Initial commit: hqt — HQ Terminal TUI

TUI for orchestrating AI coding harness sessions (Claude Code, Codex,
Kiro, etc.) via tmux. Click CLI bootstraps a Textual TUI over
ProjectService/SessionService backed by SQLite, spawning harness
sessions as tmux windows through TmuxManager.

Includes recent fixes:
- Visible Tab focus highlight on dialog OK/Cancel buttons
- Auto-select first project on launch
- Auto-select first session + per-project session-selection memory
- tmux new-window targets an explicit free index, fixing
  "index N in use" failures (broken spawn/attach in attached sessions)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tests/test_skills.py

@@ -0,0 +1,27 @@
+from pathlib import Path
+
+from hqt.skills.registry import SkillRegistry
+
+
+def test_discover_skills(tmp_path: Path):
+    skill_dir = tmp_path / "my-skill"
+    skill_dir.mkdir()
+    (skill_dir / "SKILL.md").write_text("---\nname: my-skill\ndescription: A test skill\n---\nSkill content here")
+
+    registry = SkillRegistry(tmp_path)
+    skills = registry.discover()
+
+    assert len(skills) == 1
+    assert skills[0].name == "my-skill"
+    assert skills[0].description == "A test skill"
+    assert skills[0].content == "Skill content here"
+
+
+def test_discover_empty_dir(tmp_path: Path):
+    registry = SkillRegistry(tmp_path)
+    assert registry.discover() == []
+
+
+def test_discover_nonexistent_dir(tmp_path: Path):
+    registry = SkillRegistry(tmp_path / "nope")
+    assert registry.discover() == []