fix(hooks): restore SessionStart + PreToolUse command hooks

Restore detect-project.sh, detect-file-type.sh, and hooks.json
from working version (80feaf2) with prompt-detection guidance lines.

hooks/hooks.json

@@ -1,9 +1,18 @@
 {
   "hooks": {
-    "Stop": [{
+    "SessionStart": [{
       "hooks": [{
-        "type": "prompt",
-        "prompt": "--- skill detect ---\nRead the user's prompt. Detect what language, framework, tool, or topic they are asking about. If it matches any hub-guide skill concept (see available skills), activate that skill's rules for your response.\n\nDetection is concept-based, not keyword-based — works regardless of what language the user speaks.\n---"
+        "type": "command",
+        "command": "bash \"$CLAUDE_PLUGIN_ROOT/hooks/scripts/detect-project.sh\"",
+        "timeout": 10
+      }]
+    }],
+    "PreToolUse": [{
+      "matcher": "Write|Edit",
+      "hooks": [{
+        "type": "command",
+        "command": "bash \"$CLAUDE_PLUGIN_ROOT/hooks/scripts/detect-file-type.sh\" \"$TOOL_INPUT\"",
+        "timeout": 10
       }]
     }]
   }