chore: init pi_coder repository

Pi agent extension, model config, and LLaMA server startup scripts
for the coder/judge workflow (ports 8001/8002).

start-coder.sh

@@ -0,0 +1,90 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+HF_HOME="${HF_HOME:-/home/dschlueter/nvme2n1p7_home/huggingface}"
+MODEL_REL_PATH="models/qwen3/Qwen3.6-27B-Uncensored-HauhauCS-Aggressive-IQ4_XS.gguf"
+IMAGE="ghcr.io/ggml-org/llama.cpp:server-cuda"
+CONTAINER_NAME="qwen36-27b-coder"
+HOST_PORT=8001
+CONTAINER_PORT=8000
+MODEL_ALIAS="qwen3.5-coder"
+
+echo "[*] Verwende HF_HOME = $HF_HOME"
+if [ ! -f "$HF_HOME/$MODEL_REL_PATH" ]; then
+  echo "[!] Modell-Datei nicht gefunden: $HF_HOME/$MODEL_REL_PATH" >&2
+  exit 1
+fi
+
+if docker ps -a --format '{{.Names}}' | grep -q "^${CONTAINER_NAME}\$"; then
+  echo "[*] Stoppe existierenden Container $CONTAINER_NAME ..."
+  docker rm -f "$CONTAINER_NAME" >/dev/null 2>&1 || true
+fi
+
+echo "[*] Starte llama.cpp-Server für Coder ..."
+docker run -d \
+  --gpus '"device=1,2"' \
+  --name "$CONTAINER_NAME" \
+  --restart unless-stopped \
+  -e HF_HOME="/hf_home" \
+  -v "$HF_HOME:/hf_home:ro" \
+  -p "${HOST_PORT}:${CONTAINER_PORT}" \
+  "$IMAGE" \
+    -m "/hf_home/${MODEL_REL_PATH}" \
+    --alias "${MODEL_ALIAS}" \
+    -c 131072 \
+    -n 16384 \
+    --jinja \
+    --no-context-shift \
+    --temp 0.2 \
+    --top-p 0.95 \
+    --top-k 40 \
+    --min-p 0.01 \
+    --repeat-penalty 1.05 \
+    --main-gpu 0 \
+    --tensor-split 0.5,0.5 \
+    -ngl 999 \
+    -fa on \
+    --kv-unified \
+    --cache-type-k q8_0 \
+    --cache-type-v q8_0 \
+    --batch-size 1024 \
+    --ubatch-size 512 \
+    --parallel 2 \
+    --cont-batching \
+    --host 0.0.0.0 \
+    --port "$CONTAINER_PORT"
+
+echo "[*] Warte auf HTTP ..."
+HTTP_READY=0
+for i in {1..90}; do
+  if curl -s "http://localhost:${HOST_PORT}/health" >/dev/null 2>&1 || \
+     curl -s "http://localhost:${HOST_PORT}/v1/models" >/dev/null 2>&1; then
+    HTTP_READY=1
+    break
+  fi
+  sleep 2
+done
+
+if [ "$HTTP_READY" -ne 1 ]; then
+  echo "[!] HTTP-Server wurde nicht rechtzeitig erreichbar." >&2
+  docker logs --tail 200 "$CONTAINER_NAME" || true
+  exit 1
+fi
+
+echo "[*] Teste Chat-Completion ..."
+curl -s -X POST "http://localhost:${HOST_PORT}/v1/chat/completions" \
+  -H "Content-Type: application/json" \
+  -d "{
+    \"model\": \"${MODEL_ALIAS}\",
+    \"messages\": [
+      { \"role\": \"system\", \"content\": \"Du bist ein präziser Coding-Assistent.\" },
+      { \"role\": \"user\", \"content\": \"Antworte nur mit dem Wort: bereit\" }
+    ],
+    \"max_tokens\": 8,
+    \"temperature\": 0.0,
+    \"stream\": false
+  }"
+
+echo
+echo "[*] Server bereit auf http://0.0.0.0:${HOST_PORT}"
+echo "[*] Stoppen mit: docker rm -f ${CONTAINER_NAME}"