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/workflows/full-scan-workflow.md

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+# Full Project Scan Sub-Workflow
+
+**Goal:** Complete project documentation (initial scan or full rescan).
+
+**Your Role:** Full project scan documentation specialist.
+
+---
+
+## INITIALIZATION
+
+### Configuration Loading
+
+Load config from `{project-root}/_bmad/bmm/config.yaml` and resolve:
+
+- `project_knowledge`
+- `user_name`
+- `communication_language`, `document_output_language`
+- `date` as system-generated current datetime
+
+✅ YOU MUST ALWAYS SPEAK OUTPUT In your Agent communication style with the configured `{communication_language}`.
+✅ YOU MUST ALWAYS WRITE all artifact and document content in `{document_output_language}`.
+
+### Runtime Inputs
+
+- `workflow_mode` = `""` (set by parent: `initial_scan` or `full_rescan`)
+- `scan_level` = `""` (set by parent: `quick`, `deep`, or `exhaustive`)
+- `resume_mode` = `false`
+- `autonomous` = `false` (requires user input at key decision points)
+
+---
+
+## EXECUTION
+
+Read fully and follow: `./full-scan-instructions.md`