Update docs to use cex shorthand command

Replace all `commit-explorer` command references with `cex` in README.md and CLAUDE.md.

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

Author: locchh

CLAUDE.md

@@ -9,12 +9,12 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 uv sync
 
 # Run the application
-uv run commit-explorer [owner/repo] [--depth N] [--export]
+uv run cex [owner/repo] [--depth N] [--export]
 
 # Examples
-uv run commit-explorer                          # Interactive mode
-uv run commit-explorer torvalds/linux --depth 100
-uv run commit-explorer owner/repo --export     # Print graph to stdout
+uv run cex                          # Interactive mode
+uv run cex torvalds/linux --depth 100
+uv run cex owner/repo --export     # Print graph to stdout
 ```
 
 ## Architecture

README.md

@@ -19,36 +19,33 @@ A terminal UI for exploring git repository history. Clones repositories directly
 ## Quick Start
 
 ```bash
-uvx --from git+https://github.com/locchh/commit-explorer commit-explorer textualize/textual
+uvx --from git+https://github.com/locchh/commit-explorer cex textualize/textual
 ```
 
-
-
 Or clone and run locally:
 
 ```bash
 git clone https://github.com/locchh/commit-explorer
 cd commit-explorer
 uv sync
-uv run commit-explorer textualize/textual
+uv run cex textualize/textual
 ```
 
-Or:
-
+Or (bypass SSL for corporate proxies):
 
 ```bash
-GIT_SSL_NO_VERIFY=1 uvx --from git+https://github.com/locchh/commit-explorer commit-explorer textualize/textual
+GIT_SSL_NO_VERIFY=1 uvx --from git+https://github.com/locchh/commit-explorer cex textualize/textual
 ```
 
 
 
 ## Usage
 
 ```bash
-uv run commit-explorer                          # open the UI, enter repo manually
-uv run commit-explorer owner/repo               # pre-load a repository
-uv run commit-explorer owner/repo --depth 100   # limit to last 100 commits
-uv run commit-explorer owner/repo --export      # print graph to stdout and exit
+uv run cex                          # open the UI, enter repo manually
+uv run cex owner/repo               # pre-load a repository
+uv run cex owner/repo --depth 100   # limit to last 100 commits
+uv run cex owner/repo --export      # print graph to stdout and exit
 ```
 
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