Remove dual code paths in the autoflush system. FlushManager is now the
only code path for auto-flush operations.
Changes:
- Remove legacy globals: isDirty, needsFullExport, flushTimer
- Remove flushToJSONL() wrapper function (was backward-compat shim)
- Simplify markDirtyAndScheduleFlush/FullExport to just call FlushManager
- Update tests to use FlushManager or flushToJSONLWithState directly
FlushManager handles all flush state internally in its run() goroutine,
eliminating the need for global state. Sandbox mode and tests that do
not need flushing get a no-op when FlushManager is nil.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Critical fixes to code review findings:
1. Remove global state access from flushToJSONLWithState
- FlushManager now has true single ownership of flush state
- No more race conditions from concurrent global state access
- flushToJSONLWithState trusts only the flushState parameter
- Legacy wrapper handles success detection via failure count
2. Fix shutdown timeout data loss risk
- Increased timeout from 5s → 30s to prevent data loss
- Added detailed comments explaining the timeout rationale
- Better error message indicates potential data loss scenario
Implementation details:
- New FlushManager uses event-driven single-owner pattern
- Channels eliminate shared mutable state (markDirtyCh, flushNowCh, etc.)
- Comprehensive race detector tests verify concurrency safety
- Backward compatible with existing tests via legacy code path
- ARCHITECTURE.md documents design principles and guarantees
Test results:
- All race detector tests pass (TestFlushManager*)
- Legacy API compatibility verified (TestMarkDirtyAndScheduleFlush*)
- No race conditions detected under concurrent load
Future improvements tracked as beads:
- bd-gdn: Add functional tests for flush correctness verification
- bd-5xt: Log errors from timer-triggered flushes
- bd-i00: Convert magic numbers to named constants
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>