Ignore local runtime artifacts and scratch drafts

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.gitignore

@@ -10,3 +10,26 @@ build/
 .venv/
 credentials/
 
+# local runtime artifacts
+.coverage
+*.db
+*.sqlite
+logs/
+working/
+projects/
+*.stackdump
+nul
+screencapture-*.png
+
+# editor / tool local state
+.claude/settings.local.json
+.claude/skills/content-researcher/scripts/working/
+
+# scratch drafts
+*- Cora Data.md
+*- Draft.md
+*- Outline.md
+
+# external tool sources pulled in for reference
+amazon-sdk/
+