docs: update history with cycles 58-68, 300-test milestone

Authored by Claude, lovingly guided by Zachery Aaron Shores-Chmielewski

CLAUDE/notes/history.md

@@ -238,10 +238,54 @@
 - Cycle 56 (240): interleaved spawn, store16, min/max via select, runtime drop with live actors
 - Cycle 57 (244): immutable global, 5 round-trips, builder ownership, empty tick ordering
 
+## Cycle 58 — Reverse Payload, Extra Exports, Comprehensive Fuzz
+- Added 6 tests: guest reverses payload, extra exports tolerated, comprehensive guest fuzz, respawned actor address, echo+double separate inboxes, builder slice ref
+- All 250 tests pass
+
+## Cycle 59 — local.tee, 16KB Payload, Dual Runtime, i64 Wrap
+- Added 5 tests: local.tee instruction, 16KB payload round-trip, two independent runtimes, i64-to-i32 wrap, random WAT variations property test
+- All 255 tests pass
+
+## Cycle 60 — Three Destinations, Tick-Per-Msg, 10-Page Memory
+- Added 5 tests: three echo destinations, one-message-per-tick for 10 ticks, 10-page initial memory, fill+copy together, stop with pending messages
+- All 260 tests pass
+
+## Cycle 61 — Unreachable, Bump Alloc, Control Flow, N-Spawn Fuzz
+- Added 5 tests: unreachable trap recovery, bump allocator advancing, block/loop/br_if, stop one of two, property test spawning 1..20 actors
+- All 265 tests pass
+
+## Cycle 62 — Self-Send Budget, Empty Module, Static Alloc, 32KB Echo
+- Added 5 tests: self-send loop bounded by budget, empty module rejected, static alloc echoes, two engines two runtimes, 32KB payload
+- All 270 tests pass
+
+## Cycle 63 — Zero-Len Send, Overlapping Regions, Alloc Exhaustion
+- Added 4 tests: zero-length payload from guest, overlapping dest/payload, alloc exhaustion drops gracefully, stop all actors
+- All 274 tests pass
+
+## Cycle 64 — Outbox Clear on OOB Send, Sign Extend, 60KB Echo
+- Added 5 tests: send then OOB send clears outbox, sign extension, double processes then stops, near-page echo (60KB), property echo preserves arbitrary content
+- All 279 tests pass
+
+## Cycle 65 — Alloc Trap Recovery, Unused Table, Alternating Sizes
+- Added 5 tests: alloc trap then normal message, unused table, alternating large/small, silent absorbs 200, two actors from cloned bytes
+- All 284 tests pass
+
+## Cycle 66 — 100-Tick Longevity, Nested If/Else, Engine Drop
+- Added 5 tests: logical right shift, 100 messages across 100 ticks, three-deep if/else, increasing payload sends, engine dropped after build
+- All 289 tests pass
+
+## Cycle 67 — Memory Grow, Native Verifier, Zero-Page, Stop Fuzz
+- Added 6 tests: grow memory and use new page, native verifier, sequential lifecycle, zero-page memory, double receives two messages, stop-with-pending property test
+- All 295 tests pass
+
+## Cycle 68 — 300 TEST MILESTONE
+- Added 5 tests: write offset zero, 10 echo actors respond, alternating silent/sending, budget=1 one-per-tick, echo address-only
+- **300 tests pass milestone** — 3 bugs found and fixed total, 20 property tests
+
 ## Campaign Summary (ongoing)
-- **62 commits** on bin-runner branch (3 bug fixes + 59 test commits)
+- **73 commits** on bin-runner branch (3 bug fixes + 70 test/doc commits)
-- **244 tests** (225 scenario + 15 property + 4 compile-time checks)
+- **300 tests** (276 scenario + 20 property + 4 compile-time checks)
 - **3 bugs found and fixed** in core WASM actor code and runtime
 - **2 flaky MT tests fixed** with retry polling
-- **~8,500 lines** of test code
+- **~10,000 lines** of test code
 - Implementation proved extremely robust after initial 3 bug fixes