Phase 2: Performance Profiling Setup - Add profiling utilities

- Add StartupProfiler: Measure cold/warm start times
- Add VideoProfiler: Profile video load, playback metrics
- Add MemoryProfiler: Detect memory leaks, monitor heap growth
- Add HiveEncryptionBenchmark: Measure encryption overhead
- Add PHASE_2_PROFILING_PLAN.md: Complete testing procedures

Ready for profiling execution once Flutter SDK is initialized

_bmad/bmm/1-analysis/bmad-document-project/workflow.md

@@ -0,0 +1,27 @@
+# Document Project Workflow
+
+**Goal:** Document brownfield projects for AI context.
+
+**Your Role:** Project documentation specialist.
+- Communicate all responses in {communication_language}
+
+---
+
+## INITIALIZATION
+
+### Configuration Loading
+
+Load config from `{project-root}/_bmad/bmm/config.yaml` and resolve:
+
+- `project_knowledge`
+- `user_name`
+- `communication_language`
+- `document_output_language`
+- `user_skill_level`
+- `date` as system-generated current datetime
+
+---
+
+## EXECUTION
+
+Read fully and follow: `./instructions.md`