The five Python splits this session were made safe by a throwaway ast
identity check. There is no ast for bash, so meta/scripts/verify_shell_split.sh
does the same job with shfmt -mn (minify: strips comments and indentation,
keeps logic), hashing each top-level function and naming the one that differs.
shfmt is already a REQUIRED_TOOLS binary, so this adds no dependency.
Validated in all three directions before trusting it: an unchanged copy is
IDENTICAL, a copy with blank lines inserted is IDENTICAL, and a one-character
logic change ($1 -> $2) is caught and named. The first mutation attempt used
sed 's/exit 1/exit 2/' on a file with no 'exit 1' and reported IDENTICAL - the
harness was fine, the test was vacuous. That trap is now documented, because a
normalizer that silently passes everything is worse than none.
Also triaged all 29 over-cap shell scripts for deployed copies, which the
trace harness cannot see. The finding that changes the plan: deploy.sh copies
a hardcoded per-file list into /data/local/tmp/focus_mode and never deploys
lib/, so an entry+lib seam would break focus mode on the phone at its first
source - for 8 of the 29, not the 2 the brief named. Those scripts source only
config.sh, which is on the copy list, so a sibling-file seam works provided
deploy.sh's list grows in the same commit.
16 scripts have no deployed copy and are safe to split conventionally.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011w2Pj4Ek3ZNMQVYcFHgXDY
transcribe.sh 473 -> 39, setup_activitywatch.sh 457 -> 102 and
setup_wireguard_ssh.sh 464 -> 136.
enforce_vbox_hosts.sh is reverted: its seam landed inside a heredoc and
the resulting lib had an unterminated here-document. That is the worst
failure yet, because shellcheck reported it only as SC1094 on the caller
- which reads like a nicety, not a file that will not parse. The
verifier now runs bash -n over every lib before linting the entry and
names the offending file; proven by corrupting a copy and restoring it.
Also guarded a cd before `git clone ... .`, which would otherwise have
cloned an AUR repo into the caller's directory.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011w2Pj4Ek3ZNMQVYcFHgXDY
meta/scripts/verify_shell_split.sh was a scratchpad file; it has caught
five bugs across 18 splits that bash -n and shellcheck both passed on,
so it belongs in the repo. Tested in both directions - it fails on a
deliberately broken source line and passes once restored.
docs/shell-split-recipes.md gains what the last two batches taught:
splitting a file twice can displace the first cut's source line, globals
read across a seam have three different fixes depending on how many, and
unguarded cd shows up constantly because a moved function finally gets
linted on its own.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011w2Pj4Ek3ZNMQVYcFHgXDY
