fix(hooks): restore with proper SessionStart matchers

- Add matcher: startup|resume|compact for SessionStart (per docs)
- PreToolUse reads from stdin per documented hook input format
- Remove  arg, use stdin-based approach
- Scripts read event JSON from stdin as documented
- Plain text output, no special characters

hooks/hooks.json

@@ -1,23 +1,31 @@
 {
   "hooks": {
-    "SessionStart": [{
+    "SessionStart": [
-      "matcher": "startup|clear|compact",
+      {
-      "hooks": [{
+        "matcher": "startup|resume|compact",
-        "type": "command",
+        "hooks": [
-        "command": "\"${CLAUDE_PLUGIN_ROOT}/hooks/scripts/detect-project.sh\"",
+          {
-        "shell": "bash",
+            "type": "command",
-        "timeout": 10,
+            "command": "\"${CLAUDE_PLUGIN_ROOT}/hooks/scripts/detect-project.sh\"",
-        "async": false
+            "shell": "bash",
-      }]
+            "timeout": 10,
-    }],
+            "async": false
-    "PreToolUse": [{
+          }
-      "matcher": "Write|Edit",
+        ]
-      "hooks": [{
+      }
-        "type": "command",
+    ],
-        "command": "\"${CLAUDE_PLUGIN_ROOT}/hooks/scripts/detect-file-type.sh\" \"$TOOL_INPUT\"",
+    "PreToolUse": [
-        "shell": "bash",
+      {
-        "timeout": 10
+        "matcher": "Write|Edit",
-      }]
+        "hooks": [
-    }]
+          {
+            "type": "command",
+            "command": "\"${CLAUDE_PLUGIN_ROOT}/hooks/scripts/detect-file-type.sh\"",
+            "shell": "bash",
+            "timeout": 10
+          }
+        ]
+      }
+    ]
   }
 }

hooks/scripts/detect-file-type.sh

@@ -1,33 +1,18 @@
 #!/bin/bash
-# hub-guide: detect file extension from tool input and suggest language-specific rules
+# hub-guide: detect file extension and suggest language-specific rules
-# Runs before Write/Edit to inject best-practice context
+# Reads PreToolUse event JSON from stdin.
+set -euo pipefail
 
-TOOL_INPUT="$1"
+INPUT=$(cat)
-
+FILE_PATH=$(echo "$INPUT" | grep -o '"file_path"[[:space:]]*:[[:space:]]*"[^"]*"' | head -1 | sed 's/.*"file_path"[[:space:]]*:[[:space:]]*"\([^"]*\)".*/\1/')
-# Extract file path from tool input (looks for "file_path" in JSON)
-FILE_PATH=$(echo "$TOOL_INPUT" | grep -o '"file_path"[[:space:]]*:[[:space:]]*"[^"]*"' | head -1 | sed 's/.*"file_path"[[:space:]]*:[[:space:]]*"\([^"]*\)".*/\1/')
 EXT="${FILE_PATH##*.}"
 
 case "$EXT" in
-  ts|tsx)
+  ts|tsx)                        echo "[hub-guide] .${EXT} -> typescript" ;;
-    echo "[hub-guide] TypeScript file — apply typescript skill rules (strict types, no-any, proper generics)"
+  py)                            echo "[hub-guide] .py -> python" ;;
-    ;;
+  rs)                            echo "[hub-guide] .rs -> rust" ;;
-  py)
+  go)                            echo "[hub-guide] .go -> go" ;;
-    echo "[hub-guide] Python file — apply python skill rules (type hints, PEP 8, no wildcard imports)"
+  js|jsx)                        echo "[hub-guide] .${EXT} -> typescript" ;;
-    ;;
+  Dockerfile|dockerfile)         echo "[hub-guide] Dockerfile -> docker" ;;
-  rs)
+  yml|yaml)                      echo "[hub-guide] .${EXT} -> ci-cd+docker" ;;
-    echo "[hub-guide] Rust file — apply rust skill rules (ownership, error handling, clippy clean)"
-    ;;
-  go)
-    echo "[hub-guide] Go file — apply go skill rules (idiomatic Go, interfaces, error handling)"
-    ;;
-  js|jsx)
-    echo "[hub-guide] JavaScript file — apply typescript skill rules (ESM, modern JS)"
-    ;;
-  dockerfile|Dockerfile)
-    echo "[hub-guide] Dockerfile — apply docker skill rules (multi-stage, minimal layers, no root)"
-    ;;
-  yml|yaml)
-    echo "[hub-guide] YAML file — check ci-cd and docker skill rules"
-    ;;
 esac

hooks/scripts/detect-project.sh

@@ -9,7 +9,6 @@ SKILL_NAMES=""
 
 has_dep() { local n="$1"; grep -q "\"$n\"" package.json 2>/dev/null; }
 
-# --- project detection ---
 if [ -f "pnpm-workspace.yaml" ] || [ -f "lerna.json" ] || [ -f "nx.json" ] || [ -f "rush.json" ] || [ -f "turborepo.json" ]; then
   SKILL_NAMES="$SKILL_NAMES, monorepo"
 fi
@@ -41,11 +40,8 @@ fi
 MANDATORY="engineering-principles clean-code clean-architecture testing error-handling security git-workflow api-design"
 SKILL_NAMES="${SKILL_NAMES#, }"
 
-# --- output: plain text only, no emoji, no JSON ---
 echo "[hub-guide] session: ${PROJECT_DIR}"
 echo "[hub-guide] mandatory: ${MANDATORY}"
 if [ -n "$SKILL_NAMES" ]; then
   echo "[hub-guide] active: ${SKILL_NAMES}"
 fi
-echo ""
-echo "EXTREMELY_IMPORTANT: The hub-guide skills listed above are loaded and active. They apply to every code decision in this session. Never suppress lints. Never assume — show evidence. All skills work regardless of spoken language."