docs: log KC-72 (StreakLogicTests fix + runner recovery)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

KisaniCal/ISSUES.md

@@ -2643,3 +2643,50 @@ Not run end-to-end yet — needs the user to generate the App Store Connect
 API key and add the 3 secrets before the next merge to `main` actually
 exercises this path. `ExportOptions.plist` needed no changes (already
 `method: app-store` with the correct team ID).
+
+## KC-72 — Fix StreakLogicTests compile error + a genuinely broken CI runner
+
+Status: Implemented and build-verified (see Note — this is the first entry
+all session with real `xcodebuild` verification, not just self-review)
+Reported by: Discovered while testing KC-71's release pipeline
+Area: CI infra + `KisaniCalTests/StreakLogicTests.swift`
+
+### Description
+Two separate, real problems surfaced while trying to actually exercise the
+CI/CD pipeline for the first time all session:
+
+1. **The self-hosted runner (`act_runner` on Serenity) was broken all
+   session.** It registered with Gitea successfully ("declare successfully"
+   in its log) but its job-polling loop never actually started — zero log
+   output afterward even at debug level, confirmed across multiple
+   restarts. Its log showed no successful job since 01:52 that morning,
+   meaning it silently missed every one of ~20 pushes to `develop`
+   throughout the session. Root cause not fully isolated (stuck goroutine,
+   suspected); fixed by a full re-registration from scratch (fresh token,
+   delete `.runner`, `act_runner register --no-interactive`, reload the
+   LaunchAgent) rather than continuing to debug the stuck process.
+2. **Once CI actually ran for the first time, it immediately caught a
+   real, pre-existing compile error**, unrelated to anything built
+   tonight: `StreakLogicTests.swift` calls `WorkoutViewModel
+   .totalAchievedWorkoutDays(...)` and `TaskViewModel.completionCount
+   (...)`, both `@MainActor`-isolated, from a test class that wasn't
+   itself marked `@MainActor` — a Swift 6 strict-concurrency error.
+   `RecurrenceTests.swift` in the same target already uses the correct
+   pattern (`@MainActor final class RecurrenceTests: XCTestCase`);
+   `StreakLogicTests` was just missing the same annotation.
+
+### Change
+- Added `@MainActor` to `StreakLogicTests`'s class declaration.
+- Fixed the runner registration (infra only, no code change).
+
+Files: `KisaniCalTests/StreakLogicTests.swift`.
+
+### Note
+**This is the one entry all session that's actually build-verified, not
+self-reviewed.** Ran the full test suite locally via `xcodebuild test`
+on a real simulator (iPhone 17 Pro, `DEVELOPER_DIR` pointed at the
+external-volume Xcode) — **78/78 tests pass, 0 failures** — which
+incidentally also confirms every other change from KC-51 through KC-71
+this session actually compiles cleanly, since they're all in the same
+build. Long-pending session task "Run XCTest suite on simulator" is now
+done.