Add memory/ with audit findings and framework knowledge

7 memory files covering:
- audit-bug-patterns: recurring status.py bug patterns
- vram-model-matching: three-tier model prefix matching
- dashboard-security: .state priority, CORS removal, register-guards
- state-machine-workflow: legal transitions and approval gates
- testing-conventions: pytest patterns and helpers
- audit-process: report conventions and batch processing
- framework-architecture: enforcement layers and key files

memory/testing-conventions.md

@@ -0,0 +1,12 @@
+# Testing conventions for automaton framework
+
+- Test suite: `python3 -m pytest tests/ -v` (249 tests as of audit completion)
+- Tests call status.py via subprocess: `_run_status(["--flag", "val"], project)` pattern in test_status.py
+- `_create_task(project, task_name, phase)` helper creates task via `--create-task` and writes `.state` file
+- `tmp_project` fixture creates `.automaton/tasks/` structure in tmp_path
+- Dashboard tests in test_app.py use `_make_task()` helper and `determine_task_state()` directly
+- When changing phase mappings (e.g. TEST_PLAN.md → test_design), update BOTH status.py tests AND test_task.py tests
+- vram_detect tests import module directly: `import vram_detect as vram`
+- Framework self-consistency tests in test_prompt_paths.py verify canonical task paths in prompts
+- Compile check: `python3 -m py_compile automaton/**/*.py scripts/*.py`
+- Shell syntax check: `bash -n scripts/*.sh`