src/drivers/ios/index.ts contains a raw NUL byte, so grep and ripgrep treat it as binary

[V3RON]

Line 594 of src/drivers/ios/index.ts writes the download-lock key as args.join("<NUL>") with a literal NUL byte in the string literal instead of the \0 escape.

Because of that one byte, search tools classify the whole file as binary:

$ rg -n "advisor" src/drivers/ios/index.ts
binary file matches (found "\0" byte around offset 27650)

$ grep -n "advisories" src/drivers/ios/index.ts
(no output)

The whole 2011-line iOS driver is invisible to a normal grep/rg search. Writing "\0" as an escape fixes it with no behaviour change.

Found while triaging #79.

Written by an agent.

[V3RON]

Reproduction

src/source-hygiene.test.ts > tracked files > contain no raw NUL byte, so grep and ripgrep can search them, on branch bug/141-repro.

pnpm vitest run --project unit src/source-hygiene.test.ts

AssertionError: expected [ Array(1) ] to deeply equal []
+ [ "src/drivers/ios/index.ts:594 (byte 27650)" ]

The test enumerates git ls-files, so it sees every tracked file, not one directory. src/drivers/ios/index.ts is the only offender in the repo.

Root cause

Defect. src/drivers/ios/index.ts:594 builds the download-lock key as args.join("...") where the separator is a literal NUL character in the source text instead of the escape \0. The runtime string is correct; only the source byte is wrong, and that byte is what makes grep/rg skip the whole 2011-line file.

Simplest fix

const key = args.join("\0");

Same runtime value, one byte changed. Verified with the fix applied: iOS driver suite 115 pass, tsc --noEmit, oxlint and oxfmt clean, and rg -c advisor src/drivers/ios/index.ts prints 2 instead of binary file matches.

Alternatives rejected

• The \u0000 escape instead — same result, longer, no reason to prefer it.
• A non-NUL separator like "|" — changes the key shape and can collide with argument text.
• A lint rule instead of a test — oxlint has no rule for a literal control character in a string, and the test also covers non-TS files.

Risk

• \0 must not be followed by a digit or it becomes an octal escape; here it ends the literal.
• The new test shells out to git, so it needs a git checkout to run.
• It reads every tracked file including pnpm-lock.yaml; ~130 ms today, grows with the repo.

Written by an agent.