docs(bf-5r8a): note that memoryProfiler.ts was already implemented

The file src/memoryProfiler.ts already exists and was added in commit
233e381. All 90 web server tests pass. The bead description indicated
the file was missing, but it is present and functional.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

notes/bf-5r8a.md

@@ -0,0 +1,30 @@
+# bf-5r8a: memoryProfiler.ts Already Implemented
+
+## Issue
+Bead bf-5r8a reported that `src/memoryProfiler.ts` was missing, causing `src/web/server.ts` import failures and blocking web server tests.
+
+## Investigation
+The file `src/memoryProfiler.ts` **already exists** and was implemented in commit `233e381` (feat(bf-5r8a): add memoryProfiler module for real-time memory profiling).
+
+## Verification
+1. File exists at `/home/coding/FABRIC/src/memoryProfiler.ts`
+2. All 90 web server tests pass:
+   ```
+   Test Files  1 passed (1)
+        Tests  90 passed (90)
+   ```
+3. The module exports `getMemoryProfiler()` as expected
+4. `server.ts` imports work correctly
+
+## Implementation Details
+The memory profiler provides:
+- `capture()` - Capture current memory state
+- `getStats()` - Get memory stats with trend analysis
+- `setBaseline()` - Set baseline for comparisons
+- `diffFromBaseline()` - Get diff from baseline
+- `formatMemory(snapshot)` - Format memory as human-readable string
+- `writeHeapSnapshot()` - Write V8 heap snapshot to disk
+- `getRecent(count)` - Get recent snapshots
+
+## Conclusion
+No action needed. The issue was resolved prior to this bead being assigned.