refactor(core): remove hardcoded PATH reset

PATH='/bin:/usr/bin:/usr/local/bin' was intended as a security measure
against PATH injection. For a script invoked manually in the user's own
shell the benefit is marginal: if an attacker controls the user's PATH
they already have larger problems. The cost is real — tools installed
outside these three directories (Homebrew, Nix, ~/.local/bin) silently
fail, and the documented workaround of prepending a path at invocation
time does not work because the script overwrites PATH immediately on
startup.

Remove the PATH reset and all associated documentation. The remaining
hardening measures (unalias -a, hash -r, strict set -o flags, umask) are
retained.

1 files changed, 0 insertions, 8 deletions

diff --git a/README.md b/README.md
index a01de23..09ee1d3 100644
--- a/README.md
+++ b/README.md
@@ -59,14 +59,6 @@ install -Dm644 transcode.sh.bash-completion \
     ~/.local/share/bash-completion/completions/transcode.sh
 ```
 
-> **PATH note:** the script resets `PATH` to `/bin:/usr/bin:/usr/local/bin`
-> for security. If your `ffmpeg` lives elsewhere (e.g. Homebrew on macOS,
-> Nix), prepend its directory:
->
-> ```sh
-> PATH="/opt/homebrew/bin:$PATH" transcode.sh input.mp4
-> ```
-
 ## Configuration
 
 ### Presets