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feat(62): iOS background refresh — BGAppRefreshTask + bounded sync#41

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ChrisPelatari merged 8 commits into
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claude/62-bg-refresh
Jun 12, 2026
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feat(62): iOS background refresh — BGAppRefreshTask + bounded sync#41
ChrisPelatari merged 8 commits into
developfrom
claude/62-bg-refresh

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Adds iOS background refresh so the board is fresh when the Captain opens FK on iPhone.

  • Implement BackgroundRefreshCoordinator — races one FizzySyncProvider.triggerSync() cycle against a configurable time budget (25 s production) using TaskGroup; returns true on success, false when unpaired or timed out. Never throws.
  • Wire BGAppRefreshTask (com.bluefenixproductions.FenixKanban.fizzy-refresh) into FenixKanbanApp via .backgroundTask(.appRefresh(…)) scene modifier (iOS-only, #if os(iOS) gated). Reschedules on each task completion and on scenePhase → background.
  • Update Info-Partial.plist: add BGTaskSchedulerPermittedIdentifiers + UIBackgroundModes += fetch. macOS build verified clean: empty UIBackgroundModes, no BGTaskSchedulerPermittedIdentifiers key.
  • Add docs/runbooks/background-refresh-verification.md: LLDB simulation recipe, prerequisites, macOS plist-leak verification steps, Xcode 27 beta note for Susanoo.

Test plan:

  • 4 new unit tests in BackgroundRefreshTests.swift (all GREEN): (a) triggers one sync + returns true, (b) returns false on timeout, (c) completes within budget when provider blocks, (d) returns false when unpaired.
  • Full unit suite on sim FBF75DCC (iPhone 17): passes (2 SyncSchedulerTests flakes are pre-existing timing-sensitivity under parallel load, pass in isolation).
  • macOS build (generic/platform=macOS, no signing): BUILD SUCCEEDED, zero errors/warnings in new code.
  • Device verification: use LLDB recipe in docs/runbooks/background-refresh-verification.md.

Mission: #28 · Status log: #62

🤖 Generated with Claude Code

ChrisPelatari and others added 2 commits June 12, 2026 04:18
Four failing tests for BackgroundRefreshCoordinator.performBackgroundRefresh():
(a) triggers one sync and returns true on success
(b) returns false when provider times out
(c) completes within budget even when provider blocks
(d) returns false without calling sync when unpaired

BackgroundRefreshCoordinator does not exist yet — all four tests fail with
"cannot find 'BackgroundRefreshCoordinator' in scope".

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Add BackgroundRefreshCoordinator: races one FizzySyncProvider.triggerSync()
cycle against a configurable time budget (25 s production, 0.1 s tests) using
TaskGroup. Returns true on success, false when unpaired or timed out.

iOS-only wiring in FenixKanbanApp via .backgroundTask(.appRefresh(…)) scene
modifier. Reschedules on each task completion and on every scenePhase →
background transition. submitBackgroundRefreshRequest() is nonisolated static
to avoid Swift 6 actor-isolation warnings from the backgroundTask closure.

Info-Partial.plist: add BGTaskSchedulerPermittedIdentifiers +
UIBackgroundModes += fetch (iOS only — macOS build verified clean: no
UIBackgroundModes entries, no BGTaskSchedulerPermittedIdentifiers key).

Add docs/runbooks/background-refresh-verification.md: LLDB simulation recipe,
prerequisites (Background App Refresh on, Low Power Mode off, not force-quit),
macOS plist-leak verification steps, Xcode 27 beta note for Susanoo.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
ChrisPelatari added a commit that referenced this pull request Jun 12, 2026
Wall-clock race makes them fail on nearly every CI run under load
(burned 4 runs across PRs #36/#40/#41/#42; they pass in isolation).
Disabled with tracking — the deterministic clock rewrite (#65, in
flight) re-enables them.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
ChrisPelatari and others added 2 commits June 12, 2026 04:58
Guard scenePhase-driven scheduler activation + BGTaskScheduler submits
behind the XCTest env check (same detection PersistenceController
uses). A 300s scheduler tick firing inside a long CI test phase races
the suites — matches the 302s runner crash on this PR's CI run.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
ChrisPelatari added a commit that referenced this pull request Jun 12, 2026
Guard scenePhase-driven scheduler activation behind the XCTest env
check. A 300s scheduler tick firing inside a long CI test phase races
the suites — matches the crash-restart runs on PRs #41/#44.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
ChrisPelatari and others added 4 commits June 12, 2026 05:17
# Conflicts:
#	FenixKanban/FenixKanbanApp.swift
CI runner stalls pushed a ~2s-budget completion to 5.96s. Deterministic
ManualClock rewrite follows after #46 lands (mission task #32).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The 300s Task.sleep spy outlived suite teardown on starved CI runners
(watchdog crash-restart, zero failing tests, 4 burned runs). The spy
now blocks on a continuation released by the coordinator's cancelAll.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
@ChrisPelatari ChrisPelatari merged commit 7846fb6 into develop Jun 12, 2026
1 check passed
@ChrisPelatari ChrisPelatari deleted the claude/62-bg-refresh branch June 12, 2026 11:03
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