Add Apple Watch app (TickTick-style) + midnight period notifications

WenzaWatch (new watchOS target, embed disabled until the watchOS platform is
installed — see project.yml note):
- Today list of actionable tasks (dated today/overdue + recurring occurrences),
  tap-to-complete with haptics, and add-via-dictation.
- Reads/writes the same tasks through the shared iCloud KV store that
  CloudSyncManager mirrors on the phone; watch entitlement uses the iOS app's
  kvstore identifier so they share one store. New tasks include all required
  TaskItem keys so the phone decodes them.
- NOTE: not compiled here (watchOS SDK absent on this machine); iOS build
  verified green with the embed commented out.

Period notifications: day/week/month/year now all fire at midnight (00:00),
adding the daily "One more day passed." (Pretty Progress style).

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

project.yml

@@ -38,6 +38,11 @@ targets:
     dependencies:
       - target: KisaniCalWidgets
         embed: true
+      # WenzaWatch is built/embedded only when the watchOS platform is installed.
+      # Re-enable shipping it on the Watch by uncommenting the embed below (requires
+      # Xcode > Settings > Components > watchOS):
+      # - target: WenzaWatch
+      #   embed: true
     settings:
       base:
         SWIFT_VERSION: 5.9
@@ -85,3 +90,27 @@ targets:
         LD_RUNPATH_SEARCH_PATHS: "$(inherited) @executable_path/Frameworks @executable_path/../../Frameworks"
         APPLICATION_EXTENSION_API_ONLY: YES
         CODE_SIGN_ENTITLEMENTS: KisaniCalWidgets/KisaniCalWidgets.entitlements
+
+  WenzaWatch:
+    type: application
+    platform: watchOS
+    deploymentTarget: "10.0"
+    sources:
+      - path: WenzaWatch
+    info:
+      path: WenzaWatch/Info.plist
+      properties:
+        CFBundleDisplayName: "Wenza"
+        CFBundleShortVersionString: "$(MARKETING_VERSION)"
+        CFBundleVersion: "$(CURRENT_PROJECT_VERSION)"
+        WKApplication: true
+        WKCompanionAppBundleIdentifier: com.kutesir.KisaniCal
+    settings:
+      base:
+        SWIFT_VERSION: 5.9
+        GENERATE_INFOPLIST_FILE: NO
+        PRODUCT_BUNDLE_IDENTIFIER: com.kutesir.KisaniCal.watchkitapp
+        TARGETED_DEVICE_FAMILY: "4"
+        CODE_SIGN_STYLE: Automatic
+        CODE_SIGN_ENTITLEMENTS: WenzaWatch/WenzaWatch.entitlements
+        INFOPLIST_KEY_CFBundleDisplayName: "Wenza"