjAtoYiPqYiL8VWXzUUdThrmU5+n20DZv+a+ClRoevUzw5JxU+Ieh5/c87ytoTBV9G1FiKfNJdmg=="],
 
     "jest-util/chalk/ansi-styles": ["ansi-styles@4.3.0", "", { "dependencies": { "color-convert": "^2.0.1" } }, "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg=="],
 
-    "jest-util/chalk/supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
-
     "jszip/readable-stream/string_decoder": ["string_decoder@1.1.1", "", { "dependencies": { "safe-buffer": "~5.1.0" } }, "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg=="],
 
     "lazystream/readable-stream/string_decoder": ["string_decoder@1.1.1", "", { "dependencies": { "safe-buffer": "~5.1.0" } }, "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg=="],
 
     "log-symbols/chalk/ansi-styles": ["ansi-styles@4.3.0", "", { "dependencies": { "color-convert": "^2.0.1" } }, "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg=="],
 
-    "log-symbols/chalk/supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
-
     "mocha/chokidar/readdirp": ["readdirp@3.6.0", "", { "dependencies": { "picomatch": "^2.2.1" } }, "sha512-hOS089on8RduqdbhvQ5Z37A0ESjsqz6qnRcffsMU3495FuTdqSm+7bhJ29JvIOsBDEEnan5DPu9t3To9VRlMzA=="],
 
     "mocha/find-up/locate-path": ["locate-path@6.0.0", "", { "dependencies": { "p-locate": "^5.0.0" } }, "sha512-iPZK6eYjbxRu3uB4/WZ3EsEIMJFMqAoopl3R+zuq0UjcAm/MO6KCweDgPfP3elTztoKP3KtnVHxTn2NHBSDVUw=="],
@@ -1432,8 +1475,6 @@
 
     "wait-port/chalk/ansi-styles": ["ansi-styles@4.3.0", "", { "dependencies": { "color-convert": "^2.0.1" } }, "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg=="],
 
-    "wait-port/chalk/supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
-
     "mocha/chokidar/readdirp/picomatch": ["picomatch@2.3.1", "", {}, "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA=="],
 
     "mocha/find-up/locate-path/p-locate": ["p-locate@5.0.0", "", { "dependencies": { "p-limit": "^3.0.2" } }, "sha512-LaNjtRWUBY++zB5nE/NwcaoMylSPk+S+ZHNB1TzdbMJMny6dynpAGt7X/tl/QYq3TIeE6nxHppbo2LGymrG5Pw=="],

src-tauri/src/domain/from_jellyfin.rs

@@ -0,0 +1,151 @@
+//! Jellyfin → domain translation.
+//!
+//! The ONLY place Jellyfin's vocabulary touches the domain model. Adding a
+//! second provider later means a sibling `from_<provider>.rs`; the domain types
+//! and every consumer stay untouched.
+//!
+//! Spec: docs/specs/frontend-domain-model.md
+
+use super::media::MediaKind;
+
+/// Jellyfin ticks per second (10 million). A tick is 100 ns.
+/// The frontend must never see ticks — this is where they die.
+const TICKS_PER_MILLISECOND: i64 = 10_000;
+
+/// Convert a Jellyfin `RunTimeTicks` value to milliseconds.
+///
+/// Domain durations are milliseconds; ticks are a Jellyfin unit and stop here.
+pub fn ticks_to_ms(ticks: i64) -> i64 {
+    ticks / TICKS_PER_MILLISECOND
+}
+
+/// Classify a Jellyfin `Type` string into a neutral [`MediaKind`].
+///
+/// **Total and panic-free**: any unrecognised string maps to [`MediaKind::Other`]
+/// rather than failing. `is_folder` disambiguates the one Jellyfin type
+/// (`ChannelFolderItem`) whose kind depends on whether it is a container.
+///
+/// The recognised set is every `item_type` the frontend audit found in use
+/// (docs/specs/frontend-domain-model.md), plus the common cast/crew person
+/// subtypes Jellyfin returns in `People[].Type`.
+pub fn kind_from_jellyfin(item_type: &str, is_folder: bool) -> MediaKind {
+    match item_type {
+        // Music
+        "Audio" | "MusicVideo" => MediaKind::Track,
+        "MusicAlbum" => MediaKind::Album,
+        "MusicArtist" | "AlbumArtist" => MediaKind::Artist,
+        "Playlist" => MediaKind::Playlist,
+
+        // Video
+        "Movie" => MediaKind::Movie,
+        "Series" => MediaKind::Series,
+        "Season" => MediaKind::Season,
+        "Episode" => MediaKind::Episode,
+        // A bare video leaf with no richer classification.
+        "Video" => MediaKind::Movie,
+
+        // Cast / crew — Jellyfin uses both a "Person" item type and role-typed
+        // people (Actor/Director/Writer/Composer/…) in People[].Type.
+        "Person" | "Actor" | "Director" | "Writer" | "Composer" | "GuestStar" | "Producer" => {
+            MediaKind::Person
+        }
+
+        // Live TV / channels
+        "TvChannel" | "LiveTvChannel" | "Channel" => MediaKind::Channel,
+
+        // Containers
+        "Folder" | "CollectionFolder" | "UserView" | "BoxSet" => MediaKind::Folder,
+        // ChannelFolderItem is a container when it is a folder, else a leaf we
+        // do not model further.
+        "ChannelFolderItem" => {
+            if is_folder {
+                MediaKind::Folder
+            } else {
+                MediaKind::Other
+            }
+        }
+
+        // Unknown → safe sink. Never panics.
+        _ => {
+            if is_folder {
+                MediaKind::Folder
+            } else {
+                MediaKind::Other
+            }
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn ticks_convert_to_milliseconds() {
+        // 1 second = 10,000,000 ticks = 1000 ms
+        assert_eq!(ticks_to_ms(10_000_000), 1000);
+        // 90.5 s
+        assert_eq!(ticks_to_ms(905_000_000), 90_500);
+        assert_eq!(ticks_to_ms(0), 0);
+        // Sub-millisecond truncates toward zero, not panics.
+        assert_eq!(ticks_to_ms(9_999), 0);
+    }
+
+    #[test]
+    fn music_types_map() {
+        assert_eq!(kind_from_jellyfin("Audio", false), MediaKind::Track);
+        assert_eq!(kind_from_jellyfin("MusicAlbum", true), MediaKind::Album);
+        assert_eq!(kind_from_jellyfin("MusicArtist", true), MediaKind::Artist);
+        assert_eq!(kind_from_jellyfin("Playlist", true), MediaKind::Playlist);
+    }
+
+    #[test]
+    fn video_types_map() {
+        assert_eq!(kind_from_jellyfin("Movie", false), MediaKind::Movie);
+        assert_eq!(kind_from_jellyfin("Series", true), MediaKind::Series);
+        assert_eq!(kind_from_jellyfin("Season", true), MediaKind::Season);
+        assert_eq!(kind_from_jellyfin("Episode", false), MediaKind::Episode);
+        assert_eq!(kind_from_jellyfin("Video", false), MediaKind::Movie);
+    }
+
+    #[test]
+    fn person_and_role_types_map_to_person() {
+        for t in ["Person", "Actor", "Director", "Writer", "Composer"] {
+            assert_eq!(kind_from_jellyfin(t, false), MediaKind::Person, "{t}");
+        }
+    }
+
+    #[test]
+    fn channel_and_container_types_map() {
+        assert_eq!(kind_from_jellyfin("TvChannel", false), MediaKind::Channel);
+        assert_eq!(
+            kind_from_jellyfin("CollectionFolder", true),
+            MediaKind::Folder
+        );
+        assert_eq!(kind_from_jellyfin("BoxSet", true), MediaKind::Folder);
+    }
+
+    #[test]
+    fn channel_folder_item_disambiguates_on_is_folder() {
+        assert_eq!(
+            kind_from_jellyfin("ChannelFolderItem", true),
+            MediaKind::Folder
+        );
+        assert_eq!(
+            kind_from_jellyfin("ChannelFolderItem", false),
+            MediaKind::Other
+        );
+    }
+
+    #[test]
+    fn unknown_type_never_panics_and_falls_back() {
+        // The whole point: garbage in, safe kind out, no panic.
+        assert_eq!(kind_from_jellyfin("Epis0de", false), MediaKind::Other);
+        assert_eq!(kind_from_jellyfin("", false), MediaKind::Other);
+        assert_eq!(
+            kind_from_jellyfin("SomeFutureType", true),
+            MediaKind::Folder
+        );
+        assert_eq!(kind_from_jellyfin("🎵unicode", false), MediaKind::Other);
+    }
+}

src-tauri/src/domain/media.rs

@@ -0,0 +1,68 @@
+//! Canonical, provider-neutral media domain model.
+//!
+//! This is the *single source of truth* for what a media item is across the
+//! whole app. Rust (repositories, player, downloads) uses these types directly;
+//! the frontend consumes the tauri-specta-generated projection in
+//! `src/lib/api/bindings.ts`. There is no second hand-written copy in either
+//! language, so the model cannot drift.
+//!
+//! No provider (Jellyfin) vocabulary belongs in this file. Translation from a
+//! provider's wire shape lives beside it in `from_jellyfin.rs` and is the only
+//! place provider terms touch the domain type.
+//!
+//! Spec: docs/specs/frontend-domain-model.md
+
+use serde::{Deserialize, Serialize};
+
+/// The kind of a media item — provider-neutral classification.
+///
+/// Replaces the stringly-typed `item_type` that carried Jellyfin's vocabulary
+/// (`"Audio"`, `"MusicAlbum"`, …) across the boundary. A closed enum means a
+/// typo or an unhandled kind is a compile error on the frontend, not a silent
+/// runtime miss across ~127 comparison sites.
+#[derive(specta::Type, Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize, Default)]
+#[serde(rename_all = "camelCase")]
+pub enum MediaKind {
+    // Music
+    Track,
+    Album,
+    Artist,
+    Playlist,
+    // Video
+    Movie,
+    Series,
+    Season,
+    Episode,
+    // Cast/crew
+    Person,
+    // Containers / live TV
+    Channel,
+    Folder,
+    /// A kind we do not model explicitly. Reached only for provider item types
+    /// that map to nothing meaningful; consumers treat it like an opaque
+    /// container. The mapping must be *total* — it never panics — so this is the
+    /// safe sink for unknown strings. Also the `Default`, so a defaulted
+    /// `MediaItem` (see the dual-carry migration) is inert rather than a lie.
+    #[default]
+    Other,
+}
+
+impl MediaKind {
+    /// True for kinds that are containers/collections rather than playable leaves.
+    /// Presentation-neutral helper the backend can use for e.g. drill-vs-play.
+    // Consumed by later migration phases (drill-vs-play routing); kept now so the
+    // domain surface is complete alongside the type it describes.
+    #[allow(dead_code)]
+    pub fn is_container(self) -> bool {
+        matches!(
+            self,
+            MediaKind::Album
+                | MediaKind::Artist
+                | MediaKind::Series
+                | MediaKind::Season
+                | MediaKind::Playlist
+                | MediaKind::Channel
+                | MediaKind::Folder
+        )
+    }
+}

src-tauri/src/domain/mod.rs

@@ -0,0 +1,10 @@
+//! Canonical, provider-neutral domain model — the single source of truth for
+//! the app's core data shapes, shared with the frontend via generated bindings.
+//!
+//! Spec: docs/specs/frontend-domain-model.md
+
+pub mod from_jellyfin;
+pub mod media;
+
+pub use from_jellyfin::{kind_from_jellyfin, ticks_to_ms};
+pub use media::MediaKind;

src-tauri/src/lib.rs

@@ -2,6 +2,7 @@ mod auth;
 mod commands;
 mod connectivity;
 mod credentials;
+mod domain;
 mod download;
 mod jellyfin;
 mod playback_mode;

src-tauri/src/player/mod.rs

@@ -2177,6 +2177,7 @@ mod tests {
             id: id.to_string(),
             name: format!("Episode {}", index),
             item_type: "Episode".to_string(),
+            kind: crate::domain::MediaKind::Episode,
             is_folder: false,
             server_id: "server".to_string(),
             parent_id: Some("season1".to_string()),
@@ -2184,11 +2185,13 @@ mod tests {
             overview: None,
             genres: None,
             runtime_ticks: None,
+            duration_ms: None,
             production_year: None,
             premiere_date: None,
             community_rating: None,
             official_rating: None,
             primary_image_tag: None,
+            image_id: None,
             backdrop_image_tags: None,
             parent_backdrop_image_tags: None,
             album_id: None,

src-tauri/src/repository/hybrid.rs

@@ -1422,6 +1422,7 @@ mod tests {
             id: id.to_string(),
             name: name.to_string(),
             item_type: "Movie".to_string(),
+            kind: crate::domain::MediaKind::Movie,
             is_folder: false,
             server_id: "test-server".to_string(),
             parent_id: Some("parent-123".to_string()),
@@ -1429,11 +1430,13 @@ mod tests {
             overview: Some("Test overview".to_string()),
             genres: Some(vec!["Action".to_string(), "Adventure".to_string()]),
             runtime_ticks: Some(7200000000),
+            duration_ms: Some(720000),
             production_year: Some(2024),
             premiere_date: None,
             community_rating: Some(8.5),
             official_rating: Some("PG-13".to_string()),
             primary_image_tag: Some("image-tag-123".to_string()),
+            image_id: Some("image-tag-123".to_string()),
             backdrop_image_tags: Some(vec!["backdrop-1".to_string()]),
             parent_backdrop_image_tags: None,
             album_id: None,

src-tauri/src/repository/offline.rs

@@ -68,10 +68,13 @@ impl OfflineRepository {
             .and_then(|s| serde_json::from_str::<Vec<String>>(s).ok())
             .unwrap_or_default();
 
+        let kind = crate::domain::kind_from_jellyfin(&item.item_type, item.is_folder);
+
         MediaItem {
             id: item.id.clone(),
             name: item.name,
             item_type: item.item_type,
+            kind,
             is_folder: item.is_folder,
             server_id: item.server_id,
             parent_id: item.parent_id,
@@ -82,11 +85,13 @@ impl OfflineRepository {
                 .as_ref()
                 .and_then(|s| serde_json::from_str::<Vec<String>>(s).ok()),
             runtime_ticks: item.runtime_ticks,
+            duration_ms: item.runtime_ticks.map(crate::domain::ticks_to_ms),
             production_year: item.production_year,
             premiere_date: item.premiere_date,
             community_rating: item.community_rating,
             official_rating: item.official_rating,
-            primary_image_tag: item.primary_image_tag,
+            primary_image_tag: item.primary_image_tag.clone(),
+            image_id: item.primary_image_tag,
             backdrop_image_tags: item.backdrop_image_tags,
             parent_backdrop_image_tags: item.parent_backdrop_image_tags,
             album_id: item.album_id,
@@ -1599,6 +1604,7 @@ impl MediaRepository for OfflineRepository {
             id: person_data.0,
             name: person_data.1,
             item_type: "Person".to_string(),
+            kind: crate::domain::MediaKind::Person,
             is_folder: false,
             server_id: self.server_id.clone(),
             parent_id: None,
@@ -1606,11 +1612,13 @@ impl MediaRepository for OfflineRepository {
             overview: person_data.2,
             genres: None,
             runtime_ticks: None,
+            duration_ms: None,
             production_year: None,
             premiere_date: None,
             community_rating: None,
             official_rating: None,
-            primary_image_tag: person_data.3,
+            primary_image_tag: person_data.3.clone(),
+            image_id: person_data.3,
             backdrop_image_tags: None,
             parent_backdrop_image_tags: None,
             album_id: None,
@@ -2100,6 +2108,7 @@ mod tests {
             id: id.to_string(),
             name: name.to_string(),
             item_type: "Audio".to_string(),
+            kind: crate::domain::MediaKind::Track,
             is_folder: false,
             server_id: "test-server".to_string(),
             parent_id: parent_id.map(|s| s.to_string()),
@@ -2107,11 +2116,13 @@ mod tests {
             overview: None,
             genres: None,
             runtime_ticks: None,
+            duration_ms: None,
             production_year: None,
             premiere_date: None,
             community_rating: None,
             official_rating: None,
             primary_image_tag: None,
+            image_id: None,
             backdrop_image_tags: None,
             parent_backdrop_image_tags: None,
             album_id: None,

src-tauri/src/repository/online.rs

@@ -619,10 +619,13 @@ impl JellyfinItem {
         let primary_tag = self.image_tags.as_ref().and_then(|tags| tags.primary());
         let backdrop_tags = self.backdrop_image_tags;
 
+        let kind = crate::domain::kind_from_jellyfin(&self.item_type, self.is_folder);
+
         MediaItem {
             id: self.id,
             name: self.name,
             item_type: self.item_type,
+            kind,
             is_folder: self.is_folder,
             server_id,
             parent_id: self.parent_id,
@@ -634,7 +637,9 @@ impl JellyfinItem {
             community_rating: self.community_rating,
             official_rating: self.official_rating,
             runtime_ticks: self.run_time_ticks,
-            primary_image_tag: primary_tag,
+            duration_ms: self.run_time_ticks.map(crate::domain::ticks_to_ms),
+            primary_image_tag: primary_tag.clone(),
+            image_id: primary_tag,
             backdrop_image_tags: backdrop_tags,
             parent_backdrop_image_tags: self.parent_backdrop_image_tags,
             album_id: self.album_id,
@@ -923,6 +928,7 @@ impl MediaRepository for OnlineRepository {
                         .clone()
                         .unwrap_or_else(|| "Unknown Album".to_string()),
                     item_type: "MusicAlbum".to_string(),
+                    kind: crate::domain::MediaKind::Album,
                     is_folder: true,
                     server_id: first_track.server_id.clone(),
                     parent_id: None,
@@ -934,7 +940,9 @@ impl MediaRepository for OnlineRepository {
                     community_rating: None,
                     official_rating: None,
                     runtime_ticks: None,
+                    duration_ms: None,
                     primary_image_tag: first_track.primary_image_tag.clone(),
+                    image_id: first_track.primary_image_tag.clone(),
                     backdrop_image_tags: None,
                     parent_backdrop_image_tags: None,
                     album_id: None,

src-tauri/src/repository/types.rs

@@ -97,13 +97,24 @@ pub struct Person {
 }
 
 /// Media item
-#[derive(specta::Type, Debug, Clone, Serialize, Deserialize)]
+#[derive(specta::Type, Debug, Clone, Serialize, Deserialize, Default)]
 #[serde(rename_all = "camelCase")]
 pub struct MediaItem {
     pub id: String,
     pub name: String,
+    /// Legacy Jellyfin item-type string (`"Audio"`, `"MusicAlbum"`, …).
+    ///
+    /// Dual-carry migration (docs/specs/frontend-domain-model.md): `kind` below
+    /// is the neutral replacement. This field stays while the frontend migrates
+    /// off it, then is removed in a later phase. New Rust code should read
+    /// `kind`, not this.
     #[serde(rename = "type")]
     pub item_type: String,
+    /// Provider-neutral classification — the replacement for `item_type`.
+    /// Populated by the Jellyfin mapping; defaults to `Other` for the handful of
+    /// construction sites that have not been migrated yet.
+    #[serde(default)]
+    pub kind: crate::domain::MediaKind,
     /// Whether this item is a folder/container (vs a playable leaf). Used to
     /// decide whether a channel item drills into a list or plays directly.
     #[serde(default)]
@@ -127,11 +138,25 @@ pub struct MediaItem {
     pub community_rating: Option<f64>,
     #[serde(skip_serializing_if = "Option::is_none")]
     pub official_rating: Option<String>,
+    /// Legacy Jellyfin duration in ticks (100 ns units). Being replaced by
+    /// `duration_ms`; dual-carried while the frontend migrates
+    /// (docs/specs/frontend-domain-model.md). New code should read `duration_ms`.
     #[serde(skip_serializing_if = "Option::is_none")]
     #[serde(rename = "runTimeTicks")]
     pub runtime_ticks: Option<i64>,
+    /// Duration in milliseconds — the neutral replacement for `runtime_ticks`.
+    /// Ticks never reach the frontend; this does.
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub duration_ms: Option<i64>,
+    /// Legacy Jellyfin primary image tag. Being replaced by `image_id`;
+    /// dual-carried while the frontend migrates. New code should read `image_id`.
     #[serde(skip_serializing_if = "Option::is_none")]
     pub primary_image_tag: Option<String>,
+    /// Neutral image identifier the frontend resolves to a URL via the image
+    /// command — the replacement for `primary_image_tag`. Same value today
+    /// (Jellyfin's tag is the id); the rename removes the provider term.
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub image_id: Option<String>,
     #[serde(skip_serializing_if = "Option::is_none")]
     pub backdrop_image_tags: Option<Vec<String>>,
     #[serde(skip_serializing_if = "Option::is_none")]
@@ -525,6 +550,7 @@ mod tests {
                 id: "1".to_string(),
                 name: "Test".to_string(),
                 item_type: "Audio".to_string(),
+                kind: crate::domain::MediaKind::Track,
                 is_folder: false,
                 server_id: "server1".to_string(),
                 parent_id: None,
@@ -536,7 +562,9 @@ mod tests {
                 community_rating: None,
                 official_rating: None,
                 runtime_ticks: None,
+                duration_ms: None,
                 primary_image_tag: None,
+                image_id: None,
                 backdrop_image_tags: None,
                 parent_backdrop_image_tags: None,
                 album_id: None,
@@ -675,6 +703,7 @@ mod tests {
                 id: "track1".to_string(),
                 name: "Test Track".to_string(),
                 item_type: "Audio".to_string(),
+                kind: crate::domain::MediaKind::Track,
                 is_folder: false,
                 server_id: "server1".to_string(),
                 parent_id: None,
@@ -686,7 +715,9 @@ mod tests {
                 community_rating: None,
                 official_rating: None,
                 runtime_ticks: None,
+                duration_ms: None,
                 primary_image_tag: None,
+                image_id: None,
                 backdrop_image_tags: None,
                 parent_backdrop_image_tags: None,
                 album_id: None,
@@ -736,6 +767,7 @@ mod tests {
                 id: "1".to_string(),
                 name: "Track".to_string(),
                 item_type: "Audio".to_string(),
+                kind: crate::domain::MediaKind::Track,
                 is_folder: false,
                 server_id: "s1".to_string(),
                 parent_id: None,
@@ -747,7 +779,9 @@ mod tests {
                 community_rating: None,
                 official_rating: None,
                 runtime_ticks: None,
+                duration_ms: None,
                 primary_image_tag: None,
+                image_id: None,
                 backdrop_image_tags: None,
                 parent_backdrop_image_tags: None,
                 album_id: None,

src/lib/api/bindings.ts

@@ -1802,7 +1802,22 @@ export type LmsSyncGroup = { masterMac: string; masterName?: string; slaveMacs?:
 /**
  * Media item
  */
-export type MediaItem = { id: string; name: string; type: string; 
+export type MediaItem = { id: string; name: string; 
+/**
+ * Legacy Jellyfin item-type string (`"Audio"`, `"MusicAlbum"`, …).
+ * 
+ * Dual-carry migration (docs/specs/frontend-domain-model.md): `kind` below
+ * is the neutral replacement. This field stays while the frontend migrates
+ * off it, then is removed in a later phase. New Rust code should read
+ * `kind`, not this.
+ */
+type: string; 
+/**
+ * Provider-neutral classification — the replacement for `item_type`.
+ * Populated by the Jellyfin mapping; defaults to `Other` for the handful of
+ * construction sites that have not been migrated yet.
+ */
+kind?: MediaKind; 
 /**
  * Whether this item is a folder/container (vs a playable leaf). Used to
  * decide whether a channel item drills into a list or plays directly.
@@ -1812,7 +1827,46 @@ isFolder?: boolean; serverId: string; parentId?: string | null; libraryId?: stri
  * ISO-8601 release/air date (Jellyfin `PremiereDate`). Used to sort
  * podcast episodes by release date.
  */
-premiereDate?: string | null; communityRating?: number | null; officialRating?: string | null; runTimeTicks?: number | null; primaryImageTag?: string | null; backdropImageTags?: string[] | null; parentBackdropImageTags?: string[] | null; albumId?: string | null; albumName?: string | null; albumArtist?: string | null; artists?: string[] | null; artistItems?: ArtistItem[] | null; indexNumber?: number | null; parentIndexNumber?: number | null; seriesId?: string | null; seriesName?: string | null; seasonId?: string | null; seasonName?: string | null; userData?: UserData | null; mediaStreams?: MediaStream[] | null; mediaSources?: MediaSource[] | null; people?: Person[] | null }
+premiereDate?: string | null; communityRating?: number | null; officialRating?: string | null; 
+/**
+ * Legacy Jellyfin duration in ticks (100 ns units). Being replaced by
+ * `duration_ms`; dual-carried while the frontend migrates
+ * (docs/specs/frontend-domain-model.md). New code should read `duration_ms`.
+ */
+runTimeTicks?: number | null; 
+/**
+ * Duration in milliseconds — the neutral replacement for `runtime_ticks`.
+ * Ticks never reach the frontend; this does.
+ */
+durationMs?: number | null; 
+/**
+ * Legacy Jellyfin primary image tag. Being replaced by `image_id`;
+ * dual-carried while the frontend migrates. New code should read `image_id`.
+ */
+primaryImageTag?: string | null; 
+/**
+ * Neutral image identifier the frontend resolves to a URL via the image
+ * command — the replacement for `primary_image_tag`. Same value today
+ * (Jellyfin's tag is the id); the rename removes the provider term.
+ */
+imageId?: string | null; backdropImageTags?: string[] | null; parentBackdropImageTags?: string[] | null; albumId?: string | null; albumName?: string | null; albumArtist?: string | null; artists?: string[] | null; artistItems?: ArtistItem[] | null; indexNumber?: number | null; parentIndexNumber?: number | null; seriesId?: string | null; seriesName?: string | null; seasonId?: string | null; seasonName?: string | null; userData?: UserData | null; mediaStreams?: MediaStream[] | null; mediaSources?: MediaSource[] | null; people?: Person[] | null }
+/**
+ * The kind of a media item — provider-neutral classification.
+ * 
+ * Replaces the stringly-typed `item_type` that carried Jellyfin's vocabulary
+ * (`"Audio"`, `"MusicAlbum"`, …) across the boundary. A closed enum means a
+ * typo or an unhandled kind is a compile error on the frontend, not a silent
+ * runtime miss across ~127 comparison sites.
+ */
+export type MediaKind = "track" | "album" | "artist" | "playlist" | "movie" | "series" | "season" | "episode" | "person" | "channel" | "folder" | 
+/**
+ * A kind we do not model explicitly. Reached only for provider item types
+ * that map to nothing meaningful; consumers treat it like an opaque
+ * container. The mapping must be *total* — it never panics — so this is the
+ * safe sink for unknown strings. Also the `Default`, so a defaulted
+ * `MediaItem` (see the dual-carry migration) is inert rather than a lie.
+ */
+"other"
 /**
  * Media session type tracking the high-level playback context
  */
@@ -2276,7 +2330,22 @@ export type PlaylistEntry =
 /**
  * The underlying media item
  */
-({ id: string; name: string; type: string; 
+({ id: string; name: string; 
+/**
+ * Legacy Jellyfin item-type string (`"Audio"`, `"MusicAlbum"`, …).
+ * 
+ * Dual-carry migration (docs/specs/frontend-domain-model.md): `kind` below
+ * is the neutral replacement. This field stays while the frontend migrates
+ * off it, then is removed in a later phase. New Rust code should read
+ * `kind`, not this.
+ */
+type: string; 
+/**
+ * Provider-neutral classification — the replacement for `item_type`.
+ * Populated by the Jellyfin mapping; defaults to `Other` for the handful of
+ * construction sites that have not been migrated yet.
+ */
+kind?: MediaKind; 
 /**
  * Whether this item is a folder/container (vs a playable leaf). Used to
  * decide whether a channel item drills into a list or plays directly.
@@ -2286,7 +2355,29 @@ isFolder?: boolean; serverId: string; parentId?: string | null; libraryId?: stri
  * ISO-8601 release/air date (Jellyfin `PremiereDate`). Used to sort
  * podcast episodes by release date.
  */
-premiereDate?: string | null; communityRating?: number | null; officialRating?: string | null; runTimeTicks?: number | null; primaryImageTag?: string | null; backdropImageTags?: string[] | null; parentBackdropImageTags?: string[] | null; albumId?: string | null; albumName?: string | null; albumArtist?: string | null; artists?: string[] | null; artistItems?: ArtistItem[] | null; indexNumber?: number | null; parentIndexNumber?: number | null; seriesId?: string | null; seriesName?: string | null; seasonId?: string | null; seasonName?: string | null; userData?: UserData | null; mediaStreams?: MediaStream[] | null; mediaSources?: MediaSource[] | null; people?: Person[] | null }) & { 
+premiereDate?: string | null; communityRating?: number | null; officialRating?: string | null; 
+/**
+ * Legacy Jellyfin duration in ticks (100 ns units). Being replaced by
+ * `duration_ms`; dual-carried while the frontend migrates
+ * (docs/specs/frontend-domain-model.md). New code should read `duration_ms`.
+ */
+runTimeTicks?: number | null; 
+/**
+ * Duration in milliseconds — the neutral replacement for `runtime_ticks`.
+ * Ticks never reach the frontend; this does.
+ */
+durationMs?: number | null; 
+/**
+ * Legacy Jellyfin primary image tag. Being replaced by `image_id`;
+ * dual-carried while the frontend migrates. New code should read `image_id`.
+ */
+primaryImageTag?: string | null; 
+/**
+ * Neutral image identifier the frontend resolves to a URL via the image
+ * command — the replacement for `primary_image_tag`. Same value today
+ * (Jellyfin's tag is the id); the rename removes the provider term.
+ */
+imageId?: string | null; backdropImageTags?: string[] | null; parentBackdropImageTags?: string[] | null; albumId?: string | null; albumName?: string | null; albumArtist?: string | null; artists?: string[] | null; artistItems?: ArtistItem[] | null; indexNumber?: number | null; parentIndexNumber?: number | null; seriesId?: string | null; seriesName?: string | null; seasonId?: string | null; seasonName?: string | null; userData?: UserData | null; mediaStreams?: MediaStream[] | null; mediaSources?: MediaSource[] | null; people?: Person[] | null }) & { 
 /**
  * The playlist-scoped entry ID (Jellyfin's PlaylistItemId)
  */