Add Stop hook support for Claude Code integration #13
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Add configurable hooks that run when Claude Code fires the Stop event. Users configure hooks in `.brepl/hooks.edn` with two types: - `:repl` - Execute Clojure code via nREPL - `:bash` - Run shell commands Hooks support retry-on-failure with configurable max retries. Exit codes: - 0: success, Claude can stop - 1: failure reported, Claude can stop - 2: blocking, Claude must continue working Also fixes `handle-session-end` to parse JSON from stdin instead of expecting command-line args, matching Claude Code's hook protocol.
- Replace `:retry-on-failure?` with `:required?` for unified semantics - Make `:name` optional (auto-derived from command/code) - Include stdout in error output so Claude sees actual failures - Add "Fix the issues shown below" guidance in retry messages - Handle nREPL connection errors with actionable message - Exit 2 on first no-server attempt, exit 1 on second (forces Claude to react)
Accept both forms: :code (restart) ; s-expression (preferred) :code "(restart)" ; string still works
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Summary
Add user-configurable stop hooks that run when Claude Code fires the Stop event. Users can define hooks in
.brepl/hooks.ednto run checks (linters, tests) before Claude finishes working.Changes
lib/stop_hooks.cljwith spec validation, REPL/bash execution, retry trackingbrepl hook stopCLI command to handle Stop event.brepl/hooks.edntemplate onbrepl hook installhandle-session-endto parse JSON from stdin (matching Claude Code protocol)Hook Configuration
{:stop [{:type :bash :command "clj-kondo --lint ." :required? true ; Must pass - retries on failure :max-retries 10} {:type :repl :code "(clojure.test/run-tests)" :required? true}]}Exit Code Behavior
0- All hooks passed, Claude can stop1- Hook failed (optional or max retries reached), Claude informed2- Required hook failed, Claude must continue workingTesting