docs: update README, install scripts for sessionStart.skill approach

README.md

@@ -16,11 +16,9 @@ A Claude Code plugin serving as a complete engineering guide for **all programmi
 
 Skills activate automatically when Claude detects relevant context (language, framework, topic).
 
-### Hooks for Auto-Activation
+### Auto-Loaded Skill
 
-| Hook | Trigger | What It Does |
-|------|---------|--------------|
-| **Stop** | Before stopping | Verifies mandatory skills are being applied (engineering-principles, clean-code, clean-architecture, testing, error-handling, security, git-workflow, api-design) |
+`engineering-principles` (29 principles) auto-loads at every session start — correctness, YAGNI, KISS, DRY, never assume, never suppress lints, show evidence, and more. This ensures foundational rules are always active.
 
 ## Installation
 
@@ -52,9 +50,9 @@ code-guide/
 ├── .claude-plugin/
 │   └── plugin.json           # Plugin manifest
 ├── hooks/
-│   └── hooks.json            # Hook configuration (Stop prompt)
+│   └── hooks.json            # Reserved for future use
 ├── skills/
-│   ├── clean-code/            # 23 more skill directories
+│   ├── clean-code/           # 24 skill directories
 │   └── ...
 └── README.md
 ```
@@ -66,4 +64,4 @@ Skills are in `skills/<name>/SKILL.md` format (modern Claude Code plugin convent
 - **Frontmatter** — `name` and `description` with trigger context
 - **Lean body** — key rules, examples, and anti-patterns
 
-The Stop hook injects reminders when mandatory skills aren't being applied.
+The `engineering-principles` skill auto-loads via plugin.json's `sessionStart.skill` field (same pattern as Superpowers' `using-superpowers`).

install.ps1

@@ -30,4 +30,4 @@ if ($Link) {
 
 Write-Host ""
 Write-Host "Done. Restart Claude Code or run /reload."
-Write-Host "Skills auto-trigger. Hooks auto-load from hooks/hooks.json."
+Write-Host "Skills auto-trigger. engineering-principles skill auto-loads at session start."

install.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 # install.sh — code-guide installer for Claude Code
 # Installs the entire code-guide directory as one unit into ~/.claude/skills/.
-# Skills auto-discover, hooks auto-load from hooks/hooks.json.
+# Skills auto-discover, engineering-principles auto-loads at session start.
 # Usage:
 #   ./install.sh              # Copy code-guide to ~/.claude/skills/
 #   ./install.sh --link       # Symlink (edits live)
@@ -41,4 +41,4 @@ if [ "$LINK_MODE" = true ]; then
 fi
 echo ""
 echo "Done. Restart Claude Code or run /reload."
-echo "Skills auto-trigger. Hooks auto-load from hooks/hooks.json."
+echo "Skills auto-trigger. engineering-principles skill auto-loads at session start."