danspark · Sep 12, 2026 · Sep 12, 2026 · Sep 12, 2026 · Sep 12, 2026 · Sep 12, 2026
diff --git a/.github/workflows/tennis-watch-ci.yml b/.github/workflows/tennis-watch-ci.yml
@@ -0,0 +1,119 @@
+name: Tennis Watch CI
+
+on:
+  push:
+    branches: [main]
+    paths: [tennis-watch/**, .github/workflows/tennis-watch-ci.yml, .github/workflows/tennis-watch-release.yml]
+  pull_request:
+    paths: [tennis-watch/**, .github/workflows/tennis-watch-ci.yml, .github/workflows/tennis-watch-release.yml]
+  workflow_dispatch:
+
+permissions:
+  actions: read
+  contents: read
+
+jobs:
+  release-version:
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    permissions:
+      contents: write
+    uses: ./.github/workflows/semantic-release-version.yml
+    with:
+      application-directory: tennis-watch
+      tag-prefix: tennis-watch-v
+    secrets: inherit
+
+  build-test-apk:
+    needs: release-version
+    if: always() && (needs.release-version.result == 'success' || needs.release-version.result == 'skipped')
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    defaults:
+      run:
+        working-directory: tennis-watch
+    env:
+      CI: true
+    steps:
+      - uses: actions/checkout@v7
+        with:
+          fetch-depth: 0
+          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+      - uses: actions/setup-dotnet@v5
+        with:
+          global-json-file: tennis-watch/global.json
+      - uses: actions/setup-dotnet@v5
+        with:
+          global-json-file: tennis-watch/src/TennisWatch/global.json
+      - uses: actions/setup-java@v5
+        with:
+          distribution: temurin
+          java-version: 17
+      - name: Install Android workload
+        working-directory: tennis-watch/src/TennisWatch
+        run: dotnet workload install maui-android --skip-manifest-update
+      - name: Build, test, and package
+        env:
+          RELEASE_VERSION: ${{ needs.release-version.outputs.version }}
+        run: |
+          if [[ -n "$RELEASE_VERSION" ]]; then
+            ./build.sh --release-version "$RELEASE_VERSION"
+          else
+            ./build.sh
+          fi
+      - name: Detect covered input changes
+        id: covered
+        if: github.event_name == 'pull_request'
+        env:
+          TARGET_SHA: ${{ github.event.pull_request.base.sha }}
+        run: |
+          if git cat-file -e "$TARGET_SHA:tennis-watch/tests/TennisWatch.Tests/TennisWatch.Tests.csproj" 2>/dev/null &&
+            ! git diff --quiet "$TARGET_SHA"...HEAD -- src/TennisWatch.Core tests Directory.Build.props Directory.Packages.props global.json; then
+            echo "changed=true" >> "$GITHUB_OUTPUT"
+          fi
+      - name: Fetch base coverage
+        id: base-coverage
+        if: steps.covered.outputs.changed == 'true'
+        continue-on-error: true
+        env:
+          CRAP_SCORE_API_URL: ${{ github.api_url }}
+          CRAP_SCORE_GITHUB_TOKEN: ${{ github.token }}
+        run: >-
+          dotnet run --project ../tools/CrapScore/CrapScore.csproj -c Release --no-build --
+          download-artifact ${{ github.repository }} ${{ github.event.pull_request.base.sha }}
+          ../artifacts/tennis-watch-base-coverage tennis-watch-crap-score
+      - uses: actions/checkout@v7
+        if: steps.covered.outputs.changed == 'true' && steps.base-coverage.outcome == 'failure'
+        with:
+          ref: ${{ github.event.pull_request.base.sha }}
+          path: artifacts/tennis-watch-base
+      - uses: actions/setup-dotnet@v5
+        if: steps.covered.outputs.changed == 'true' && steps.base-coverage.outcome == 'failure'
+        with:
+          global-json-file: artifacts/tennis-watch-base/tennis-watch/global.json
+      - name: Measure base coverage
+        if: steps.covered.outputs.changed == 'true' && steps.base-coverage.outcome == 'failure'
+        working-directory: artifacts/tennis-watch-base/tennis-watch
+        run: >-
+          dotnet test tests/TennisWatch.Tests/TennisWatch.Tests.csproj -c Release
+          --collect:"XPlat Code Coverage"
+          --results-directory ${{ github.workspace }}/artifacts/tennis-watch-base-coverage
+      - name: Check CRAP reduction
+        if: steps.covered.outputs.changed == 'true'
+        run: >-
+          dotnet run --project ../tools/CrapScore/CrapScore.csproj -c Release --no-build --
+          artifacts/test-results --base-reports ../artifacts/tennis-watch-base-coverage --target 5
+      - uses: actions/upload-artifact@v7
+        if: always()
+        with:
+          name: tennis-watch-build
+          path: |
+            tennis-watch/artifacts/TennisWatch.apk
+            tennis-watch/artifacts/coverage/crap-score.md
+            tennis-watch/artifacts/release-version.txt
+          if-no-files-found: error
+      - uses: actions/upload-artifact@v7
+        if: always()
+        with:
+          name: tennis-watch-crap-score-${{ github.event.pull_request.head.sha || github.sha }}
+          path: tennis-watch/artifacts/test-results/**/coverage.cobertura.xml
+          if-no-files-found: error
diff --git a/.github/workflows/tennis-watch-release.yml b/.github/workflows/tennis-watch-release.yml
@@ -0,0 +1,60 @@
+name: Tennis Watch release
+
+on:
+  workflow_run:
+    workflows:
+      - Tennis Watch CI
+    types:
+      - completed
+
+concurrency:
+  group: tennis-watch-release
+  cancel-in-progress: false
+
+permissions:
+  contents: read
+
+jobs:
+  release:
+    name: Publish Tennis Watch APK
+    if: >-
+      github.event.workflow_run.conclusion == 'success' &&
+      github.event.workflow_run.event == 'push' &&
+      github.event.workflow_run.head_branch == 'main'
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: write
+
+    steps:
+      - name: Check out tested commit
+        uses: actions/checkout@v7
+        with:
+          fetch-depth: 0
+          ref: ${{ github.event.workflow_run.head_sha }}
+
+      - name: Download tested Tennis Watch build
+        uses: actions/download-artifact@v7
+        with:
+          name: tennis-watch-build
+          path: tennis-watch/artifacts
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          run-id: ${{ github.event.workflow_run.id }}
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v7
+        with:
+          node-version: 24
+
+      - name: Install locked release tooling
+        run: npm ci --prefix .github/release
+
+      - name: Bootstrap Tennis Watch version history
+        run: .github/release/bootstrap-version-tag.sh tennis-watch-v
+
+      - name: Publish release
+        working-directory: tennis-watch
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          SEMANTIC_RELEASE_BIN: ${{ github.workspace }}/.github/release/node_modules/.bin/semantic-release
+        run: '"$SEMANTIC_RELEASE_BIN"'
diff --git a/tennis-watch/.editorconfig b/tennis-watch/.editorconfig
@@ -0,0 +1,11 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 4
+
+[*.{json,yml}]
+indent_size = 2
diff --git a/tennis-watch/.gitignore b/tennis-watch/.gitignore
@@ -0,0 +1,3 @@
+artifacts/
+.impeccable/review/
+.aspire/
diff --git a/tennis-watch/.impeccable/design.json b/tennis-watch/.impeccable/design.json
@@ -0,0 +1,165 @@
+{
+  "schemaVersion": 2,
+  "generatedAt": "2026-09-12T17:14:09Z",
+  "title": "Design System: Tennis Watch",
+  "extensions": {
+    "colorMeta": {
+      "background": {
+        "role": "neutral",
+        "displayName": "OLED black",
+        "tonalRamp": [
+          "oklch(15% 0.0000 0.0)",
+          "oklch(26% 0.0000 0.0)",
+          "oklch(38% 0.0000 0.0)",
+          "oklch(49% 0.0000 0.0)",
+          "oklch(61% 0.0000 0.0)",
+          "oklch(72% 0.0000 0.0)",
+          "oklch(84% 0.0000 0.0)",
+          "oklch(95% 0.0000 0.0)"
+        ]
+      },
+      "score": {
+        "role": "neutral",
+        "displayName": "Score off-white",
+        "tonalRamp": [
+          "oklch(15% 0.0057 128.5)",
+          "oklch(26% 0.0057 128.5)",
+          "oklch(38% 0.0057 128.5)",
+          "oklch(49% 0.0057 128.5)",
+          "oklch(61% 0.0057 128.5)",
+          "oklch(72% 0.0057 128.5)",
+          "oklch(84% 0.0057 128.5)",
+          "oklch(95% 0.0057 128.5)"
+        ]
+      },
+      "control-fill": {
+        "role": "neutral",
+        "displayName": "Graphite fill",
+        "tonalRamp": [
+          "oklch(15% 0.0111 156.4)",
+          "oklch(26% 0.0111 156.4)",
+          "oklch(38% 0.0111 156.4)",
+          "oklch(49% 0.0111 156.4)",
+          "oklch(61% 0.0111 156.4)",
+          "oklch(72% 0.0111 156.4)",
+          "oklch(84% 0.0111 156.4)",
+          "oklch(95% 0.0111 156.4)"
+        ]
+      },
+      "secondary": {
+        "role": "neutral",
+        "displayName": "History gray",
+        "tonalRamp": [
+          "oklch(15% 0.0145 152.5)",
+          "oklch(26% 0.0145 152.5)",
+          "oklch(38% 0.0145 152.5)",
+          "oklch(49% 0.0145 152.5)",
+          "oklch(61% 0.0145 152.5)",
+          "oklch(72% 0.0145 152.5)",
+          "oklch(84% 0.0145 152.5)",
+          "oklch(95% 0.0145 152.5)"
+        ]
+      },
+      "separator": {
+        "role": "neutral",
+        "displayName": "Separator gray",
+        "tonalRamp": [
+          "oklch(15% 0.0127 153.5)",
+          "oklch(26% 0.0127 153.5)",
+          "oklch(38% 0.0127 153.5)",
+          "oklch(49% 0.0127 153.5)",
+          "oklch(61% 0.0127 153.5)",
+          "oklch(72% 0.0127 153.5)",
+          "oklch(84% 0.0127 153.5)",
+          "oklch(95% 0.0127 153.5)"
+        ]
+      },
+      "divider": {
+        "role": "neutral",
+        "displayName": "Divider gray",
+        "tonalRamp": [
+          "oklch(15% 0.0085 159.6)",
+          "oklch(26% 0.0085 159.6)",
+          "oklch(38% 0.0085 159.6)",
+          "oklch(49% 0.0085 159.6)",
+          "oklch(61% 0.0085 159.6)",
+          "oklch(72% 0.0085 159.6)",
+          "oklch(84% 0.0085 159.6)",
+          "oklch(95% 0.0085 159.6)"
+        ]
+      }
+    },
+    "typographyMeta": {
+      "display": {
+        "displayName": "Point score",
+        "purpose": "Native condensed bold text; uniform fitting from 24sp to the display size in 1sp steps."
+      },
+      "games": {
+        "displayName": "Current games",
+        "purpose": "Medium weight and score color distinguish the current set."
+      },
+      "separator": {
+        "displayName": "Point separator",
+        "purpose": "Regular multiplication sign between point scores."
+      },
+      "completed-set": {
+        "displayName": "Completed set",
+        "purpose": "Regular secondary text precedes current games."
+      }
+    }
+  },
+  "components": [
+    {
+      "name": "Point control",
+      "kind": "button",
+      "refersTo": "point-control",
+      "description": "Native SVG in a 48dp touch area. Pressed opacity is 0.55. The outline on keyboard focus is for this browser preview.",
+      "html": "<div class=\"ds-point-preview\"><button class=\"ds-control ds-point\" type=\"button\" aria-label=\"Add point to left side\"><svg aria-hidden=\"true\" xmlns=\"http://www.w3.org/2000/svg\" width=\"48\" height=\"48\" viewBox=\"0 0 48 48\">\n  <rect x=\"5\" y=\"3\" width=\"38\" height=\"42\" rx=\"16\" fill=\"#252B27\"/>\n  <path d=\"M24 16v16M16 24h16\" fill=\"none\" stroke=\"#F4F6F2\" stroke-width=\"2.3\" stroke-linecap=\"round\"/>\n</svg></button></div>",
+      "css": ".ds-control { display: block; width: 48px; height: 48px; padding: 0; border: 0; background: transparent; cursor: pointer; } .ds-control svg { display: block; } .ds-control:focus-visible { outline: 1px solid #F4F6F2; outline-offset: 2px; } .ds-control:active { opacity: 0.55; } .ds-point-preview { width: 48px; background: #000000; } .ds-point:hover { opacity: 1; } .ds-point:active { opacity: 0.55; }"
+    },
+    {
+      "name": "Undo control",
+      "kind": "button",
+      "refersTo": "undo-control",
+      "description": "Enabled and disabled native undo artwork. Opacity is 0.8 enabled, 0.55 pressed, and 0.3 disabled. The focus outline belongs to the browser preview.",
+      "html": "<div class=\"ds-undo-preview\"><button class=\"ds-control ds-undo\" type=\"button\" aria-label=\"Undo last point\"><svg aria-hidden=\"true\" xmlns=\"http://www.w3.org/2000/svg\" width=\"48\" height=\"48\" viewBox=\"0 0 48 48\">\n  <path d=\"M15 19a10 10 0 1 1 1.5 13M15 12v7h7\" fill=\"none\" stroke=\"#929B94\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"/>\n</svg></button><button class=\"ds-control ds-undo\" type=\"button\" aria-label=\"Undo last point unavailable\" disabled><svg aria-hidden=\"true\" xmlns=\"http://www.w3.org/2000/svg\" width=\"48\" height=\"48\" viewBox=\"0 0 48 48\">\n  <path d=\"M15 19a10 10 0 1 1 1.5 13M15 12v7h7\" fill=\"none\" stroke=\"#929B94\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"/>\n</svg></button></div>",
+      "css": ".ds-control { display: block; width: 48px; height: 48px; padding: 0; border: 0; background: transparent; cursor: pointer; } .ds-control svg { display: block; } .ds-control:focus-visible { outline: 1px solid #F4F6F2; outline-offset: 2px; } .ds-control:active { opacity: 0.55; } .ds-undo-preview { display: flex; gap: 8px; width: max-content; background: #000000; } .ds-undo { opacity: 0.8; } .ds-undo:hover { opacity: 0.8; } .ds-undo:active { opacity: 0.55; } .ds-undo:disabled { opacity: 0.3; cursor: default; }"
+    },
+    {
+      "name": "Round scoring face",
+      "kind": "custom",
+      "description": "Layout preview at 225px across with completed-set history. Browser fonts approximate Android; native text fitting and font padding follow DESIGN.md. Preview buttons show control states without changing the score.",
+      "html": "<div class=\"ds-face\" role=\"group\" aria-label=\"Tennis score\"><button class=\"ds-control ds-left-plus\" type=\"button\" aria-label=\"Add point to left side\"><svg aria-hidden=\"true\" xmlns=\"http://www.w3.org/2000/svg\" width=\"48\" height=\"48\" viewBox=\"0 0 48 48\">\n  <rect x=\"5\" y=\"3\" width=\"38\" height=\"42\" rx=\"16\" fill=\"#252B27\"/>\n  <path d=\"M24 16v16M16 24h16\" fill=\"none\" stroke=\"#F4F6F2\" stroke-width=\"2.3\" stroke-linecap=\"round\"/>\n</svg></button><span class=\"ds-label ds-points ds-left-points\">15</span><span class=\"ds-label ds-separator\">\u00d7</span><span class=\"ds-label ds-points ds-right-points\">30</span><button class=\"ds-control ds-right-plus\" type=\"button\" aria-label=\"Add point to right side\"><svg aria-hidden=\"true\" xmlns=\"http://www.w3.org/2000/svg\" width=\"48\" height=\"48\" viewBox=\"0 0 48 48\">\n  <rect x=\"5\" y=\"3\" width=\"38\" height=\"42\" rx=\"16\" fill=\"#252B27\"/>\n  <path d=\"M24 16v16M16 24h16\" fill=\"none\" stroke=\"#F4F6F2\" stroke-width=\"2.3\" stroke-linecap=\"round\"/>\n</svg></button><div class=\"ds-divider\"></div><div class=\"ds-label ds-games\"><span class=\"ds-completed\">6 \u00d7 0</span><span>0 \u00d7 1</span></div><button class=\"ds-control ds-undo\" type=\"button\" aria-label=\"Undo last point\"><svg aria-hidden=\"true\" xmlns=\"http://www.w3.org/2000/svg\" width=\"48\" height=\"48\" viewBox=\"0 0 48 48\">\n  <path d=\"M15 19a10 10 0 1 1 1.5 13M15 12v7h7\" fill=\"none\" stroke=\"#929B94\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"/>\n</svg></button></div>",
+      "css": ".ds-control { display: block; width: 48px; height: 48px; padding: 0; border: 0; background: transparent; cursor: pointer; } .ds-control svg { display: block; } .ds-control:focus-visible { outline: 1px solid #F4F6F2; outline-offset: 2px; } .ds-control:active { opacity: 0.55; } .ds-face { position: relative; width: 225px; height: 225px; overflow: hidden; border-radius: 50%; background: #000000; color: #F4F6F2; font-family: sans-serif; } .ds-face .ds-control { position: absolute; top: 43%; transform: translate(-50%, -50%); } .ds-face .ds-left-plus { left: 12.5%; } .ds-face .ds-right-plus { left: 87.5%; } .ds-face .ds-undo { left: 50%; top: 82.5%; opacity: 0.8; } .ds-face .ds-control:active { opacity: 0.55; } .ds-face .ds-label { position: absolute; display: flex; align-items: center; justify-content: center; transform: translate(-50%, -50%); white-space: nowrap; font-variant-numeric: tabular-nums; font-feature-settings: \"tnum\"; } .ds-face .ds-points { top: 43%; width: 25%; height: 66px; font-family: \"Roboto Condensed\", \"Arial Narrow\", sans-serif; font-stretch: condensed; font-size: 48px; font-weight: 700; line-height: 1; } .ds-face .ds-left-points { left: 33.2%; } .ds-face .ds-right-points { left: 66.8%; } .ds-face .ds-separator { left: 50%; top: 43%; width: 7.5%; height: 40px; color: #8B938D; font-size: 13px; font-weight: 400; } .ds-face .ds-divider { position: absolute; left: 25%; top: calc(57.5% - 0.375px); width: 50%; height: 0.75px; background: #343936; } .ds-face .ds-games { left: 50%; top: 65.5%; width: 76%; height: 32px; gap: 8px; font-size: 18px; font-weight: 500; } .ds-face .ds-completed { color: #929B94; font-size: 12px; font-weight: 400; }"
+    }
+  ],
+  "narrative": {
+    "northStar": "Monochrome sports instrument",
+    "overview": "Condensed bold point scores and filled graphite plus controls lead a black watch face. Current games, completed sets, and a small gray undo arrow sit below. The composition supports a quick glance and a tap on court.",
+    "keyCharacteristics": [
+      "Condensed point numerals hold the strongest visual emphasis.",
+      "Fixed touch areas surround compact artwork, leaving the upper watch face open."
+    ],
+    "rules": [
+      {
+        "name": "The score hierarchy rule",
+        "body": "Points lead; current games are larger and brighter than completed sets. Keep the multiplication separator smaller and dimmer than the points.",
+        "section": "typography"
+      },
+      {
+        "name": "The touch area rule",
+        "body": "Keep the fixed control dimensions in the frontmatter when adjusting screen proportions. The artwork is smaller than its touch area.",
+        "section": "layout"
+      }
+    ],
+    "dos": [
+      "Do preserve the filled plus controls and condensed bold points as the scoring screen's main row.",
+      "Do retain native text fitting, tabular figures, and fixed touch targets when adjusting proportions.",
+      "Do keep secondary scoring and undo visually quieter than the points."
+    ],
+    "donts": [
+      "Don't add names, menus, banners, extra controls, or a completion screen to this scoring view.",
+      "Don't draw a hardware bezel inside the app."
+    ]
+  }
+}
diff --git a/tennis-watch/.releaserc.json b/tennis-watch/.releaserc.json
@@ -0,0 +1,34 @@
+{
+  "branches": [
+    "main"
+  ],
+  "tagFormat": "tennis-watch-v${version}",
+  "plugins": [
+    [
+      "../.github/release/application-semantic-release.mjs",
+      {
+        "preset": "conventionalcommits",
+        "scope": "tennis-watch"
+      }
+    ],
+    [
+      "@semantic-release/exec",
+      {
+        "verifyReleaseCmd": "if [ -n \"$NEXT_RELEASE_VERSION_FILE\" ]; then printf '%s\\n' '${nextRelease.version}' > \"$NEXT_RELEASE_VERSION_FILE\"; else bash ../.github/release/verify-application-assets.sh '${nextRelease.version}' artifacts/release-version.txt artifacts/TennisWatch.apk; fi"
+      }
+    ],
+    [
+      "@semantic-release/github",
+      {
+        "assets": [
+          {
+            "path": "artifacts/TennisWatch.apk",
+            "label": "Tennis Watch Android APK"
+          }
+        ],
+        "successComment": false,
+        "failComment": false
+      }
+    ]
+  ]
+}