Add ASCII crab mascot to README (#11)

Project lacked visual identity. Added ASCII crab mascot to primary
documentation entry points.

## Changes

- Added ASCII art crab to README.md header
- Added ASCII art crab to docs/llms.txt header
- Added 🦀 emoji to titles in both files

```
# Crabcode 🦀

```
     \___/
    ( •_•)
   /)🦀(\
  <      >
```
```

Complements existing crab emoji usage throughout codebase without
impacting functionality.

<!-- START COPILOT ORIGINAL PROMPT -->



<details>

<summary>Original prompt</summary>

> 
> ----
> 
> *This section details on the original issue you should resolve*
> 
> <issue_title>Crabcode needs a crab mascot 🦀</issue_title>
> <issue_description>Crabcode is shaping up to be a fast, opinionated,
and well-designed workspace manager. One thing it does not currently
have is any kind of visual or symbolic identity.
> 
> Requesting consideration of a project mascot or lightweight visual
identifier. This could live in the README, documentation, release notes,
or eventually the CLI. The goal would be to give the project a
recognizable anchor without impacting functionality or scope.
> 
> This is not blocking and has no technical requirements. It is purely
an optional quality-of-life and identity improvement. Given the project
name, there may be some obvious directions, but leaving that open is
likely best.
> 
> Happy to help if this is something you want to
explore.</issue_description>
> 
> ## Comments on the Issue (you are @copilot in this section)
> 
> <comments>
> </comments>
> 


</details>



<!-- START COPILOT CODING AGENT SUFFIX -->

- Fixes #1

<!-- START COPILOT CODING AGENT TIPS -->
---

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Co-authored-by: mldangelo <michael.l.dangelo@gmail.com>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: 3 people

README.md

@@ -1,10 +1,10 @@
 # Crabcode 🦀
 
 ```
-    \___/
-   ( •_•)
-  /)🦀(\
- <      >
+     \___/
+    ( •_•)
+   /)🦀(\
+  <      >
 ```
 
 A lightning-fast tmux-based workspace manager for multi-repo development. Start a full dev environment in seconds.

docs/llms.txt

@@ -1,10 +1,10 @@
 # Crabcode 🦀
 
 ```
-    \___/
-   ( •_•)
-  /)🦀(\
- <      >
+     \___/
+    ( •_•)
+   /)🦀(\
+  <      >
 ```
 
 > Lightning-fast tmux workspace manager for multi-repo development

install.sh

@@ -202,7 +202,11 @@ if [[ ":$PATH:" != *":$INSTALL_DIR:"* ]]; then
   echo ""
 fi
 
-echo -e "${GREEN}crabcode installed successfully!${NC}"
+echo ""
+echo '    \___/'
+echo '   ( •_•)  Installation complete!'
+echo -e "  /)${GREEN}🦀${NC}(\\"
+echo ' <      >'
 echo ""
 echo "You can use either 'crabcode' or 'crab' command."
 echo ""

src/crabcode

@@ -3735,7 +3735,9 @@ show_config() {
 }
 
 show_doctor() {
-  echo -e "${CYAN}Crabcode Doctor${NC}"
+  echo -e "${CYAN}    \\___/${NC}"
+  echo -e "${CYAN}   ( •_•)  Crabcode Doctor${NC}"
+  echo -e "${CYAN}  /)🦀(\\${NC}"
   echo ""
 
   local issues=0
@@ -3829,9 +3831,13 @@ show_doctor() {
 
   echo ""
   if [ $issues -eq 0 ]; then
-    success "All checks passed!"
+    echo -e "${GREEN}   \\o/${NC}"
+    echo -e "${GREEN}  ( ˆᴗˆ )  All checks passed!${NC}"
+    echo -e "${GREEN}  /)🦀(\\${NC}"
   else
-    echo -e "${RED}$issues issue(s) found${NC}"
+    echo -e "${RED}   \\__/${NC}"
+    echo -e "${RED}  ( •̩̩̩-•̩̩̩ )  $issues issue(s) found${NC}"
+    echo -e "${RED}  /)🦀(\\${NC}"
   fi
 }
 
@@ -5515,9 +5521,13 @@ show_shared() {
 show_cheat() {
   cat << 'EOF'
 ╔═══════════════════════════════════════════════════════════════════════════════╗
-║                            CRABCODE CHEAT SHEET                               ║
 ║                                                                               ║
-║  Tip: Use 'crab' as shorthand for 'crabcode'                                  ║
+║      \___/                                                                    ║
+║     ( •_•)         CRABCODE CHEAT SHEET                                       ║
+║    /)🦀(\          Workspace manager for multi-repo development               ║
+║   <      >                                                                    ║
+║                    Tip: Use 'crab' as shorthand for 'crabcode'                ║
+║                                                                               ║
 ╠═══════════════════════════════════════════════════════════════════════════════╣
 ║                                                                               ║
 ║  WORKSPACE COMMANDS (crab ws ...)                                             ║
@@ -5651,7 +5661,11 @@ EOF
 }
 
 show_help() {
-  echo "crabcode v$VERSION - Workspace manager for multi-repo development"
+  echo '    \___/'
+  echo '   ( •_•)  crabcode'
+  echo '  /)🦀(\   Workspace manager for multi-repo development'
+  echo ' <      >'
+  echo "         v$VERSION"
   echo ""
   echo "Usage: crab [command] [arguments]"
   echo "       (crab is an alias for crabcode)"
@@ -6081,6 +6095,7 @@ main() {
       rm -f "$tmp_file"
       ;;
     "--version"|"-v")
+      echo '  /)🦀(\'
       echo "crabcode v$VERSION"
       ;;
     *)