Keep 8.4.0-dev up to date until release

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: Bug report
+description: Report a focused, reproducible Lime bug
+title: "[Bug]: "
+labels: []
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please report one specific problem per issue. Reports without enough information to reproduce may be closed until the missing details are provided.
+
+  - type: checkboxes
+    id: checks
+    attributes:
+      label: Preflight Checklist
+      options:
+        - label: I searched existing open and closed issues for duplicates.
+          required: true
+        - label: I tested the latest stable Lime release or the current development branch where possible.
+          required: true
+        - label: I reduced this to the smallest project or code sample that still reproduces the issue.
+          required: true
+        - label: This issue describes one specific behavior, not several unrelated observations.
+          required: true
+
+  - type: textarea
+    id: summary
+    attributes:
+      label: Problem Description
+      description: Describe the specific behavior that appears to be wrong.
+    validations:
+      required: true
+
+  - type: textarea
+    id: versions
+    attributes:
+      label: Version Information
+      description: Include exact versions. Do not write "latest" by itself.
+      value: |
+        Lime version:
+        OpenFL version, if applicable:
+        Haxe version:
+        Target/runtime:
+    validations:
+      required: true
+
+  - type: textarea
+    id: environment
+    attributes:
+      label: Environment
+      description: Include relevant OS, architecture, hardware and driver details.
+      value: |
+        OS:
+        Architecture:
+        GPU/driver, if relevant:
+        Display refresh rate, if relevant:
+    validations:
+      required: true
+
+  - type: textarea
+    id: repro
+    attributes:
+      label: Minimal Reproduction
+      description: Attach or link a minimal project, or paste the smallest code sample that reproduces the problem. Include project.xml or project.hxp.
+      placeholder: |
+        Link to minimal project:
+
+        project.xml / project.hxp:
+
+        Relevant source:
+    validations:
+      required: true
+
+  - type: textarea
+    id: steps
+    attributes:
+      label: Steps to Reproduce
+      description: List exact steps needed to reproduce the issue from a clean checkout/project.
+      placeholder: |
+        1.
+        2.
+        3.
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected Behavior
+      description: What should happen?
+    validations:
+      required: true
+
+  - type: textarea
+    id: actual
+    attributes:
+      label: Actual Behavior
+      description: What happens instead?
+    validations:
+      required: true
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Logs and Output
+      description: Paste relevant console output, stack traces or build logs.
+      render: text
+    validations:
+      required: false
+
+  - type: textarea
+    id: media
+    attributes:
+      label: Screenshots or Videos
+      description: Attach screenshots or videos only if they help demonstrate the reproduced behavior. They do not replace a minimal reproduction.
+    validations:
+      required: false
+
+  - type: textarea
+    id: timing
+    attributes:
+      label: Performance, Timing or Rendering Details
+      description: If this is about frame pacing, timing or rendering, explain how you measured it and list frame rate, vsync, window/fullscreen and display settings.
+      placeholder: |
+        Frame rate:
+        Vsync setting:
+        Window/fullscreen mode:
+        Measurement method:
+        Reproduces on other targets/machines/drivers:
+    validations:
+      required: false
+
+  - type: textarea
+    id: additional
+    attributes:
+      label: Additional Context
+      description: Add any other focused context that may help reproduce or diagnose this issue.
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: Feature request
+description: Propose a focused Lime feature or behavior change
+title: "[Feature]: "
+labels: []
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please use this form for focused feature proposals. If you are reporting broken behavior, use the bug report form instead.
+
+  - type: checkboxes
+    id: checks
+    attributes:
+      label: Preflight Checklist
+      options:
+        - label: I searched existing open and closed issues for similar proposals.
+          required: true
+        - label: This request describes one focused feature or behavior change.
+          required: true
+        - label: This is not a bug report or a request for help debugging project-specific code.
+          required: true
+
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem or Use Case
+      description: What problem would this feature solve? Who needs it, and when?
+    validations:
+      required: true
+
+  - type: textarea
+    id: proposal
+    attributes:
+      label: Proposed Behavior
+      description: Describe the exact behavior, API, project setting or workflow change you are proposing.
+    validations:
+      required: true
+
+  - type: textarea
+    id: targets
+    attributes:
+      label: Affected Targets or Backends
+      description: List the targets, runtimes or backends this proposal affects.
+      placeholder: |
+        Native SDL:
+        HTML5:
+        HashLink:
+        HXCPP:
+        Other:
+    validations:
+      required: true
+
+  - type: textarea
+    id: compatibility
+    attributes:
+      label: Compatibility and Defaults
+      description: Explain whether this should be default behavior, opt-in behavior or a breaking change. Include any compatibility concerns.
+    validations:
+      required: true
+
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives Considered
+      description: What existing options, workarounds or alternative designs have you considered?
+    validations:
+      required: false
+
+  - type: textarea
+    id: examples
+    attributes:
+      label: Example Usage
+      description: Show how a project would use this feature, if applicable.
+      placeholder: |
+        project.xml / project.hxp:
+
+        Haxe code:
+    validations:
+      required: false
+
+  - type: textarea
+    id: additional
+    attributes:
+      label: Additional Context
+      description: Add any focused context, links or prior discussion that may help evaluate the proposal.
+    validations:
+      required: false