feat(dream): add reflection skill and 12h reminder

Replay the last 24h of a repository — git log and reflog, CI, reviews,
memory, session transcripts — score every action as held, broke or unknown
against its evidence, harden the resulting hypotheses with dialectic, and
persist what survives. The objective is a measurably more confident next
run: a class of error counts as closed only once a test, check, hook or
written rule prevents it.

Derived improvements to the code and to the agent instructions are offered
as single-select questions, and the run ends in autotune and autoskill.

The reminder hook stamps into each repository's git dir, so every repo
carries its own twelve-hour cadence and the hook stays silent outside a
git repository.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

tests/test_dream.py

@@ -0,0 +1,102 @@
+"""Validate the dream reminder hook and its settings registration."""
+
+from __future__ import annotations
+
+import json
+import shutil
+import subprocess
+import tempfile
+import unittest
+from pathlib import Path
+
+REPO_ROOT = Path(__file__).resolve().parents[1]
+SKILL = REPO_ROOT / "skills" / "dream" / "SKILL.md"
+HOOK = REPO_ROOT / "skills" / "dream" / "hooks" / "reminder.sh"
+PATCHER = REPO_ROOT / "scripts" / "enable-plugins.js"
+
+
+def _run_hook(cwd: Path, stamp: Path | None = None, interval: str = "43200") -> subprocess.CompletedProcess:
+    env = {
+        "PATH": "/usr/bin:/bin",
+        "HOME": str(cwd),
+        "DREAM_INTERVAL_SECONDS": interval,
+    }
+    if stamp is not None:
+        env["DREAM_STAMP"] = str(stamp)
+    return subprocess.run(
+        ["bash", str(HOOK)],
+        capture_output=True,
+        text=True,
+        check=True,
+        cwd=str(cwd),
+        env=env,
+    )
+
+
+class TestDreamSkill(unittest.TestCase):
+    def test_skill_is_trigger_only(self):
+        text = SKILL.read_text(encoding="utf-8")
+        self.assertIn("name: dream", text)
+        self.assertIn("multiSelect: false", text)
+
+
+class TestDreamHook(unittest.TestCase):
+    def setUp(self):
+        self.tmp = tempfile.TemporaryDirectory()
+        self.addCleanup(self.tmp.cleanup)
+        self.cwd = Path(self.tmp.name)
+        self.stamp = self.cwd / ".claude" / ".dream-stamp"
+
+    def test_first_run_hints_and_stamps(self):
+        result = _run_hook(self.cwd, self.stamp)
+        self.assertIn("/dream", result.stdout)
+        self.assertTrue(self.stamp.is_file())
+
+    def test_second_run_is_silent_within_interval(self):
+        _run_hook(self.cwd, self.stamp)
+        self.assertEqual(_run_hook(self.cwd, self.stamp).stdout, "")
+
+    def test_hint_returns_after_the_interval(self):
+        _run_hook(self.cwd, self.stamp)
+        self.assertIn("/dream", _run_hook(self.cwd, self.stamp, interval="0").stdout)
+
+    def test_corrupt_stamp_does_not_crash(self):
+        self.stamp.parent.mkdir(parents=True, exist_ok=True)
+        self.stamp.write_text("not-a-timestamp\n", encoding="utf-8")
+        self.assertIn("/dream", _run_hook(self.cwd, self.stamp).stdout)
+
+    def test_outside_a_repository_it_stays_silent(self):
+        self.assertEqual(_run_hook(self.cwd).stdout, "")
+
+    @unittest.skipUnless(shutil.which("git"), "git not installed")
+    def test_stamp_is_per_repository(self):
+        for name in ("one", "two"):
+            repo = self.cwd / name
+            repo.mkdir()
+            subprocess.run(["git", "init", "-q", str(repo)], check=True, capture_output=True)
+            self.assertIn("/dream", _run_hook(repo).stdout)
+            self.assertTrue((repo / ".git" / ".dream-stamp").is_file())
+            self.assertEqual(_run_hook(repo).stdout, "")
+
+
+@unittest.skipUnless(shutil.which("node"), "node not installed")
+class TestSettingsRegistration(unittest.TestCase):
+    def setUp(self):
+        self.tmp = tempfile.TemporaryDirectory()
+        self.addCleanup(self.tmp.cleanup)
+        self.settings = Path(self.tmp.name) / "settings.json"
+
+    def _patch(self) -> dict:
+        subprocess.run(["node", str(PATCHER), str(self.settings)], check=True, capture_output=True)
+        return json.loads(self.settings.read_text(encoding="utf-8"))
+
+    def test_hook_registered_once(self):
+        self._patch()
+        data = self._patch()
+        entries = json.dumps(data["hooks"]["UserPromptSubmit"])
+        self.assertEqual(entries.count("dream/hooks/reminder.sh"), 1)
+        self.assertEqual(entries.count("autotune/hooks/reminder.sh"), 1)
+
+
+if __name__ == "__main__":
+    unittest.main()