Fix install: copy tui/ package and install Python deps

- Install script now copies tui/ directory to install location
- Installs textual and textual-serve via pip after file copy
- __main__.py uses GNIZA_DIR env var for correct path resolution

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

scripts/install.sh

@@ -132,6 +132,10 @@ cp -r "$SOURCE_DIR/bin"  "$INSTALL_DIR/"
 cp -r "$SOURCE_DIR/lib"  "$INSTALL_DIR/"
 cp -r "$SOURCE_DIR/etc"  "$INSTALL_DIR/"
 
+if [[ -d "$SOURCE_DIR/tui" ]]; then
+    cp -r "$SOURCE_DIR/tui" "$INSTALL_DIR/"
+fi
+
 if [[ -d "$SOURCE_DIR/scripts" ]]; then
     cp -r "$SOURCE_DIR/scripts" "$INSTALL_DIR/"
 fi
@@ -143,6 +147,21 @@ fi
 # Make entrypoint executable
 chmod +x "$INSTALL_DIR/bin/gniza"
 
+# ── Install Python TUI dependencies ─────────────────────────
+if command -v python3 &>/dev/null; then
+    info "Installing Python TUI dependencies (textual, textual-serve)..."
+    if python3 -m pip install --break-system-packages textual textual-serve 2>/dev/null; then
+        info "Python TUI dependencies installed."
+    elif python3 -m pip install textual textual-serve 2>/dev/null; then
+        info "Python TUI dependencies installed."
+    else
+        warn "Could not install Python TUI dependencies. TUI/web mode may not work."
+        warn "Install manually: pip3 install textual textual-serve"
+    fi
+else
+    warn "python3 not found. TUI mode will not be available."
+fi
+
 # ── Create symlink ───────────────────────────────────────────
 info "Creating symlink: $BIN_LINK -> $INSTALL_DIR/bin/gniza"
 mkdir -p "$(dirname "$BIN_LINK")"

tui/__main__.py

@@ -4,8 +4,8 @@ from pathlib import Path
 
 from tui.app import GnizaApp
 
-# Resolve project root (parent of tui/)
-_PROJECT_ROOT = str(Path(__file__).resolve().parent.parent)
+# Use GNIZA_DIR from env (set by bin/gniza), fall back to parent of tui/
+_ROOT = os.environ.get("GNIZA_DIR", str(Path(__file__).resolve().parent.parent))
 
 
 def main():
@@ -15,8 +15,8 @@ def main():
         for i, arg in enumerate(sys.argv):
             if arg == "--port" and i + 1 < len(sys.argv):
                 port = int(sys.argv[i + 1])
-        os.environ["PYTHONPATH"] = f"{_PROJECT_ROOT}:{os.environ.get('PYTHONPATH', '')}"
-        os.environ["GNIZA_DIR"] = _PROJECT_ROOT
+        os.environ["PYTHONPATH"] = f"{_ROOT}:{os.environ.get('PYTHONPATH', '')}"
+        os.environ["GNIZA_DIR"] = _ROOT
         server = Server("python3 -m tui", host="0.0.0.0", port=port, title="gniza")
         server.serve()
     else: