3 Commits

Include renames

Author	SHA1	Message	Date
pingqiuandClaude Opus 4.6	368a956aee	fix: correct catch-up entry counting and rebuild transfer gate ... Entry counting: - Session.setRange now initializes recoveredTo = startLSN - RecordCatchUpProgress delta counts only actual catch-up work (recoveredTo - startLSN), not the replica's pre-existing prefix Rebuild transfer gate: - BeginTailReplay requires TransferredTo >= SnapshotLSN - Prevents tail replay on incomplete base transfer 3 new regression tests: - BudgetEntries_NonZeroStart_CountsOnlyDelta (30 entries within 50 budget) - BudgetEntries_NonZeroStart_ExceedsBudget (30 entries exceeds 20 budget) - Rebuild_PartialTransfer_BlocksTailReplay Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 21:35:03 -07:00
pingqiuandClaude Opus 4.6	bb24b4b039	fix: encapsulate engine sender/session authority state ... All mutable state on Sender and Session is now unexported: - Sender.state, .epoch, .endpoint, .session, .stopped → accessors - Session.id, .phase, .kind, etc. → read-only accessors - Session() replaced by SessionSnapshot() (returns disconnected copy) - SessionID() and HasActiveSession() for common queries - AttachSession returns (sessionID, error) not (*Session, error) - SupersedeSession returns sessionID not *Session Budget configuration via SessionOption: - WithBudget(CatchUpBudget) passed to AttachSession - No direct field mutation on session from external code New test: Encapsulation_SnapshotIsReadOnly proves snapshot mutation does not leak back to sender state. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 20:58:28 -07:00
pingqiuandClaude Opus 4.6	20d70f9fb6	feat: add V2 engine replication core (Phase 05 Slice 1) ... Creates sw-block/engine/replication/ — the real V2 engine ownership core, promoted from sw-block/prototype/enginev2/ with all accepted invariants. Files: - types.go: Endpoint, ReplicaState, SessionKind, SessionPhase, FSM transitions - sender.go: per-replica Sender with full execution + rebuild APIs - session.go: Session with identity, phases, frozen target, truncation, budget - registry.go: Registry with reconcile + assignment intent + epoch invalidation - budget.go: CatchUpBudget (duration, entries, stall detection) - rebuild.go: RebuildState FSM (snapshot+tail vs full base) - outcome.go: HandshakeResult + ClassifyRecoveryOutcome Tests (ownership_test.go, 13 tests): - Changed-address invalidation (A10) - Stale session ID rejected at all APIs (A3) - Stale completion after supersede (A3) - Epoch bump invalidates all sessions (A3) - Stale assignment epoch rejected - Rebuild exclusivity (catch-up APIs rejected) - Rebuild full lifecycle - Frozen target rejects chase (A5) - Budget violation escalates (A5) - E2E: 3 replicas, 3 outcomes Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 20:51:01 -07:00