fix: answer Claude Code SessionEnd with a valid response (v0.2.2)

[tupe12334]

Problem

In Claude Code, every session end shows:

SessionEnd hook [~/.cargo/bin/steplock] failed: Hook JSON output validation failed — decision: Invalid option: expected one of "approve"|"block"

polyhook 0.1.11 labeled Claude Code's SessionEnd, and SessionStart, as Gemini CLI because the two agents share those event names. steplock therefore answered with Gemini's {"decision":"allow"}, which Claude Code rejects.

Fix

• Require polyhook = "0.1.12". That release is the 0.1.x backport (fix(core): detect Claude Code SessionStart/SessionEnd (0.1.x backport of #64) polyhook#81) of fix(core): detect Claude Code lifecycle hooks without tool fields polyhook#64, and it tells the two agents apart via CLAUDE_PROJECT_DIR.
  • steplock stays on the 0.1 line on purpose. In polyhook 0.2.x, approve() on PreToolUse is an explicit permissionDecision: allow, which would auto-approve every Bash command that steplock gates.
• Bump to 0.2.2, with a CHANGELOG entry.
• Cargo.lock changes only polyhook, polyhook-core and steplock. Cargo also re-pointed one stale edge: the dev-dependency tempfile now uses getrandom 0.4.2, which was already locked.

Also: lint ratchet

• Deny clippy::unnecessary_wraps. validate_dir and run_validate never returned Err, so the Validate arm's "validate failed" branch was unreachable. They now return bool, and the tests were updated.
• Drop clippy::from_iter_instead_of_collect. Clippy has removed it, so it produced the only remaining warning.

Verified

I replayed real hook payloads captured from Claude Code and Gemini CLI 0.39.1 through this build, which uses the published crates.io 0.1.12:

agent / event	before (0.2.1)	after
Claude Code SessionEnd	{"decision":"allow"} (rejected)	{}
Claude Code SessionStart	{"decision":"allow"}	{}
Claude Code PreToolUse / PostToolUse / Stop / UserPromptSubmit	{}	{} (PreToolUse stays passive, so no auto-allow)
Gemini CLI SessionStart / SessionEnd	{"decision":"allow"}	{"decision":"allow"} (unchanged; that's Gemini's format)

cargo fmt --check, clippy --all-targets -D warnings (zero warnings) and cargo test are green.

🤖 Generated with Claude Code