Migrate all IPC call sites to typed tauri-specta commands.*

Replace the remaining ~155 untyped invoke() calls across stores, services,
components, and routes with the generated commands.* wrappers from
$lib/api/bindings, so every IPC call is compile-time-checked against the
command signatures.

- Register repository_get_subtitle_url and repository_get_video_download_url
  in specta_builder() and the invoke_handler; regenerate bindings.ts.
- Source duplicated wire types (AutoplaySettings, CacheConfig, Session,
  ConnectivityStatus, audio/video settings, etc.) from bindings.
- Fix two bugs surfaced by the typed wrappers:
  - VideoDownloadButton passed an un-awaited Promise as the stream URL.
  - setAutoplaySettings omitted the required userId argument.
- Update unit tests asserting the old invoke(name, args) shape.
- Remove the five param-naming guard tests; the compiler and codegen now
  enforce what they checked.

svelte-check: 0 errors. vitest: green. cargo test --lib: green.

src/lib/stores/sessions.ts

@@ -2,8 +2,8 @@
 // TRACES: UR-010 | DR-037
 
 import { writable, derived } from "svelte/store";
-import { invoke } from "@tauri-apps/api/core";
 import { listen } from "@tauri-apps/api/event";
+import { commands } from "$lib/api/bindings";
 import type { Session } from "$lib/api/types";
 
 interface SessionsState {
@@ -53,7 +53,7 @@ function createSessionsStore() {
     try {
       update((s) => ({ ...s, isLoading: true, error: null }));
 
-      const sessions = await invoke<Session[]>("sessions_poll_now");
+      const sessions = await commands.sessionsPollNow();
 
       console.log(`[Sessions] Manual refresh returned ${sessions.length} sessions`);
       sessions.forEach((s, i) => {
@@ -91,10 +91,7 @@ function createSessionsStore() {
    */
   async function sendPlayPause(sessionId: string | null | undefined): Promise<void> {
     try {
-      await invoke("remote_send_command", {
-        sessionId,
-        command: "PlayPause",
-      });
+      await commands.remoteSendCommand(sessionId ?? "", "PlayPause");
       // Refresh after command to get updated state
       await refresh();
     } catch (error) {
@@ -108,10 +105,7 @@ function createSessionsStore() {
    */
   async function sendStop(sessionId: string | null | undefined): Promise<void> {
     try {
-      await invoke("remote_send_command", {
-        sessionId,
-        command: "Stop",
-      });
+      await commands.remoteSendCommand(sessionId ?? "", "Stop");
       await refresh();
     } catch (error) {
       console.error("Failed to send stop command:", error);
@@ -124,10 +118,7 @@ function createSessionsStore() {
    */
   async function sendNext(sessionId: string | null | undefined): Promise<void> {
     try {
-      await invoke("remote_send_command", {
-        sessionId,
-        command: "NextTrack",
-      });
+      await commands.remoteSendCommand(sessionId ?? "", "NextTrack");
       await refresh();
     } catch (error) {
       console.error("Failed to send next track command:", error);
@@ -140,10 +131,7 @@ function createSessionsStore() {
    */
   async function sendPrevious(sessionId: string | null | undefined): Promise<void> {
     try {
-      await invoke("remote_send_command", {
-        sessionId,
-        command: "PreviousTrack",
-      });
+      await commands.remoteSendCommand(sessionId ?? "", "PreviousTrack");
       await refresh();
     } catch (error) {
       console.error("Failed to send previous track command:", error);
@@ -156,10 +144,7 @@ function createSessionsStore() {
    */
   async function sendSeek(sessionId: string | null | undefined, positionTicks: number): Promise<void> {
     try {
-      await invoke("remote_session_seek", {
-        sessionId,
-        positionTicks,
-      });
+      await commands.remoteSessionSeek(sessionId ?? "", positionTicks);
       // Don't refresh immediately for seek to avoid UI lag
     } catch (error) {
       console.error("Failed to send seek command:", error);
@@ -172,10 +157,7 @@ function createSessionsStore() {
    */
   async function sendVolume(sessionId: string | null | undefined, volume: number): Promise<void> {
     try {
-      await invoke("remote_session_set_volume", {
-        sessionId,
-        volume,
-      });
+      await commands.remoteSessionSetVolume(sessionId ?? "", volume);
       // Don't refresh immediately for volume to avoid UI lag
     } catch (error) {
       console.error("Failed to send volume command:", error);
@@ -188,10 +170,7 @@ function createSessionsStore() {
    */
   async function sendToggleMute(sessionId: string | null | undefined): Promise<void> {
     try {
-      await invoke("remote_send_command", {
-        sessionId,
-        command: "ToggleMute",
-      });
+      await commands.remoteSendCommand(sessionId ?? "", "ToggleMute");
       await refresh();
     } catch (error) {
       console.error("Failed to toggle mute:", error);
@@ -213,14 +192,10 @@ function createSessionsStore() {
     console.log("[SESSIONS] itemIds.length:", itemIds.length);
     console.log("[SESSIONS] itemIds JSON:", JSON.stringify(itemIds));
     console.log("[SESSIONS] startIndex:", startIndex);
-    console.log("[SESSIONS] About to call invoke('remote_play_on_session')");
+    console.log("[SESSIONS] About to call commands.remotePlayOnSession");
     try {
       // Use Rust player's Jellyfin client for remote playback
-      const result = await invoke("remote_play_on_session", {
-        sessionId,
-        itemIds,
-        startIndex,
-      });
+      const result = await commands.remotePlayOnSession(sessionId ?? "", itemIds, startIndex);
       console.log("[SESSIONS] invoke succeeded, result:", result);
       await refresh();
     } catch (error) {