- 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
Julian Noble
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