Add App Store release pipeline, adopt ISC license, add unit test target

- Scripts/release.sh archives and uploads the macOS app via the
  appstore-publish skill's API-driven pipeline (xcodebuild + App Store
  Connect key, no fastlane); ExportOptions-macOS.plist adapts the skill's
  iOS-centric export options for generic/platform=macOS. Scripts/metadata/
  drafts the listing from the README. Canonical asc-*.swift scripts are
  referenced in place from indie-skills, matching Weight/HIIT.
- Replace the all-rights-reserved LICENSE.md with the portfolio-standard
  ISC license (REVIEW2 D2b), preserving the existing copyright year/holder.
- Add an IceGlassTests target (project.yml) with a real smoke test suite
  covering GameState's progression-rank ordering and polling-interval
  mapping — logic MainService relies on to reject stale API regressions.

Scripts/metadata/README.md

@@ -0,0 +1,58 @@
+# App Store metadata
+
+Local source-of-truth for the **IceGlass (macOS)** App Store listing. The
+appstore-publish skill's `asc-metadata.swift` (invoked in place from
+`../indie-skills`) reads this folder and pushes it to App Store Connect via
+the API; only files that are present get pushed. Then `asc-submit.swift`
+attaches the build and submits.
+
+```
+set -a; source .env.release; set +a; swift ../indie-skills/skills/appstore-publish/scripts/asc-metadata.swift --bundle dev.rzen.indie.IceGlass --version X.Y.Z --dry-run   # preview
+set -a; source .env.release; set +a; swift ../indie-skills/skills/appstore-publish/scripts/asc-metadata.swift --bundle dev.rzen.indie.IceGlass --version X.Y.Z             # push
+set -a; source .env.release; set +a; swift ../indie-skills/skills/appstore-publish/scripts/asc-submit.swift --bundle dev.rzen.indie.IceGlass --version X.Y.Z --submit      # submit
+```
+
+**Note:** this metadata set is for the **macOS** app record only. IceGlass
+also ships an iOS companion (`IceGlass-iOS`, bundle ID
+`dev.rzen.indie.IceGlass.iOS`) that isn't wired into the release pipeline
+yet — when it's ready to publish, give it its own App Store Connect app
+record and its own sibling metadata directory (e.g. `Scripts/metadata-ios/`),
+since `asc-metadata.swift` currently queries the `IOS` platform filter when
+looking up versions, not `MAC_OS`.
+
+## Layout & character limits
+
+| File | Field | Limit | API resource |
+|---|---|---|---|
+| `app/<locale>/name.txt` | App name | 30 | `appInfoLocalizations` |
+| `app/<locale>/subtitle.txt` | Subtitle | 30 | `appInfoLocalizations` |
+| `app/<locale>/privacy_url.txt` | Privacy policy URL | — | `appInfoLocalizations` |
+| `app/categories.json` | Categories | — | `appInfos` |
+| `version/<locale>/description.txt` | Description | 4000 | `appStoreVersionLocalizations` |
+| `version/<locale>/keywords.txt` | Keywords (comma-sep) | 100 | `appStoreVersionLocalizations` |
+| `version/<locale>/promotional_text.txt` | Promotional text | 170 | `appStoreVersionLocalizations` |
+| `version/<locale>/whats_new.txt` | What's New | 4000 | `appStoreVersionLocalizations` |
+| `version/<locale>/support_url.txt` | Support URL | — | `appStoreVersionLocalizations` |
+| `version/review.json` | Review contact / demo / notes | — | `appStoreReviewDetails` |
+| `screenshots/<locale>/<DISPLAY_TYPE>/*.png` | Screenshots | — | `appScreenshotSets` |
+
+`name` + `subtitle` are **app-level**; `description` + `keywords` are
+**version-level**. `whats_new.txt` only applies after the first version —
+leave it out for 1.0. No `whats_new.txt` or `screenshots/` are checked in
+yet — screenshots still need to be captured (see the appstore-publish
+skill's "Step 3 — Screenshots" for the simulator-capture recipe; macOS
+screenshots are plain `screencapture`/window captures at the App Store's
+required pixel sizes, not simulator grabs).
+
+## Screenshot display types (macOS)
+
+Common types: `APP_DESKTOP` (1280×800 or larger, 16:10). One folder per
+device class; filenames sort the order. The local set is authoritative —
+re-running replaces the remote set for any display type you provide.
+
+## Not handled here (separate resource families)
+
+Age rating (`ageRatingDeclarations`), pricing/availability
+(`appPriceSchedules` / `appAvailabilities`), and App Privacy labels
+(`appDataUsages`). `asc-submit.swift --submit` (see the appstore-publish
+skill) reports any of these that block the submission.