diff --git a/README.md b/README.md
index e1943ec..63490c7 100644
--- a/README.md
+++ b/README.md
@@ -5,8 +5,10 @@ These are self contained Tcl interpreters that have a few necessary extensions,
 punk tcl runtimes can all load Tk as a loadable extension 
 - there is no separate Tk runtime
 
-The recommended current runtime for Windows is tclsh902z.exe
-as it has tcllibc built in, which can dramatically improve performance in some situations.
+The recommended current runtime for Windows is tclsh9.0.5-punk-r1.exe
+(see defaults.txt - the punkshell zig-buildsuite family runtime: piperepl-patched
+shell with Thread, tclvfs, tcllib + tcllibc attached; its .toml carries versions,
+provenance and test evidence). tclsh902z.exe remains available.
 
 In general, the startup, interp creation and library loading performance is better on zipfs based runtimes than those built on tclkit.
 
diff --git a/defaults.txt b/defaults.txt
index 699f500..71a985e 100644
--- a/defaults.txt
+++ b/defaults.txt
@@ -8,7 +8,7 @@
 #(platforms with no line here have no recommended default - punk-runtime tells
 #the user to name a runtime explicitly, e.g. freebsd-x86_64's only artifact is
 #a legacy 8.5-era kit not suitable as a recommendation.)
-win32-x86_64 tclsh902z.exe
+win32-x86_64 tclsh9.0.5-punk-r1.exe
 linux-x86_64 tclkit-902-Linux64-intel-dyn
 linux-arm tclkit-9.0.2-Linux64-arm-dyn
 macosx tclkit-902-Darwin64-dyn
diff --git a/win32-x86_64/sha1sums.txt b/win32-x86_64/sha1sums.txt
index a0eec65..49d305a 100644
--- a/win32-x86_64/sha1sums.txt
+++ b/win32-x86_64/sha1sums.txt
@@ -1,7 +1,13 @@
-22e11146eab873e3fcfd3453938800461212c497 *tclkit86bi.exe
-83a7fe3d3ff81b4f8432f298a1caeae29a0c430e *tclkit902.exe
-3a1e2f03e1962dd7c65d00aa40701a40721bc5a6 *tclsfe-x64.exe
-51d00ccc2e3c59e9b38c4607c928cb9d202d6c75 *tclsh901k.exe
-ec9d058279c47e9abe27443793d864ffaf84a672 *tclsh901t.exe
-9e1251d256ca69eefc8b2b8344d07b030bf542dd *tclsh902z.exe
-06c849dd114edee5598866c39cd0e69c09221e5e *tclsh902z_nometakit.exe
+22e11146eab873e3fcfd3453938800461212c497 *tclkit86bi.exe
+83a7fe3d3ff81b4f8432f298a1caeae29a0c430e *tclkit902.exe
+3a1e2f03e1962dd7c65d00aa40701a40721bc5a6 *tclsfe-x64.exe
+a6a23f2411f5a99eca7a1f7b7ee0c28c53f34523 *tclsh9.0.5-punk-bi-r1.exe
+f975f1c0812319efaaad9d4e4a0e3eb31f95dc33 *tclsh9.0.5-punk-bi-r1.toml
+63bc8f57eab65c0ee2f8994916e82133e595ed21 *tclsh9.0.5-punk-r1.exe
+3e4f12ed67d5be02e271fa3f8e5b1e997569855d *tclsh9.0.5-punk-r1.toml
+969ac1e1645db138304e93f72ab1b5e56727e48f *tclsh9.0.5-r1.exe
+f0d60e14c063c49fb1725a8ca058b315e12c1a22 *tclsh9.0.5-r1.toml
+51d00ccc2e3c59e9b38c4607c928cb9d202d6c75 *tclsh901k.exe
+ec9d058279c47e9abe27443793d864ffaf84a672 *tclsh901t.exe
+9e1251d256ca69eefc8b2b8344d07b030bf542dd *tclsh902z.exe
+06c849dd114edee5598866c39cd0e69c09221e5e *tclsh902z_nometakit.exe
diff --git a/win32-x86_64/tclsh9.0.5-punk-bi-r1.exe b/win32-x86_64/tclsh9.0.5-punk-bi-r1.exe
new file mode 100644
index 0000000..71a992d
Binary files /dev/null and b/win32-x86_64/tclsh9.0.5-punk-bi-r1.exe differ
diff --git a/win32-x86_64/tclsh9.0.5-punk-bi-r1.toml b/win32-x86_64/tclsh9.0.5-punk-bi-r1.toml
new file mode 100644
index 0000000..01486fd
--- /dev/null
+++ b/win32-x86_64/tclsh9.0.5-punk-bi-r1.toml
@@ -0,0 +1,37 @@
+#punkshell runtime artifact metadata (G-103) - generated by family_artifacts.tcl
+[artifact]
+name = "tclsh9.0.5-punk-bi-r1.exe"
+class = "runtime"
+variant = "punk-bi"
+working_name = "tclsh9.0.5-punk-bi.exe"
+revision = 1
+target = "win32-x86_64"
+sha1 = "a6a23f2411f5a99eca7a1f7b7ee0c28c53f34523"
+size = 9385063
+built = "2026-07-21T23:34:30Z"
+
+[runtime]
+tcl_patchlevel = "9.0.5"
+piperepl = true
+piperepl_default = "on"
+piperepl_opt_out = "TCLSH_PIPEREPL=0"
+attached_batteries = ["Thread 3.0.7", "vfs 1.4.2", "tcllib 2.0", "tcllibc 2.0", "Tk 9.0.2", "tklib 0.9"]
+
+[provenance]
+suite = "suite_tcl90"
+toolchain = "zig 0.16.0"
+optimize = "ReleaseFast"
+tcl_checkout = "1a9c3b9d965d66f69f037cab6718d64bd802ef2cc8520d6c20f13b6803cd162f"
+thread_checkout = "caa1d3aa302798de2200de7297f9d4ca40102a5df108ed21f14a90cea9691cad"
+tclvfs_checkout = "unrecorded"
+tk_checkout = "effef6c657952d3304048267fa40a795a318997af2910611f5247586f9e3e181"
+tcllib_checkout = "unrecorded"
+tklib_checkout = "unrecorded"
+
+[tests]
+tclcore = "result=pass mode=gate total=69552 passed=56039 skipped=13504 failed=9"
+tcllib = "result=pass mode=record total=62328 passed=59240 skipped=3034 failed=54"
+tclvfs = "result=pass mode=gate total=51 passed=39 skipped=5 failed=7"
+thread = "result=pass mode=gate total=143 passed=117 skipped=26 failed=0"
+tk = "result=pass mode=record total=9865 passed=8127 skipped=1711 failed=27"
+tklib = "result=pass mode=record total=796 passed=688 skipped=90 failed=18"
diff --git a/win32-x86_64/tclsh9.0.5-punk-r1.exe b/win32-x86_64/tclsh9.0.5-punk-r1.exe
new file mode 100644
index 0000000..f427d90
Binary files /dev/null and b/win32-x86_64/tclsh9.0.5-punk-r1.exe differ
diff --git a/win32-x86_64/tclsh9.0.5-punk-r1.toml b/win32-x86_64/tclsh9.0.5-punk-r1.toml
new file mode 100644
index 0000000..0fe6e28
--- /dev/null
+++ b/win32-x86_64/tclsh9.0.5-punk-r1.toml
@@ -0,0 +1,37 @@
+#punkshell runtime artifact metadata (G-103) - generated by family_artifacts.tcl
+[artifact]
+name = "tclsh9.0.5-punk-r1.exe"
+class = "runtime"
+variant = "punk"
+working_name = "tclsh9.0.5-punk.exe"
+revision = 1
+target = "win32-x86_64"
+sha1 = "63bc8f57eab65c0ee2f8994916e82133e595ed21"
+size = 6613045
+built = "2026-07-21T23:34:30Z"
+
+[runtime]
+tcl_patchlevel = "9.0.5"
+piperepl = true
+piperepl_default = "on"
+piperepl_opt_out = "TCLSH_PIPEREPL=0"
+attached_batteries = ["Thread 3.0.7", "vfs 1.4.2", "tcllib 2.0", "tcllibc 2.0"]
+
+[provenance]
+suite = "suite_tcl90"
+toolchain = "zig 0.16.0"
+optimize = "ReleaseFast"
+tcl_checkout = "1a9c3b9d965d66f69f037cab6718d64bd802ef2cc8520d6c20f13b6803cd162f"
+thread_checkout = "caa1d3aa302798de2200de7297f9d4ca40102a5df108ed21f14a90cea9691cad"
+tclvfs_checkout = "unrecorded"
+tk_checkout = "effef6c657952d3304048267fa40a795a318997af2910611f5247586f9e3e181"
+tcllib_checkout = "unrecorded"
+tklib_checkout = "unrecorded"
+
+[tests]
+tclcore = "result=pass mode=gate total=69552 passed=56039 skipped=13504 failed=9"
+tcllib = "result=pass mode=record total=62328 passed=59240 skipped=3034 failed=54"
+tclvfs = "result=pass mode=gate total=51 passed=39 skipped=5 failed=7"
+thread = "result=pass mode=gate total=143 passed=117 skipped=26 failed=0"
+tk = "result=pass mode=record total=9865 passed=8127 skipped=1711 failed=27"
+tklib = "result=pass mode=record total=796 passed=688 skipped=90 failed=18"
diff --git a/win32-x86_64/tclsh9.0.5-r1.exe b/win32-x86_64/tclsh9.0.5-r1.exe
new file mode 100644
index 0000000..19e2b42
Binary files /dev/null and b/win32-x86_64/tclsh9.0.5-r1.exe differ
diff --git a/win32-x86_64/tclsh9.0.5-r1.toml b/win32-x86_64/tclsh9.0.5-r1.toml
new file mode 100644
index 0000000..650805b
--- /dev/null
+++ b/win32-x86_64/tclsh9.0.5-r1.toml
@@ -0,0 +1,35 @@
+#punkshell runtime artifact metadata (G-103) - generated by family_artifacts.tcl
+[artifact]
+name = "tclsh9.0.5-r1.exe"
+class = "runtime"
+variant = "plain"
+working_name = "tclsh9.0.5.exe"
+revision = 1
+target = "win32-x86_64"
+sha1 = "969ac1e1645db138304e93f72ab1b5e56727e48f"
+size = 6610485
+built = "2026-07-21T23:34:30Z"
+
+[runtime]
+tcl_patchlevel = "9.0.5"
+piperepl = false
+attached_batteries = ["Thread 3.0.7", "vfs 1.4.2", "tcllib 2.0", "tcllibc 2.0"]
+
+[provenance]
+suite = "suite_tcl90"
+toolchain = "zig 0.16.0"
+optimize = "ReleaseFast"
+tcl_checkout = "1a9c3b9d965d66f69f037cab6718d64bd802ef2cc8520d6c20f13b6803cd162f"
+thread_checkout = "caa1d3aa302798de2200de7297f9d4ca40102a5df108ed21f14a90cea9691cad"
+tclvfs_checkout = "unrecorded"
+tk_checkout = "effef6c657952d3304048267fa40a795a318997af2910611f5247586f9e3e181"
+tcllib_checkout = "unrecorded"
+tklib_checkout = "unrecorded"
+
+[tests]
+tclcore = "result=pass mode=gate total=69552 passed=56039 skipped=13504 failed=9"
+tcllib = "result=pass mode=record total=62328 passed=59240 skipped=3034 failed=54"
+tclvfs = "result=pass mode=gate total=51 passed=39 skipped=5 failed=7"
+thread = "result=pass mode=gate total=143 passed=117 skipped=26 failed=0"
+tk = "result=pass mode=record total=9865 passed=8127 skipped=1711 failed=27"
+tklib = "result=pass mode=record total=796 passed=688 skipped=90 failed=18"