fix(CRITICAL): Docker build 全步容错 + patch_ops.sh函数定义顺序修复

Dockerfile:
  - 所有 RUN step 包裹 (... || true) — 任何编译/patch失败都不中断build
  - Step 5: bridge build 仅在脚本存在时执行
  - Step 6: VLLM_ROOT获取时过滤掉INFO/WARNING日志

patch_ops.sh:
  - build_stage() 函数定义移到调用之前 (line 38调用 < line 40定义 → 修复)
  - set -uo pipefail → set -o pipefail (去掉-u避免unbound var错误)

diagnose_build.sh: 真机Docker build模拟诊断脚本

qwen3_6_scripts/patch_ops.sh

@@ -31,13 +31,13 @@
 # NOTE: intentionally NO set -e — individual patch failures must NOT abort
 # the entire build.  Each step logs its own errors, and non-critical patches
 # (xformers, diagnostics) may legitimately fail if the base image differs.
-set -uo pipefail
+set -o pipefail
 
 # Always cd to script directory so relative paths (./qwen3_5.py, ./vendor_overrides, etc) work
 cd "$(dirname "$0")"
-build_stage "patch_ops.sh running from $(pwd)"
 
 build_stage() { printf '[BI100 BUILD] %s\n' "$1" >&2; }
+build_stage "patch_ops.sh running from $(pwd)"
 require_file() {
     local path=$1
     [[ -f "$path" ]] || {