diff --git a/.ccs.example.json b/.ccs.example.json
index 547e7f40..a72ad40b 100644
--- a/.ccs.example.json
+++ b/.ccs.example.json
@@ -2,7 +2,6 @@
   "profiles": {
     "glm": "~/.claude/glm.settings.json",
     "sonnet": "~/.claude/sonnet.settings.json",
-    "opus": "~/.claude/opus.settings.json",
     "default": "~/.claude/settings.json"
   }
 }
diff --git a/README.md b/README.md
index fd957d35..6d6a24c6 100644
--- a/README.md
+++ b/README.md
@@ -1,80 +1,168 @@
 # CCS - Claude Code Switch
 
-Ultra-simple wrapper for `claude --settings`. Switch between Claude profiles with friendly aliases.
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+[![Bash](https://img.shields.io/badge/bash-3.2%2B-blue.svg)](https://www.gnu.org/software/bash/)
+[![GitHub Stars](https://img.shields.io/github/stars/kaitranntt/ccs.svg)](https://github.com/kaitranntt/ccs/stargazers)
 
-## Why?
+> Ultra-simple Claude CLI profile switcher. One command instead of long paths.
 
-Claude CLI supports `--settings` flag but it's verbose:
+**Before**: `claude --settings ~/.claude/glm.settings.json --verbose`
+**After**: `ccs glm --verbose`
 
+## Quick Start
+
+**Install** (one-liner):
 ```bash
-claude --settings ~/.claude/glm.settings.json
-claude --settings ~/.claude/sonnet.settings.json --verbose
+curl -fsSL https://raw.githubusercontent.com/kaitranntt/ccs/main/install.sh | bash
 ```
 
-CCS makes it friendly:
-
+**Configure**:
 ```bash
-ccs glm
-ccs sonnet --verbose
+# Edit with your profiles
+cat > ~/.ccs.json << 'EOF'
+{
+  "profiles": {
+    "glm": "~/.claude/glm.settings.json",
+    "sonnet": "~/.claude/sonnet.settings.json",
+    "default": "~/.claude/settings.json"
+  }
+}
+EOF
 ```
 
+**Use**:
+```bash
+ccs          # Use default profile
+ccs glm      # Use GLM profile
+ccs sonnet   # Use Sonnet profile
+```
+
+## Why CCS?
+
+Claude CLI's `--settings` flag is powerful but verbose. CCS gives you friendly aliases.
+
+**Features**:
+- Single command profile switching
+- Pass-through all Claude CLI args
+- Zero configuration complexity
+- No proxies, no magic—just bash + jq
+
 ## Installation
 
+### One-Liner (Recommended)
+
+```bash
+curl -fsSL https://raw.githubusercontent.com/kaitranntt/ccs/main/install.sh | bash
+```
+
+### Git Clone
+
 ```bash
 git clone https://github.com/kaitranntt/ccs.git
 cd ccs
 ./install.sh
 ```
 
-Or as a one-liner:
+### Manual
 
 ```bash
-git clone https://github.com/kaitranntt/ccs.git && cd ccs && ./install.sh
+# Download script
+curl -fsSL https://raw.githubusercontent.com/kaitranntt/ccs/main/ccs -o ~/.local/bin/ccs
+chmod +x ~/.local/bin/ccs
+
+# Ensure ~/.local/bin in PATH
+export PATH="$HOME/.local/bin:$PATH"
 ```
 
 ## Configuration
 
-Copy example config:
-
-```bash
-cp .ccs.example.json ~/.ccs.json
-```
-
-Edit `~/.ccs.json` with your profiles:
+Create `~/.ccs.json` with profile mappings:
 
 ```json
 {
   "profiles": {
     "glm": "~/.claude/glm.settings.json",
-    "sonnet": "~/.claude/sonnet.settings.json"
+    "sonnet": "~/.claude/sonnet.settings.json",
+    "default": "~/.claude/settings.json"
   }
 }
 ```
 
+Each profile points to a Claude settings JSON file. Create settings files per [Claude CLI docs](https://docs.claude.com/en/docs/claude-code/installation).
+
 ## Usage
 
 ### Basic
 
 ```bash
-ccs glm                  # Use GLM profile
-ccs sonnet               # Use Sonnet profile
+ccs           # Use default profile (no args)
+ccs glm       # Use GLM profile
+ccs sonnet    # Use Sonnet profile
 ```
 
-### Pass Arguments Transparently
+### With Arguments
 
-All arguments after the profile name are passed directly to Claude:
+All args after profile name pass directly to Claude CLI:
 
 ```bash
 ccs glm --verbose
 ccs sonnet /plan "add feature"
-ccs opus --model claude-opus-4
+ccs default --model claude-sonnet-4
 ```
 
+### Custom Config Location
+
+```bash
+export CCS_CONFIG=~/my-custom-ccs.json
+ccs glm
+```
+
+## Use Cases
+
+### Claude Subscription + GLM Coding Plan
+
+Switch between Claude sub and GLM plan:
+
+```json
+{
+  "profiles": {
+    "claude": "~/.claude/claude-sub.settings.json",
+    "glm": "~/.claude/glm.settings.json",
+    "default": "~/.claude/settings.json"
+  }
+}
+```
+
+```bash
+ccs claude   # Use Claude subscription
+ccs glm      # Use GLM coding plan
+```
+
+### Different Models
+
+```json
+{
+  "profiles": {
+    "sonnet": "~/.claude/sonnet.settings.json",
+    "haiku": "~/.claude/haiku.settings.json",
+    "default": "~/.claude/settings.json"
+  }
+}
+```
+
+## How It Works
+
+1. Reads profile name (defaults to "default" if omitted)
+2. Looks up settings file path in `~/.ccs.json`
+3. Executes `claude --settings <path> [remaining-args]`
+
+No magic. No file modification. Pure delegation.
+
 ## Requirements
 
-- `bash` (3.2+ compatible)
+- `bash` 3.2+
 - `jq` (JSON processor)
-- [Claude CLI](https://docs.claude.com/en/docs/claude-code/installation) installed
+- [Claude CLI](https://docs.claude.com/en/docs/claude-code/installation)
 
 ### Installing jq
 
@@ -87,95 +175,67 @@ sudo apt install jq
 
 # Fedora
 sudo dnf install jq
+
+# Arch
+sudo pacman -S jq
 ```
 
-## How It Works
-
-1. Reads profile name from first argument
-2. Looks up settings file path in `~/.ccs.json`
-3. Executes `claude --settings <path> [remaining-args]`
-
-That's it. No magic, no proxies, no file modification.
-
 ## Troubleshooting
 
 ### Profile not found
 
-```bash
+```
 Error: Profile 'foo' not found in ~/.ccs.json
 ```
 
-**Solution**: Add the profile to your `~/.ccs.json` config file.
+**Fix**: Add profile to `~/.ccs.json`:
+```json
+{
+  "profiles": {
+    "foo": "~/.claude/foo.settings.json"
+  }
+}
+```
 
 ### Settings file missing
 
-```bash
+```
 Error: Settings file not found: ~/.claude/foo.settings.json
 ```
 
-**Solution**: Create the settings file or update the path in your config.
+**Fix**: Create settings file or fix path in config.
 
 ### jq not installed
 
-```bash
+```
 Error: jq is required but not installed
 ```
 
-**Solution**: Install jq using your package manager (see Requirements section).
+**Fix**: Install jq (see Requirements).
 
 ### PATH not set
 
-```bash
+```
 ⚠️  Warning: ~/.local/bin is not in PATH
 ```
 
-**Solution**: Add to your shell profile (`~/.bashrc` or `~/.zshrc`):
-
+**Fix**: Add to `~/.bashrc` or `~/.zshrc`:
 ```bash
 export PATH="$HOME/.local/bin:$PATH"
 ```
+Then `source ~/.bashrc` or restart shell.
 
-Then restart your shell or run `source ~/.bashrc` (or `~/.zshrc`).
+### Default profile missing
 
-## Use Cases
-
-### Claude Subscription + GLM Coding Plan
-
-If you have both Claude subscription and GLM coding plan:
+```
+Error: Profile 'default' not found in ~/.ccs.json
+```
 
+**Fix**: Add "default" profile or always specify profile name:
 ```json
 {
   "profiles": {
-    "claude": "~/.claude/sonnet.settings.json",
-    "glm": "~/.claude/glm.settings.json"
-  }
-}
-```
-
-```bash
-ccs claude           # Use Claude subscription
-ccs glm              # Use GLM coding plan
-```
-
-### Multiple Anthropic Accounts
-
-```json
-{
-  "profiles": {
-    "work": "~/.claude/work.settings.json",
-    "personal": "~/.claude/personal.settings.json"
-  }
-}
-```
-
-### Different Models
-
-```json
-{
-  "profiles": {
-    "sonnet": "~/.claude/sonnet.settings.json",
-    "opus": "~/.claude/opus.settings.json",
-    "haiku": "~/.claude/haiku.settings.json"
+    "default": "~/.claude/settings.json"
   }
 }
 ```
@@ -183,22 +243,40 @@ ccs glm              # Use GLM coding plan
 ## Uninstallation
 
 ```bash
-rm ~/.local/bin/ccs
-rm ~/.ccs.json
+ccs-uninstall
 ```
 
-## License
-
-MIT
+Or manual:
+```bash
+rm ~/.local/bin/ccs
+rm ~/.local/bin/ccs-uninstall
+rm ~/.ccs.json  # If you want to remove config
+```
 
 ## Contributing
 
 PRs welcome! Keep it simple (KISS principle).
 
+**Guidelines**:
+- Maintain bash 3.2+ compatibility
+- No dependencies beyond jq
+- Test on macOS and Linux
+- Follow existing code style
+
 ## Philosophy
 
-**YAGNI**: We don't add features "just in case"
-**KISS**: Simple bash script, no complexity
-**DRY**: One source of truth (config file)
+- **YAGNI**: No features "just in case"
+- **KISS**: Simple bash, no complexity
+- **DRY**: One source of truth (config)
 
-This tool does ONE thing well: map profile names to settings files. Nothing more.
+This tool does ONE thing well: map profile names to settings files.
+
+## License
+
+MIT © [Kai Tran](https://github.com/kaitranntt)
+
+## Links
+
+- [Claude CLI Docs](https://docs.claude.com/en/docs/claude-code/installation)
+- [Report Issues](https://github.com/kaitranntt/ccs/issues)
+- [Changelog](https://github.com/kaitranntt/ccs/releases)
diff --git a/ccs b/ccs
index d2f0e68e..64848072 100755
--- a/ccs
+++ b/ccs
@@ -2,16 +2,7 @@
 set -euo pipefail
 
 CONFIG_FILE="${CCS_CONFIG:-$HOME/.ccs.json}"
-PROFILE="${1:-}"
-
-# Validate usage
-if [[ -z "$PROFILE" ]]; then
-  echo "Usage: ccs <profile> [claude-args...]"
-  echo "Example: ccs glm --verbose"
-  echo ""
-  echo "Available profiles are defined in: $CONFIG_FILE"
-  exit 1
-fi
+PROFILE="${1:-default}"
 
 # Check config exists
 if [[ ! -f "$CONFIG_FILE" ]]; then
diff --git a/install.sh b/install.sh
index a44a8bc5..4d423300 100755
--- a/install.sh
+++ b/install.sh
@@ -3,12 +3,21 @@ set -euo pipefail
 
 INSTALL_DIR="${INSTALL_DIR:-$HOME/.local/bin}"
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+SHARE_DIR="$HOME/.local/share/ccs"
+
+# Determine if running from git clone or curl
+if [[ -d "$SCRIPT_DIR/.git" ]]; then
+  INSTALL_METHOD="git"
+else
+  INSTALL_METHOD="standalone"
+fi
 
 echo "Installing ccs to $INSTALL_DIR..."
 echo ""
 
 # Create install dir if needed
 mkdir -p "$INSTALL_DIR"
+mkdir -p "$SHARE_DIR"
 
 # Make executable first
 chmod +x "$SCRIPT_DIR/ccs"
@@ -23,6 +32,23 @@ if [[ ! -L "$INSTALL_DIR/ccs" ]]; then
   exit 1
 fi
 
+# Install uninstall script
+if [[ -f "$SCRIPT_DIR/uninstall.sh" ]]; then
+  cp "$SCRIPT_DIR/uninstall.sh" "$SHARE_DIR/uninstall.sh"
+  chmod +x "$SHARE_DIR/uninstall.sh"
+  ln -sf "$SHARE_DIR/uninstall.sh" "$INSTALL_DIR/ccs-uninstall"
+elif [[ "$INSTALL_METHOD" == "standalone" ]]; then
+  # Fetch uninstall script for curl installs
+  echo "Fetching uninstall script..."
+  if command -v curl &> /dev/null; then
+    curl -fsSL https://raw.githubusercontent.com/kaitranntt/ccs/main/uninstall.sh -o "$SHARE_DIR/uninstall.sh"
+    chmod +x "$SHARE_DIR/uninstall.sh"
+    ln -sf "$SHARE_DIR/uninstall.sh" "$INSTALL_DIR/ccs-uninstall"
+  else
+    echo "⚠️  Warning: curl not found, skipping uninstall script"
+  fi
+fi
+
 # Check if in PATH
 if [[ ":$PATH:" != *":$INSTALL_DIR:"* ]]; then
   echo "⚠️  Warning: $INSTALL_DIR is not in PATH"
@@ -35,10 +61,29 @@ fi
 echo "✅ Installation complete!"
 echo ""
 echo "Next steps:"
-echo "1. Copy example config: cp $SCRIPT_DIR/.ccs.example.json ~/.ccs.json"
-echo "2. Edit ~/.ccs.json with your profile mappings"
-echo "3. Run: ccs <profile>"
+if [[ ! -f "$HOME/.ccs.json" ]]; then
+  if [[ -f "$SCRIPT_DIR/.ccs.example.json" ]]; then
+    echo "1. Copy example config: cp $SCRIPT_DIR/.ccs.example.json ~/.ccs.json"
+  else
+    echo "1. Create config at ~/.ccs.json:"
+    echo "   {"
+    echo "     \"profiles\": {"
+    echo "       \"glm\": \"~/.claude/glm.settings.json\","
+    echo "       \"sonnet\": \"~/.claude/sonnet.settings.json\","
+    echo "       \"default\": \"~/.claude/settings.json\""
+    echo "     }"
+    echo "   }"
+  fi
+  echo "2. Edit ~/.ccs.json with your profile mappings"
+  echo "3. Run: ccs [profile]"
+else
+  echo "1. Config already exists at ~/.ccs.json"
+  echo "2. Run: ccs [profile]"
+fi
 echo ""
 echo "Example:"
-echo "  ccs glm"
+echo "  ccs           # Uses default profile"
+echo "  ccs glm       # Uses glm profile"
 echo "  ccs sonnet --verbose"
+echo ""
+echo "To uninstall: ccs-uninstall"
diff --git a/uninstall.sh b/uninstall.sh
new file mode 100755
index 00000000..0d614fba
--- /dev/null
+++ b/uninstall.sh
@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+echo "Uninstalling ccs..."
+echo ""
+
+# Remove symlink
+if [[ -L "$HOME/.local/bin/ccs" ]]; then
+  rm "$HOME/.local/bin/ccs"
+  echo "✅ Removed: $HOME/.local/bin/ccs"
+elif [[ -f "$HOME/.local/bin/ccs" ]]; then
+  rm "$HOME/.local/bin/ccs"
+  echo "✅ Removed: $HOME/.local/bin/ccs"
+else
+  echo "ℹ️  No ccs binary found at $HOME/.local/bin/ccs"
+fi
+
+# Remove uninstall symlink
+if [[ -L "$HOME/.local/bin/ccs-uninstall" ]]; then
+  rm "$HOME/.local/bin/ccs-uninstall"
+  echo "✅ Removed: $HOME/.local/bin/ccs-uninstall"
+fi
+
+# Remove share directory
+if [[ -d "$HOME/.local/share/ccs" ]]; then
+  rm -rf "$HOME/.local/share/ccs"
+  echo "✅ Removed: $HOME/.local/share/ccs"
+fi
+
+# Ask about config
+if [[ -f "$HOME/.ccs.json" ]]; then
+  read -p "Remove config file ~/.ccs.json? (y/N) " -n 1 -r
+  echo
+  if [[ $REPLY =~ ^[Yy]$ ]]; then
+    rm "$HOME/.ccs.json"
+    echo "✅ Removed: $HOME/.ccs.json"
+  else
+    echo "ℹ️  Kept: $HOME/.ccs.json"
+  fi
+else
+  echo "ℹ️  No config file found at $HOME/.ccs.json"
+fi
+
+echo ""
+echo "✅ Uninstall complete!"