- run no longer launches the last runtime alphabetically: resolution is PUNK_ACTIVE_RUNTIME env override -> bin/runtime/<platform>/active.toml (constrained single-key toml, written by the new 'use <name>' subcommand, marked with * in list, covered by the existing bin/* VCS ignores) -> sole installed candidate -> error listing candidates. First fetch sets active only when none recorded; later fetches never steal it. Stale active (file removed) reported with reselect guidance.
- bash/zsh payload fetch reaches checksum parity with the powershell payload: fetches sha1sums.txt, locates the stored hash, skips when the local copy matches, downloads to .tmp and installs only on sha1 match; sha1 tool detection (sha1sum/shasum/sha1/openssl) with refusal of unverified downloads when none present; optional runtime-name argument added (fetch <name>)
- fixes: powershell "stored hash from sha1sums.txt" printed an undefined variable ($storedhash -> $stored_sha1); bash MSYS branch invalid assignment (interp = ...); candidate listings for run/list/use exclude .tmp leftovers and non-runtime files (a stray .txt could previously be selected by run)
- runtime scriptset sources relocated to src/scriptapps/bin (proper home alongside getzig.*); bin/runtime.cmd regenerated via scriptwrap from the new location - roundtrip test path updated, suite green on 9.0.3 (8 pass + unix-gated skip), runtime.bash syntax-checked under bash and zsh
- verified live on windows: multiple-runtimes-no-active errors with candidates (previously silently launched tksfe-twapi-x64), use/list/run against tclsfe-x64 and env override to tclsh902z, fetch no-steal + first-fetch auto-set, checksum-match no-download path
- docs: bin/AGENTS.md documents the fetch/use/run contract and updated generated-polyglot workflow paths; src/scriptapps/AGENTS.md scriptset-home wording updated
Assisted-by: harness=claude; primary-model=claude-fable-5; api-location=anthropic.com
- new src/tests/modules/punk/mix/testsuites/scriptwrap/multishell.test (9 tests, green on tcl 9.0.3 + 8.7, unix exec case constraint-gated): scriptset wrap via the module-provided punk.multishell.cmd template (payloads + _wrap.toml fixture) - output produced, MULTISHELL magic line, payloads embedded verbatim, configured win32 nextshell present, LF-only endings, byte-identical re-wrap determinism; checkfile 512-byte label/boundary validation reports no label location errors for a fresh wrap AND for the committed bin/runtime.cmd; the runtime scriptset ROUND-TRIP pin - re-wrapping src/scriptapps runtime.ps1+runtime.bash+runtime_wrap.toml reproduces bin/runtime.cmd byte for byte (verified identical before pinning), so hand-edits to the output or unregenerated payload changes both fail; execution smoke - cmd.exe runs the polyglot and dispatches the powershell payload (windows), sh payload execution gated to unix (on windows the shell layer deliberately relaunches via the win32 nextshell)
- guidance strengthened so "fix bin/<name>.cmd" routes to sources: root AGENTS.md bin/ index entry now states the .cmd polyglots are scriptwrap-generated from src/scriptapps; bin/AGENTS.md gains a "Generated polyglot .cmd scripts - never edit in place" section with the 4-step fix workflow (edit payloads/toml, re-wrap with multishell -askme 0, heed checkfile ERRORs, commit source + regenerated output together); src/scriptapps/AGENTS.md documents the scriptset->bin/*.cmd relationship and regeneration command; tests index updated
- context: the polyglot technique is deliberately maintained despite fragility (user direction 2026-07-10) until hiding techniques close in the underlying languages - these pins are the guardrails
Assisted-by: harness=claude; primary-model=claude-fable-5; api-location=anthropic.com
Julian Noble