sync: WIN-BOWEI 2026-08-10 fpga_flash 增 Zynq BOOT.bin/QSPI 脚本，rtl-ip-replace 与 sim-rtl-flow 更新

- fpga_flash: 新增 build_zynq_boot.py / program_zynq_qspi.py（bootgen + program_flash，
  含备份、SHA-256/容量/marker 守卫）；vivado_env.py 增 resolve_sdk_dir（SDK_ROOT/SDK_PATH）；
  SKILL.md 补 Zynq 烧写流程，示例去掉写死的 D:\Xilinx\SDK\2018.1，改由 skills_env.md 解析。
- rtl-ip-replace: gen_ip.tcl / namespace_ip.py 更新。
- sim-rtl-flow: SKILL.md 与 run_sim_rtl_flow.py 更新。

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

rtl-ip-replace/scripts/namespace_ip.py

@@ -8,7 +8,27 @@ coexist in one xsim `work` library for the dual-DUT cycle-true comparison.
   left untouched -- they are not declared here.
 
 Run LAST, after rom_to_ip.py / ram_to_ip.py / any hand edits (CORDIC, FIFO).
-Idempotent: modules already ending in _IP are skipped.
+Idempotent: a name already ending in _IP is never suffixed twice.
+
+INCREMENTAL RUNS -- THE BUG THIS DOCSTRING USED TO DESCRIBE AS A FEATURE.
+The rename set used to be "modules declared here whose name does NOT already end
+in _IP", i.e. it treated an already-suffixed declaration as nothing left to do.
+That is wrong the moment incr_plan.py restores previously-rewritten files and
+drops ONE freshly regenerated file beside them, which is the normal incremental
+case:
+
+    EncAddr.v    restored from the last run  ->  declares EncAddr_IP
+    DpdTrain.v   freshly generated           ->  declares DpdTrain, instantiates EncAddr
+
+`EncAddr` was no longer in the rename set, so the new DpdTrain.v kept its bare
+`EncAddr u_EncAddr (...)` while the file that defines it had been renamed away.
+The delivery then elaborated only because the dual-DUT bench compiled the GOLDEN
+tree into the same work library, where a bare `EncAddr` still exists; synthesis,
+which sees the delivery alone, failed with "module 'EncAddr' not found".
+
+The rename set is therefore built from the BASE NAME of every declaration --
+X_IP counts as X -- so a regenerated file is namespaced against the whole
+delivery, not just against the part of it that has not been namespaced yet.
 """
 import argparse, os, re
 
@@ -19,13 +39,20 @@ def main():
     d = os.path.abspath(a.rtl_ip_dir)
     files = [os.path.join(d, f) for f in os.listdir(d) if f.endswith('.v')]
 
-    mods = []
+    mods, already = [], []
     for p in files:
         for m in re.finditer(r'^\s*module\s+(\w+)', open(p, encoding='utf-8', errors='replace').read(), re.M):
-            if not m.group(1).endswith('_IP'):
-                mods.append(m.group(1))
+            n = m.group(1)
+            if n.endswith('_IP'):
+                already.append(n[:-3])
+                mods.append(n[:-3])      # base name: a restored file still OWNS this name
+            else:
+                mods.append(n)
     mods = sorted(set(mods), key=len, reverse=True)
     print('modules:', mods)
+    if already:
+        print('already namespaced (kept in the rename set as base names):',
+              sorted(set(already)))
 
     for p in files:
         txt = open(p, encoding='utf-8', errors='replace').read()