Add Zsh plugin installation documentation and rename config variables

The Zsh plugin now includes a how_to_install.md file with setup
instructions. Configuration variable names have been simplified from
JVCS_PROMPT_SEGMENT_* to JVCS_* for consistency.

2 files changed, 71 insertions, 16 deletions

diff --git a/scripts/zsh_support/how_to_install.md b/scripts/zsh_support/how_to_install.md
new file mode 100644
index 0000000..343ea7b
--- /dev/null
+++ b/scripts/zsh_support/how_to_install.md
@@ -0,0 +1,61 @@
+# How to Install
+
+Before installing, please ensure:
+
+* [Oh My Zsh](https://ohmyz.sh/) is installed.
+* Your current shell is **Zsh**.
+
+---
+
+## Install the Zsh Plugin
+
+In your terminal, run:
+
+```bash
+./install.sh
+```
+
+This script will install JVCS's Zsh support files locally and prepare the prompt segment definitions for use by your theme.
+
+---
+
+## Configure Your Zsh Theme
+
+Open your current Zsh theme file (e.g., `~/.oh-my-zsh/themes/xxx.zsh-theme`) and paste the following content in an appropriate location:
+
+```bash
+# ----------------------------------------------------- #
+# DISPLAY_LEVEL
+# FULL   = 127.0.0.1:25331/account/sheet
+# NORMAL =                 account/sheet
+# SHORT  =                         sheet
+JVCS_VIEW='NORMAL'
+
+# Customizable prompt segment elements
+JVCS_PREFIX='['
+JVCS_SPLIT='/'
+JVCS_SUFFIX=']'
+
+# JVCS_PROMPT_SEGMENT default style:
+# [your_account/your_sheet]
+
+# Append JVCS prompt segment
+PROMPT+='${JVCS_PROMPT_SEGMENT}'
+# ----------------------------------------------------- #
+```
+
+After saving, reload your terminal, or run:
+
+```bash
+source ~/.zshrc
+```
+
+---
+
+## Notes
+
+* `JVCS_VIEW` controls the view level displayed in the prompt.
+* `JVCS_PREFIX / SPLIT / SUFFIX` are used to customize the appearance.
+* `JVCS_PROMPT_SEGMENT` is only responsible for displaying the status and does not execute any logic.
+
+No further configuration is required.
diff --git a/scripts/zsh_support/jvcs.plugin.zsh b/scripts/zsh_support/jvcs.plugin.zsh
index 6f9d349..2032044 100644
--- a/scripts/zsh_support/jvcs.plugin.zsh
+++ b/scripts/zsh_support/jvcs.plugin.zsh
@@ -17,20 +17,14 @@
 
 autoload -Uz add-zsh-hook
 
-#####################
-### CONFIGURATION ###
-#####################
-
-# DISPLAY_LEVEL
-# FULL   = 127.0.0.1:25331/account/sheet
-# NORMAL =                 account/sheet
-# SHORT  =                         sheet
-JVCS_VIEW='NORMAL'
+##################
+### APPEARANCE ###
+##################
 
-# Customizable prompt segment elements
-JVCS_PROMPT_SEGMENT_SPLIT='/'
-JVCS_PROMPT_SEGMENT_PREFIX=''
-JVCS_PROMPT_SEGMENT_SUFFIX='>'
+JVCS_VIEW='NORMAL'
+JVCS_PREFIX='['
+JVCS_SPLIT='/'
+JVCS_SUFFIX=']'
 
 ###################
 ### THEME READS ###
@@ -81,13 +75,13 @@ jvcs_render_prompt() {
   if [[ -n "$JVCS_DISPLAY" ]]; then
     case "$JVCS_VIEW" in
       FULL)
-        JVCS_PROMPT_SEGMENT="%{$fg[white]%}${JVCS_PROMPT_SEGMENT_PREFIX}${JVCS_UPSTREAM}${JVCS_PROMPT_SEGMENT_SPLIT}${JVCS_ACCOUNT}${JVCS_PROMPT_SEGMENT_SPLIT}${JVCS_SHEET}${JVCS_PROMPT_SEGMENT_SUFFIX} %{$reset_color%}"
+        JVCS_PROMPT_SEGMENT="%{$fg[white]%}${JVCS_PREFIX}${JVCS_UPSTREAM}${JVCS_SPLIT}${JVCS_ACCOUNT}${JVCS_SPLIT}${JVCS_SHEET}${JVCS_SUFFIX} %{$reset_color%}"
         ;;
       NORMAL)
-        JVCS_PROMPT_SEGMENT="%{$fg[white]%}${JVCS_PROMPT_SEGMENT_PREFIX}${JVCS_ACCOUNT}${JVCS_PROMPT_SEGMENT_SPLIT}${JVCS_SHEET}${JVCS_PROMPT_SEGMENT_SUFFIX} %{$reset_color%}"
+        JVCS_PROMPT_SEGMENT="%{$fg[white]%}${JVCS_PREFIX}${JVCS_ACCOUNT}${JVCS_SPLIT}${JVCS_SHEET}${JVCS_SUFFIX} %{$reset_color%}"
         ;;
       SHORT)
-        JVCS_PROMPT_SEGMENT="%{$fg[white]%}${JVCS_PROMPT_SEGMENT_PREFIX}${JVCS_SHEET}${JVCS_PROMPT_SEGMENT_SUFFIX} %{$reset_color%}"
+        JVCS_PROMPT_SEGMENT="%{$fg[white]%}${JVCS_PREFIX}${JVCS_SHEET}${JVCS_SUFFIX} %{$reset_color%}"
         ;;
       *)
         JVCS_PROMPT_SEGMENT=''