Fix lint hook: output additionalContext JSON so Claude sees errors in-context

Replaced the old inline command (which just printed raw text and exited
non-zero) with a small script at .claude/hooks/lint-on-edit.sh. When
oxlint finds errors, the script outputs JSON with hookSpecificOutput
.additionalContext, which explicitly injects the lint errors into
Claude's context so it fixes them immediately rather than missing a
background notification.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.claude/hooks/lint-on-edit.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+# Run oxlint on the edited file and inject errors back into Claude's context.
+# Reads the PostToolUse JSON payload from stdin.
+# Exits 0 silently on pass or non-TS file; outputs JSON additionalContext on failure.
+
+set -euo pipefail
+
+FILE=$(python3 -c "
+import sys, json
+d = json.load(sys.stdin)
+print(d.get('tool_input', {}).get('file_path', ''))
+")
+
+# Only lint TypeScript files
+case "$FILE" in
+  *.ts|*.tsx) ;;
+  *) exit 0 ;;
+esac
+
+cd /home/chris/Projects/brackt.com
+
+OUTPUT=$(npm run lint:path -- "$FILE" 2>&1) && exit 0
+
+# Lint failed — inject errors into Claude's context so it fixes them immediately
+python3 -c "
+import json, sys
+out = sys.argv[1]
+f = sys.argv[2]
+print(json.dumps({
+    'hookSpecificOutput': {
+        'hookEventName': 'PostToolUse',
+        'additionalContext': 'Lint errors found in ' + f + ' — fix before continuing:\n' + out
+    }
+}))
+" "$OUTPUT" "$FILE"

.claude/settings.json

@@ -6,7 +6,9 @@
         "hooks": [
           {
             "type": "command",
-            "command": "python3 -c \"import sys,json; d=json.load(sys.stdin); f=d.get('tool_input',{}).get('file_path',''); print(f)\" | xargs -I{} sh -c 'case \"{}\" in *.ts|*.tsx) npm run lint:path -- \"{}\" 2>&1 ;; esac'"
+            "command": ".claude/hooks/lint-on-edit.sh",
+            "timeout": 30,
+            "statusMessage": "Linting..."
           }
         ]
       }