fix(audio,voice,log): six P0 issues from Korean Windows test

1. Voice Bar 'Leave voice' button removed entirely. TeamSpeak users
   are always in some channel; Discord/Mumble-style leave is the
   wrong model. To stop being heard / hearing, mute mic / speaker.
   To physically move, tap a different channel. The voiceLeave
   bridge call + _onLeaveVoice stay as dead code for now (marked
   unused) so existing tests/integrations don't break.

2. voice_join now confirms the move actually applied server-side
   by polling the snapshot for up to 1.5 s and matching our own
   client's channel against the requested one. If the server
   rejected the move (no permission, wrong password, channel
   full), voice_join rolls the selector back to in_channel=false
   and returns Err so the UI surfaces the failure instead of
   showing a fake 'joined' state.

3. ServerSnapshot + BridgeSnapshot gain own_client_id so the UI
   can identify our row without name-matching. find_own_in reads
   it directly.

4. set_self_muted now also clamps the TransmitModeSelector's
   hard_mute when input is muted server-side. Without this, the
   Opus encoder kept producing frames after setInputMuted(true),
   tsclientlib refused each one with 'Sending audio while muted',
   and the log grew to 200 MB on the Korean host.

5. tsclientlib WARN spam suppressed via tracing filter
   (tsclientlib=error). Belt-and-braces on top of fix 4.

6. Log file is now rotated at every launch (not just when >4 MiB).
   Two generations kept: chanora.log.1 (previous) and
   chanora.log.2 (the one before). The bug that produced 200 MB
   files was a chatty subsystem flooding a single session; the
   per-launch rotate keeps disk use bounded by what one session
   can produce in its lifetime.

Bonus Windows fix (separate from the six but found in the same
log): the Raw Input + Hook backends now signal readiness BEFORE
blocking on GetMessageW. Previously init_tx.send was called after
the loop returned (i.e. on WM_QUIT, which never happens during
arming), so the main thread's 2 s readiness probe always timed
out and the backend reported L0Focused even when registration
succeeded. Both run_raw_input_loop and run_hook_loop now take an
init_tx parameter and call report!(true) right after a successful
registration, and report!(false) on every early-fail return.

cargo check --workspace: clean.
cargo test --workspace --lib: 80 passed / 0 failed / 1 ignored.
flutter analyze: clean (6 pre-existing Radio.groupValue infos).

crates/chanora_bridge/src/api.rs

@@ -55,7 +55,8 @@ fn log_sink() -> &'static chanora_core::InMemoryLogSink {
 /// `tsproto::resend` and `tsproto::packet_codec` paths that
 /// flood the diagnostic export during transient packet loss;
 /// users can still raise verbosity via `RUST_LOG=info`.
-const DEFAULT_LOG_FILTER: &str = "info,tsproto::resend=error,tsproto::packet_codec=error";
+const DEFAULT_LOG_FILTER: &str =
+    "info,tsproto::resend=error,tsproto::packet_codec=error,tsclientlib=error";
 
 /// Initialise the bridge. Must be called once on Dart side before
 /// any other API call. Sets up panic logging.
@@ -193,17 +194,32 @@ fn open_log_file() -> Option<std::fs::File> {
     if let Some(parent) = path.parent() {
         let _ = std::fs::create_dir_all(parent);
     }
-    // Rotate: if the existing file exceeds 4 MiB rename it to .1 so
-    // we never grow unbounded. One generation is enough for
-    // debugging; we are not building a real log-rotation system.
-    if let Ok(meta) = std::fs::metadata(&path) {
-        if meta.len() > 4 * 1024 * 1024 {
-            let _ = std::fs::rename(&path, path.with_extension("log.1"));
-        }
+    // Rotate at every launch (not on size). A single session can
+    // emit huge logs when a chatty subsystem floods (the original
+    // bug that surfaced this: tsclientlib emitting one warning per
+    // outbound voice frame while server-side muted). Truncating on
+    // every launch keeps per-session disk use bounded by what one
+    // session can produce in its lifetime; the on-launch rotate
+    // also gives the previous session's log a stable home at
+    // `chanora.log.1` for post-mortem inspection.
+    //
+    // Two generations kept: `chanora.log.1` (previous launch) and
+    // `chanora.log.2` (the one before that). Older generations
+    // are deleted to keep disk use bounded across many launches.
+    if path.exists() {
+        let g1 = path.with_extension("log.1");
+        let g2 = path.with_extension("log.2");
+        // .2 is dropped; .1 becomes .2; current becomes .1.
+        let _ = std::fs::remove_file(&g2);
+        let _ = std::fs::rename(&g1, &g2);
+        let _ = std::fs::rename(&path, &g1);
     }
+    // Open fresh (truncate if rename somehow failed so we never
+    // append onto a stale file).
     std::fs::OpenOptions::new()
         .create(true)
-        .append(true)
+        .write(true)
+        .truncate(true)
         .open(&path)
         .ok()
 }
@@ -251,6 +267,10 @@ pub struct BridgeSnapshot {
     pub channels: Vec<BridgeChannel>,
     /// Clients currently known.
     pub clients: Vec<BridgeClient>,
+    /// Our own client id. Useful for the UI to highlight our row
+    /// in the client list and to know which channel we are in
+    /// without trusting the optimistic local state.
+    pub own_client_id: u64,
 }
 
 impl From<chanora_protocol::ServerSnapshot> for BridgeSnapshot {
@@ -279,6 +299,7 @@ impl From<chanora_protocol::ServerSnapshot> for BridgeSnapshot {
                     name: c.name,
                 })
                 .collect(),
+            own_client_id: s.own_client_id,
         }
     }
 }