Claude logs a "on-input-received.sh not found" error on every prompt

[williamthorsen]

Problem

In any codeassembly session whose working directory is a subdirectory, every submitted prompt logs a non-blocking hook error:

/bin/sh: .claude/hooks/on-input-received.sh: No such file or directory  (exit 127)

The UserPromptSubmit and Notification hooks in .claude/settings.json invoke their scripts by a cwd-relative path. Claude Code runs hook commands in the session's current directory, so any non-root cwd fails to resolve the path, and the errors flood the Claude logs and chat history.

Context

Both hooks exist only to append input_received / waiting_for_input events to an orchestrated run's run-log.jsonl, feeding the factory visualization. That visualization has been dormant for months, and the hooks are codeassembly-repo-local, so they never fire for orchestration in any other repo. The instrumentation currently produces only noise.

The breadcrumb the hooks read (.claude/tmp/active-run-dir) has a second, independent consumer: resolve-frontmatter.sh reads it to stamp run_id on artifact frontmatter. It is not hook-owned.

Proposed solution

Remove the hooks rather than repair the path. The feature they serve is dormant, so fixing the path invests in dead instrumentation; the approach can be reconsidered when the visualization is revived.

Delete both hook blocks and both scripts. Preserve the breadcrumb mechanism and the visualization's dormant read-side (the run-core event schema and folding, the factory demo recording): that machinery is inert, produces no noise, and is still needed to parse historical run logs. Re-anchor the orchestrate/SKILL.md breadcrumb rationale, which currently cites the hooks, onto its remaining consumer (run_id resolution).

Acceptance criteria

Must have

• No "No such file or directory" hook error is logged on prompt submission or notification, from any working directory.
• Both hook blocks are removed from .claude/settings.json, and both hook scripts plus the emptied .claude/hooks/ directory are deleted.
• The breadcrumb mechanism and its resolve-frontmatter.sh consumer remain intact; run_id frontmatter resolution is unaffected.
• orchestrate/SKILL.md no longer justifies the breadcrumb by the removed hooks.