feat(languages): ship the missing python and typescript hooks

The python and typescript bundles carried rules and a coverage script but no pre-commit hook, so any project installing one got no credential scan on commit. Both now ship all four components the README documents: the shared secret scan, a validate-on-edit hook, settings wiring, and a seed CLAUDE.md. Verified against a real repo: a commit carrying an AWS key is refused.

install-lang now warns when a bundle is missing a documented component. That's the half that keeps this from recurring. Whoever adds the sixth bundle will forget something too, and today the installer prints success either way.

Two things fell out of the build. node --check is unusable on TypeScript: it ignores --experimental-strip-types, so it rejects valid TS and accepts broken TS. The hook uses tsc filtered to syntactic diagnostics instead. And completing the bundles means every pair now collides on settings.json and pre-commit, so no two compose without FORCE=1. The earlier "bundles already compose" reading rested on these two being incomplete. Filed for a real decision; clock-panel is the project that wants it.

Also stamps :LAST_REVIEWED: at task creation, with a lint checker to catch misses. Writing a task is reviewing it, so leaving the stamp off pushed every fresh task to the top of the next review batch to be re-derived by someone with less context than its author had. Tonight's sweep sent the staleness count from 13 to 22 while the list got more accurate.

1 files changed, 117 insertions, 0 deletions

diff --git a/languages/python/tests/validate-python.bats b/languages/python/tests/validate-python.bats
new file mode 100644
index 0000000..b5e4957
--- /dev/null
+++ b/languages/python/tests/validate-python.bats
@@ -0,0 +1,117 @@
+#!/usr/bin/env bats
+#
+# Tests for languages/python/claude/hooks/validate-python.sh — the PostToolUse
+# hook that syntax-checks edited Python files and blocks on a violation.
+#
+# The hook reads tool-call JSON on stdin and extracts the file path, so each
+# test pipes a JSON payload naming a real file it wrote into a temp dir.
+#
+# The syntax gate is python3's own compiler, which is present wherever the hook
+# can meaningfully run, so those tests never skip. The lint gate (ruff) is
+# optional and its tests skip when it's absent, matching the bash bundle's
+# treatment of shellcheck.
+
+HOOK="$(cd "$(dirname "$BATS_TEST_FILENAME")/.." && pwd)/claude/hooks/validate-python.sh"
+
+setup() {
+  TEST_DIR="$(mktemp -d -t validate-python-bats.XXXXXX)"
+}
+
+teardown() {
+  rm -rf "$TEST_DIR"
+}
+
+payload() {
+  printf '{"tool_input": {"file_path": "%s"}}' "$1"
+}
+
+# ---- Normal ----------------------------------------------------------
+
+@test "validate-python: a clean .py file passes silently (exit 0)" {
+  printf 'def f(x):\n    return x + 1\n' > "$TEST_DIR/clean.py"
+  run bash "$HOOK" <<< "$(payload "$TEST_DIR/clean.py")"
+  [ "$status" -eq 0 ]
+  [ -z "$output" ]
+}
+
+@test "validate-python: a .pyi stub is validated too" {
+  printf 'def f(x: int) -> int: ...\n' > "$TEST_DIR/clean.pyi"
+  run bash "$HOOK" <<< "$(payload "$TEST_DIR/clean.pyi")"
+  [ "$status" -eq 0 ]
+}
+
+# ---- Error -----------------------------------------------------------
+
+@test "validate-python: a syntax error blocks (exit 2, names the failure)" {
+  printf 'def f(:\n    return 1\n' > "$TEST_DIR/bad.py"
+  run bash "$HOOK" <<< "$(payload "$TEST_DIR/bad.py")"
+  [ "$status" -eq 2 ]
+  [[ "$output" == *"SYNTAX"* ]]
+}
+
+@test "validate-python: the block payload is valid JSON carrying the context" {
+  printf 'def f(:\n' > "$TEST_DIR/bad.py"
+  run bash "$HOOK" <<< "$(payload "$TEST_DIR/bad.py")"
+  [ "$status" -eq 2 ]
+  # The first line of stdout must parse as JSON and carry the hook event name.
+  echo "$output" | head -1 | jq -e '.hookSpecificOutput.hookEventName == "PostToolUse"'
+}
+
+@test "validate-python: a ruff violation blocks when ruff is installed" {
+  command -v ruff >/dev/null 2>&1 || skip "ruff not installed"
+  # F821: reference to an undefined name — syntactically valid, lint-caught.
+  printf 'def f():\n    return undefined_name\n' > "$TEST_DIR/lint.py"
+  run bash "$HOOK" <<< "$(payload "$TEST_DIR/lint.py")"
+  [ "$status" -eq 2 ]
+  [[ "$output" == *"RUFF"* ]]
+}
+
+# ---- Boundary --------------------------------------------------------
+
+@test "validate-python: a non-Python file is ignored (exit 0)" {
+  printf 'not python at all (((\n' > "$TEST_DIR/notes.txt"
+  run bash "$HOOK" <<< "$(payload "$TEST_DIR/notes.txt")"
+  [ "$status" -eq 0 ]
+}
+
+@test "validate-python: an extensionless file with a python shebang is validated" {
+  printf '#!/usr/bin/env python3\ndef f(:\n' > "$TEST_DIR/cli-tool"
+  run bash "$HOOK" <<< "$(payload "$TEST_DIR/cli-tool")"
+  [ "$status" -eq 2 ]
+}
+
+@test "validate-python: an extensionless non-python file is ignored (exit 0)" {
+  printf '#!/usr/bin/env bash\necho hi\n' > "$TEST_DIR/shell-tool"
+  run bash "$HOOK" <<< "$(payload "$TEST_DIR/shell-tool")"
+  [ "$status" -eq 0 ]
+}
+
+@test "validate-python: a dotted parent directory does not misfire the extension test" {
+  mkdir -p "$TEST_DIR/my.project"
+  printf '#!/usr/bin/env python3\ndef f(:\n' > "$TEST_DIR/my.project/cli-tool"
+  run bash "$HOOK" <<< "$(payload "$TEST_DIR/my.project/cli-tool")"
+  [ "$status" -eq 2 ]
+}
+
+@test "validate-python: empty file_path is a no-op (exit 0)" {
+  run bash "$HOOK" <<< '{"tool_input": {}}'
+  [ "$status" -eq 0 ]
+}
+
+@test "validate-python: a missing file is a no-op (exit 0)" {
+  run bash "$HOOK" <<< "$(payload "$TEST_DIR/does-not-exist.py")"
+  [ "$status" -eq 0 ]
+}
+
+@test "validate-python: an empty .py file passes (valid, compiles to nothing)" {
+  : > "$TEST_DIR/empty.py"
+  run bash "$HOOK" <<< "$(payload "$TEST_DIR/empty.py")"
+  [ "$status" -eq 0 ]
+}
+
+@test "validate-python: compiling leaves no __pycache__ beside the file" {
+  printf 'def f():\n    return 1\n' > "$TEST_DIR/clean.py"
+  run bash "$HOOK" <<< "$(payload "$TEST_DIR/clean.py")"
+  [ "$status" -eq 0 ]
+  [ ! -d "$TEST_DIR/__pycache__" ]
+}