fix: apply ruff auto-fixes and add hk git hooks

- Fix pre-existing lint errors in engine/ modules using ruff --unsafe-fixes
- Add hk.pkl with pre-commit and pre-push hooks using ruff builtin
- Configure hooks to use 'uv run' prefix for tool execution
- Update mise.toml to include hk and pkl tools
- All 73 tests pass

fix: apply ruff auto-fixes and add hk git hooks

- Fix pre-existing lint errors in engine/ modules using ruff --unsafe-fixes
- Add hk.pkl with pre-commit and pre-push hooks using ruff builtin
- Configure hooks to use 'uv run' prefix for tool execution
- Update mise.toml to include hk and pkl tools
- Use 'hk install --mise' for proper mise integration
- All 73 tests pass

engine/app.py

@@ -39,6 +39,7 @@ TITLE = [
     "  ╚═╝     ╚═╝╚═╝  ╚═╝╚═╝╚═╝  ╚═══╝╚══════╝╚═╝╚═╝  ╚═══╝╚══════╝",
 ]
 
+
 def _read_picker_key():
     ch = sys.stdin.read(1)
     if ch == "\x03":
@@ -63,6 +64,7 @@ def _read_picker_key():
         return "enter"
     return None
 
+
 def _normalize_preview_rows(rows):
     """Trim shared left padding and trailing spaces for stable on-screen previews."""
     non_empty = [r for r in rows if r.strip()]
@@ -109,7 +111,9 @@ def _draw_font_picker(faces, selected):
         active = pos == selected
         pointer = "▶" if active else " "
         color = G_HI if active else W_DIM
-        print(f"  {color}{pointer} {face['name']}{RST}{W_GHOST} · {face['file_name']}{RST}")
+        print(
+            f"  {color}{pointer} {face['name']}{RST}{W_GHOST} · {face['file_name']}{RST}"
+        )
 
     if top > 0:
         print(f"  {W_GHOST}… {top} above{RST}")
@@ -126,6 +130,7 @@ def _draw_font_picker(faces, selected):
         shown = row[:max_preview_w]
         print(f"    {shown}")
 
+
 def pick_font_face():
     """Interactive startup picker for selecting a face from repo OTF files."""
     if not config.FONT_PICKER:
@@ -235,7 +240,9 @@ def pick_font_face():
         font_index=selected_font["font_index"],
     )
     render.clear_font_cache()
-    print(f"  {G_DIM}> using {selected_font['name']} ({selected_font['file_name']}){RST}")
+    print(
+        f"  {G_DIM}> using {selected_font['name']} ({selected_font['file_name']}){RST}"
+    )
     time.sleep(0.8)
     print(CLR, end="")
     print(CURSOR_OFF, end="")
@@ -265,23 +272,29 @@ def main():
         time.sleep(0.07)
 
     print()
-    _subtitle = "literary consciousness stream" if config.MODE == 'poetry' else "digital consciousness stream"
+    _subtitle = (
+        "literary consciousness stream"
+        if config.MODE == "poetry"
+        else "digital consciousness stream"
+    )
     print(f"  {W_DIM}v0.1 · {_subtitle}{RST}")
     print(f"  {W_GHOST}{'─' * (w - 4)}{RST}")
     print()
     time.sleep(0.4)
 
-    cached = load_cache() if '--refresh' not in sys.argv else None
+    cached = load_cache() if "--refresh" not in sys.argv else None
     if cached:
         items = cached
         boot_ln("Cache", f"LOADED [{len(items)} SIGNALS]", True)
-    elif config.MODE == 'poetry':
+    elif config.MODE == "poetry":
         slow_print("  > INITIALIZING LITERARY CORPUS...\n")
         time.sleep(0.2)
         print()
         items, linked, failed = fetch_poetry()
         print()
-        print(f"  {G_DIM}>{RST} {G_MID}{linked} TEXTS LOADED{RST} {W_GHOST}· {failed} DARK{RST}")
+        print(
+            f"  {G_DIM}>{RST} {G_MID}{linked} TEXTS LOADED{RST} {W_GHOST}· {failed} DARK{RST}"
+        )
         print(f"  {G_DIM}>{RST} {G_MID}{len(items)} STANZAS ACQUIRED{RST}")
         save_cache(items)
     else:
@@ -290,7 +303,9 @@ def main():
         print()
         items, linked, failed = fetch_all()
         print()
-        print(f"  {G_DIM}>{RST} {G_MID}{linked} SOURCES LINKED{RST} {W_GHOST}· {failed} DARK{RST}")
+        print(
+            f"  {G_DIM}>{RST} {G_MID}{linked} SOURCES LINKED{RST} {W_GHOST}· {failed} DARK{RST}"
+        )
         print(f"  {G_DIM}>{RST} {G_MID}{len(items)} SIGNALS ACQUIRED{RST}")
         save_cache(items)
 
@@ -302,7 +317,13 @@ def main():
     mic = MicMonitor(threshold_db=config.MIC_THRESHOLD_DB)
     mic_ok = mic.start()
     if mic.available:
-        boot_ln("Microphone", "ACTIVE" if mic_ok else "OFFLINE · check System Settings → Privacy → Microphone", bool(mic_ok))
+        boot_ln(
+            "Microphone",
+            "ACTIVE"
+            if mic_ok
+            else "OFFLINE · check System Settings → Privacy → Microphone",
+            bool(mic_ok),
+        )
 
     ntfy = NtfyPoller(
         config.NTFY_TOPIC,