Address remaining review items (queue, selfbot v6 API, ldconfig, resample)

- voice.ts: reply playback is now a FIFO queue (AudioPlayerStatus.Idle drains
  it) so concurrent speakers no longer cut each other's replies off.
- selfbot.ts: rewritten against the REAL @dank074/discord-video-stream v6 API
  (verified from its d.ts): prepareStream(input, opts, signal)->{command,output},
  playStream(output, streamer, {type:"go-live"}, signal), Streamer.joinVoice.
  x11grab via customInputOptions; optional NVENC encode (RTX 5050) via exported
  `nvenc`. package.json pinned to ^6.0.0 (was a wrong ^4.2.1).
- Dockerfile: dropped the hardcoded python3.12 LD_LIBRARY_PATH. faster-whisper
  >=1.1 self-locates the pip CUDA libs; ldconfig (full path, glob) registers
  them as a robust fallback. Verified: ld.so cache lists libcublas/libcudnn and
  GPU whisper works with LD_LIBRARY_PATH empty.
- bridge: STT resample 48k->16k upgraded from nearest-neighbor to linear
  (np.interp).

Verified: tsc clean, image builds, GPU whisper OK via ldconfig, compose valid.

Dockerfile

@@ -10,8 +10,7 @@ ENV DEBIAN_FRONTEND=noninteractive \
     DISPLAY=:1 \
     PATH=/opt/venv/bin:/root/.bun/bin:/usr/local/bin:/usr/bin:/bin \
     NVIDIA_VISIBLE_DEVICES=all \
-    NVIDIA_DRIVER_CAPABILITIES=compute,utility \
-    LD_LIBRARY_PATH=/opt/venv/lib/python3.12/site-packages/nvidia/cublas/lib:/opt/venv/lib/python3.12/site-packages/nvidia/cudnn/lib
+    NVIDIA_DRIVER_CAPABILITIES=compute,utility
 
 # --- System packages: desktop, VNC, Chrome deps, ffmpeg, python, ocr ---
 RUN apt-get update && apt-get install -y --no-install-recommends \
@@ -38,6 +37,15 @@ RUN python3 -m venv /opt/venv \
     && /opt/venv/bin/pip install --no-cache-dir --upgrade pip \
     && /opt/venv/bin/pip install --no-cache-dir -r /app/bridge/requirements-bridge.txt
 
+# faster-whisper>=1.1 / ctranslate2 self-locates these pip CUDA libs at runtime,
+# so no hardcoded LD_LIBRARY_PATH is needed. We also register them with the
+# dynamic linker (full path to ldconfig; PATH excludes /sbin) as a robust
+# fallback. Path-glob is python-version agnostic.
+RUN ls -d /opt/venv/lib/python*/site-packages/nvidia/cublas/lib \
+          /opt/venv/lib/python*/site-packages/nvidia/cudnn/lib \
+        > /etc/ld.so.conf.d/nvidia-cu12.conf 2>/dev/null \
+    && /sbin/ldconfig || true
+
 # --- Discord bot deps (cache layer on lockfile) ---
 COPY bot/package.json bot/bun.lock /app/bot/
 RUN cd /app/bot && bun install --frozen-lockfile || bun install