chore: 不具合・要望・性能問題のIssueフォームを追加 #648

(cherry picked from commit af5685c639)

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: Bug report
+description: Report incorrect behavior, a crash, or a RAW decoding problem.
+title: "[Bug]: "
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Search [existing issues](https://github.com/storytold/lightcraft/issues?q=is%3Aissue) first. If the same problem is reported, add reproduction details there.
+        Issues are public. Remove secrets, personal paths, and private photo metadata from logs, screenshots, and samples.
+  - type: input
+    id: version
+    attributes:
+      label: LightCraft version
+      description: Copy the version from the About dialog, or give the commit hash for a source build.
+    validations:
+      required: true
+  - type: input
+    id: environment
+    attributes:
+      label: Operating system and hardware
+      description: Include the OS version and CPU architecture. For the web app, also include the browser and version.
+    validations:
+      required: true
+  - type: textarea
+    id: behavior
+    attributes:
+      label: Actual and expected behavior
+      description: Describe what happened and what you expected. Include the exact error message if there is one.
+    validations:
+      required: true
+  - type: textarea
+    id: reproduction
+    attributes:
+      label: Steps to reproduce
+      description: Give the shortest sequence that shows the problem. Say whether it happens every time.
+      placeholder: |
+        1. Open or import ...
+        2. Select ...
+        3. ...
+    validations:
+      required: true
+  - type: input
+    id: camera
+    attributes:
+      label: Camera, lens, and file format (if relevant)
+      description: For RAW problems, include the camera model, RAW mode or compression, and whether the camera JPEG looks correct.
+  - type: textarea
+    id: evidence
+    attributes:
+      label: Screenshots or a small sample (optional)
+      description: Share only material you can make public. Prefer a generated or CC0 sample; remove private metadata. Do not attach Adobe assets or profiles.
+  - type: textarea
+    id: logs
+    attributes:
+      label: Relevant logs (optional)
+      description: Paste only the relevant, redacted excerpt. Do not include credentials or private file paths.
+      render: text

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: true

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: Feature request
+description: Describe a missing photo workflow or an improvement to an existing one.
+title: "[Feature]: "
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Search [existing issues](https://github.com/storytold/lightcraft/issues?q=is%3Aissue) first. Use a reaction to support an existing request, or add details about your workflow there.
+        Issues are public; keep private photo metadata, file paths, and credentials out of examples.
+  - type: textarea
+    id: problem
+    attributes:
+      label: What workflow is missing or difficult?
+      description: Describe the task you are trying to complete and who would benefit.
+    validations:
+      required: true
+  - type: textarea
+    id: proposal
+    attributes:
+      label: Desired behavior
+      description: Explain what LightCraft should do, with a concrete example if possible.
+    validations:
+      required: true
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives or workarounds (optional)
+      description: Describe what you use today and why it does not meet your needs.
+  - type: textarea
+    id: context
+    attributes:
+      label: Additional context (optional)
+      description: Include relevant OS, camera, or file-format details. Share only material you can make public; do not attach Adobe assets or profiles.

.github/ISSUE_TEMPLATE/performance.yml

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+name: Performance problem
+description: Report slow imports, rendering, navigation, or a large-library slowdown.
+title: "[Performance]: "
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Search [existing issues](https://github.com/storytold/lightcraft/issues?q=is%3Aissue) first; add measurements to an existing report when possible.
+        Issues are public. Redact secrets, personal paths, and private photo metadata before sharing evidence.
+  - type: input
+    id: version
+    attributes:
+      label: LightCraft version
+      description: Copy the version from the About dialog, or give the commit hash for a source build.
+    validations:
+      required: true
+  - type: textarea
+    id: environment
+    attributes:
+      label: Operating system and hardware
+      description: Include OS version, CPU, RAM, GPU or driver, and storage type (internal disk, USB, or network). For the web app, include the browser and version.
+    validations:
+      required: true
+  - type: textarea
+    id: workload
+    attributes:
+      label: Library and workload
+      description: Include the number of photos, file types or camera models, image dimensions, active edits, and the operation that is slow. Estimates are fine.
+    validations:
+      required: true
+  - type: textarea
+    id: reproduction
+    attributes:
+      label: Steps to reproduce
+      description: Include whether this is the first run or a repeat with cached previews, and whether it happens on a small library too.
+    validations:
+      required: true
+  - type: textarea
+    id: timings
+    attributes:
+      label: Measured and expected performance
+      description: Give elapsed time or frame rate if possible, what you expected, and whether the UI freezes or can cancel the operation. Approximate measurements are fine.
+    validations:
+      required: true
+  - type: textarea
+    id: logs
+    attributes:
+      label: Relevant logs (optional)
+      description: Paste a small, redacted excerpt. Remove credentials and private file paths.
+      render: text