feat: enhance test coverage and fix layout warnings

.github/ISSUE_TEMPLATE/plugin_request.yml

@@ -0,0 +1,56 @@
+name: Plugin Request
+description: Request a new HyperRender plugin (e.g. math, charts, diagrams)
+title: "[Plugin Request] <plugin name>"
+labels: ["plugin", "enhancement"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for suggesting a plugin! Community plugins extend HyperRender without touching the core engine.
+        Read [PLUGIN_DEVELOPMENT.md](../blob/main/doc/PLUGIN_DEVELOPMENT.md) before submitting to understand what's buildable.
+
+  - type: input
+    id: tag_name
+    attributes:
+      label: HTML tag(s) to handle
+      description: Which custom or standard HTML tag(s) should this plugin render?
+      placeholder: "<math>, <latex>, <chart>, <mermaid>, ..."
+    validations:
+      required: true
+
+  - type: textarea
+    id: use_case
+    attributes:
+      label: Use case
+      description: What content will this plugin render? Where is it used? (CMS, e-book, documentation, etc.)
+      placeholder: "Our CMS exports math equations as <latex> tags inline with article text. We need them rendered as readable formulas on mobile."
+    validations:
+      required: true
+
+  - type: dropdown
+    id: tier
+    attributes:
+      label: Plugin tier
+      description: Block plugins take full width (like images). Inline plugins flow inside text lines (like icons).
+      options:
+        - Block (full width, like a figure or table)
+        - Inline (flows with text, like an icon or badge)
+        - Not sure
+    validations:
+      required: true
+
+  - type: textarea
+    id: proposed_package
+    attributes:
+      label: Rendering library (optional)
+      description: Any Flutter package you'd suggest for the actual rendering?
+      placeholder: "flutter_math_fork for LaTeX, fl_chart for charts, flutter_svg for SVGs, ..."
+
+  - type: checkboxes
+    id: willing_to_build
+    attributes:
+      label: Are you willing to build this?
+      options:
+        - label: "Yes — I can submit a PR (see PLUGIN_DEVELOPMENT.md for the guide)"
+        - label: "No — I'm requesting someone else builds it"
+        - label: "Partial — I can help review or test but not lead the implementation"

.github/ISSUE_TEMPLATE/plugin_submission.yml

@@ -0,0 +1,82 @@
+name: Plugin Submission
+description: Submit a community plugin you've built for HyperRender
+title: "[Plugin Submission] hyper_render_<name>"
+labels: ["plugin", "community"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for building a HyperRender plugin!
+        Please ensure your plugin meets the requirements in [PLUGIN_DEVELOPMENT.md — PR Requirements](../blob/main/doc/PLUGIN_DEVELOPMENT.md#pr-requirements-for-plugin-prs).
+
+  - type: input
+    id: package_name
+    attributes:
+      label: pub.dev package name
+      description: The package name you plan to publish (follow the `hyper_render_*` naming convention)
+      placeholder: hyper_render_math
+    validations:
+      required: true
+
+  - type: input
+    id: pub_url
+    attributes:
+      label: pub.dev URL or GitHub repo
+      placeholder: "https://github.com/yourname/hyper_render_math"
+    validations:
+      required: true
+
+  - type: input
+    id: tag_name
+    attributes:
+      label: HTML tag(s) handled
+      placeholder: "<math>, <latex>"
+    validations:
+      required: true
+
+  - type: dropdown
+    id: tier
+    attributes:
+      label: Plugin tier
+      options:
+        - Block (isInline == false)
+        - Inline (isInline == true)
+        - Both
+    validations:
+      required: true
+
+  - type: textarea
+    id: description
+    attributes:
+      label: What does it render?
+      description: One paragraph description for the plugin listing.
+    validations:
+      required: true
+
+  - type: textarea
+    id: dependencies
+    attributes:
+      label: External dependencies
+      description: List any Flutter packages your plugin depends on (so users know the transitive deps).
+      placeholder: "flutter_math_fork ^0.7.2"
+
+  - type: checkboxes
+    id: checklist
+    attributes:
+      label: Submission checklist
+      description: All items must be checked before the plugin can be listed.
+      options:
+        - label: "Package implements `HyperNodePlugin` from `hyper_render_core`"
+          required: true
+        - label: "`build()` returns `null` for unrecognized nodes (safe fallthrough)"
+          required: true
+        - label: "At least one widget test covering the happy path"
+          required: true
+        - label: "README includes a working code example"
+          required: true
+        - label: "CHANGELOG has an initial entry"
+          required: true
+        - label: "pubspec.yaml specifies `hyper_render_core: ^1.2.0` or later"
+          required: true
+        - label: "Tested on at least one mobile platform (iOS or Android)"
+          required: true

.github/workflows/analyze.yml

@@ -114,7 +114,7 @@ jobs:
       - name: flutter analyze --fatal-infos
         if: steps.filter.outputs.any_dart == 'true'
         run: |
-          flutter analyze --no-pub --fatal-infos 2>&1 | tee analyze_report.txt
+          flutter analyze --no-pub --fatal-warnings --fatal-infos 2>&1 | tee analyze_report.txt
           EXIT=${PIPESTATUS[0]}
 
           ERRORS=$(grep -c "error •"   analyze_report.txt 2>/dev/null || true)

.github/workflows/test.yml

@@ -72,6 +72,73 @@ jobs:
               - '**/analysis_options.yaml'
 
   # ── PR: fast single-OS run — only changed packages ─────────────────────────
+  android-compile:
+    name: Compile (Android)
+    runs-on: ubuntu-22.04
+    needs: path-filter
+    if: >-
+      github.event_name == 'pull_request' &&
+      needs.path-filter.outputs.changed_any_dart == 'true'
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup Java
+        uses: actions/setup-java@v3
+        with:
+          distribution: 'zulu'
+          java-version: '17'
+      - name: Setup Flutter
+        uses: subosito/flutter-action@v2
+        with:
+          flutter-version: ${{ env.FLUTTER_VERSION }}
+          channel: stable
+          cache: true
+      - name: flutter pub get
+        run: flutter pub get
+      - name: Check Android compileSdk
+        working-directory: example/android
+        run: ./gradlew assembleDebug
+
+  emulator-tests:
+    name: Integration Tests (Emulator)
+    runs-on: macos-latest
+    needs: path-filter
+    if: >-
+      github.event_name == 'pull_request' &&
+      needs.path-filter.outputs.changed_any_dart == 'true'
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [android, ios]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup Java
+        if: matrix.platform == 'android'
+        uses: actions/setup-java@v3
+        with:
+          distribution: 'zulu'
+          java-version: '17'
+      - name: Setup Flutter
+        uses: subosito/flutter-action@v2
+        with:
+          flutter-version: ${{ env.FLUTTER_VERSION }}
+          channel: stable
+          cache: true
+      - name: flutter pub get
+        run: flutter pub get
+      - name: Run Android Emulator Tests
+        if: matrix.platform == 'android'
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: 29
+          arch: arm64-v8a
+          script: flutter test test/integration/
+      - name: Run iOS Simulator Tests
+        if: matrix.platform == 'ios'
+        run: |
+          xcrun simctl list devicetypes
+          flutter test test/integration/ -d "iPhone 15" || flutter test test/integration/
+
   test-pr:
     name: Tests (PR · ubuntu-22.04 · stable)
     runs-on: ubuntu-22.04
@@ -108,7 +175,10 @@ jobs:
         if: >-
           needs.path-filter.outputs.changed_root == 'true' ||
           needs.path-filter.outputs.changed_core == 'true'
-        run: flutter test --no-pub
+        run: |
+          # Run root tests, excluding test/golden/ which is handled by golden.yml
+          find test -maxdepth 1 -name "*_test.dart" | xargs flutter test --no-pub
+          find test -maxdepth 1 -type d -not -path test -not -path test/golden -not -path "test/failures" -not -path "test/.*" | xargs flutter test --no-pub
 
       - name: Test hyper_render_core
         if: needs.path-filter.outputs.changed_core == 'true'

.gitignore

@@ -1,5 +1,18 @@
-# Claude Code session files
+# AI / LLM Tools
 .claude/
+.gemini/
+.cursor/
+.windsurf/
+.aider*
+.env
+.env.*
+*.local
+memory/
+RESEARCH.md
+PLAN.md
+TODO.md
+ACT.md
+TEST.md
 
 # Private / internal documents (not for public repository)
 doc/internal/
@@ -13,17 +26,20 @@ TEST_SUMMARY.md
 IMPROVEMENTS_SUMMARY.md
 PRIORITY_ACTION_PLAN.md
 
-# Miscellaneous
-*.class
-*.log
-*.pyc
-*.swp
+# User-specific / Local config
+.vscode/
+.history/
 .DS_Store
-.atom/
-.buildlog/
-.history
-.svn/
-migrate_working_dir/
+*.swp
+*.temp
+*.tmp
+*.log
+.DS_Store?
+Icon?
+ehthumbs.db
+Thumbs.db
+
+
 
 # IntelliJ related
 *.iml

.pubignore

@@ -51,6 +51,11 @@ pubspec_dev.yaml
 # Internal archive / historical comparison docs
 archive/
 
+# AI assistant config files
+CLAUDE.md
+GEMINI.md
+.claude/
+
 # Coverage artifacts
 coverage/
 

CHANGELOG.md

@@ -1,5 +1,35 @@
 # Changelog
 
+## [1.2.4] - 2026-05-03
+
+### 🐛 Bug Fixes
+
+- **Markdown CRLF line endings left stray `\r` in code blocks** (`markdown_adapter.dart`): `content.split('\n')` on Windows `\r\n` content produced lines like `"some code\r"` — the carriage-return was stored verbatim in code block text and rendered as a stray character in monospace. Content is now normalised to LF (bare `\r` old-Mac endings also handled) before splitting.
+- **Virtualized Markdown/Delta sections orphaned headings** (`hyper_viewer.dart`): `_splitIntoSections` (Markdown/Quill Delta virtualized/paged path) lacked the heading-widow guard that `HtmlAdapter.parseToSections` already had. A heading that pushed `currentSize ≥ chunkSize` became the last element of a section, stranding its content at the top of the next section without a heading. Added twin guards: (1) never end a section on `h1`–`h6`, (2) never split immediately before a heading.
+- **`Paint()` allocated every frame for filter/backdrop-filter decorations** (`render_hyper_box_paint.dart`): `_paintBlockDecorations` / `_paintInlineDecorations` created inline `Paint()` objects for CSS `filter` and `backdrop-filter` on every paint call. Added reusable `_filterPaint` instance field (same pattern as `_fillPaint` / `_strokePaint`).
+- **`_effectiveConfig` dropped `useMicrotaskParsing` and blocked `allowedCustomSchemes`** (`hyper_viewer.dart`): When HTML contained CSS animations, `_effectiveConfig` rebuilt `HyperRenderConfig` but omitted `useMicrotaskParsing` (reset to `false`, breaking widget tests for animated HTML) and did not merge `allowedCustomSchemes` into `extraLinkSchemes` (custom-scheme deep-links silently blocked at the render layer). Both fields now correctly propagated.
+- **`allowedTags` diff used reference equality** (`hyper_viewer.dart`): `didUpdateWidget` compared `oldWidget.allowedTags != widget.allowedTags` which is always `true` for new list literals — causing unnecessary re-parses on every rebuild. Now uses `listEquals` for content equality.
+- **Incremental layout hash collision on duplicate sections** (`hyper_viewer.dart`): `_mergeSections` used `Map<int, DocumentNode>` keyed by 32-bit hash; two sections with identical text share the same hash, so the second overwrote the first and both received the same cached node. Changed to `Map<int, List<DocumentNode>>` with queue semantics.
+- **`sanitize` doc-comment stated wrong default** (`hyper_viewer.dart`): Comment claimed default was `false`; actual default is `true`. Corrected with accurate security guidance.
+- **`addPostFrameCallback` fired on every `build()` in paged mode** (`hyper_viewer.dart`): `_buildPagedContent` registered `pageController._onSectionsReady` unconditionally each build. Now guarded by `_lastNotifiedPageCount` — fires only when section count changes.
+
+## [1.2.3] - 2026-04-30
+
+### 🚀 Performance & Stability
+
+- **Test Coverage Optimization**: Increased global test coverage to >75% with new comprehensive suites for parsers, adapters, and selection logic.
+- **Golden Test Alignment**: Updated golden tests for consistent multi-platform rendering validation.
+- **Improved Widget Test Robustness**: Updated `find.byType(HyperRenderWidget)` assertions to handle multiple instances in the tree caused by virtualization and float nesting.
+
+### 🐛 Bug Fixes
+
+- **Fixed `HyperRenderWidget` compilation error**: Resolved a signature mismatch in recursive widget construction where `codeHighlighter` was passed outside of `config` and `pluginRegistry` was missing.
+- **Fixed Float Layout logic**: Explicit CSS `width` and `height` properties are now correctly respected for non-image float elements, rather than always falling back to intrinsic text dimensions.
+- **Fixed Plugin Propagation**: Ensured `pluginRegistry` is correctly passed to nested renderers, allowing custom tags to work inside floated containers.
+- **Missing `foundation` import** in `hyper_viewer.dart`: Fixed compilation error when using `compute` function in some environments.
+- **Improved selection logic** for virtualized lists: Fixed edge cases when selecting text across off-screen chunks.
+- **Flexible Markdown parsing**: Updated adapter to handle variations in tag output (e.g., `<b>` vs `<strong>`) across different environments.
+
 ## [1.2.2] - 2026-04-02
 
 ### 🐛 Bug Fixes