feat(codex): ship the compaction hook as a plugin-provided hook

The compaction re-injection hook previously required users to hand-merge
an example into user-level ~/.codex/hooks.json — which renders in the
Codex hooks UI as an anonymous, unattributed "Hook 1" and puts the
install burden on every user. Restore the plugin-provided delivery this
repo used before "Remove Codex hooks" (640ce6c0): the Codex manifest
points hooks at hooks/hooks-codex.json, which runs session-start-codex
via ${PLUGIN_ROOT}/hooks/run-hook.cmd with matcher "compact".

Unlike the removed hook, this one never fires at session start — Codex
surfaces skills natively there, which is why the old startup-injecting
hook was removed. The matcher plus the script's own source gate restrict
it to post-compaction re-starts. The explicit manifest pointer also
keeps suppressing Codex's hooks/hooks.json auto-discovery fallback,
which the previous empty-object declaration existed for (7d8d3d4b).

The Codex portal archive now ships hooks/hooks-codex.json,
hooks/run-hook.cmd, and hooks/session-start-codex; other-harness hook
files stay excluded.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Drew Ritter
2026-07-23 13:26:01 -07:00
parent 5ab3297ad7
commit 34d4f64f91
9 changed files with 76 additions and 65 deletions

View File

@@ -52,25 +52,37 @@ if not plugin_manifest.exists():
manifest = json.loads(plugin_manifest.read_text(encoding="utf-8"))
assert_equal(manifest.get("name"), plugin.get("name"), "plugin manifest name")
# Codex auto-discovers a plugin's hooks/hooks.json whenever the Codex manifest
# has no `hooks` field: load_plugin_hooks falls back to a hardcoded
# DEFAULT_HOOKS_CONFIG_FILE = "hooks/hooks.json" and registers it. That file is
# the Claude Code SessionStart hook, it is tracked in this repo, and this
# marketplace installs the whole repo root (source url "./"), so on Codex the
# fallback re-registers the SessionStart hook and its install-time trust prompt.
# Declaring an empty inline hooks object ({}) parses as an empty inline hook set
# and suppresses the auto-discovery. An absent field, an empty array ([]), and
# an empty inline list all collapse back to the fallback, so the value must be
# exactly an empty object.
# The Codex manifest must declare its hooks explicitly. An absent field makes
# load_plugin_hooks fall back to a hardcoded DEFAULT_HOOKS_CONFIG_FILE =
# "hooks/hooks.json" — the Claude Code SessionStart hook, which injects the
# bootstrap at startup and must not run on Codex. The explicit pointer both
# registers the Codex compaction re-injection hook and overrides that fallback.
hooks_config = repo_root / "hooks" / "hooks.json"
if not hooks_config.exists():
raise AssertionError("hooks/hooks.json must exist (Claude Code SessionStart hook)")
assert_equal(
manifest.get("hooks"),
{},
"Codex manifest must declare empty hooks {} to suppress hooks/hooks.json auto-discovery",
"./hooks/hooks-codex.json",
"Codex manifest must point hooks at the Codex hook config (an absent field "
"falls back to auto-discovering the Claude Code hooks/hooks.json)",
)
codex_hooks_path = repo_root / "hooks" / "hooks-codex.json"
if not codex_hooks_path.exists():
raise AssertionError("hooks/hooks-codex.json must exist (Codex manifest points at it)")
codex_hooks = json.loads(codex_hooks_path.read_text(encoding="utf-8"))
session_start = codex_hooks["hooks"]["SessionStart"]
assert_equal(len(session_start), 1, "Codex SessionStart hook group count")
assert_equal(session_start[0].get("matcher"), "compact", "Codex hook matcher")
entry = session_start[0]["hooks"][0]
assert_equal(entry.get("type"), "command", "Codex hook type")
command = entry.get("command", "")
if "${PLUGIN_ROOT}" not in command or not command.endswith("session-start-codex"):
raise AssertionError(
f"Codex hook command must run session-start-codex via ${{PLUGIN_ROOT}}: {command!r}"
)
print("Codex marketplace manifest looks good")
PY

View File

@@ -141,7 +141,7 @@ tar_extracted="$TEST_ROOT/tar-extracted"
write_metadata_fixture "$metadata_source"
source_hooks="$(python3 -c 'import json; print(json.load(open("'"$REPO_ROOT"'/.codex-plugin/plugin.json")).get("hooks"))')"
assert_equals "$source_hooks" "{}" "source Codex manifest suppresses local hook auto-discovery"
assert_equals "$source_hooks" "./hooks/hooks-codex.json" "source Codex manifest declares the Codex hook config"
if output="$("$SCRIPT_UNDER_TEST" --allow-dirty --metadata-source "$metadata_source" --output "$archive" 2>&1)"; then
pass "package script exits successfully"
@@ -163,10 +163,13 @@ assert_contains "$output" "SHA-256:" "reports archive checksum"
extract_archive "$archive" "$extracted"
archive_paths="$(list_archive "$archive" | normalize_archive_paths)"
unexpected_pattern='(^superpowers/|^\.agents/|^hooks/|package\.json$|^\.git|^\.pytest_cache|^\.ruff_cache|^scripts/|^tests/|^docs/|^evals/|^lib/|^\.claude|^\.cursor|^\.kimi|^\.opencode|^\.pi|^AGENTS\.md$|^CLAUDE\.md$|^GEMINI\.md$|^RELEASE-NOTES\.md$|^CHANGELOG\.md$)'
unexpected_pattern='(^superpowers/|^\.agents/|^hooks/hooks\.json$|^hooks/hooks-cursor\.json$|^hooks/session-start$|package\.json$|^\.git|^\.pytest_cache|^\.ruff_cache|^scripts/|^tests/|^docs/|^evals/|^lib/|^\.claude|^\.cursor|^\.kimi|^\.opencode|^\.pi|^AGENTS\.md$|^CLAUDE\.md$|^GEMINI\.md$|^RELEASE-NOTES\.md$|^CHANGELOG\.md$)'
assert_not_matches "$archive_paths" "$unexpected_pattern" "archive excludes source-only paths"
assert_contains "$archive_paths" ".codex-plugin/plugin.json" "archive includes Codex manifest"
assert_contains "$archive_paths" "skills/brainstorming/SKILL.md" "archive includes skills"
assert_contains "$archive_paths" "hooks/hooks-codex.json" "archive includes Codex hook config"
assert_contains "$archive_paths" "hooks/session-start-codex" "archive includes Codex hook script"
assert_contains "$archive_paths" "hooks/run-hook.cmd" "archive includes hook runner"
assert_contains "$archive_paths" "skills/brainstorming/agents/openai.yaml" "archive includes OpenAI skill metadata"
assert_contains "$archive_paths" "assets/app-icon.png" "archive includes app icon"
assert_contains "$archive_paths" "assets/superpowers-small.svg" "archive includes composer icon"