chore: FSD stabilization, strict TDD enforcement, and unlearn mechanism

- implemented self-healing unlearn for Qdrant false positives
- centralized testing logic in conftest
- documented core rules, ai standards, and goap philosophy
- purged old dev scratchpads

.gitignore

@@ -24,3 +24,16 @@ Pipfile.lock
 *.log*
 *.ini
 *.db
+
+# Debug artifacts
+scratch*.py
+test_compress.py
+test_fixtures.py
+output.txt
+e2e_*.log
+traceback.log
+
+# Coverage
+htmlcov/
+.coverage
+coverage.xml